Fixes

2025-10-31 21:47:59 +05:30 · 2025-10-31 17:16:01 +05:30 · 2025-10-31 15:08:23 +05:30 · 2025-10-31 15:06:23 +05:30 · 2025-10-31 01:15:44 +05:30 · 2025-10-31 01:14:48 +05:30
6413 changed files with 1914532 additions and 781 deletions
--- a/.gitignore
+++ b/.gitignore
@ -28,7 +28,6 @@
 *.lib

 # Executables
-*.exe
 *.out
 *.app

@ -47,11 +46,14 @@
 *.vsix

 .cache/
-build/
-build-windows/
-build-linux/
-build-ios/
-build-mac/
-build-android/
+./build
+./build-windows/
+./build-linux/
+./build-ios/
+./build-mac/
+./build-android-x64/
+./build-android-armv8/

 imgui.ini
+
+Playground/
--- a/.gitmodules
+++ b/.gitmodules
@ -1,6 +1,3 @@
-[submodule "Vendor/SDL"]
-	path = Vendor/SDL
-	url = https://github.com/libsdl-org/SDL
 [submodule "Vendor/SDL_mixer"]
 	path = Vendor/SDL_mixer
 	url = https://github.com/libsdl-org/SDL_mixer
@ -31,3 +28,9 @@
 [submodule "Vendor/json"]
 	path = Vendor/json
 	url = https://github.com/nlohmann/json
+[submodule "Vendor/SDL"]
+	path = Vendor/SDL
+	url = https://github.com/I-A-S/SDL
+[submodule "Vendor/lunasvg"]
+	path = Vendor/lunasvg
+	url = https://github.com/sammycage/lunasvg
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@ -8,10 +8,10 @@
            "name": "(Windows) Launch",
            "type": "cppvsdbg",
            "request": "launch",
-            "program": "${workspaceFolder}/build/bin/Debug/IAERuntime.exe",
+            "program": "${workspaceFolder}/build/bin/Debug/RPGSample.exe",
            "args": [],
            "stopAtEntry": false,
-            "cwd": "${workspaceFolder}/Samples/SpaceInvaders",
+            "cwd": "${workspaceFolder}/Samples/RPG",
            "environment": [],
            "console": "externalTerminal",
            "preLaunchTask": "CMake: build"
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@ -21,6 +21,76 @@
        "array": "cpp",
        "ranges": "cpp",
        "span": "cpp",
-        "vector": "cpp"
+        "vector": "cpp",
+        "xiosbase": "cpp",
+        "thread": "cpp",
+        "algorithm": "cpp",
+        "atomic": "cpp",
+        "bit": "cpp",
+        "bitset": "cpp",
+        "cctype": "cpp",
+        "charconv": "cpp",
+        "clocale": "cpp",
+        "cmath": "cpp",
+        "compare": "cpp",
+        "concepts": "cpp",
+        "condition_variable": "cpp",
+        "coroutine": "cpp",
+        "csignal": "cpp",
+        "cstdarg": "cpp",
+        "cstddef": "cpp",
+        "cstdint": "cpp",
+        "cstdio": "cpp",
+        "cstdlib": "cpp",
+        "cstring": "cpp",
+        "ctime": "cpp",
+        "cwchar": "cpp",
+        "deque": "cpp",
+        "exception": "cpp",
+        "forward_list": "cpp",
+        "fstream": "cpp",
+        "initializer_list": "cpp",
+        "iomanip": "cpp",
+        "ios": "cpp",
+        "iosfwd": "cpp",
+        "iostream": "cpp",
+        "istream": "cpp",
+        "iterator": "cpp",
+        "limits": "cpp",
+        "list": "cpp",
+        "locale": "cpp",
+        "map": "cpp",
+        "memory": "cpp",
+        "mutex": "cpp",
+        "new": "cpp",
+        "numeric": "cpp",
+        "ostream": "cpp",
+        "queue": "cpp",
+        "ratio": "cpp",
+        "set": "cpp",
+        "shared_mutex": "cpp",
+        "source_location": "cpp",
+        "sstream": "cpp",
+        "stack": "cpp",
+        "stdexcept": "cpp",
+        "stop_token": "cpp",
+        "streambuf": "cpp",
+        "string": "cpp",
+        "tuple": "cpp",
+        "typeinfo": "cpp",
+        "unordered_map": "cpp",
+        "unordered_set": "cpp",
+        "utility": "cpp",
+        "valarray": "cpp",
+        "variant": "cpp",
+        "xfacet": "cpp",
+        "xhash": "cpp",
+        "xlocbuf": "cpp",
+        "xlocmes": "cpp",
+        "xloctime": "cpp",
+        "xmemory": "cpp",
+        "xstddef": "cpp",
+        "xtree": "cpp",
+        "expected": "cpp"
    }
 }
--- a/Android/AndroidProject/.gitignore
+++ b/Android/AndroidProject/.gitignore
@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
--- a/Android/AndroidProject/.idea/.gitignore
+++ b/Android/AndroidProject/.idea/.gitignore
@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
--- a/Android/AndroidProject/.idea/.name
+++ b/Android/AndroidProject/.idea/.name
@ -0,0 +1 @@
+IAEGame
--- a/Android/AndroidProject/.idea/AndroidProjectSystem.xml
+++ b/Android/AndroidProject/.idea/AndroidProjectSystem.xml
@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AndroidProjectSystem">
+    <option name="providerId" value="com.android.tools.idea.GradleProjectSystem" />
+  </component>
+</project>
--- a/Android/AndroidProject/.idea/compiler.xml
+++ b/Android/AndroidProject/.idea/compiler.xml
@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="21" />
+  </component>
+</project>
--- a/Android/AndroidProject/.idea/deploymentTargetSelector.xml
+++ b/Android/AndroidProject/.idea/deploymentTargetSelector.xml
@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="deploymentTargetSelector">
+    <selectionStates>
+      <SelectionState runConfigName="app">
+        <option name="selectionMode" value="DROPDOWN" />
+      </SelectionState>
+    </selectionStates>
+  </component>
+</project>
--- a/Android/AndroidProject/.idea/gradle.xml
+++ b/Android/AndroidProject/.idea/gradle.xml
@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="CHOOSE_PER_TEST" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleJvm" value="#GRADLE_LOCAL_JAVA_HOME" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
--- a/Android/AndroidProject/.idea/inspectionProfiles/Project_Default.xml
+++ b/Android/AndroidProject/.idea/inspectionProfiles/Project_Default.xml
@ -0,0 +1,61 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="ComposePreviewDimensionRespectsLimit" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="ComposePreviewMustBeTopLevelFunction" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="ComposePreviewNeedsComposableAnnotation" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="ComposePreviewNotSupportedInUnitTestFiles" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="GlancePreviewDimensionRespectsLimit" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="GlancePreviewMustBeTopLevelFunction" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="GlancePreviewNeedsComposableAnnotation" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="GlancePreviewNotSupportedInUnitTestFiles" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="PreviewAnnotationInFunctionWithParameters" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="PreviewApiLevelMustBeValid" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="PreviewDeviceShouldUseNewSpec" enabled="true" level="WEAK WARNING" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="PreviewFontScaleMustBeGreaterThanZero" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="PreviewMultipleParameterProviders" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="PreviewParameterProviderOnFirstParameter" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="PreviewPickerAnnotation" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+  </profile>
+</component>
--- a/Android/AndroidProject/.idea/migrations.xml
+++ b/Android/AndroidProject/.idea/migrations.xml
@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectMigrations">
+    <option name="MigrateToGradleLocalJavaHome">
+      <set>
+        <option value="$PROJECT_DIR$" />
+      </set>
+    </option>
+  </component>
+</project>
--- a/Android/AndroidProject/.idea/misc.xml
+++ b/Android/AndroidProject/.idea/misc.xml
@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="jbr-21" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
--- a/Android/AndroidProject/.idea/runConfigurations.xml
+++ b/Android/AndroidProject/.idea/runConfigurations.xml
@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.intellij.execution.junit.AbstractAllInDirectoryConfigurationProducer" />
+        <option value="com.intellij.execution.junit.AllInPackageConfigurationProducer" />
+        <option value="com.intellij.execution.junit.PatternConfigurationProducer" />
+        <option value="com.intellij.execution.junit.TestInClassConfigurationProducer" />
+        <option value="com.intellij.execution.junit.UniqueIdConfigurationProducer" />
+        <option value="com.intellij.execution.junit.testDiscovery.JUnitTestDiscoveryConfigurationProducer" />
+        <option value="org.jetbrains.kotlin.idea.junit.KotlinJUnitRunConfigurationProducer" />
+        <option value="org.jetbrains.kotlin.idea.junit.KotlinPatternConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
--- a/Android/AndroidProject/.idea/vcs.xml
+++ b/Android/AndroidProject/.idea/vcs.xml
@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../.." vcs="Git" />
+    <mapping directory="$PROJECT_DIR$/../../Vendor/IACore" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$/../../Vendor/RmlUi" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$/../../Vendor/SDL" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$/../../Vendor/SDL_mixer" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$/../../Vendor/freetype" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$/../../Vendor/json" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$/../../Vendor/nativefiledialog" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$/../../Vendor/zlib" vcs="Git" />
+  </component>
+</project>
--- a/Android/AndroidProject/app/.gitignore
+++ b/Android/AndroidProject/app/.gitignore
@ -0,0 +1 @@
+/build
--- a/Android/AndroidProject/app/build.gradle.kts
+++ b/Android/AndroidProject/app/build.gradle.kts
@ -0,0 +1,59 @@
+plugins {
+    alias(libs.plugins.android.application)
+    alias(libs.plugins.kotlin.android)
+    alias(libs.plugins.kotlin.compose)
+}
+
+android {
+    namespace = "com.iasoft.iaegame"
+    compileSdk = 36
+
+    defaultConfig {
+        applicationId = "com.iasoft.iaegame"
+        minSdk = 30
+        targetSdk = 36
+        versionCode = 1
+        versionName = "1.0"
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+    }
+    kotlinOptions {
+        jvmTarget = "11"
+    }
+    buildFeatures {
+        compose = true
+    }
+}
+
+dependencies {
+
+    implementation(libs.androidx.core.ktx)
+    implementation(libs.androidx.lifecycle.runtime.ktx)
+    implementation(libs.androidx.activity.compose)
+    implementation(platform(libs.androidx.compose.bom))
+    implementation(libs.androidx.compose.ui)
+    implementation(libs.androidx.compose.ui.graphics)
+    implementation(libs.androidx.compose.ui.tooling.preview)
+    implementation(libs.androidx.compose.material3)
+    testImplementation(libs.junit)
+    androidTestImplementation(libs.androidx.junit)
+    androidTestImplementation(libs.androidx.espresso.core)
+    androidTestImplementation(platform(libs.androidx.compose.bom))
+    androidTestImplementation(libs.androidx.compose.ui.test.junit4)
+    debugImplementation(libs.androidx.compose.ui.tooling)
+    debugImplementation(libs.androidx.compose.ui.test.manifest)
+}
--- a/Android/AndroidProject/app/proguard-rules.pro
+++ b/Android/AndroidProject/app/proguard-rules.pro
@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
--- a/Android/AndroidProject/app/src/main/AndroidManifest.xml
+++ b/Android/AndroidProject/app/src/main/AndroidManifest.xml
@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <!-- OpenGL ES 2.0 -->
+    <uses-feature android:glEsVersion="0x00020000" />
+
+    <!-- Touchscreen support -->
+    <uses-feature
+        android:name="android.hardware.touchscreen"
+        android:required="false" />
+
+    <!-- Game controller support -->
+    <uses-feature
+        android:name="android.hardware.bluetooth"
+        android:required="false" />
+    <uses-feature
+        android:name="android.hardware.gamepad"
+        android:required="false" />
+    <uses-feature
+        android:name="android.hardware.usb.host"
+        android:required="false" />
+
+    <!-- External mouse input events -->
+    <uses-feature
+        android:name="android.hardware.type.pc"
+        android:required="false" />
+
+    <uses-permission android:name="android.permission.VIBRATE" />
+
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.IAEGame"
+        android:hardwareAccelerated="true">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:label="@string/app_name"
+            android:theme="@style/Theme.IAEGame"
+            android:configChanges="layoutDirection|locale|grammaticalGender|fontScale|fontWeightAdjustment|orientation|uiMode|screenLayout|screenSize|smallestScreenSize|keyboard|keyboardHidden|navigation"
+            android:preferMinimalPostProcessing="true"
+            >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
--- a/Android/AndroidProject/app/src/main/ic_launcher-playstore.png
+++ b/Android/AndroidProject/app/src/main/ic_launcher-playstore.png
--- a/Android/AndroidProject/app/src/main/java/com/iasoft/iaegame/MainActivity.kt
+++ b/Android/AndroidProject/app/src/main/java/com/iasoft/iaegame/MainActivity.kt
@ -0,0 +1,16 @@
+package com.iasoft.iaegame
+
+import android.os.Bundle
+import org.libsdl.app.SDLActivity
+
+class MainActivity : SDLActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+    }
+
+    override fun getLibraries(): Array<out String?>? {
+        return arrayOf<String>(
+            "Game"
+        )
+    }
+}
--- a/Android/AndroidProject/app/src/main/java/com/iasoft/iaegame/ui/theme/Color.kt
+++ b/Android/AndroidProject/app/src/main/java/com/iasoft/iaegame/ui/theme/Color.kt
@ -0,0 +1,11 @@
+package com.iasoft.iaegame.ui.theme
+
+import androidx.compose.ui.graphics.Color
+
+val Purple80 = Color(0xFFD0BCFF)
+val PurpleGrey80 = Color(0xFFCCC2DC)
+val Pink80 = Color(0xFFEFB8C8)
+
+val Purple40 = Color(0xFF6650a4)
+val PurpleGrey40 = Color(0xFF625b71)
+val Pink40 = Color(0xFF7D5260)
--- a/Android/AndroidProject/app/src/main/java/com/iasoft/iaegame/ui/theme/Theme.kt
+++ b/Android/AndroidProject/app/src/main/java/com/iasoft/iaegame/ui/theme/Theme.kt
@ -0,0 +1,58 @@
+package com.iasoft.iaegame.ui.theme
+
+import android.app.Activity
+import android.os.Build
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.darkColorScheme
+import androidx.compose.material3.dynamicDarkColorScheme
+import androidx.compose.material3.dynamicLightColorScheme
+import androidx.compose.material3.lightColorScheme
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.platform.LocalContext
+
+private val DarkColorScheme = darkColorScheme(
+    primary = Purple80,
+    secondary = PurpleGrey80,
+    tertiary = Pink80
+)
+
+private val LightColorScheme = lightColorScheme(
+    primary = Purple40,
+    secondary = PurpleGrey40,
+    tertiary = Pink40
+
+    /* Other default colors to override
+    background = Color(0xFFFFFBFE),
+    surface = Color(0xFFFFFBFE),
+    onPrimary = Color.White,
+    onSecondary = Color.White,
+    onTertiary = Color.White,
+    onBackground = Color(0xFF1C1B1F),
+    onSurface = Color(0xFF1C1B1F),
+    */
+)
+
+@Composable
+fun IAEGameTheme(
+    darkTheme: Boolean = isSystemInDarkTheme(),
+    // Dynamic color is available on Android 12+
+    dynamicColor: Boolean = true,
+    content: @Composable () -> Unit
+) {
+    val colorScheme = when {
+        dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
+            val context = LocalContext.current
+            if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
+        }
+
+        darkTheme -> DarkColorScheme
+        else -> LightColorScheme
+    }
+
+    MaterialTheme(
+        colorScheme = colorScheme,
+        typography = Typography,
+        content = content
+    )
+}
--- a/Android/AndroidProject/app/src/main/java/com/iasoft/iaegame/ui/theme/Type.kt
+++ b/Android/AndroidProject/app/src/main/java/com/iasoft/iaegame/ui/theme/Type.kt
@ -0,0 +1,34 @@
+package com.iasoft.iaegame.ui.theme
+
+import androidx.compose.material3.Typography
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.sp
+
+// Set of Material typography styles to start with
+val Typography = Typography(
+    bodyLarge = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Normal,
+        fontSize = 16.sp,
+        lineHeight = 24.sp,
+        letterSpacing = 0.5.sp
+    )
+    /* Other default text styles to override
+    titleLarge = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Normal,
+        fontSize = 22.sp,
+        lineHeight = 28.sp,
+        letterSpacing = 0.sp
+    ),
+    labelSmall = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Medium,
+        fontSize = 11.sp,
+        lineHeight = 16.sp,
+        letterSpacing = 0.5.sp
+    )
+    */
+)
--- a/Android/AndroidProject/app/src/main/java/org/libsdl/app/HIDDevice.java
+++ b/Android/AndroidProject/app/src/main/java/org/libsdl/app/HIDDevice.java
@ -0,0 +1,21 @@
+package org.libsdl.app;
+
+import android.hardware.usb.UsbDevice;
+
+interface HIDDevice
+{
+    public int getId();
+    public int getVendorId();
+    public int getProductId();
+    public String getSerialNumber();
+    public int getVersion();
+    public String getManufacturerName();
+    public String getProductName();
+    public UsbDevice getDevice();
+    public boolean open();
+    public int writeReport(byte[] report, boolean feature);
+    public boolean readReport(byte[] report, boolean feature);
+    public void setFrozen(boolean frozen);
+    public void close();
+    public void shutdown();
+}
--- a/Android/AndroidProject/app/src/main/java/org/libsdl/app/HIDDeviceBLESteamController.java
+++ b/Android/AndroidProject/app/src/main/java/org/libsdl/app/HIDDeviceBLESteamController.java
@ -0,0 +1,655 @@
+package org.libsdl.app;
+
+import android.content.Context;
+import android.bluetooth.BluetoothDevice;
+import android.bluetooth.BluetoothGatt;
+import android.bluetooth.BluetoothGattCallback;
+import android.bluetooth.BluetoothGattCharacteristic;
+import android.bluetooth.BluetoothGattDescriptor;
+import android.bluetooth.BluetoothManager;
+import android.bluetooth.BluetoothProfile;
+import android.bluetooth.BluetoothGattService;
+import android.hardware.usb.UsbDevice;
+import android.os.Handler;
+import android.os.Looper;
+import android.util.Log;
+import android.os.*;
+
+//import com.android.internal.util.HexDump;
+
+import java.lang.Runnable;
+import java.util.Arrays;
+import java.util.LinkedList;
+import java.util.UUID;
+
+class HIDDeviceBLESteamController extends BluetoothGattCallback implements HIDDevice {
+
+    private static final String TAG = "hidapi";
+    private HIDDeviceManager mManager;
+    private BluetoothDevice mDevice;
+    private int mDeviceId;
+    private BluetoothGatt mGatt;
+    private boolean mIsRegistered = false;
+    private boolean mIsConnected = false;
+    private boolean mIsChromebook = false;
+    private boolean mIsReconnecting = false;
+    private boolean mFrozen = false;
+    private LinkedList<GattOperation> mOperations;
+    GattOperation mCurrentOperation = null;
+    private Handler mHandler;
+
+    private static final int TRANSPORT_AUTO = 0;
+    private static final int TRANSPORT_BREDR = 1;
+    private static final int TRANSPORT_LE = 2;
+
+    private static final int CHROMEBOOK_CONNECTION_CHECK_INTERVAL = 10000;
+
+    static final UUID steamControllerService = UUID.fromString("100F6C32-1735-4313-B402-38567131E5F3");
+    static final UUID inputCharacteristic = UUID.fromString("100F6C33-1735-4313-B402-38567131E5F3");
+    static final UUID reportCharacteristic = UUID.fromString("100F6C34-1735-4313-B402-38567131E5F3");
+    static private final byte[] enterValveMode = new byte[] { (byte)0xC0, (byte)0x87, 0x03, 0x08, 0x07, 0x00 };
+
+    static class GattOperation {
+        private enum Operation {
+            CHR_READ,
+            CHR_WRITE,
+            ENABLE_NOTIFICATION
+        }
+
+        Operation mOp;
+        UUID mUuid;
+        byte[] mValue;
+        BluetoothGatt mGatt;
+        boolean mResult = true;
+
+        private GattOperation(BluetoothGatt gatt, GattOperation.Operation operation, UUID uuid) {
+            mGatt = gatt;
+            mOp = operation;
+            mUuid = uuid;
+        }
+
+        private GattOperation(BluetoothGatt gatt, GattOperation.Operation operation, UUID uuid, byte[] value) {
+            mGatt = gatt;
+            mOp = operation;
+            mUuid = uuid;
+            mValue = value;
+        }
+
+        public void run() {
+            // This is executed in main thread
+            BluetoothGattCharacteristic chr;
+
+            switch (mOp) {
+                case CHR_READ:
+                    chr = getCharacteristic(mUuid);
+                    //Log.v(TAG, "Reading characteristic " + chr.getUuid());
+                    if (!mGatt.readCharacteristic(chr)) {
+                        Log.e(TAG, "Unable to read characteristic " + mUuid.toString());
+                        mResult = false;
+                        break;
+                    }
+                    mResult = true;
+                    break;
+                case CHR_WRITE:
+                    chr = getCharacteristic(mUuid);
+                    //Log.v(TAG, "Writing characteristic " + chr.getUuid() + " value=" + HexDump.toHexString(value));
+                    chr.setValue(mValue);
+                    if (!mGatt.writeCharacteristic(chr)) {
+                        Log.e(TAG, "Unable to write characteristic " + mUuid.toString());
+                        mResult = false;
+                        break;
+                    }
+                    mResult = true;
+                    break;
+                case ENABLE_NOTIFICATION:
+                    chr = getCharacteristic(mUuid);
+                    //Log.v(TAG, "Writing descriptor of " + chr.getUuid());
+                    if (chr != null) {
+                        BluetoothGattDescriptor cccd = chr.getDescriptor(UUID.fromString("00002902-0000-1000-8000-00805f9b34fb"));
+                        if (cccd != null) {
+                            int properties = chr.getProperties();
+                            byte[] value;
+                            if ((properties & BluetoothGattCharacteristic.PROPERTY_NOTIFY) == BluetoothGattCharacteristic.PROPERTY_NOTIFY) {
+                                value = BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE;
+                            } else if ((properties & BluetoothGattCharacteristic.PROPERTY_INDICATE) == BluetoothGattCharacteristic.PROPERTY_INDICATE) {
+                                value = BluetoothGattDescriptor.ENABLE_INDICATION_VALUE;
+                            } else {
+                                Log.e(TAG, "Unable to start notifications on input characteristic");
+                                mResult = false;
+                                return;
+                            }
+
+                            mGatt.setCharacteristicNotification(chr, true);
+                            cccd.setValue(value);
+                            if (!mGatt.writeDescriptor(cccd)) {
+                                Log.e(TAG, "Unable to write descriptor " + mUuid.toString());
+                                mResult = false;
+                                return;
+                            }
+                            mResult = true;
+                        }
+                    }
+            }
+        }
+
+        public boolean finish() {
+            return mResult;
+        }
+
+        private BluetoothGattCharacteristic getCharacteristic(UUID uuid) {
+            BluetoothGattService valveService = mGatt.getService(steamControllerService);
+            if (valveService == null)
+                return null;
+            return valveService.getCharacteristic(uuid);
+        }
+
+        static public GattOperation readCharacteristic(BluetoothGatt gatt, UUID uuid) {
+            return new GattOperation(gatt, Operation.CHR_READ, uuid);
+        }
+
+        static public GattOperation writeCharacteristic(BluetoothGatt gatt, UUID uuid, byte[] value) {
+            return new GattOperation(gatt, Operation.CHR_WRITE, uuid, value);
+        }
+
+        static public GattOperation enableNotification(BluetoothGatt gatt, UUID uuid) {
+            return new GattOperation(gatt, Operation.ENABLE_NOTIFICATION, uuid);
+        }
+    }
+
+    HIDDeviceBLESteamController(HIDDeviceManager manager, BluetoothDevice device) {
+        mManager = manager;
+        mDevice = device;
+        mDeviceId = mManager.getDeviceIDForIdentifier(getIdentifier());
+        mIsRegistered = false;
+        mIsChromebook = SDLActivity.isChromebook();
+        mOperations = new LinkedList<GattOperation>();
+        mHandler = new Handler(Looper.getMainLooper());
+
+        mGatt = connectGatt();
+        // final HIDDeviceBLESteamController finalThis = this;
+        // mHandler.postDelayed(new Runnable() {
+        //     @Override
+        //     void run() {
+        //         finalThis.checkConnectionForChromebookIssue();
+        //     }
+        // }, CHROMEBOOK_CONNECTION_CHECK_INTERVAL);
+    }
+
+    String getIdentifier() {
+        return String.format("SteamController.%s", mDevice.getAddress());
+    }
+
+    BluetoothGatt getGatt() {
+        return mGatt;
+    }
+
+    // Because on Chromebooks we show up as a dual-mode device, it will attempt to connect TRANSPORT_AUTO, which will use TRANSPORT_BREDR instead
+    // of TRANSPORT_LE.  Let's force ourselves to connect low energy.
+    private BluetoothGatt connectGatt(boolean managed) {
+        if (Build.VERSION.SDK_INT >= 23 /* Android 6.0 (M) */) {
+            try {
+                return mDevice.connectGatt(mManager.getContext(), managed, this, TRANSPORT_LE);
+            } catch (Exception e) {
+                return mDevice.connectGatt(mManager.getContext(), managed, this);
+            }
+        } else {
+            return mDevice.connectGatt(mManager.getContext(), managed, this);
+        }
+    }
+
+    private BluetoothGatt connectGatt() {
+        return connectGatt(false);
+    }
+
+    protected int getConnectionState() {
+
+        Context context = mManager.getContext();
+        if (context == null) {
+            // We are lacking any context to get our Bluetooth information.  We'll just assume disconnected.
+            return BluetoothProfile.STATE_DISCONNECTED;
+        }
+
+        BluetoothManager btManager = (BluetoothManager)context.getSystemService(Context.BLUETOOTH_SERVICE);
+        if (btManager == null) {
+            // This device doesn't support Bluetooth.  We should never be here, because how did
+            // we instantiate a device to start with?
+            return BluetoothProfile.STATE_DISCONNECTED;
+        }
+
+        return btManager.getConnectionState(mDevice, BluetoothProfile.GATT);
+    }
+
+    void reconnect() {
+
+        if (getConnectionState() != BluetoothProfile.STATE_CONNECTED) {
+            mGatt.disconnect();
+            mGatt = connectGatt();
+        }
+
+    }
+
+    protected void checkConnectionForChromebookIssue() {
+        if (!mIsChromebook) {
+            // We only do this on Chromebooks, because otherwise it's really annoying to just attempt
+            // over and over.
+            return;
+        }
+
+        int connectionState = getConnectionState();
+
+        switch (connectionState) {
+            case BluetoothProfile.STATE_CONNECTED:
+                if (!mIsConnected) {
+                    // We are in the Bad Chromebook Place.  We can force a disconnect
+                    // to try to recover.
+                    Log.v(TAG, "Chromebook: We are in a very bad state; the controller shows as connected in the underlying Bluetooth layer, but we never received a callback.  Forcing a reconnect.");
+                    mIsReconnecting = true;
+                    mGatt.disconnect();
+                    mGatt = connectGatt(false);
+                    break;
+                }
+                else if (!isRegistered()) {
+                    if (mGatt.getServices().size() > 0) {
+                        Log.v(TAG, "Chromebook: We are connected to a controller, but never got our registration.  Trying to recover.");
+                        probeService(this);
+                    }
+                    else {
+                        Log.v(TAG, "Chromebook: We are connected to a controller, but never discovered services.  Trying to recover.");
+                        mIsReconnecting = true;
+                        mGatt.disconnect();
+                        mGatt = connectGatt(false);
+                        break;
+                    }
+                }
+                else {
+                    Log.v(TAG, "Chromebook: We are connected, and registered.  Everything's good!");
+                    return;
+                }
+                break;
+
+            case BluetoothProfile.STATE_DISCONNECTED:
+                Log.v(TAG, "Chromebook: We have either been disconnected, or the Chromebook BtGatt.ContextMap bug has bitten us.  Attempting a disconnect/reconnect, but we may not be able to recover.");
+
+                mIsReconnecting = true;
+                mGatt.disconnect();
+                mGatt = connectGatt(false);
+                break;
+
+            case BluetoothProfile.STATE_CONNECTING:
+                Log.v(TAG, "Chromebook: We're still trying to connect.  Waiting a bit longer.");
+                break;
+        }
+
+        final HIDDeviceBLESteamController finalThis = this;
+        mHandler.postDelayed(new Runnable() {
+            @Override
+            public void run() {
+                finalThis.checkConnectionForChromebookIssue();
+            }
+        }, CHROMEBOOK_CONNECTION_CHECK_INTERVAL);
+    }
+
+    private boolean isRegistered() {
+        return mIsRegistered;
+    }
+
+    private void setRegistered() {
+        mIsRegistered = true;
+    }
+
+    private boolean probeService(HIDDeviceBLESteamController controller) {
+
+        if (isRegistered()) {
+            return true;
+        }
+
+        if (!mIsConnected) {
+            return false;
+        }
+
+        Log.v(TAG, "probeService controller=" + controller);
+
+        for (BluetoothGattService service : mGatt.getServices()) {
+            if (service.getUuid().equals(steamControllerService)) {
+                Log.v(TAG, "Found Valve steam controller service " + service.getUuid());
+
+                for (BluetoothGattCharacteristic chr : service.getCharacteristics()) {
+                    if (chr.getUuid().equals(inputCharacteristic)) {
+                        Log.v(TAG, "Found input characteristic");
+                        // Start notifications
+                        BluetoothGattDescriptor cccd = chr.getDescriptor(UUID.fromString("00002902-0000-1000-8000-00805f9b34fb"));
+                        if (cccd != null) {
+                            enableNotification(chr.getUuid());
+                        }
+                    }
+                }
+                return true;
+            }
+        }
+
+        if ((mGatt.getServices().size() == 0) && mIsChromebook && !mIsReconnecting) {
+            Log.e(TAG, "Chromebook: Discovered services were empty; this almost certainly means the BtGatt.ContextMap bug has bitten us.");
+            mIsConnected = false;
+            mIsReconnecting = true;
+            mGatt.disconnect();
+            mGatt = connectGatt(false);
+        }
+
+        return false;
+    }
+
+    //////////////////////////////////////////////////////////////////////////////////////////////////////
+    //////////////////////////////////////////////////////////////////////////////////////////////////////
+    //////////////////////////////////////////////////////////////////////////////////////////////////////
+
+    private void finishCurrentGattOperation() {
+        GattOperation op = null;
+        synchronized (mOperations) {
+            if (mCurrentOperation != null) {
+                op = mCurrentOperation;
+                mCurrentOperation = null;
+            }
+        }
+        if (op != null) {
+            boolean result = op.finish(); // TODO: Maybe in main thread as well?
+
+            // Our operation failed, let's add it back to the beginning of our queue.
+            if (!result) {
+                mOperations.addFirst(op);
+            }
+        }
+        executeNextGattOperation();
+    }
+
+    private void executeNextGattOperation() {
+        synchronized (mOperations) {
+            if (mCurrentOperation != null)
+                return;
+
+            if (mOperations.isEmpty())
+                return;
+
+            mCurrentOperation = mOperations.removeFirst();
+        }
+
+        // Run in main thread
+        mHandler.post(new Runnable() {
+            @Override
+            public void run() {
+                synchronized (mOperations) {
+                    if (mCurrentOperation == null) {
+                        Log.e(TAG, "Current operation null in executor?");
+                        return;
+                    }
+
+                    mCurrentOperation.run();
+                    // now wait for the GATT callback and when it comes, finish this operation
+                }
+            }
+        });
+    }
+
+    private void queueGattOperation(GattOperation op) {
+        synchronized (mOperations) {
+            mOperations.add(op);
+        }
+        executeNextGattOperation();
+    }
+
+    private void enableNotification(UUID chrUuid) {
+        GattOperation op = HIDDeviceBLESteamController.GattOperation.enableNotification(mGatt, chrUuid);
+        queueGattOperation(op);
+    }
+
+    void writeCharacteristic(UUID uuid, byte[] value) {
+        GattOperation op = HIDDeviceBLESteamController.GattOperation.writeCharacteristic(mGatt, uuid, value);
+        queueGattOperation(op);
+    }
+
+    void readCharacteristic(UUID uuid) {
+        GattOperation op = HIDDeviceBLESteamController.GattOperation.readCharacteristic(mGatt, uuid);
+        queueGattOperation(op);
+    }
+
+    //////////////////////////////////////////////////////////////////////////////////////////////////////
+    //////////////  BluetoothGattCallback overridden methods
+    //////////////////////////////////////////////////////////////////////////////////////////////////////
+
+    @Override
+    public void onConnectionStateChange(BluetoothGatt g, int status, int newState) {
+        //Log.v(TAG, "onConnectionStateChange status=" + status + " newState=" + newState);
+        mIsReconnecting = false;
+        if (newState == 2) {
+            mIsConnected = true;
+            // Run directly, without GattOperation
+            if (!isRegistered()) {
+                mHandler.post(new Runnable() {
+                    @Override
+                    public void run() {
+                        mGatt.discoverServices();
+                    }
+                });
+            }
+        }
+        else if (newState == 0) {
+            mIsConnected = false;
+        }
+
+        // Disconnection is handled in SteamLink using the ACTION_ACL_DISCONNECTED Intent.
+    }
+
+    @Override
+    public void onServicesDiscovered(BluetoothGatt gatt, int status) {
+        //Log.v(TAG, "onServicesDiscovered status=" + status);
+        if (status == 0) {
+            if (gatt.getServices().size() == 0) {
+                Log.v(TAG, "onServicesDiscovered returned zero services; something has gone horribly wrong down in Android's Bluetooth stack.");
+                mIsReconnecting = true;
+                mIsConnected = false;
+                gatt.disconnect();
+                mGatt = connectGatt(false);
+            }
+            else {
+                probeService(this);
+            }
+        }
+    }
+
+    @Override
+    public void onCharacteristicRead(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic, int status) {
+        //Log.v(TAG, "onCharacteristicRead status=" + status + " uuid=" + characteristic.getUuid());
+
+        if (characteristic.getUuid().equals(reportCharacteristic) && !mFrozen) {
+            mManager.HIDDeviceReportResponse(getId(), characteristic.getValue());
+        }
+
+        finishCurrentGattOperation();
+    }
+
+    @Override
+    public void onCharacteristicWrite(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic, int status) {
+        //Log.v(TAG, "onCharacteristicWrite status=" + status + " uuid=" + characteristic.getUuid());
+
+        if (characteristic.getUuid().equals(reportCharacteristic)) {
+            // Only register controller with the native side once it has been fully configured
+            if (!isRegistered()) {
+                Log.v(TAG, "Registering Steam Controller with ID: " + getId());
+                mManager.HIDDeviceConnected(getId(), getIdentifier(), getVendorId(), getProductId(), getSerialNumber(), getVersion(), getManufacturerName(), getProductName(), 0, 0, 0, 0, true);
+                setRegistered();
+            }
+        }
+
+        finishCurrentGattOperation();
+    }
+
+    @Override
+    public void onCharacteristicChanged(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic) {
+    // Enable this for verbose logging of controller input reports
+        //Log.v(TAG, "onCharacteristicChanged uuid=" + characteristic.getUuid() + " data=" + HexDump.dumpHexString(characteristic.getValue()));
+
+        if (characteristic.getUuid().equals(inputCharacteristic) && !mFrozen) {
+            mManager.HIDDeviceInputReport(getId(), characteristic.getValue());
+        }
+    }
+
+    @Override
+    public void onDescriptorRead(BluetoothGatt gatt, BluetoothGattDescriptor descriptor, int status) {
+        //Log.v(TAG, "onDescriptorRead status=" + status);
+    }
+
+    @Override
+    public void onDescriptorWrite(BluetoothGatt gatt, BluetoothGattDescriptor descriptor, int status) {
+        BluetoothGattCharacteristic chr = descriptor.getCharacteristic();
+        //Log.v(TAG, "onDescriptorWrite status=" + status + " uuid=" + chr.getUuid() + " descriptor=" + descriptor.getUuid());
+
+        if (chr.getUuid().equals(inputCharacteristic)) {
+            boolean hasWrittenInputDescriptor = true;
+            BluetoothGattCharacteristic reportChr = chr.getService().getCharacteristic(reportCharacteristic);
+            if (reportChr != null) {
+                Log.v(TAG, "Writing report characteristic to enter valve mode");
+                reportChr.setValue(enterValveMode);
+                gatt.writeCharacteristic(reportChr);
+            }
+        }
+
+        finishCurrentGattOperation();
+    }
+
+    @Override
+    public void onReliableWriteCompleted(BluetoothGatt gatt, int status) {
+        //Log.v(TAG, "onReliableWriteCompleted status=" + status);
+    }
+
+    @Override
+    public void onReadRemoteRssi(BluetoothGatt gatt, int rssi, int status) {
+        //Log.v(TAG, "onReadRemoteRssi status=" + status);
+    }
+
+    @Override
+    public void onMtuChanged(BluetoothGatt gatt, int mtu, int status) {
+        //Log.v(TAG, "onMtuChanged status=" + status);
+    }
+
+    //////////////////////////////////////////////////////////////////////////////////////////////////////
+    //////// Public API
+    //////////////////////////////////////////////////////////////////////////////////////////////////////
+
+    @Override
+    public int getId() {
+        return mDeviceId;
+    }
+
+    @Override
+    public int getVendorId() {
+        // Valve Corporation
+        final int VALVE_USB_VID = 0x28DE;
+        return VALVE_USB_VID;
+    }
+
+    @Override
+    public int getProductId() {
+        // We don't have an easy way to query from the Bluetooth device, but we know what it is
+        final int D0G_BLE2_PID = 0x1106;
+        return D0G_BLE2_PID;
+    }
+
+    @Override
+    public String getSerialNumber() {
+        // This will be read later via feature report by Steam
+        return "12345";
+    }
+
+    @Override
+    public int getVersion() {
+        return 0;
+    }
+
+    @Override
+    public String getManufacturerName() {
+        return "Valve Corporation";
+    }
+
+    @Override
+    public String getProductName() {
+        return "Steam Controller";
+    }
+
+    @Override
+    public UsbDevice getDevice() {
+        return null;
+    }
+
+    @Override
+    public boolean open() {
+        return true;
+    }
+
+    @Override
+    public int writeReport(byte[] report, boolean feature) {
+        if (!isRegistered()) {
+            Log.e(TAG, "Attempted writeReport before Steam Controller is registered!");
+            if (mIsConnected) {
+                probeService(this);
+            }
+            return -1;
+        }
+
+        if (feature) {
+            // We need to skip the first byte, as that doesn't go over the air
+            byte[] actual_report = Arrays.copyOfRange(report, 1, report.length - 1);
+            //Log.v(TAG, "writeFeatureReport " + HexDump.dumpHexString(actual_report));
+            writeCharacteristic(reportCharacteristic, actual_report);
+            return report.length;
+        } else {
+            //Log.v(TAG, "writeOutputReport " + HexDump.dumpHexString(report));
+            writeCharacteristic(reportCharacteristic, report);
+            return report.length;
+        }
+    }
+
+    @Override
+    public boolean readReport(byte[] report, boolean feature) {
+        if (!isRegistered()) {
+            Log.e(TAG, "Attempted readReport before Steam Controller is registered!");
+            if (mIsConnected) {
+                probeService(this);
+            }
+            return false;
+        }
+
+        if (feature) {
+            readCharacteristic(reportCharacteristic);
+            return true;
+        } else {
+            // Not implemented
+            return false;
+        }
+    }
+
+    @Override
+    public void close() {
+    }
+
+    @Override
+    public void setFrozen(boolean frozen) {
+        mFrozen = frozen;
+    }
+
+    @Override
+    public void shutdown() {
+        close();
+
+        BluetoothGatt g = mGatt;
+        if (g != null) {
+            g.disconnect();
+            g.close();
+            mGatt = null;
+        }
+        mManager = null;
+        mIsRegistered = false;
+        mIsConnected = false;
+        mOperations.clear();
+    }
+
+}
+
--- a/Android/AndroidProject/app/src/main/java/org/libsdl/app/HIDDeviceManager.java
+++ b/Android/AndroidProject/app/src/main/java/org/libsdl/app/HIDDeviceManager.java
@ -0,0 +1,690 @@
+package org.libsdl.app;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.PendingIntent;
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
+import android.bluetooth.BluetoothManager;
+import android.bluetooth.BluetoothProfile;
+import android.os.Build;
+import android.util.Log;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
+import android.hardware.usb.*;
+import android.os.Handler;
+import android.os.Looper;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+
+public class HIDDeviceManager {
+    private static final String TAG = "hidapi";
+    private static final String ACTION_USB_PERMISSION = "org.libsdl.app.USB_PERMISSION";
+
+    private static HIDDeviceManager sManager;
+    private static int sManagerRefCount = 0;
+
+    static public HIDDeviceManager acquire(Context context) {
+        if (sManagerRefCount == 0) {
+            sManager = new HIDDeviceManager(context);
+        }
+        ++sManagerRefCount;
+        return sManager;
+    }
+
+    static public void release(HIDDeviceManager manager) {
+        if (manager == sManager) {
+            --sManagerRefCount;
+            if (sManagerRefCount == 0) {
+                sManager.close();
+                sManager = null;
+            }
+        }
+    }
+
+    private Context mContext;
+    private HashMap<Integer, HIDDevice> mDevicesById = new HashMap<Integer, HIDDevice>();
+    private HashMap<BluetoothDevice, HIDDeviceBLESteamController> mBluetoothDevices = new HashMap<BluetoothDevice, HIDDeviceBLESteamController>();
+    private int mNextDeviceId = 0;
+    private SharedPreferences mSharedPreferences = null;
+    private boolean mIsChromebook = false;
+    private UsbManager mUsbManager;
+    private Handler mHandler;
+    private BluetoothManager mBluetoothManager;
+    private List<BluetoothDevice> mLastBluetoothDevices;
+
+    private final BroadcastReceiver mUsbBroadcast = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            String action = intent.getAction();
+            if (action.equals(UsbManager.ACTION_USB_DEVICE_ATTACHED)) {
+                UsbDevice usbDevice = intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
+                handleUsbDeviceAttached(usbDevice);
+            } else if (action.equals(UsbManager.ACTION_USB_DEVICE_DETACHED)) {
+                UsbDevice usbDevice = intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
+                handleUsbDeviceDetached(usbDevice);
+            } else if (action.equals(HIDDeviceManager.ACTION_USB_PERMISSION)) {
+                UsbDevice usbDevice = intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
+                handleUsbDevicePermission(usbDevice, intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false));
+            }
+        }
+    };
+
+    private final BroadcastReceiver mBluetoothBroadcast = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            String action = intent.getAction();
+            // Bluetooth device was connected. If it was a Steam Controller, handle it
+            if (action.equals(BluetoothDevice.ACTION_ACL_CONNECTED)) {
+                BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
+                Log.d(TAG, "Bluetooth device connected: " + device);
+
+                if (isSteamController(device)) {
+                    connectBluetoothDevice(device);
+                }
+            }
+
+            // Bluetooth device was disconnected, remove from controller manager (if any)
+            if (action.equals(BluetoothDevice.ACTION_ACL_DISCONNECTED)) {
+                BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
+                Log.d(TAG, "Bluetooth device disconnected: " + device);
+
+                disconnectBluetoothDevice(device);
+            }
+        }
+    };
+
+    private HIDDeviceManager(final Context context) {
+        mContext = context;
+
+        HIDDeviceRegisterCallback();
+
+        mSharedPreferences = mContext.getSharedPreferences("hidapi", Context.MODE_PRIVATE);
+        mIsChromebook = SDLActivity.isChromebook();
+
+//        if (shouldClear) {
+//            SharedPreferences.Editor spedit = mSharedPreferences.edit();
+//            spedit.clear();
+//            spedit.apply();
+//        }
+//        else
+        {
+            mNextDeviceId = mSharedPreferences.getInt("next_device_id", 0);
+        }
+    }
+
+    Context getContext() {
+        return mContext;
+    }
+
+    int getDeviceIDForIdentifier(String identifier) {
+        SharedPreferences.Editor spedit = mSharedPreferences.edit();
+
+        int result = mSharedPreferences.getInt(identifier, 0);
+        if (result == 0) {
+            result = mNextDeviceId++;
+            spedit.putInt("next_device_id", mNextDeviceId);
+        }
+
+        spedit.putInt(identifier, result);
+        spedit.apply();
+        return result;
+    }
+
+    private void initializeUSB() {
+        mUsbManager = (UsbManager)mContext.getSystemService(Context.USB_SERVICE);
+        if (mUsbManager == null) {
+            return;
+        }
+
+        /*
+        // Logging
+        for (UsbDevice device : mUsbManager.getDeviceList().values()) {
+            Log.i(TAG,"Path: " + device.getDeviceName());
+            Log.i(TAG,"Manufacturer: " + device.getManufacturerName());
+            Log.i(TAG,"Product: " + device.getProductName());
+            Log.i(TAG,"ID: " + device.getDeviceId());
+            Log.i(TAG,"Class: " + device.getDeviceClass());
+            Log.i(TAG,"Protocol: " + device.getDeviceProtocol());
+            Log.i(TAG,"Vendor ID " + device.getVendorId());
+            Log.i(TAG,"Product ID: " + device.getProductId());
+            Log.i(TAG,"Interface count: " + device.getInterfaceCount());
+            Log.i(TAG,"---------------------------------------");
+
+            // Get interface details
+            for (int index = 0; index < device.getInterfaceCount(); index++) {
+                UsbInterface mUsbInterface = device.getInterface(index);
+                Log.i(TAG,"  *****     *****");
+                Log.i(TAG,"  Interface index: " + index);
+                Log.i(TAG,"  Interface ID: " + mUsbInterface.getId());
+                Log.i(TAG,"  Interface class: " + mUsbInterface.getInterfaceClass());
+                Log.i(TAG,"  Interface subclass: " + mUsbInterface.getInterfaceSubclass());
+                Log.i(TAG,"  Interface protocol: " + mUsbInterface.getInterfaceProtocol());
+                Log.i(TAG,"  Endpoint count: " + mUsbInterface.getEndpointCount());
+
+                // Get endpoint details
+                for (int epi = 0; epi < mUsbInterface.getEndpointCount(); epi++)
+                {
+                    UsbEndpoint mEndpoint = mUsbInterface.getEndpoint(epi);
+                    Log.i(TAG,"    ++++   ++++   ++++");
+                    Log.i(TAG,"    Endpoint index: " + epi);
+                    Log.i(TAG,"    Attributes: " + mEndpoint.getAttributes());
+                    Log.i(TAG,"    Direction: " + mEndpoint.getDirection());
+                    Log.i(TAG,"    Number: " + mEndpoint.getEndpointNumber());
+                    Log.i(TAG,"    Interval: " + mEndpoint.getInterval());
+                    Log.i(TAG,"    Packet size: " + mEndpoint.getMaxPacketSize());
+                    Log.i(TAG,"    Type: " + mEndpoint.getType());
+                }
+            }
+        }
+        Log.i(TAG," No more devices connected.");
+        */
+
+        // Register for USB broadcasts and permission completions
+        IntentFilter filter = new IntentFilter();
+        filter.addAction(UsbManager.ACTION_USB_DEVICE_ATTACHED);
+        filter.addAction(UsbManager.ACTION_USB_DEVICE_DETACHED);
+        filter.addAction(HIDDeviceManager.ACTION_USB_PERMISSION);
+        if (Build.VERSION.SDK_INT >= 33) { /* Android 13.0 (TIRAMISU) */
+            mContext.registerReceiver(mUsbBroadcast, filter, Context.RECEIVER_EXPORTED);
+        } else {
+            mContext.registerReceiver(mUsbBroadcast, filter);
+        }
+
+        for (UsbDevice usbDevice : mUsbManager.getDeviceList().values()) {
+            handleUsbDeviceAttached(usbDevice);
+        }
+    }
+
+    UsbManager getUSBManager() {
+        return mUsbManager;
+    }
+
+    private void shutdownUSB() {
+        try {
+            mContext.unregisterReceiver(mUsbBroadcast);
+        } catch (Exception e) {
+            // We may not have registered, that's okay
+        }
+    }
+
+    private boolean isHIDDeviceInterface(UsbDevice usbDevice, UsbInterface usbInterface) {
+        if (usbInterface.getInterfaceClass() == UsbConstants.USB_CLASS_HID) {
+            return true;
+        }
+        if (isXbox360Controller(usbDevice, usbInterface) || isXboxOneController(usbDevice, usbInterface)) {
+            return true;
+        }
+        return false;
+    }
+
+    private boolean isXbox360Controller(UsbDevice usbDevice, UsbInterface usbInterface) {
+        final int XB360_IFACE_SUBCLASS = 93;
+        final int XB360_IFACE_PROTOCOL = 1; // Wired
+        final int XB360W_IFACE_PROTOCOL = 129; // Wireless
+        final int[] SUPPORTED_VENDORS = {
+            0x0079, // GPD Win 2
+            0x044f, // Thrustmaster
+            0x045e, // Microsoft
+            0x046d, // Logitech
+            0x056e, // Elecom
+            0x06a3, // Saitek
+            0x0738, // Mad Catz
+            0x07ff, // Mad Catz
+            0x0e6f, // PDP
+            0x0f0d, // Hori
+            0x1038, // SteelSeries
+            0x11c9, // Nacon
+            0x12ab, // Unknown
+            0x1430, // RedOctane
+            0x146b, // BigBen
+            0x1532, // Razer Sabertooth
+            0x15e4, // Numark
+            0x162e, // Joytech
+            0x1689, // Razer Onza
+            0x1949, // Lab126, Inc.
+            0x1bad, // Harmonix
+            0x20d6, // PowerA
+            0x24c6, // PowerA
+            0x2c22, // Qanba
+            0x2dc8, // 8BitDo
+            0x9886, // ASTRO Gaming
+        };
+
+        if (usbInterface.getInterfaceClass() == UsbConstants.USB_CLASS_VENDOR_SPEC &&
+            usbInterface.getInterfaceSubclass() == XB360_IFACE_SUBCLASS &&
+            (usbInterface.getInterfaceProtocol() == XB360_IFACE_PROTOCOL ||
+             usbInterface.getInterfaceProtocol() == XB360W_IFACE_PROTOCOL)) {
+            int vendor_id = usbDevice.getVendorId();
+            for (int supportedVid : SUPPORTED_VENDORS) {
+                if (vendor_id == supportedVid) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    private boolean isXboxOneController(UsbDevice usbDevice, UsbInterface usbInterface) {
+        final int XB1_IFACE_SUBCLASS = 71;
+        final int XB1_IFACE_PROTOCOL = 208;
+        final int[] SUPPORTED_VENDORS = {
+            0x03f0, // HP
+            0x044f, // Thrustmaster
+            0x045e, // Microsoft
+            0x0738, // Mad Catz
+            0x0b05, // ASUS
+            0x0e6f, // PDP
+            0x0f0d, // Hori
+            0x10f5, // Turtle Beach
+            0x1532, // Razer Wildcat
+            0x20d6, // PowerA
+            0x24c6, // PowerA
+            0x294b, // Snakebyte
+            0x2dc8, // 8BitDo
+            0x2e24, // Hyperkin
+            0x2e95, // SCUF
+            0x3285, // Nacon
+            0x3537, // GameSir
+            0x366c, // ByoWave
+        };
+
+        if (usbInterface.getId() == 0 &&
+            usbInterface.getInterfaceClass() == UsbConstants.USB_CLASS_VENDOR_SPEC &&
+            usbInterface.getInterfaceSubclass() == XB1_IFACE_SUBCLASS &&
+            usbInterface.getInterfaceProtocol() == XB1_IFACE_PROTOCOL) {
+            int vendor_id = usbDevice.getVendorId();
+            for (int supportedVid : SUPPORTED_VENDORS) {
+                if (vendor_id == supportedVid) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    private void handleUsbDeviceAttached(UsbDevice usbDevice) {
+        connectHIDDeviceUSB(usbDevice);
+    }
+
+    private void handleUsbDeviceDetached(UsbDevice usbDevice) {
+        List<Integer> devices = new ArrayList<Integer>();
+        for (HIDDevice device : mDevicesById.values()) {
+            if (usbDevice.equals(device.getDevice())) {
+                devices.add(device.getId());
+            }
+        }
+        for (int id : devices) {
+            HIDDevice device = mDevicesById.get(id);
+            mDevicesById.remove(id);
+            device.shutdown();
+            HIDDeviceDisconnected(id);
+        }
+    }
+
+    private void handleUsbDevicePermission(UsbDevice usbDevice, boolean permission_granted) {
+        for (HIDDevice device : mDevicesById.values()) {
+            if (usbDevice.equals(device.getDevice())) {
+                boolean opened = false;
+                if (permission_granted) {
+                    opened = device.open();
+                }
+                HIDDeviceOpenResult(device.getId(), opened);
+            }
+        }
+    }
+
+    private void connectHIDDeviceUSB(UsbDevice usbDevice) {
+        synchronized (this) {
+            int interface_mask = 0;
+            for (int interface_index = 0; interface_index < usbDevice.getInterfaceCount(); interface_index++) {
+                UsbInterface usbInterface = usbDevice.getInterface(interface_index);
+                if (isHIDDeviceInterface(usbDevice, usbInterface)) {
+                    // Check to see if we've already added this interface
+                    // This happens with the Xbox Series X controller which has a duplicate interface 0, which is inactive
+                    int interface_id = usbInterface.getId();
+                    if ((interface_mask & (1 << interface_id)) != 0) {
+                        continue;
+                    }
+                    interface_mask |= (1 << interface_id);
+
+                    HIDDeviceUSB device = new HIDDeviceUSB(this, usbDevice, interface_index);
+                    int id = device.getId();
+                    mDevicesById.put(id, device);
+                    HIDDeviceConnected(id, device.getIdentifier(), device.getVendorId(), device.getProductId(), device.getSerialNumber(), device.getVersion(), device.getManufacturerName(), device.getProductName(), usbInterface.getId(), usbInterface.getInterfaceClass(), usbInterface.getInterfaceSubclass(), usbInterface.getInterfaceProtocol(), false);
+                }
+            }
+        }
+    }
+
+    private void initializeBluetooth() {
+        Log.d(TAG, "Initializing Bluetooth");
+
+        if (Build.VERSION.SDK_INT >= 31 /* Android 12  */ &&
+            mContext.getPackageManager().checkPermission(android.Manifest.permission.BLUETOOTH_CONNECT, mContext.getPackageName()) != PackageManager.PERMISSION_GRANTED) {
+            Log.d(TAG, "Couldn't initialize Bluetooth, missing android.permission.BLUETOOTH_CONNECT");
+            return;
+        }
+
+        if (Build.VERSION.SDK_INT <= 30 /* Android 11.0 (R) */ &&
+            mContext.getPackageManager().checkPermission(android.Manifest.permission.BLUETOOTH, mContext.getPackageName()) != PackageManager.PERMISSION_GRANTED) {
+            Log.d(TAG, "Couldn't initialize Bluetooth, missing android.permission.BLUETOOTH");
+            return;
+        }
+
+        if (!mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE)) {
+            Log.d(TAG, "Couldn't initialize Bluetooth, this version of Android does not support Bluetooth LE");
+            return;
+        }
+
+        // Find bonded bluetooth controllers and create SteamControllers for them
+        mBluetoothManager = (BluetoothManager)mContext.getSystemService(Context.BLUETOOTH_SERVICE);
+        if (mBluetoothManager == null) {
+            // This device doesn't support Bluetooth.
+            return;
+        }
+
+        BluetoothAdapter btAdapter = mBluetoothManager.getAdapter();
+        if (btAdapter == null) {
+            // This device has Bluetooth support in the codebase, but has no available adapters.
+            return;
+        }
+
+        // Get our bonded devices.
+        for (BluetoothDevice device : btAdapter.getBondedDevices()) {
+
+            Log.d(TAG, "Bluetooth device available: " + device);
+            if (isSteamController(device)) {
+                connectBluetoothDevice(device);
+            }
+
+        }
+
+        // NOTE: These don't work on Chromebooks, to my undying dismay.
+        IntentFilter filter = new IntentFilter();
+        filter.addAction(BluetoothDevice.ACTION_ACL_CONNECTED);
+        filter.addAction(BluetoothDevice.ACTION_ACL_DISCONNECTED);
+        if (Build.VERSION.SDK_INT >= 33) { /* Android 13.0 (TIRAMISU) */
+            mContext.registerReceiver(mBluetoothBroadcast, filter, Context.RECEIVER_EXPORTED);
+        } else {
+            mContext.registerReceiver(mBluetoothBroadcast, filter);
+        }
+
+        if (mIsChromebook) {
+            mHandler = new Handler(Looper.getMainLooper());
+            mLastBluetoothDevices = new ArrayList<BluetoothDevice>();
+
+            // final HIDDeviceManager finalThis = this;
+            // mHandler.postDelayed(new Runnable() {
+            //     @Override
+            //     public void run() {
+            //         finalThis.chromebookConnectionHandler();
+            //     }
+            // }, 5000);
+        }
+    }
+
+    private void shutdownBluetooth() {
+        try {
+            mContext.unregisterReceiver(mBluetoothBroadcast);
+        } catch (Exception e) {
+            // We may not have registered, that's okay
+        }
+    }
+
+    // Chromebooks do not pass along ACTION_ACL_CONNECTED / ACTION_ACL_DISCONNECTED properly.
+    // This function provides a sort of dummy version of that, watching for changes in the
+    // connected devices and attempting to add controllers as things change.
+    void chromebookConnectionHandler() {
+        if (!mIsChromebook) {
+            return;
+        }
+
+        ArrayList<BluetoothDevice> disconnected = new ArrayList<BluetoothDevice>();
+        ArrayList<BluetoothDevice> connected = new ArrayList<BluetoothDevice>();
+
+        List<BluetoothDevice> currentConnected = mBluetoothManager.getConnectedDevices(BluetoothProfile.GATT);
+
+        for (BluetoothDevice bluetoothDevice : currentConnected) {
+            if (!mLastBluetoothDevices.contains(bluetoothDevice)) {
+                connected.add(bluetoothDevice);
+            }
+        }
+        for (BluetoothDevice bluetoothDevice : mLastBluetoothDevices) {
+            if (!currentConnected.contains(bluetoothDevice)) {
+                disconnected.add(bluetoothDevice);
+            }
+        }
+
+        mLastBluetoothDevices = currentConnected;
+
+        for (BluetoothDevice bluetoothDevice : disconnected) {
+            disconnectBluetoothDevice(bluetoothDevice);
+        }
+        for (BluetoothDevice bluetoothDevice : connected) {
+            connectBluetoothDevice(bluetoothDevice);
+        }
+
+        final HIDDeviceManager finalThis = this;
+        mHandler.postDelayed(new Runnable() {
+            @Override
+            public void run() {
+                finalThis.chromebookConnectionHandler();
+            }
+        }, 10000);
+    }
+
+    boolean connectBluetoothDevice(BluetoothDevice bluetoothDevice) {
+        Log.v(TAG, "connectBluetoothDevice device=" + bluetoothDevice);
+        synchronized (this) {
+            if (mBluetoothDevices.containsKey(bluetoothDevice)) {
+                Log.v(TAG, "Steam controller with address " + bluetoothDevice + " already exists, attempting reconnect");
+
+                HIDDeviceBLESteamController device = mBluetoothDevices.get(bluetoothDevice);
+                device.reconnect();
+
+                return false;
+            }
+            HIDDeviceBLESteamController device = new HIDDeviceBLESteamController(this, bluetoothDevice);
+            int id = device.getId();
+            mBluetoothDevices.put(bluetoothDevice, device);
+            mDevicesById.put(id, device);
+
+            // The Steam Controller will mark itself connected once initialization is complete
+        }
+        return true;
+    }
+
+    void disconnectBluetoothDevice(BluetoothDevice bluetoothDevice) {
+        synchronized (this) {
+            HIDDeviceBLESteamController device = mBluetoothDevices.get(bluetoothDevice);
+            if (device == null)
+                return;
+
+            int id = device.getId();
+            mBluetoothDevices.remove(bluetoothDevice);
+            mDevicesById.remove(id);
+            device.shutdown();
+            HIDDeviceDisconnected(id);
+        }
+    }
+
+    boolean isSteamController(BluetoothDevice bluetoothDevice) {
+        // Sanity check.  If you pass in a null device, by definition it is never a Steam Controller.
+        if (bluetoothDevice == null) {
+            return false;
+        }
+
+        // If the device has no local name, we really don't want to try an equality check against it.
+        if (bluetoothDevice.getName() == null) {
+            return false;
+        }
+
+        return bluetoothDevice.getName().equals("SteamController") && ((bluetoothDevice.getType() & BluetoothDevice.DEVICE_TYPE_LE) != 0);
+    }
+
+    private void close() {
+        shutdownUSB();
+        shutdownBluetooth();
+        synchronized (this) {
+            for (HIDDevice device : mDevicesById.values()) {
+                device.shutdown();
+            }
+            mDevicesById.clear();
+            mBluetoothDevices.clear();
+            HIDDeviceReleaseCallback();
+        }
+    }
+
+    public void setFrozen(boolean frozen) {
+        synchronized (this) {
+            for (HIDDevice device : mDevicesById.values()) {
+                device.setFrozen(frozen);
+            }
+        }
+    }
+
+    //////////////////////////////////////////////////////////////////////////////////////////////////////
+    //////////////////////////////////////////////////////////////////////////////////////////////////////
+    //////////////////////////////////////////////////////////////////////////////////////////////////////
+
+    private HIDDevice getDevice(int id) {
+        synchronized (this) {
+            HIDDevice result = mDevicesById.get(id);
+            if (result == null) {
+                Log.v(TAG, "No device for id: " + id);
+                Log.v(TAG, "Available devices: " + mDevicesById.keySet());
+            }
+            return result;
+        }
+    }
+
+    //////////////////////////////////////////////////////////////////////////////////////////////////////
+    ////////// JNI interface functions
+    //////////////////////////////////////////////////////////////////////////////////////////////////////
+
+    boolean initialize(boolean usb, boolean bluetooth) {
+        Log.v(TAG, "initialize(" + usb + ", " + bluetooth + ")");
+
+        if (usb) {
+            initializeUSB();
+        }
+        if (bluetooth) {
+            initializeBluetooth();
+        }
+        return true;
+    }
+
+    boolean openDevice(int deviceID) {
+        Log.v(TAG, "openDevice deviceID=" + deviceID);
+        HIDDevice device = getDevice(deviceID);
+        if (device == null) {
+            HIDDeviceDisconnected(deviceID);
+            return false;
+        }
+
+        // Look to see if this is a USB device and we have permission to access it
+        UsbDevice usbDevice = device.getDevice();
+        if (usbDevice != null && !mUsbManager.hasPermission(usbDevice)) {
+            HIDDeviceOpenPending(deviceID);
+            try {
+                final int FLAG_MUTABLE = 0x02000000; // PendingIntent.FLAG_MUTABLE, but don't require SDK 31
+                int flags;
+                if (Build.VERSION.SDK_INT >= 31 /* Android 12.0 (S) */) {
+                    flags = FLAG_MUTABLE;
+                } else {
+                    flags = 0;
+                }
+
+                Intent intent = new Intent(HIDDeviceManager.ACTION_USB_PERMISSION);
+                intent.setPackage(mContext.getPackageName());
+                mUsbManager.requestPermission(usbDevice, PendingIntent.getBroadcast(mContext, 0, intent, flags));
+            } catch (Exception e) {
+                Log.v(TAG, "Couldn't request permission for USB device " + usbDevice);
+                HIDDeviceOpenResult(deviceID, false);
+            }
+            return false;
+        }
+
+        try {
+            return device.open();
+        } catch (Exception e) {
+            Log.e(TAG, "Got exception: " + Log.getStackTraceString(e));
+        }
+        return false;
+    }
+
+    int writeReport(int deviceID, byte[] report, boolean feature) {
+        try {
+            //Log.v(TAG, "writeReport deviceID=" + deviceID + " length=" + report.length);
+            HIDDevice device;
+            device = getDevice(deviceID);
+            if (device == null) {
+                HIDDeviceDisconnected(deviceID);
+                return -1;
+            }
+
+            return device.writeReport(report, feature);
+        } catch (Exception e) {
+            Log.e(TAG, "Got exception: " + Log.getStackTraceString(e));
+        }
+        return -1;
+    }
+
+    boolean readReport(int deviceID, byte[] report, boolean feature) {
+        try {
+            //Log.v(TAG, "readReport deviceID=" + deviceID);
+            HIDDevice device;
+            device = getDevice(deviceID);
+            if (device == null) {
+                HIDDeviceDisconnected(deviceID);
+                return false;
+            }
+
+            return device.readReport(report, feature);
+        } catch (Exception e) {
+            Log.e(TAG, "Got exception: " + Log.getStackTraceString(e));
+        }
+        return false;
+    }
+
+    void closeDevice(int deviceID) {
+        try {
+            Log.v(TAG, "closeDevice deviceID=" + deviceID);
+            HIDDevice device;
+            device = getDevice(deviceID);
+            if (device == null) {
+                HIDDeviceDisconnected(deviceID);
+                return;
+            }
+
+            device.close();
+        } catch (Exception e) {
+            Log.e(TAG, "Got exception: " + Log.getStackTraceString(e));
+        }
+    }
+
+
+    //////////////////////////////////////////////////////////////////////////////////////////////////////
+    /////////////// Native methods
+    //////////////////////////////////////////////////////////////////////////////////////////////////////
+
+    private native void HIDDeviceRegisterCallback();
+    private native void HIDDeviceReleaseCallback();
+
+    native void HIDDeviceConnected(int deviceID, String identifier, int vendorId, int productId, String serial_number, int release_number, String manufacturer_string, String product_string, int interface_number, int interface_class, int interface_subclass, int interface_protocol, boolean bBluetooth);
+    native void HIDDeviceOpenPending(int deviceID);
+    native void HIDDeviceOpenResult(int deviceID, boolean opened);
+    native void HIDDeviceDisconnected(int deviceID);
+
+    native void HIDDeviceInputReport(int deviceID, byte[] report);
+    native void HIDDeviceReportResponse(int deviceID, byte[] report);
+}
--- a/Android/AndroidProject/app/src/main/java/org/libsdl/app/HIDDeviceUSB.java
+++ b/Android/AndroidProject/app/src/main/java/org/libsdl/app/HIDDeviceUSB.java
@ -0,0 +1,313 @@
+package org.libsdl.app;
+
+import android.hardware.usb.*;
+import android.os.Build;
+import android.util.Log;
+import java.util.Arrays;
+import java.util.Locale;
+
+class HIDDeviceUSB implements HIDDevice {
+
+    private static final String TAG = "hidapi";
+
+    protected HIDDeviceManager mManager;
+    protected UsbDevice mDevice;
+    protected int mInterfaceIndex;
+    protected int mInterface;
+    protected int mDeviceId;
+    protected UsbDeviceConnection mConnection;
+    protected UsbEndpoint mInputEndpoint;
+    protected UsbEndpoint mOutputEndpoint;
+    protected InputThread mInputThread;
+    protected boolean mRunning;
+    protected boolean mFrozen;
+
+    public HIDDeviceUSB(HIDDeviceManager manager, UsbDevice usbDevice, int interface_index) {
+        mManager = manager;
+        mDevice = usbDevice;
+        mInterfaceIndex = interface_index;
+        mInterface = mDevice.getInterface(mInterfaceIndex).getId();
+        mDeviceId = manager.getDeviceIDForIdentifier(getIdentifier());
+        mRunning = false;
+    }
+
+    String getIdentifier() {
+        return String.format(Locale.ENGLISH, "%s/%x/%x/%d", mDevice.getDeviceName(), mDevice.getVendorId(), mDevice.getProductId(), mInterfaceIndex);
+    }
+
+    @Override
+    public int getId() {
+        return mDeviceId;
+    }
+
+    @Override
+    public int getVendorId() {
+        return mDevice.getVendorId();
+    }
+
+    @Override
+    public int getProductId() {
+        return mDevice.getProductId();
+    }
+
+    @Override
+    public String getSerialNumber() {
+        String result = null;
+        try {
+            result = mDevice.getSerialNumber();
+        }
+        catch (SecurityException exception) {
+            //Log.w(TAG, "App permissions mean we cannot get serial number for device " + getDeviceName() + " message: " + exception.getMessage());
+        }
+        if (result == null) {
+            result = "";
+        }
+        return result;
+    }
+
+    @Override
+    public int getVersion() {
+        return 0;
+    }
+
+    @Override
+    public String getManufacturerName() {
+        String result;
+        result = mDevice.getManufacturerName();
+        if (result == null) {
+            result = String.format("%x", getVendorId());
+        }
+        return result;
+    }
+
+    @Override
+    public String getProductName() {
+        String result;
+        result = mDevice.getProductName();
+        if (result == null) {
+            result = String.format("%x", getProductId());
+        }
+        return result;
+    }
+
+    @Override
+    public UsbDevice getDevice() {
+        return mDevice;
+    }
+
+    String getDeviceName() {
+        return getManufacturerName() + " " + getProductName() + "(0x" + String.format("%x", getVendorId()) + "/0x" + String.format("%x", getProductId()) + ")";
+    }
+
+    @Override
+    public boolean open() {
+        mConnection = mManager.getUSBManager().openDevice(mDevice);
+        if (mConnection == null) {
+            Log.w(TAG, "Unable to open USB device " + getDeviceName());
+            return false;
+        }
+
+        // Force claim our interface
+        UsbInterface iface = mDevice.getInterface(mInterfaceIndex);
+        if (!mConnection.claimInterface(iface, true)) {
+            Log.w(TAG, "Failed to claim interfaces on USB device " + getDeviceName());
+            close();
+            return false;
+        }
+
+        // Find the endpoints
+        for (int j = 0; j < iface.getEndpointCount(); j++) {
+            UsbEndpoint endpt = iface.getEndpoint(j);
+            switch (endpt.getDirection()) {
+            case UsbConstants.USB_DIR_IN:
+                if (mInputEndpoint == null) {
+                    mInputEndpoint = endpt;
+                }
+                break;
+            case UsbConstants.USB_DIR_OUT:
+                if (mOutputEndpoint == null) {
+                    mOutputEndpoint = endpt;
+                }
+                break;
+            }
+        }
+
+        // Make sure the required endpoints were present
+        if (mInputEndpoint == null || mOutputEndpoint == null) {
+            Log.w(TAG, "Missing required endpoint on USB device " + getDeviceName());
+            close();
+            return false;
+        }
+
+        // Start listening for input
+        mRunning = true;
+        mInputThread = new InputThread();
+        mInputThread.start();
+
+        return true;
+    }
+
+    @Override
+    public int writeReport(byte[] report, boolean feature) {
+        if (mConnection == null) {
+            Log.w(TAG, "writeReport() called with no device connection");
+            return -1;
+        }
+
+        if (feature) {
+            int res = -1;
+            int offset = 0;
+            int length = report.length;
+            boolean skipped_report_id = false;
+            byte report_number = report[0];
+
+            if (report_number == 0x0) {
+                ++offset;
+                --length;
+                skipped_report_id = true;
+            }
+
+            res = mConnection.controlTransfer(
+                UsbConstants.USB_TYPE_CLASS | 0x01 /*RECIPIENT_INTERFACE*/ | UsbConstants.USB_DIR_OUT,
+                0x09/*HID set_report*/,
+                (3/*HID feature*/ << 8) | report_number,
+                mInterface,
+                report, offset, length,
+                1000/*timeout millis*/);
+
+            if (res < 0) {
+                Log.w(TAG, "writeFeatureReport() returned " + res + " on device " + getDeviceName());
+                return -1;
+            }
+
+            if (skipped_report_id) {
+                ++length;
+            }
+            return length;
+        } else {
+            int res = mConnection.bulkTransfer(mOutputEndpoint, report, report.length, 1000);
+            if (res != report.length) {
+                Log.w(TAG, "writeOutputReport() returned " + res + " on device " + getDeviceName());
+            }
+            return res;
+        }
+    }
+
+    @Override
+    public boolean readReport(byte[] report, boolean feature) {
+        int res = -1;
+        int offset = 0;
+        int length = report.length;
+        boolean skipped_report_id = false;
+        byte report_number = report[0];
+
+        if (mConnection == null) {
+            Log.w(TAG, "readReport() called with no device connection");
+            return false;
+        }
+
+        if (report_number == 0x0) {
+            /* Offset the return buffer by 1, so that the report ID
+               will remain in byte 0. */
+            ++offset;
+            --length;
+            skipped_report_id = true;
+        }
+
+        res = mConnection.controlTransfer(
+            UsbConstants.USB_TYPE_CLASS | 0x01 /*RECIPIENT_INTERFACE*/ | UsbConstants.USB_DIR_IN,
+            0x01/*HID get_report*/,
+            ((feature ? 3/*HID feature*/ : 1/*HID Input*/) << 8) | report_number,
+            mInterface,
+            report, offset, length,
+            1000/*timeout millis*/);
+
+        if (res < 0) {
+            Log.w(TAG, "getFeatureReport() returned " + res + " on device " + getDeviceName());
+            return false;
+        }
+
+        if (skipped_report_id) {
+            ++res;
+            ++length;
+        }
+
+        byte[] data;
+        if (res == length) {
+            data = report;
+        } else {
+            data = Arrays.copyOfRange(report, 0, res);
+        }
+        mManager.HIDDeviceReportResponse(mDeviceId, data);
+
+        return true;
+    }
+
+    @Override
+    public void close() {
+        mRunning = false;
+        if (mInputThread != null) {
+            while (mInputThread.isAlive()) {
+                mInputThread.interrupt();
+                try {
+                    mInputThread.join();
+                } catch (InterruptedException e) {
+                    // Keep trying until we're done
+                }
+            }
+            mInputThread = null;
+        }
+        if (mConnection != null) {
+            UsbInterface iface = mDevice.getInterface(mInterfaceIndex);
+            mConnection.releaseInterface(iface);
+            mConnection.close();
+            mConnection = null;
+        }
+    }
+
+    @Override
+    public void shutdown() {
+        close();
+        mManager = null;
+    }
+
+    @Override
+    public void setFrozen(boolean frozen) {
+        mFrozen = frozen;
+    }
+
+    protected class InputThread extends Thread {
+        @Override
+        public void run() {
+            int packetSize = mInputEndpoint.getMaxPacketSize();
+            byte[] packet = new byte[packetSize];
+            while (mRunning) {
+                int r;
+                try
+                {
+                    r = mConnection.bulkTransfer(mInputEndpoint, packet, packetSize, 1000);
+                }
+                catch (Exception e)
+                {
+                    Log.v(TAG, "Exception in UsbDeviceConnection bulktransfer: " + e);
+                    break;
+                }
+                if (r < 0) {
+                    // Could be a timeout or an I/O error
+                }
+                if (r > 0) {
+                    byte[] data;
+                    if (r == packetSize) {
+                        data = packet;
+                    } else {
+                        data = Arrays.copyOfRange(packet, 0, r);
+                    }
+
+                    if (!mFrozen) {
+                        mManager.HIDDeviceInputReport(mDeviceId, data);
+                    }
+                }
+            }
+        }
+    }
+}
--- a/Android/AndroidProject/app/src/main/java/org/libsdl/app/SDL.java
+++ b/Android/AndroidProject/app/src/main/java/org/libsdl/app/SDL.java
@ -0,0 +1,90 @@
+package org.libsdl.app;
+
+import android.app.Activity;
+import android.content.Context;
+
+import java.lang.reflect.Method;
+
+/**
+    SDL library initialization
+*/
+public class SDL {
+
+    // This function should be called first and sets up the native code
+    // so it can call into the Java classes
+    static public void setupJNI() {
+        SDLActivity.nativeSetupJNI();
+        SDLAudioManager.nativeSetupJNI();
+        SDLControllerManager.nativeSetupJNI();
+    }
+
+    // This function should be called each time the activity is started
+    static public void initialize() {
+        setContext(null);
+
+        SDLActivity.initialize();
+        SDLAudioManager.initialize();
+        SDLControllerManager.initialize();
+    }
+
+    // This function stores the current activity (SDL or not)
+    static public void setContext(Activity context) {
+        SDLAudioManager.setContext(context);
+        mContext = context;
+    }
+
+    static public Activity getContext() {
+        return mContext;
+    }
+
+    static void loadLibrary(String libraryName) throws UnsatisfiedLinkError, SecurityException, NullPointerException {
+        loadLibrary(libraryName, mContext);
+    }
+
+    static void loadLibrary(String libraryName, Context context) throws UnsatisfiedLinkError, SecurityException, NullPointerException {
+
+        if (libraryName == null) {
+            throw new NullPointerException("No library name provided.");
+        }
+
+        try {
+            // Let's see if we have ReLinker available in the project.  This is necessary for
+            // some projects that have huge numbers of local libraries bundled, and thus may
+            // trip a bug in Android's native library loader which ReLinker works around.  (If
+            // loadLibrary works properly, ReLinker will simply use the normal Android method
+            // internally.)
+            //
+            // To use ReLinker, just add it as a dependency.  For more information, see
+            // https://github.com/KeepSafe/ReLinker for ReLinker's repository.
+            //
+            Class<?> relinkClass = context.getClassLoader().loadClass("com.getkeepsafe.relinker.ReLinker");
+            Class<?> relinkListenerClass = context.getClassLoader().loadClass("com.getkeepsafe.relinker.ReLinker$LoadListener");
+            Class<?> contextClass = context.getClassLoader().loadClass("android.content.Context");
+            Class<?> stringClass = context.getClassLoader().loadClass("java.lang.String");
+
+            // Get a 'force' instance of the ReLinker, so we can ensure libraries are reinstalled if
+            // they've changed during updates.
+            Method forceMethod = relinkClass.getDeclaredMethod("force");
+            Object relinkInstance = forceMethod.invoke(null);
+            Class<?> relinkInstanceClass = relinkInstance.getClass();
+
+            // Actually load the library!
+            Method loadMethod = relinkInstanceClass.getDeclaredMethod("loadLibrary", contextClass, stringClass, stringClass, relinkListenerClass);
+            loadMethod.invoke(relinkInstance, context, libraryName, null, null);
+        }
+        catch (final Throwable e) {
+            // Fall back
+            try {
+                System.loadLibrary(libraryName);
+            }
+            catch (final UnsatisfiedLinkError ule) {
+                throw ule;
+            }
+            catch (final SecurityException se) {
+                throw se;
+            }
+        }
+    }
+
+    protected static Activity mContext;
+}
--- a/Android/AndroidProject/app/src/main/java/org/libsdl/app/SDLActivity.java
+++ b/Android/AndroidProject/app/src/main/java/org/libsdl/app/SDLActivity.java
--- a/Android/AndroidProject/app/src/main/java/org/libsdl/app/SDLAudioManager.java
+++ b/Android/AndroidProject/app/src/main/java/org/libsdl/app/SDLAudioManager.java
@ -0,0 +1,126 @@
+package org.libsdl.app;
+
+import android.content.Context;
+import android.media.AudioDeviceCallback;
+import android.media.AudioDeviceInfo;
+import android.media.AudioManager;
+import android.os.Build;
+import android.util.Log;
+
+import java.util.Arrays;
+import java.util.ArrayList;
+
+class SDLAudioManager {
+    protected static final String TAG = "SDLAudio";
+
+    protected static Context mContext;
+
+    private static AudioDeviceCallback mAudioDeviceCallback;
+
+    static void initialize() {
+        mAudioDeviceCallback = null;
+
+        if(Build.VERSION.SDK_INT >= 24 /* Android 7.0 (N) */)
+        {
+            mAudioDeviceCallback = new AudioDeviceCallback() {
+                @Override
+                public void onAudioDevicesAdded(AudioDeviceInfo[] addedDevices) {
+                    for (AudioDeviceInfo deviceInfo : addedDevices) {
+                        nativeAddAudioDevice(deviceInfo.isSink(), deviceInfo.getProductName().toString(), deviceInfo.getId());
+                    }
+                }
+
+                @Override
+                public void onAudioDevicesRemoved(AudioDeviceInfo[] removedDevices) {
+                    for (AudioDeviceInfo deviceInfo : removedDevices) {
+                        nativeRemoveAudioDevice(deviceInfo.isSink(), deviceInfo.getId());
+                    }
+                }
+            };
+        }
+    }
+
+    static void setContext(Context context) {
+        mContext = context;
+    }
+
+    static void release(Context context) {
+        // no-op atm
+    }
+
+    // Audio
+
+    private static AudioDeviceInfo getInputAudioDeviceInfo(int deviceId) {
+        if (Build.VERSION.SDK_INT >= 24 /* Android 7.0 (N) */) {
+            AudioManager audioManager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
+            for (AudioDeviceInfo deviceInfo : audioManager.getDevices(AudioManager.GET_DEVICES_INPUTS)) {
+                if (deviceInfo.getId() == deviceId) {
+                    return deviceInfo;
+                }
+            }
+        }
+        return null;
+    }
+
+    private static AudioDeviceInfo getPlaybackAudioDeviceInfo(int deviceId) {
+        if (Build.VERSION.SDK_INT >= 24 /* Android 7.0 (N) */) {
+            AudioManager audioManager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
+            for (AudioDeviceInfo deviceInfo : audioManager.getDevices(AudioManager.GET_DEVICES_OUTPUTS)) {
+                if (deviceInfo.getId() == deviceId) {
+                    return deviceInfo;
+                }
+            }
+        }
+        return null;
+    }
+
+    static void registerAudioDeviceCallback() {
+        if (Build.VERSION.SDK_INT >= 24 /* Android 7.0 (N) */) {
+            AudioManager audioManager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
+            // get an initial list now, before hotplug callbacks fire.
+            for (AudioDeviceInfo dev : audioManager.getDevices(AudioManager.GET_DEVICES_OUTPUTS)) {
+                if (dev.getType() == AudioDeviceInfo.TYPE_TELEPHONY) {
+                    continue;  // Device cannot be opened
+                }
+                nativeAddAudioDevice(dev.isSink(), dev.getProductName().toString(), dev.getId());
+            }
+            for (AudioDeviceInfo dev : audioManager.getDevices(AudioManager.GET_DEVICES_INPUTS)) {
+                nativeAddAudioDevice(dev.isSink(), dev.getProductName().toString(), dev.getId());
+            }
+            audioManager.registerAudioDeviceCallback(mAudioDeviceCallback, null);
+        }
+    }
+
+    static void unregisterAudioDeviceCallback() {
+        if (Build.VERSION.SDK_INT >= 24 /* Android 7.0 (N) */) {
+            AudioManager audioManager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
+            audioManager.unregisterAudioDeviceCallback(mAudioDeviceCallback);
+        }
+    }
+
+    /** This method is called by SDL using JNI. */
+    static void audioSetThreadPriority(boolean recording, int device_id) {
+        try {
+
+            /* Set thread name */
+            if (recording) {
+                Thread.currentThread().setName("SDLAudioC" + device_id);
+            } else {
+                Thread.currentThread().setName("SDLAudioP" + device_id);
+            }
+
+            /* Set thread priority */
+            android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_AUDIO);
+
+        } catch (Exception e) {
+            Log.v(TAG, "modify thread properties failed " + e.toString());
+        }
+    }
+
+    static native void nativeSetupJNI();
+
+    static native void nativeRemoveAudioDevice(boolean recording, int deviceId);
+
+    static native void nativeAddAudioDevice(boolean recording, String name, int deviceId);
+
+}
--- a/Android/AndroidProject/app/src/main/java/org/libsdl/app/SDLControllerManager.java
+++ b/Android/AndroidProject/app/src/main/java/org/libsdl/app/SDLControllerManager.java
@ -0,0 +1,877 @@
+package org.libsdl.app;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+
+import android.content.Context;
+import android.os.Build;
+import android.os.VibrationEffect;
+import android.os.Vibrator;
+import android.os.VibratorManager;
+import android.util.Log;
+import android.view.InputDevice;
+import android.view.KeyEvent;
+import android.view.MotionEvent;
+import android.view.View;
+
+
+public class SDLControllerManager
+{
+
+    static native void nativeSetupJNI();
+
+    static native void nativeAddJoystick(int device_id, String name, String desc,
+                                                int vendor_id, int product_id,
+                                                int button_mask,
+                                                int naxes, int axis_mask, int nhats, boolean can_rumble);
+    static native void nativeRemoveJoystick(int device_id);
+    static native void nativeAddHaptic(int device_id, String name);
+    static native void nativeRemoveHaptic(int device_id);
+    static public native boolean onNativePadDown(int device_id, int keycode);
+    static public native boolean onNativePadUp(int device_id, int keycode);
+    static native void onNativeJoy(int device_id, int axis,
+                                          float value);
+    static native void onNativeHat(int device_id, int hat_id,
+                                          int x, int y);
+
+    protected static SDLJoystickHandler mJoystickHandler;
+    protected static SDLHapticHandler mHapticHandler;
+
+    private static final String TAG = "SDLControllerManager";
+
+    static void initialize() {
+        if (mJoystickHandler == null) {
+            mJoystickHandler = new SDLJoystickHandler();
+        }
+
+        if (mHapticHandler == null) {
+            if (Build.VERSION.SDK_INT >= 31 /* Android 12.0 (S) */) {
+                mHapticHandler = new SDLHapticHandler_API31();
+            } else if (Build.VERSION.SDK_INT >= 26 /* Android 8.0 (O) */) {
+                mHapticHandler = new SDLHapticHandler_API26();
+            } else {
+                mHapticHandler = new SDLHapticHandler();
+            }
+        }
+    }
+
+    // Joystick glue code, just a series of stubs that redirect to the SDLJoystickHandler instance
+    static public boolean handleJoystickMotionEvent(MotionEvent event) {
+        return mJoystickHandler.handleMotionEvent(event);
+    }
+
+    /**
+     * This method is called by SDL using JNI.
+     */
+    static void pollInputDevices() {
+        mJoystickHandler.pollInputDevices();
+    }
+
+    /**
+     * This method is called by SDL using JNI.
+     */
+    static void pollHapticDevices() {
+        mHapticHandler.pollHapticDevices();
+    }
+
+    /**
+     * This method is called by SDL using JNI.
+     */
+    static void hapticRun(int device_id, float intensity, int length) {
+        mHapticHandler.run(device_id, intensity, length);
+    }
+
+    /**
+     * This method is called by SDL using JNI.
+     */
+    static void hapticRumble(int device_id, float low_frequency_intensity, float high_frequency_intensity, int length) {
+        mHapticHandler.rumble(device_id, low_frequency_intensity, high_frequency_intensity, length);
+    }
+
+    /**
+     * This method is called by SDL using JNI.
+     */
+    static void hapticStop(int device_id)
+    {
+        mHapticHandler.stop(device_id);
+    }
+
+    // Check if a given device is considered a possible SDL joystick
+    static public boolean isDeviceSDLJoystick(int deviceId) {
+        InputDevice device = InputDevice.getDevice(deviceId);
+        // We cannot use InputDevice.isVirtual before API 16, so let's accept
+        // only nonnegative device ids (VIRTUAL_KEYBOARD equals -1)
+        if ((device == null) || (deviceId < 0)) {
+            return false;
+        }
+        int sources = device.getSources();
+
+        /* This is called for every button press, so let's not spam the logs */
+        /*
+        if ((sources & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) {
+            Log.v(TAG, "Input device " + device.getName() + " has class joystick.");
+        }
+        if ((sources & InputDevice.SOURCE_DPAD) == InputDevice.SOURCE_DPAD) {
+            Log.v(TAG, "Input device " + device.getName() + " is a dpad.");
+        }
+        if ((sources & InputDevice.SOURCE_GAMEPAD) == InputDevice.SOURCE_GAMEPAD) {
+            Log.v(TAG, "Input device " + device.getName() + " is a gamepad.");
+        }
+        */
+
+        return ((sources & InputDevice.SOURCE_CLASS_JOYSTICK) != 0 ||
+                ((sources & InputDevice.SOURCE_DPAD) == InputDevice.SOURCE_DPAD) ||
+                ((sources & InputDevice.SOURCE_GAMEPAD) == InputDevice.SOURCE_GAMEPAD)
+        );
+    }
+
+}
+
+
+/* Actual joystick functionality available for API >= 19 devices */
+class SDLJoystickHandler {
+
+    static class SDLJoystick {
+        int device_id;
+        String name;
+        String desc;
+        ArrayList<InputDevice.MotionRange> axes;
+        ArrayList<InputDevice.MotionRange> hats;
+    }
+    static class RangeComparator implements Comparator<InputDevice.MotionRange> {
+        @Override
+        public int compare(InputDevice.MotionRange arg0, InputDevice.MotionRange arg1) {
+            // Some controllers, like the Moga Pro 2, return AXIS_GAS (22) for right trigger and AXIS_BRAKE (23) for left trigger - swap them so they're sorted in the right order for SDL
+            int arg0Axis = arg0.getAxis();
+            int arg1Axis = arg1.getAxis();
+            if (arg0Axis == MotionEvent.AXIS_GAS) {
+                arg0Axis = MotionEvent.AXIS_BRAKE;
+            } else if (arg0Axis == MotionEvent.AXIS_BRAKE) {
+                arg0Axis = MotionEvent.AXIS_GAS;
+            }
+            if (arg1Axis == MotionEvent.AXIS_GAS) {
+                arg1Axis = MotionEvent.AXIS_BRAKE;
+            } else if (arg1Axis == MotionEvent.AXIS_BRAKE) {
+                arg1Axis = MotionEvent.AXIS_GAS;
+            }
+
+            // Make sure the AXIS_Z is sorted between AXIS_RY and AXIS_RZ.
+            // This is because the usual pairing are:
+            // - AXIS_X + AXIS_Y (left stick).
+            // - AXIS_RX, AXIS_RY (sometimes the right stick, sometimes triggers).
+            // - AXIS_Z, AXIS_RZ (sometimes the right stick, sometimes triggers).
+            // This sorts the axes in the above order, which tends to be correct
+            // for Xbox-ish game pads that have the right stick on RX/RY and the
+            // triggers on Z/RZ.
+            //
+            // Gamepads that don't have AXIS_Z/AXIS_RZ but use
+            // AXIS_LTRIGGER/AXIS_RTRIGGER are unaffected by this.
+            //
+            // References:
+            // - https://developer.android.com/develop/ui/views/touch-and-input/game-controllers/controller-input
+            // - https://www.kernel.org/doc/html/latest/input/gamepad.html
+            if (arg0Axis == MotionEvent.AXIS_Z) {
+                arg0Axis = MotionEvent.AXIS_RZ - 1;
+            } else if (arg0Axis > MotionEvent.AXIS_Z && arg0Axis < MotionEvent.AXIS_RZ) {
+                --arg0Axis;
+            }
+            if (arg1Axis == MotionEvent.AXIS_Z) {
+                arg1Axis = MotionEvent.AXIS_RZ - 1;
+            } else if (arg1Axis > MotionEvent.AXIS_Z && arg1Axis < MotionEvent.AXIS_RZ) {
+                --arg1Axis;
+            }
+
+            return arg0Axis - arg1Axis;
+        }
+    }
+
+    private final ArrayList<SDLJoystick> mJoysticks;
+
+    SDLJoystickHandler() {
+
+        mJoysticks = new ArrayList<SDLJoystick>();
+    }
+
+    /**
+     * Handles adding and removing of input devices.
+     */
+    void pollInputDevices() {
+        int[] deviceIds = InputDevice.getDeviceIds();
+
+        for (int device_id : deviceIds) {
+            if (SDLControllerManager.isDeviceSDLJoystick(device_id)) {
+                SDLJoystick joystick = getJoystick(device_id);
+                if (joystick == null) {
+                    InputDevice joystickDevice = InputDevice.getDevice(device_id);
+                    joystick = new SDLJoystick();
+                    joystick.device_id = device_id;
+                    joystick.name = joystickDevice.getName();
+                    joystick.desc = getJoystickDescriptor(joystickDevice);
+                    joystick.axes = new ArrayList<InputDevice.MotionRange>();
+                    joystick.hats = new ArrayList<InputDevice.MotionRange>();
+
+                    List<InputDevice.MotionRange> ranges = joystickDevice.getMotionRanges();
+                    Collections.sort(ranges, new RangeComparator());
+                    for (InputDevice.MotionRange range : ranges) {
+                        if ((range.getSource() & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) {
+                            if (range.getAxis() == MotionEvent.AXIS_HAT_X || range.getAxis() == MotionEvent.AXIS_HAT_Y) {
+                                joystick.hats.add(range);
+                            } else {
+                                joystick.axes.add(range);
+                            }
+                        }
+                    }
+
+                    boolean can_rumble = false;
+                    if (Build.VERSION.SDK_INT >= 31 /* Android 12.0 (S) */) {
+                        VibratorManager manager = joystickDevice.getVibratorManager();
+                        int[] vibrators = manager.getVibratorIds();
+                        if (vibrators.length > 0) {
+                            can_rumble = true;
+                        }
+                    }
+
+                    mJoysticks.add(joystick);
+                    SDLControllerManager.nativeAddJoystick(joystick.device_id, joystick.name, joystick.desc,
+                            getVendorId(joystickDevice), getProductId(joystickDevice),
+                            getButtonMask(joystickDevice), joystick.axes.size(), getAxisMask(joystick.axes), joystick.hats.size()/2, can_rumble);
+                }
+            }
+        }
+
+        /* Check removed devices */
+        ArrayList<Integer> removedDevices = null;
+        for (SDLJoystick joystick : mJoysticks) {
+            int device_id = joystick.device_id;
+            int i;
+            for (i = 0; i < deviceIds.length; i++) {
+                if (device_id == deviceIds[i]) break;
+            }
+            if (i == deviceIds.length) {
+                if (removedDevices == null) {
+                    removedDevices = new ArrayList<Integer>();
+                }
+                removedDevices.add(device_id);
+            }
+        }
+
+        if (removedDevices != null) {
+            for (int device_id : removedDevices) {
+                SDLControllerManager.nativeRemoveJoystick(device_id);
+                for (int i = 0; i < mJoysticks.size(); i++) {
+                    if (mJoysticks.get(i).device_id == device_id) {
+                        mJoysticks.remove(i);
+                        break;
+                    }
+                }
+            }
+        }
+    }
+
+    protected SDLJoystick getJoystick(int device_id) {
+        for (SDLJoystick joystick : mJoysticks) {
+            if (joystick.device_id == device_id) {
+                return joystick;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Handles given MotionEvent.
+     * @param event the event to be handled.
+     * @return if given event was processed.
+     */
+    boolean handleMotionEvent(MotionEvent event) {
+        int actionPointerIndex = event.getActionIndex();
+        int action = event.getActionMasked();
+        if (action == MotionEvent.ACTION_MOVE) {
+            SDLJoystick joystick = getJoystick(event.getDeviceId());
+            if (joystick != null) {
+                for (int i = 0; i < joystick.axes.size(); i++) {
+                    InputDevice.MotionRange range = joystick.axes.get(i);
+                    /* Normalize the value to -1...1 */
+                    float value = (event.getAxisValue(range.getAxis(), actionPointerIndex) - range.getMin()) / range.getRange() * 2.0f - 1.0f;
+                    SDLControllerManager.onNativeJoy(joystick.device_id, i, value);
+                }
+                for (int i = 0; i < joystick.hats.size() / 2; i++) {
+                    int hatX = Math.round(event.getAxisValue(joystick.hats.get(2 * i).getAxis(), actionPointerIndex));
+                    int hatY = Math.round(event.getAxisValue(joystick.hats.get(2 * i + 1).getAxis(), actionPointerIndex));
+                    SDLControllerManager.onNativeHat(joystick.device_id, i, hatX, hatY);
+                }
+            }
+        }
+        return true;
+    }
+
+    String getJoystickDescriptor(InputDevice joystickDevice) {
+        String desc = joystickDevice.getDescriptor();
+
+        if (desc != null && !desc.isEmpty()) {
+            return desc;
+        }
+
+        return joystickDevice.getName();
+    }
+
+    int getProductId(InputDevice joystickDevice) {
+        return joystickDevice.getProductId();
+    }
+
+    int getVendorId(InputDevice joystickDevice) {
+        return joystickDevice.getVendorId();
+    }
+
+    int getAxisMask(List<InputDevice.MotionRange> ranges) {
+        // For compatibility, keep computing the axis mask like before,
+        // only really distinguishing 2, 4 and 6 axes.
+        int axis_mask = 0;
+        if (ranges.size() >= 2) {
+            // ((1 << SDL_GAMEPAD_AXIS_LEFTX) | (1 << SDL_GAMEPAD_AXIS_LEFTY))
+            axis_mask |= 0x0003;
+        }
+        if (ranges.size() >= 4) {
+            // ((1 << SDL_GAMEPAD_AXIS_RIGHTX) | (1 << SDL_GAMEPAD_AXIS_RIGHTY))
+            axis_mask |= 0x000c;
+        }
+        if (ranges.size() >= 6) {
+            // ((1 << SDL_GAMEPAD_AXIS_LEFT_TRIGGER) | (1 << SDL_GAMEPAD_AXIS_RIGHT_TRIGGER))
+            axis_mask |= 0x0030;
+        }
+        // Also add an indicator bit for whether the sorting order has changed.
+        // This serves to disable outdated gamecontrollerdb.txt mappings.
+        boolean have_z = false;
+        boolean have_past_z_before_rz = false;
+        for (InputDevice.MotionRange range : ranges) {
+            int axis = range.getAxis();
+            if (axis == MotionEvent.AXIS_Z) {
+                have_z = true;
+            } else if (axis > MotionEvent.AXIS_Z && axis < MotionEvent.AXIS_RZ) {
+                have_past_z_before_rz = true;
+            }
+        }
+        if (have_z && have_past_z_before_rz) {
+            // If both these exist, the compare() function changed sorting order.
+            // Set a bit to indicate this fact.
+            axis_mask |= 0x8000;
+        }
+        return axis_mask;
+    }
+
+    int getButtonMask(InputDevice joystickDevice) {
+        int button_mask = 0;
+        int[] keys = new int[] {
+            KeyEvent.KEYCODE_BUTTON_A,
+            KeyEvent.KEYCODE_BUTTON_B,
+            KeyEvent.KEYCODE_BUTTON_X,
+            KeyEvent.KEYCODE_BUTTON_Y,
+            KeyEvent.KEYCODE_BACK,
+            KeyEvent.KEYCODE_MENU,
+            KeyEvent.KEYCODE_BUTTON_MODE,
+            KeyEvent.KEYCODE_BUTTON_START,
+            KeyEvent.KEYCODE_BUTTON_THUMBL,
+            KeyEvent.KEYCODE_BUTTON_THUMBR,
+            KeyEvent.KEYCODE_BUTTON_L1,
+            KeyEvent.KEYCODE_BUTTON_R1,
+            KeyEvent.KEYCODE_DPAD_UP,
+            KeyEvent.KEYCODE_DPAD_DOWN,
+            KeyEvent.KEYCODE_DPAD_LEFT,
+            KeyEvent.KEYCODE_DPAD_RIGHT,
+            KeyEvent.KEYCODE_BUTTON_SELECT,
+            KeyEvent.KEYCODE_DPAD_CENTER,
+
+            // These don't map into any SDL controller buttons directly
+            KeyEvent.KEYCODE_BUTTON_L2,
+            KeyEvent.KEYCODE_BUTTON_R2,
+            KeyEvent.KEYCODE_BUTTON_C,
+            KeyEvent.KEYCODE_BUTTON_Z,
+            KeyEvent.KEYCODE_BUTTON_1,
+            KeyEvent.KEYCODE_BUTTON_2,
+            KeyEvent.KEYCODE_BUTTON_3,
+            KeyEvent.KEYCODE_BUTTON_4,
+            KeyEvent.KEYCODE_BUTTON_5,
+            KeyEvent.KEYCODE_BUTTON_6,
+            KeyEvent.KEYCODE_BUTTON_7,
+            KeyEvent.KEYCODE_BUTTON_8,
+            KeyEvent.KEYCODE_BUTTON_9,
+            KeyEvent.KEYCODE_BUTTON_10,
+            KeyEvent.KEYCODE_BUTTON_11,
+            KeyEvent.KEYCODE_BUTTON_12,
+            KeyEvent.KEYCODE_BUTTON_13,
+            KeyEvent.KEYCODE_BUTTON_14,
+            KeyEvent.KEYCODE_BUTTON_15,
+            KeyEvent.KEYCODE_BUTTON_16,
+        };
+        int[] masks = new int[] {
+            (1 << 0),   // A -> A
+            (1 << 1),   // B -> B
+            (1 << 2),   // X -> X
+            (1 << 3),   // Y -> Y
+            (1 << 4),   // BACK -> BACK
+            (1 << 6),   // MENU -> START
+            (1 << 5),   // MODE -> GUIDE
+            (1 << 6),   // START -> START
+            (1 << 7),   // THUMBL -> LEFTSTICK
+            (1 << 8),   // THUMBR -> RIGHTSTICK
+            (1 << 9),   // L1 -> LEFTSHOULDER
+            (1 << 10),  // R1 -> RIGHTSHOULDER
+            (1 << 11),  // DPAD_UP -> DPAD_UP
+            (1 << 12),  // DPAD_DOWN -> DPAD_DOWN
+            (1 << 13),  // DPAD_LEFT -> DPAD_LEFT
+            (1 << 14),  // DPAD_RIGHT -> DPAD_RIGHT
+            (1 << 4),   // SELECT -> BACK
+            (1 << 0),   // DPAD_CENTER -> A
+            (1 << 15),  // L2 -> ??
+            (1 << 16),  // R2 -> ??
+            (1 << 17),  // C -> ??
+            (1 << 18),  // Z -> ??
+            (1 << 20),  // 1 -> ??
+            (1 << 21),  // 2 -> ??
+            (1 << 22),  // 3 -> ??
+            (1 << 23),  // 4 -> ??
+            (1 << 24),  // 5 -> ??
+            (1 << 25),  // 6 -> ??
+            (1 << 26),  // 7 -> ??
+            (1 << 27),  // 8 -> ??
+            (1 << 28),  // 9 -> ??
+            (1 << 29),  // 10 -> ??
+            (1 << 30),  // 11 -> ??
+            (1 << 31),  // 12 -> ??
+            // We're out of room...
+            0xFFFFFFFF,  // 13 -> ??
+            0xFFFFFFFF,  // 14 -> ??
+            0xFFFFFFFF,  // 15 -> ??
+            0xFFFFFFFF,  // 16 -> ??
+        };
+        boolean[] has_keys = joystickDevice.hasKeys(keys);
+        for (int i = 0; i < keys.length; ++i) {
+            if (has_keys[i]) {
+                button_mask |= masks[i];
+            }
+        }
+        return button_mask;
+    }
+}
+
+class SDLHapticHandler_API31 extends SDLHapticHandler {
+    @Override
+    void run(int device_id, float intensity, int length) {
+        SDLHaptic haptic = getHaptic(device_id);
+        if (haptic != null) {
+            vibrate(haptic.vib, intensity, length);
+        }
+    }
+
+    @Override
+    void rumble(int device_id, float low_frequency_intensity, float high_frequency_intensity, int length) {
+        InputDevice device = InputDevice.getDevice(device_id);
+        if (device == null) {
+            return;
+        }
+
+        if (Build.VERSION.SDK_INT < 31 /* Android 12.0 (S) */) {
+            /* Silence 'lint' warning */
+            return;
+        }
+
+        VibratorManager manager = device.getVibratorManager();
+        int[] vibrators = manager.getVibratorIds();
+        if (vibrators.length >= 2) {
+            vibrate(manager.getVibrator(vibrators[0]), low_frequency_intensity, length);
+            vibrate(manager.getVibrator(vibrators[1]), high_frequency_intensity, length);
+        } else if (vibrators.length == 1) {
+            float intensity = (low_frequency_intensity * 0.6f) + (high_frequency_intensity * 0.4f);
+            vibrate(manager.getVibrator(vibrators[0]), intensity, length);
+        }
+    }
+
+    private void vibrate(Vibrator vibrator, float intensity, int length) {
+
+        if (Build.VERSION.SDK_INT < 31 /* Android 12.0 (S) */) {
+            /* Silence 'lint' warning */
+            return;
+        }
+
+        if (intensity == 0.0f) {
+            vibrator.cancel();
+            return;
+        }
+
+        int value = Math.round(intensity * 255);
+        if (value > 255) {
+            value = 255;
+        }
+        if (value < 1) {
+            vibrator.cancel();
+            return;
+        }
+        try {
+            vibrator.vibrate(VibrationEffect.createOneShot(length, value));
+        }
+        catch (Exception e) {
+            // Fall back to the generic method, which uses DEFAULT_AMPLITUDE, but works even if
+            // something went horribly wrong with the Android 8.0 APIs.
+            vibrator.vibrate(length);
+        }
+    }
+}
+
+class SDLHapticHandler_API26 extends SDLHapticHandler {
+    @Override
+    void run(int device_id, float intensity, int length) {
+
+        if (Build.VERSION.SDK_INT < 26 /* Android 8.0 (O) */) {
+            /* Silence 'lint' warning */
+            return;
+        }
+
+        SDLHaptic haptic = getHaptic(device_id);
+        if (haptic != null) {
+            if (intensity == 0.0f) {
+                stop(device_id);
+                return;
+            }
+
+            int vibeValue = Math.round(intensity * 255);
+
+            if (vibeValue > 255) {
+                vibeValue = 255;
+            }
+            if (vibeValue < 1) {
+                stop(device_id);
+                return;
+            }
+            try {
+                haptic.vib.vibrate(VibrationEffect.createOneShot(length, vibeValue));
+            }
+            catch (Exception e) {
+                // Fall back to the generic method, which uses DEFAULT_AMPLITUDE, but works even if
+                // something went horribly wrong with the Android 8.0 APIs.
+                haptic.vib.vibrate(length);
+            }
+        }
+    }
+}
+
+class SDLHapticHandler {
+
+    static class SDLHaptic {
+        int device_id;
+        String name;
+        Vibrator vib;
+    }
+
+    private final ArrayList<SDLHaptic> mHaptics;
+
+    SDLHapticHandler() {
+        mHaptics = new ArrayList<SDLHaptic>();
+    }
+
+    void run(int device_id, float intensity, int length) {
+        SDLHaptic haptic = getHaptic(device_id);
+        if (haptic != null) {
+            haptic.vib.vibrate(length);
+        }
+    }
+
+    void rumble(int device_id, float low_frequency_intensity, float high_frequency_intensity, int length) {
+        // Not supported in older APIs
+    }
+
+    void stop(int device_id) {
+        SDLHaptic haptic = getHaptic(device_id);
+        if (haptic != null) {
+            haptic.vib.cancel();
+        }
+    }
+
+    void pollHapticDevices() {
+
+        final int deviceId_VIBRATOR_SERVICE = 999999;
+        boolean hasVibratorService = false;
+
+        /* Check VIBRATOR_SERVICE */
+        Vibrator vib = (Vibrator) SDL.getContext().getSystemService(Context.VIBRATOR_SERVICE);
+        if (vib != null) {
+            hasVibratorService = vib.hasVibrator();
+
+            if (hasVibratorService) {
+                SDLHaptic haptic = getHaptic(deviceId_VIBRATOR_SERVICE);
+                if (haptic == null) {
+                    haptic = new SDLHaptic();
+                    haptic.device_id = deviceId_VIBRATOR_SERVICE;
+                    haptic.name = "VIBRATOR_SERVICE";
+                    haptic.vib = vib;
+                    mHaptics.add(haptic);
+                    SDLControllerManager.nativeAddHaptic(haptic.device_id, haptic.name);
+                }
+            }
+        }
+
+        /* Check removed devices */
+        ArrayList<Integer> removedDevices = null;
+        for (SDLHaptic haptic : mHaptics) {
+            int device_id = haptic.device_id;
+            if (device_id != deviceId_VIBRATOR_SERVICE || !hasVibratorService) {
+                if (removedDevices == null) {
+                    removedDevices = new ArrayList<Integer>();
+                }
+                removedDevices.add(device_id);
+            }  // else: don't remove the vibrator if it is still present
+        }
+
+        if (removedDevices != null) {
+            for (int device_id : removedDevices) {
+                SDLControllerManager.nativeRemoveHaptic(device_id);
+                for (int i = 0; i < mHaptics.size(); i++) {
+                    if (mHaptics.get(i).device_id == device_id) {
+                        mHaptics.remove(i);
+                        break;
+                    }
+                }
+            }
+        }
+    }
+
+    protected SDLHaptic getHaptic(int device_id) {
+        for (SDLHaptic haptic : mHaptics) {
+            if (haptic.device_id == device_id) {
+                return haptic;
+            }
+        }
+        return null;
+    }
+}
+
+class SDLGenericMotionListener_API14 implements View.OnGenericMotionListener {
+    protected static final int SDL_PEN_DEVICE_TYPE_UNKNOWN = 0;
+    protected static final int SDL_PEN_DEVICE_TYPE_DIRECT = 1;
+    protected static final int SDL_PEN_DEVICE_TYPE_INDIRECT = 2;
+
+    // Generic Motion (mouse hover, joystick...) events go here
+    @Override
+    public boolean onGenericMotion(View v, MotionEvent event) {
+        if (event.getSource() == InputDevice.SOURCE_JOYSTICK)
+            return SDLControllerManager.handleJoystickMotionEvent(event);
+
+        float x, y;
+        int action = event.getActionMasked();
+        int pointerCount = event.getPointerCount();
+        boolean consumed = false;
+
+        for (int i = 0; i < pointerCount; i++) {
+            int toolType = event.getToolType(i);
+
+            if (toolType == MotionEvent.TOOL_TYPE_MOUSE) {
+                switch (action) {
+                    case MotionEvent.ACTION_SCROLL:
+                        x = event.getAxisValue(MotionEvent.AXIS_HSCROLL, i);
+                        y = event.getAxisValue(MotionEvent.AXIS_VSCROLL, i);
+                        SDLActivity.onNativeMouse(0, action, x, y, false);
+                        consumed = true;
+                        break;
+
+                    case MotionEvent.ACTION_HOVER_MOVE:
+                        x = getEventX(event, i);
+                        y = getEventY(event, i);
+
+                        SDLActivity.onNativeMouse(0, action, x, y, checkRelativeEvent(event));
+                        consumed = true;
+                        break;
+
+                    default:
+                        break;
+                }
+            } else if (toolType == MotionEvent.TOOL_TYPE_STYLUS || toolType == MotionEvent.TOOL_TYPE_ERASER) {
+                switch (action) {
+                    case MotionEvent.ACTION_HOVER_ENTER:
+                    case MotionEvent.ACTION_HOVER_MOVE:
+                    case MotionEvent.ACTION_HOVER_EXIT:
+                        x = event.getX(i);
+                        y = event.getY(i);
+                        float p = event.getPressure(i);
+                        if (p > 1.0f) {
+                            // may be larger than 1.0f on some devices
+                            // see the documentation of getPressure(i)
+                            p = 1.0f;
+                        }
+
+                        // BUTTON_STYLUS_PRIMARY is 2^5, so shift by 4, and apply SDL_PEN_INPUT_DOWN/SDL_PEN_INPUT_ERASER_TIP
+                        int buttons = (event.getButtonState() >> 4) | (1 << (toolType == MotionEvent.TOOL_TYPE_STYLUS ? 0 : 30));
+
+                        SDLActivity.onNativePen(event.getPointerId(i), getPenDeviceType(event.getDevice()), buttons, action, x, y, p);
+                        consumed = true;
+                        break;
+                }
+            }
+        }
+
+        return consumed;
+    }
+
+    boolean supportsRelativeMouse() {
+        return false;
+    }
+
+    boolean inRelativeMode() {
+        return false;
+    }
+
+    boolean setRelativeMouseEnabled(boolean enabled) {
+        return false;
+    }
+
+    void reclaimRelativeMouseModeIfNeeded() {
+
+    }
+
+    boolean checkRelativeEvent(MotionEvent event) {
+        return inRelativeMode();
+    }
+
+    float getEventX(MotionEvent event, int pointerIndex) {
+        return event.getX(pointerIndex);
+    }
+
+    float getEventY(MotionEvent event, int pointerIndex) {
+        return event.getY(pointerIndex);
+    }
+
+    int getPenDeviceType(InputDevice penDevice) {
+        return SDL_PEN_DEVICE_TYPE_UNKNOWN;
+    }
+}
+
+class SDLGenericMotionListener_API24 extends SDLGenericMotionListener_API14 {
+    // Generic Motion (mouse hover, joystick...) events go here
+
+    private boolean mRelativeModeEnabled;
+
+    @Override
+    boolean supportsRelativeMouse() {
+        return true;
+    }
+
+    @Override
+    boolean inRelativeMode() {
+        return mRelativeModeEnabled;
+    }
+
+    @Override
+    boolean setRelativeMouseEnabled(boolean enabled) {
+        mRelativeModeEnabled = enabled;
+        return true;
+    }
+
+    @Override
+    float getEventX(MotionEvent event, int pointerIndex) {
+        if (Build.VERSION.SDK_INT < 24 /* Android 7.0 (N) */) {
+            /* Silence 'lint' warning */
+            return 0;
+        }
+
+        if (mRelativeModeEnabled && event.getToolType(pointerIndex) == MotionEvent.TOOL_TYPE_MOUSE) {
+            return event.getAxisValue(MotionEvent.AXIS_RELATIVE_X, pointerIndex);
+        } else {
+            return event.getX(pointerIndex);
+        }
+    }
+
+    @Override
+    float getEventY(MotionEvent event, int pointerIndex) {
+        if (Build.VERSION.SDK_INT < 24 /* Android 7.0 (N) */) {
+            /* Silence 'lint' warning */
+            return 0;
+        }
+
+        if (mRelativeModeEnabled && event.getToolType(pointerIndex) == MotionEvent.TOOL_TYPE_MOUSE) {
+            return event.getAxisValue(MotionEvent.AXIS_RELATIVE_Y, pointerIndex);
+        } else {
+            return event.getY(pointerIndex);
+        }
+    }
+}
+
+class SDLGenericMotionListener_API26 extends SDLGenericMotionListener_API24 {
+    // Generic Motion (mouse hover, joystick...) events go here
+    private boolean mRelativeModeEnabled;
+
+    @Override
+    boolean supportsRelativeMouse() {
+        return (!SDLActivity.isDeXMode() || Build.VERSION.SDK_INT >= 27 /* Android 8.1 (O_MR1) */);
+    }
+
+    @Override
+    boolean inRelativeMode() {
+        return mRelativeModeEnabled;
+    }
+
+    @Override
+    boolean setRelativeMouseEnabled(boolean enabled) {
+
+        if (Build.VERSION.SDK_INT < 26 /* Android 8.0 (O) */) {
+            /* Silence 'lint' warning */
+            return false;
+        }
+
+        if (!SDLActivity.isDeXMode() || Build.VERSION.SDK_INT >= 27 /* Android 8.1 (O_MR1) */) {
+            if (enabled) {
+                SDLActivity.getContentView().requestPointerCapture();
+            } else {
+                SDLActivity.getContentView().releasePointerCapture();
+            }
+            mRelativeModeEnabled = enabled;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    @Override
+    void reclaimRelativeMouseModeIfNeeded() {
+
+        if (Build.VERSION.SDK_INT < 26 /* Android 8.0 (O) */) {
+            /* Silence 'lint' warning */
+            return;
+        }
+
+        if (mRelativeModeEnabled && !SDLActivity.isDeXMode()) {
+            SDLActivity.getContentView().requestPointerCapture();
+        }
+    }
+
+    @Override
+    boolean checkRelativeEvent(MotionEvent event) {
+        if (Build.VERSION.SDK_INT < 26 /* Android 8.0 (O) */) {
+            /* Silence 'lint' warning */
+            return false;
+        }
+        return event.getSource() == InputDevice.SOURCE_MOUSE_RELATIVE;
+    }
+
+    @Override
+    float getEventX(MotionEvent event, int pointerIndex) {
+        // Relative mouse in capture mode will only have relative for X/Y
+        return event.getX(pointerIndex);
+    }
+
+    @Override
+    float getEventY(MotionEvent event, int pointerIndex) {
+        // Relative mouse in capture mode will only have relative for X/Y
+        return event.getY(pointerIndex);
+    }
+}
+
+class SDLGenericMotionListener_API29 extends SDLGenericMotionListener_API26 {
+    @Override
+    int getPenDeviceType(InputDevice penDevice)
+    {
+        if (penDevice == null) {
+            return SDL_PEN_DEVICE_TYPE_UNKNOWN;
+        }
+
+        return penDevice.isExternal() ? SDL_PEN_DEVICE_TYPE_INDIRECT : SDL_PEN_DEVICE_TYPE_DIRECT;
+    }
+}
--- a/Android/AndroidProject/app/src/main/java/org/libsdl/app/SDLDummyEdit.java
+++ b/Android/AndroidProject/app/src/main/java/org/libsdl/app/SDLDummyEdit.java
@ -0,0 +1,66 @@
+package org.libsdl.app;
+
+import android.content.*;
+import android.text.InputType;
+import android.view.*;
+import android.view.inputmethod.EditorInfo;
+import android.view.inputmethod.InputConnection;
+
+/* This is a fake invisible editor view that receives the input and defines the
+ * pan&scan region
+ */
+public class SDLDummyEdit extends View implements View.OnKeyListener
+{
+    InputConnection ic;
+    int input_type;
+
+    SDLDummyEdit(Context context) {
+        super(context);
+        setFocusableInTouchMode(true);
+        setFocusable(true);
+        setOnKeyListener(this);
+    }
+
+    void setInputType(int input_type) {
+        this.input_type = input_type;
+    }
+
+    @Override
+    public boolean onCheckIsTextEditor() {
+        return true;
+    }
+
+    @Override
+    public boolean onKey(View v, int keyCode, KeyEvent event) {
+        return SDLActivity.handleKeyEvent(v, keyCode, event, ic);
+    }
+
+    //
+    @Override
+    public boolean onKeyPreIme (int keyCode, KeyEvent event) {
+        // As seen on StackOverflow: http://stackoverflow.com/questions/7634346/keyboard-hide-event
+        // FIXME: Discussion at http://bugzilla.libsdl.org/show_bug.cgi?id=1639
+        // FIXME: This is not a 100% effective solution to the problem of detecting if the keyboard is showing or not
+        // FIXME: A more effective solution would be to assume our Layout to be RelativeLayout or LinearLayout
+        // FIXME: And determine the keyboard presence doing this: http://stackoverflow.com/questions/2150078/how-to-check-visibility-of-software-keyboard-in-android
+        // FIXME: An even more effective way would be if Android provided this out of the box, but where would the fun be in that :)
+        if (event.getAction()==KeyEvent.ACTION_UP && keyCode == KeyEvent.KEYCODE_BACK) {
+            if (SDLActivity.mTextEdit != null && SDLActivity.mTextEdit.getVisibility() == View.VISIBLE) {
+                SDLActivity.onNativeKeyboardFocusLost();
+            }
+        }
+        return super.onKeyPreIme(keyCode, event);
+    }
+
+    @Override
+    public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
+        ic = new SDLInputConnection(this, true);
+
+        outAttrs.inputType = input_type;
+        outAttrs.imeOptions = EditorInfo.IME_FLAG_NO_EXTRACT_UI |
+                              EditorInfo.IME_FLAG_NO_FULLSCREEN /* API 11 */;
+
+        return ic;
+    }
+}
+
--- a/Android/AndroidProject/app/src/main/java/org/libsdl/app/SDLInputConnection.java
+++ b/Android/AndroidProject/app/src/main/java/org/libsdl/app/SDLInputConnection.java
@ -0,0 +1,138 @@
+package org.libsdl.app;
+
+import android.content.*;
+import android.os.Build;
+import android.text.Editable;
+import android.view.*;
+import android.view.inputmethod.BaseInputConnection;
+import android.widget.EditText;
+
+class SDLInputConnection extends BaseInputConnection
+{
+    protected EditText mEditText;
+    protected String mCommittedText = "";
+
+    SDLInputConnection(View targetView, boolean fullEditor) {
+        super(targetView, fullEditor);
+        mEditText = new EditText(SDL.getContext());
+    }
+
+    @Override
+    public Editable getEditable() {
+        return mEditText.getEditableText();
+    }
+
+    @Override
+    public boolean sendKeyEvent(KeyEvent event) {
+        /*
+         * This used to handle the keycodes from soft keyboard (and IME-translated input from hardkeyboard)
+         * However, as of Ice Cream Sandwich and later, almost all soft keyboard doesn't generate key presses
+         * and so we need to generate them ourselves in commitText.  To avoid duplicates on the handful of keys
+         * that still do, we empty this out.
+         */
+
+        /*
+         * Return DOES still generate a key event, however.  So rather than using it as the 'click a button' key
+         * as we do with physical keyboards, let's just use it to hide the keyboard.
+         */
+
+        if (event.getKeyCode() == KeyEvent.KEYCODE_ENTER) {
+            if (SDLActivity.onNativeSoftReturnKey()) {
+                return true;
+            }
+        }
+
+        return super.sendKeyEvent(event);
+    }
+
+    @Override
+    public boolean commitText(CharSequence text, int newCursorPosition) {
+        if (!super.commitText(text, newCursorPosition)) {
+            return false;
+        }
+        updateText();
+        return true;
+    }
+
+    @Override
+    public boolean setComposingText(CharSequence text, int newCursorPosition) {
+        if (!super.setComposingText(text, newCursorPosition)) {
+            return false;
+        }
+        updateText();
+        return true;
+    }
+
+    @Override
+    public boolean deleteSurroundingText(int beforeLength, int afterLength) {
+        if (Build.VERSION.SDK_INT <= 29 /* Android 10.0 (Q) */) {
+            // Workaround to capture backspace key. Ref: http://stackoverflow.com/questions>/14560344/android-backspace-in-webview-baseinputconnection
+            // and https://bugzilla.libsdl.org/show_bug.cgi?id=2265
+            if (beforeLength > 0 && afterLength == 0) {
+                // backspace(s)
+                while (beforeLength-- > 0) {
+                    nativeGenerateScancodeForUnichar('\b');
+                }
+                return true;
+           }
+        }
+
+        if (!super.deleteSurroundingText(beforeLength, afterLength)) {
+            return false;
+        }
+        updateText();
+        return true;
+    }
+
+    protected void updateText() {
+        final Editable content = getEditable();
+        if (content == null) {
+            return;
+        }
+
+        String text = content.toString();
+        int compareLength = Math.min(text.length(), mCommittedText.length());
+        int matchLength, offset;
+
+        /* Backspace over characters that are no longer in the string */
+        for (matchLength = 0; matchLength < compareLength; ) {
+            int codePoint = mCommittedText.codePointAt(matchLength);
+            if (codePoint != text.codePointAt(matchLength)) {
+                break;
+            }
+            matchLength += Character.charCount(codePoint);
+        }
+        /* FIXME: This doesn't handle graphemes, like '🌬️' */
+        for (offset = matchLength; offset < mCommittedText.length(); ) {
+            int codePoint = mCommittedText.codePointAt(offset);
+            nativeGenerateScancodeForUnichar('\b');
+            offset += Character.charCount(codePoint);
+        }
+
+        if (matchLength < text.length()) {
+            String pendingText = text.subSequence(matchLength, text.length()).toString();
+            if (!SDLActivity.dispatchingKeyEvent()) {
+                for (offset = 0; offset < pendingText.length(); ) {
+                    int codePoint = pendingText.codePointAt(offset);
+                    if (codePoint == '\n') {
+                        if (SDLActivity.onNativeSoftReturnKey()) {
+                            return;
+                        }
+                    }
+                    /* Higher code points don't generate simulated scancodes */
+                    if (codePoint > 0 && codePoint < 128) {
+                        nativeGenerateScancodeForUnichar((char)codePoint);
+                    }
+                    offset += Character.charCount(codePoint);
+                }
+            }
+            SDLInputConnection.nativeCommitText(pendingText, 0);
+        }
+        mCommittedText = text;
+    }
+
+    public static native void nativeCommitText(String text, int newCursorPosition);
+
+    public static native void nativeGenerateScancodeForUnichar(char c);
+}
+
--- a/Android/AndroidProject/app/src/main/java/org/libsdl/app/SDLSurface.java
+++ b/Android/AndroidProject/app/src/main/java/org/libsdl/app/SDLSurface.java
@ -0,0 +1,446 @@
+package org.libsdl.app;
+
+
+import android.content.Context;
+import android.content.pm.ActivityInfo;
+import android.graphics.Insets;
+import android.hardware.Sensor;
+import android.hardware.SensorEvent;
+import android.hardware.SensorEventListener;
+import android.hardware.SensorManager;
+import android.os.Build;
+import android.util.DisplayMetrics;
+import android.util.Log;
+import android.view.Display;
+import android.view.InputDevice;
+import android.view.KeyEvent;
+import android.view.MotionEvent;
+import android.view.PointerIcon;
+import android.view.Surface;
+import android.view.SurfaceHolder;
+import android.view.SurfaceView;
+import android.view.View;
+import android.view.WindowInsets;
+import android.view.WindowManager;
+
+import android.view.ScaleGestureDetector;
+
+/**
+    SDLSurface. This is what we draw on, so we need to know when it's created
+    in order to do anything useful.
+
+    Because of this, that's where we set up the SDL thread
+*/
+public class SDLSurface extends SurfaceView implements SurfaceHolder.Callback,
+    View.OnApplyWindowInsetsListener, View.OnKeyListener, View.OnTouchListener,
+    SensorEventListener, ScaleGestureDetector.OnScaleGestureListener {
+
+    // Sensors
+    protected SensorManager mSensorManager;
+    protected Display mDisplay;
+
+    // Keep track of the surface size to normalize touch events
+    protected float mWidth, mHeight;
+
+    // Is SurfaceView ready for rendering
+    protected boolean mIsSurfaceReady;
+
+    // Pinch events
+    private final ScaleGestureDetector scaleGestureDetector;
+
+    // Startup
+    protected SDLSurface(Context context) {
+        super(context);
+        getHolder().addCallback(this);
+
+        scaleGestureDetector = new ScaleGestureDetector(context, this);
+
+        setFocusable(true);
+        setFocusableInTouchMode(true);
+        requestFocus();
+        setOnApplyWindowInsetsListener(this);
+        setOnKeyListener(this);
+        setOnTouchListener(this);
+
+        mDisplay = ((WindowManager)context.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
+        mSensorManager = (SensorManager)context.getSystemService(Context.SENSOR_SERVICE);
+
+        setOnGenericMotionListener(SDLActivity.getMotionListener());
+
+        // Some arbitrary defaults to avoid a potential division by zero
+        mWidth = 1.0f;
+        mHeight = 1.0f;
+
+        mIsSurfaceReady = false;
+    }
+
+    protected void handlePause() {
+        enableSensor(Sensor.TYPE_ACCELEROMETER, false);
+    }
+
+    protected void handleResume() {
+        setFocusable(true);
+        setFocusableInTouchMode(true);
+        requestFocus();
+        setOnApplyWindowInsetsListener(this);
+        setOnKeyListener(this);
+        setOnTouchListener(this);
+        enableSensor(Sensor.TYPE_ACCELEROMETER, true);
+    }
+
+    protected Surface getNativeSurface() {
+        return getHolder().getSurface();
+    }
+
+    // Called when we have a valid drawing surface
+    @Override
+    public void surfaceCreated(SurfaceHolder holder) {
+        Log.v("SDL", "surfaceCreated()");
+        SDLActivity.onNativeSurfaceCreated();
+    }
+
+    // Called when we lose the surface
+    @Override
+    public void surfaceDestroyed(SurfaceHolder holder) {
+        Log.v("SDL", "surfaceDestroyed()");
+
+        // Transition to pause, if needed
+        SDLActivity.mNextNativeState = SDLActivity.NativeState.PAUSED;
+        SDLActivity.handleNativeState();
+
+        mIsSurfaceReady = false;
+        SDLActivity.onNativeSurfaceDestroyed();
+    }
+
+    // Called when the surface is resized
+    @Override
+    public void surfaceChanged(SurfaceHolder holder,
+                               int format, int width, int height) {
+        Log.v("SDL", "surfaceChanged()");
+
+        if (SDLActivity.mSingleton == null) {
+            return;
+        }
+
+        mWidth = width;
+        mHeight = height;
+        int nDeviceWidth = width;
+        int nDeviceHeight = height;
+        float density = 1.0f;
+        try
+        {
+            DisplayMetrics realMetrics = new DisplayMetrics();
+            mDisplay.getRealMetrics( realMetrics );
+            nDeviceWidth = realMetrics.widthPixels;
+            nDeviceHeight = realMetrics.heightPixels;
+            // Use densityDpi instead of density to more closely match what the UI scale is
+            density = (float)realMetrics.densityDpi / 160.0f;
+        } catch(Exception ignored) {
+        }
+
+        synchronized(SDLActivity.getContext()) {
+            // In case we're waiting on a size change after going fullscreen, send a notification.
+            SDLActivity.getContext().notifyAll();
+        }
+
+        Log.v("SDL", "Window size: " + width + "x" + height);
+        Log.v("SDL", "Device size: " + nDeviceWidth + "x" + nDeviceHeight);
+        SDLActivity.nativeSetScreenResolution(width, height, nDeviceWidth, nDeviceHeight, density, mDisplay.getRefreshRate());
+        SDLActivity.onNativeResize();
+
+        // Prevent a screen distortion glitch,
+        // for instance when the device is in Landscape and a Portrait App is resumed.
+        boolean skip = false;
+        int requestedOrientation = SDLActivity.mSingleton.getRequestedOrientation();
+
+        if (requestedOrientation == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT || requestedOrientation == ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT) {
+            if (mWidth > mHeight) {
+               skip = true;
+            }
+        } else if (requestedOrientation == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE || requestedOrientation == ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE) {
+            if (mWidth < mHeight) {
+               skip = true;
+            }
+        }
+
+        // Special Patch for Square Resolution: Black Berry Passport
+        if (skip) {
+           double min = Math.min(mWidth, mHeight);
+           double max = Math.max(mWidth, mHeight);
+
+           if (max / min < 1.20) {
+              Log.v("SDL", "Don't skip on such aspect-ratio. Could be a square resolution.");
+              skip = false;
+           }
+        }
+
+        // Don't skip if we might be multi-window or have popup dialogs
+        if (skip) {
+            if (Build.VERSION.SDK_INT >= 24 /* Android 7.0 (N) */) {
+                skip = false;
+            }
+        }
+
+        if (skip) {
+           Log.v("SDL", "Skip .. Surface is not ready.");
+           mIsSurfaceReady = false;
+           return;
+        }
+
+        /* If the surface has been previously destroyed by onNativeSurfaceDestroyed, recreate it here */
+        SDLActivity.onNativeSurfaceChanged();
+
+        /* Surface is ready */
+        mIsSurfaceReady = true;
+
+        SDLActivity.mNextNativeState = SDLActivity.NativeState.RESUMED;
+        SDLActivity.handleNativeState();
+    }
+
+    // Window inset
+    @Override
+    public WindowInsets onApplyWindowInsets(View v, WindowInsets insets) {
+        if (Build.VERSION.SDK_INT >= 30 /* Android 11 (R) */) {
+            Insets combined = insets.getInsets(WindowInsets.Type.systemBars() |
+                                               WindowInsets.Type.systemGestures() |
+                                               WindowInsets.Type.mandatorySystemGestures() |
+                                               WindowInsets.Type.tappableElement() |
+                                               WindowInsets.Type.displayCutout());
+
+            SDLActivity.onNativeInsetsChanged(combined.left, combined.right, combined.top, combined.bottom);
+        }
+
+        // Pass these to any child views in case they need them
+        return insets;
+    }
+
+    // Key events
+    @Override
+    public boolean onKey(View v, int keyCode, KeyEvent event) {
+        return SDLActivity.handleKeyEvent(v, keyCode, event, null);
+    }
+
+    private float getNormalizedX(float x)
+    {
+        if (mWidth <= 1) {
+            return 0.5f;
+        } else {
+            return (x / (mWidth - 1));
+        }
+    }
+
+    private float getNormalizedY(float y)
+    {
+        if (mHeight <= 1) {
+            return 0.5f;
+        } else {
+            return (y / (mHeight - 1));
+        }
+    }
+
+    // Touch events
+    @Override
+    public boolean onTouch(View v, MotionEvent event) {
+        /* Ref: http://developer.android.com/training/gestures/multi.html */
+        int touchDevId = event.getDeviceId();
+        final int pointerCount = event.getPointerCount();
+        int action = event.getActionMasked();
+        int pointerId;
+        int i = 0;
+        float x,y,p;
+
+        if (action == MotionEvent.ACTION_POINTER_UP || action == MotionEvent.ACTION_POINTER_DOWN)
+            i = event.getActionIndex();
+
+        do {
+            int toolType = event.getToolType(i);
+
+            if (toolType == MotionEvent.TOOL_TYPE_MOUSE) {
+                int buttonState = event.getButtonState();
+                boolean relative = false;
+
+                // We need to check if we're in relative mouse mode and get the axis offset rather than the x/y values
+                // if we are. We'll leverage our existing mouse motion listener
+                SDLGenericMotionListener_API14 motionListener = SDLActivity.getMotionListener();
+                x = motionListener.getEventX(event, i);
+                y = motionListener.getEventY(event, i);
+                relative = motionListener.inRelativeMode();
+
+                SDLActivity.onNativeMouse(buttonState, action, x, y, relative);
+            } else if (toolType == MotionEvent.TOOL_TYPE_STYLUS || toolType == MotionEvent.TOOL_TYPE_ERASER) {
+                pointerId = event.getPointerId(i);
+                x = event.getX(i);
+                y = event.getY(i);
+                p = event.getPressure(i);
+                if (p > 1.0f) {
+                    // may be larger than 1.0f on some devices
+                    // see the documentation of getPressure(i)
+                    p = 1.0f;
+                }
+
+                // BUTTON_STYLUS_PRIMARY is 2^5, so shift by 4, and apply SDL_PEN_INPUT_DOWN/SDL_PEN_INPUT_ERASER_TIP
+                int buttonState = (event.getButtonState() >> 4) | (1 << (toolType == MotionEvent.TOOL_TYPE_STYLUS ? 0 : 30));
+
+                SDLActivity.onNativePen(pointerId, SDLActivity.getMotionListener().getPenDeviceType(event.getDevice()), buttonState, action, x, y, p);
+            } else { // MotionEvent.TOOL_TYPE_FINGER or MotionEvent.TOOL_TYPE_UNKNOWN
+                pointerId = event.getPointerId(i);
+                x = getNormalizedX(event.getX(i));
+                y = getNormalizedY(event.getY(i));
+                p = event.getPressure(i);
+                if (p > 1.0f) {
+                    // may be larger than 1.0f on some devices
+                    // see the documentation of getPressure(i)
+                    p = 1.0f;
+                }
+
+                SDLActivity.onNativeTouch(touchDevId, pointerId, action, x, y, p);
+            }
+
+            // Non-primary up/down
+            if (action == MotionEvent.ACTION_POINTER_UP || action == MotionEvent.ACTION_POINTER_DOWN)
+                break;
+        } while (++i < pointerCount);
+
+        scaleGestureDetector.onTouchEvent(event);
+
+        return true;
+    }
+
+    // Sensor events
+    protected void enableSensor(int sensortype, boolean enabled) {
+        // TODO: This uses getDefaultSensor - what if we have >1 accels?
+        if (enabled) {
+            mSensorManager.registerListener(this,
+                            mSensorManager.getDefaultSensor(sensortype),
+                            SensorManager.SENSOR_DELAY_GAME, null);
+        } else {
+            mSensorManager.unregisterListener(this,
+                            mSensorManager.getDefaultSensor(sensortype));
+        }
+    }
+
+    @Override
+    public void onAccuracyChanged(Sensor sensor, int accuracy) {
+        // TODO
+    }
+
+    @Override
+    public void onSensorChanged(SensorEvent event) {
+        if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {
+
+            // Since we may have an orientation set, we won't receive onConfigurationChanged events.
+            // We thus should check here.
+            int newRotation;
+
+            float x, y;
+            switch (mDisplay.getRotation()) {
+                case Surface.ROTATION_0:
+                default:
+                    x = event.values[0];
+                    y = event.values[1];
+                    newRotation = 0;
+                    break;
+                case Surface.ROTATION_90:
+                    x = -event.values[1];
+                    y = event.values[0];
+                    newRotation = 90;
+                    break;
+                case Surface.ROTATION_180:
+                    x = -event.values[0];
+                    y = -event.values[1];
+                    newRotation = 180;
+                    break;
+                case Surface.ROTATION_270:
+                    x = event.values[1];
+                    y = -event.values[0];
+                    newRotation = 270;
+                    break;
+            }
+
+            if (newRotation != SDLActivity.mCurrentRotation) {
+                SDLActivity.mCurrentRotation = newRotation;
+                SDLActivity.onNativeRotationChanged(newRotation);
+            }
+
+            SDLActivity.onNativeAccel(-x / SensorManager.GRAVITY_EARTH,
+                                      y / SensorManager.GRAVITY_EARTH,
+                                      event.values[2] / SensorManager.GRAVITY_EARTH);
+
+
+        }
+    }
+
+    // Prevent android internal NullPointerException (https://github.com/libsdl-org/SDL/issues/13306)
+    @Override
+    public PointerIcon onResolvePointerIcon(MotionEvent event, int pointerIndex) {
+        try {
+            return super.onResolvePointerIcon(event, pointerIndex);
+        } catch (NullPointerException e) {
+            return null;
+        }
+    }
+
+    // Captured pointer events for API 26.
+    @Override
+    public boolean onCapturedPointerEvent(MotionEvent event)
+    {
+        int action = event.getActionMasked();
+        int pointerCount = event.getPointerCount();
+
+        for (int i = 0; i < pointerCount; i++) {
+            float x, y;
+            switch (action) {
+                case MotionEvent.ACTION_SCROLL:
+                    x = event.getAxisValue(MotionEvent.AXIS_HSCROLL, i);
+                    y = event.getAxisValue(MotionEvent.AXIS_VSCROLL, i);
+                    SDLActivity.onNativeMouse(0, action, x, y, false);
+                    return true;
+
+                case MotionEvent.ACTION_HOVER_MOVE:
+                case MotionEvent.ACTION_MOVE:
+                    x = event.getX(i);
+                    y = event.getY(i);
+                    SDLActivity.onNativeMouse(0, action, x, y, true);
+                    return true;
+
+                case MotionEvent.ACTION_BUTTON_PRESS:
+                case MotionEvent.ACTION_BUTTON_RELEASE:
+
+                    // Change our action value to what SDL's code expects.
+                    if (action == MotionEvent.ACTION_BUTTON_PRESS) {
+                        action = MotionEvent.ACTION_DOWN;
+                    } else { /* MotionEvent.ACTION_BUTTON_RELEASE */
+                        action = MotionEvent.ACTION_UP;
+                    }
+
+                    x = event.getX(i);
+                    y = event.getY(i);
+                    int button = event.getButtonState();
+
+                    SDLActivity.onNativeMouse(button, action, x, y, true);
+                    return true;
+            }
+        }
+
+        return false;
+    }
+
+    @Override
+    public boolean onScale(ScaleGestureDetector detector) {
+        float scale = detector.getScaleFactor();
+        SDLActivity.onNativePinchUpdate(scale);
+        return true;
+    }
+
+    @Override
+    public boolean onScaleBegin(ScaleGestureDetector detector) {
+        SDLActivity.onNativePinchStart();
+        return true;
+    }
+
+    @Override
+    public void onScaleEnd(ScaleGestureDetector detector) {
+        SDLActivity.onNativePinchEnd();
+    }
+
+}
--- a/Android/AndroidProject/app/src/main/jniLibs/arm64-v8a/.gitkeep
+++ b/Android/AndroidProject/app/src/main/jniLibs/arm64-v8a/.gitkeep
--- a/Android/AndroidProject/app/src/main/jniLibs/x86_64/.gitkeep
+++ b/Android/AndroidProject/app/src/main/jniLibs/x86_64/.gitkeep
--- a/Android/AndroidProject/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
+++ b/Android/AndroidProject/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+</adaptive-icon>
--- a/Android/AndroidProject/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
+++ b/Android/AndroidProject/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+</adaptive-icon>
--- a/Android/AndroidProject/app/src/main/res/mipmap-hdpi/ic_launcher.webp
+++ b/Android/AndroidProject/app/src/main/res/mipmap-hdpi/ic_launcher.webp
--- a/Android/AndroidProject/app/src/main/res/mipmap-hdpi/ic_launcher_foreground.webp
+++ b/Android/AndroidProject/app/src/main/res/mipmap-hdpi/ic_launcher_foreground.webp
--- a/Android/AndroidProject/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp
+++ b/Android/AndroidProject/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp
--- a/Android/AndroidProject/app/src/main/res/mipmap-mdpi/ic_launcher.webp
+++ b/Android/AndroidProject/app/src/main/res/mipmap-mdpi/ic_launcher.webp
--- a/Android/AndroidProject/app/src/main/res/mipmap-mdpi/ic_launcher_foreground.webp
+++ b/Android/AndroidProject/app/src/main/res/mipmap-mdpi/ic_launcher_foreground.webp
--- a/Android/AndroidProject/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp
+++ b/Android/AndroidProject/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp
--- a/Android/AndroidProject/app/src/main/res/mipmap-xhdpi/ic_launcher.webp
+++ b/Android/AndroidProject/app/src/main/res/mipmap-xhdpi/ic_launcher.webp
--- a/Android/AndroidProject/app/src/main/res/mipmap-xhdpi/ic_launcher_foreground.webp
+++ b/Android/AndroidProject/app/src/main/res/mipmap-xhdpi/ic_launcher_foreground.webp
--- a/Android/AndroidProject/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp
+++ b/Android/AndroidProject/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp
--- a/Android/AndroidProject/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp
+++ b/Android/AndroidProject/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp
--- a/Android/AndroidProject/app/src/main/res/mipmap-xxhdpi/ic_launcher_foreground.webp
+++ b/Android/AndroidProject/app/src/main/res/mipmap-xxhdpi/ic_launcher_foreground.webp
--- a/Android/AndroidProject/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp
+++ b/Android/AndroidProject/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp
--- a/Android/AndroidProject/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp
+++ b/Android/AndroidProject/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp
--- a/Android/AndroidProject/app/src/main/res/mipmap-xxxhdpi/ic_launcher_foreground.webp
+++ b/Android/AndroidProject/app/src/main/res/mipmap-xxxhdpi/ic_launcher_foreground.webp
--- a/Android/AndroidProject/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp
+++ b/Android/AndroidProject/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp
--- a/Android/AndroidProject/app/src/main/res/values/colors.xml
+++ b/Android/AndroidProject/app/src/main/res/values/colors.xml
@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
--- a/Android/AndroidProject/app/src/main/res/values/ic_launcher_background.xml
+++ b/Android/AndroidProject/app/src/main/res/values/ic_launcher_background.xml
@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#000000</color>
+</resources>
--- a/Android/AndroidProject/app/src/main/res/values/strings.xml
+++ b/Android/AndroidProject/app/src/main/res/values/strings.xml
@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">IAEGame</string>
+</resources>
--- a/Android/AndroidProject/app/src/main/res/values/themes.xml
+++ b/Android/AndroidProject/app/src/main/res/values/themes.xml
@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <style name="Theme.IAEGame" parent="android:Theme.Material.Light.NoActionBar" />
+</resources>
--- a/Android/AndroidProject/app/src/main/res/xml/backup_rules.xml
+++ b/Android/AndroidProject/app/src/main/res/xml/backup_rules.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample backup rules file; uncomment and customize as necessary.
+   See https://developer.android.com/guide/topics/data/autobackup
+   for details.
+   Note: This file is ignored for devices older than API 31
+   See https://developer.android.com/about/versions/12/backup-restore
+-->
+<full-backup-content>
+    <!--
+   <include domain="sharedpref" path="."/>
+   <exclude domain="sharedpref" path="device.xml"/>
+-->
+</full-backup-content>
--- a/Android/AndroidProject/app/src/main/res/xml/data_extraction_rules.xml
+++ b/Android/AndroidProject/app/src/main/res/xml/data_extraction_rules.xml
@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample data extraction rules file; uncomment and customize as necessary.
+   See https://developer.android.com/about/versions/12/backup-restore#xml-changes
+   for details.
+-->
+<data-extraction-rules>
+    <cloud-backup>
+        <!-- TODO: Use <include> and <exclude> to control what is backed up.
+        <include .../>
+        <exclude .../>
+        -->
+    </cloud-backup>
+    <!--
+    <device-transfer>
+        <include .../>
+        <exclude .../>
+    </device-transfer>
+    -->
+</data-extraction-rules>
--- a/Android/AndroidProject/build.gradle.kts
+++ b/Android/AndroidProject/build.gradle.kts
@ -0,0 +1,6 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+plugins {
+    alias(libs.plugins.android.application) apply false
+    alias(libs.plugins.kotlin.android) apply false
+    alias(libs.plugins.kotlin.compose) apply false
+}
--- a/Android/AndroidProject/gradle.properties
+++ b/Android/AndroidProject/gradle.properties
@ -0,0 +1,23 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. For more details, visit
+# https://developer.android.com/r/tools/gradle-multi-project-decoupled-projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app's APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Kotlin code style for this project: "official" or "obsolete":
+kotlin.code.style=official
+# Enables namespacing of each library's R class so that its R class includes only the
+# resources declared in the library itself and none from the library's dependencies,
+# thereby reducing the size of the R class for that library
+android.nonTransitiveRClass=true
--- a/Android/AndroidProject/gradle/libs.versions.toml
+++ b/Android/AndroidProject/gradle/libs.versions.toml
@ -0,0 +1,32 @@
+[versions]
+agp = "8.13.0"
+kotlin = "2.0.21"
+coreKtx = "1.17.0"
+junit = "4.13.2"
+junitVersion = "1.3.0"
+espressoCore = "3.7.0"
+lifecycleRuntimeKtx = "2.9.4"
+activityCompose = "1.11.0"
+composeBom = "2024.09.00"
+
+[libraries]
+androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
+junit = { group = "junit", name = "junit", version.ref = "junit" }
+androidx-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
+androidx-espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
+androidx-lifecycle-runtime-ktx = { group = "androidx.lifecycle", name = "lifecycle-runtime-ktx", version.ref = "lifecycleRuntimeKtx" }
+androidx-activity-compose = { group = "androidx.activity", name = "activity-compose", version.ref = "activityCompose" }
+androidx-compose-bom = { group = "androidx.compose", name = "compose-bom", version.ref = "composeBom" }
+androidx-compose-ui = { group = "androidx.compose.ui", name = "ui" }
+androidx-compose-ui-graphics = { group = "androidx.compose.ui", name = "ui-graphics" }
+androidx-compose-ui-tooling = { group = "androidx.compose.ui", name = "ui-tooling" }
+androidx-compose-ui-tooling-preview = { group = "androidx.compose.ui", name = "ui-tooling-preview" }
+androidx-compose-ui-test-manifest = { group = "androidx.compose.ui", name = "ui-test-manifest" }
+androidx-compose-ui-test-junit4 = { group = "androidx.compose.ui", name = "ui-test-junit4" }
+androidx-compose-material3 = { group = "androidx.compose.material3", name = "material3" }
+
+[plugins]
+android-application = { id = "com.android.application", version.ref = "agp" }
+kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
+kotlin-compose = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }
+
--- a/Android/AndroidProject/gradle/wrapper/gradle-wrapper.jar
+++ b/Android/AndroidProject/gradle/wrapper/gradle-wrapper.jar
--- a/Android/AndroidProject/gradle/wrapper/gradle-wrapper.properties
+++ b/Android/AndroidProject/gradle/wrapper/gradle-wrapper.properties
@ -0,0 +1,6 @@
+#Fri Oct 17 23:05:59 IST 2025
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
--- a/Android/AndroidProject/gradlew
+++ b/Android/AndroidProject/gradlew
@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"
--- a/Android/AndroidProject/gradlew.bat
+++ b/Android/AndroidProject/gradlew.bat
@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
--- a/Android/AndroidProject/settings.gradle.kts
+++ b/Android/AndroidProject/settings.gradle.kts
@ -0,0 +1,23 @@
+pluginManagement {
+    repositories {
+        google {
+            content {
+                includeGroupByRegex("com\\.android.*")
+                includeGroupByRegex("com\\.google.*")
+                includeGroupByRegex("androidx.*")
+            }
+        }
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.name = "IAEGame"
+include(":app")
--- a/Android/android-ndk-r27d/CHANGELOG.md
+++ b/Android/android-ndk-r27d/CHANGELOG.md
@ -0,0 +1,150 @@
+# Changelog
+
+Report issues to [GitHub].
+
+For Android Studio issues, go to https://b.android.com and file a bug using the
+Android Studio component, not the NDK component.
+
+If you're a build system maintainer that needs to use the tools in the NDK
+directly, see the [build system maintainers guide].
+
+[GitHub]: https://github.com/android/ndk/issues
+[build system maintainers guide]: https://android.googlesource.com/platform/ndk/+/master/docs/BuildSystemMaintainers.md
+
+## Announcements
+
+* Android V will allow OEMs to ship arm64-v8a devices with 16KiB page sizes.
+  Devices that use this configuration will not be able to run existing apps that
+  use native code. To be compatible with these devices, applications will need
+  to rebuild all their native code to be 16KiB aligned, and rewrite any code
+  which assumes a specific page size. ndk-build and CMake have options to enable
+  this mode (see note about `APP_SUPPORT_FLEXIBLE_PAGE_SIZES` and
+  `ANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES` below). A future version of the NDK will
+  enable this mode by default. If you're using or maintaining a third-party
+  build system, consult the [build system maintainers guide] for instructions.
+
+  See [Support 16 KB page sizes] for more information.
+
+[Support 16 KB page sizes]: https://developer.android.com/guide/practices/page-sizes
+
+## r27d
+
+* Updated LLVM to clang-r522817d. See `clang_source_info.md` in the toolchain
+  directory for version information.
+  * [Issue 2144]: Fixed issue where `lldb.sh` did not work when installed to a
+    path which contained spaces.
+* [Issue 2143]: Fixed lldb.sh not finding libpython on macOS.
+
+[Issue 2143]: https://github.com/android/ndk/issues/2143
+[Issue 2144]: https://github.com/android/ndk/issues/2144
+
+## r27c
+
+* Updated LLVM to clang-r522817c. See `clang_source_info.md` in the toolchain
+  directory for version information.
+  * [Issue 2040]: Further fixes for miscompiles of indirect gotos.
+  * [Issue 2064]: Fix HWAsan miscompilation.
+  * [Issue 2070]: Fix crash in instantiation of function definitions.
+  * [Issue 2084]: Fix for incorrect compiler error on overloaded member
+    functions with ref-qualifiers.
+
+[Issue 2040]: https://github.com/android/ndk/issues/2040
+[Issue 2064]: https://github.com/android/ndk/issues/2064
+[Issue 2070]: https://github.com/android/ndk/issues/2070
+[Issue 2084]: https://github.com/android/ndk/issues/2084
+
+## r27b
+
+* Updated LLVM to clang-r522817b. See `clang_source_info.md` in the toolchain
+  directory for version information.
+  * [Issue 2040]: Fixed miscompile with indirect gotos.
+  * [Issue 2054]: Fixed crash in x86 fp16 instruction selection.
+  * [Issue 2059]: Fixed infinite loop in aarch64 vector instruction selection.
+* [Issue 2032]: Fixed compatibility issues with projects that used a very old
+  `cmake_minimum_required` version ("Policy CMP0057 is not set: Support new
+  IN_LIST if() operator").
+* [Issue 2039]: Fixed `LOCAL_STRIP_MODE` not being reset by
+  `include $(CLEAR_VARS)`.
+* [Issue 2049]: Restored metadata used by CMake in non-toolchain-file use cases
+  that used `CMAKE_SYSTEM_PROCESSOR` instead of `CMAKE_ANDROID_ARCH_ABI`. If you
+  ran into this problem, you should switch to using `CMAKE_ANDROID_ARCH_ABI`
+  because that's what [CMake's docs] say to use. Better still, use the NDK's
+  [toolchain file].
+
+[Issue 2032]: https://github.com/android/ndk/issues/2032
+[Issue 2039]: https://github.com/android/ndk/issues/2039
+[Issue 2040]: https://github.com/android/ndk/issues/2040
+[Issue 2049]: https://github.com/android/ndk/issues/2049
+[Issue 2054]: https://github.com/android/ndk/issues/2054
+[Issue 2059]: https://github.com/android/ndk/issues/2059
+[CMake's docs]: https://cmake.org/cmake/help/latest/manual/cmake-toolchains.7.html#cross-compiling-for-android-with-the-ndk
+[toolchain file]: https://developer.android.com/ndk/guides/cmake
+
+## Changes
+
+* Updated LLVM to clang-r522817. See `clang_source_info.md` in the toolchain
+  directory for version information.
+  * [Issue 1728]: Clang now emits an error for invalid Android target versions.
+  * [Issue 1853]: `clang-scan-deps` is now included.
+  * [Issue 1911]: Fixed inconsistent `std::regex_replace` results.
+  * [Issue 1947]: Improved support for AArch64 function multi-versioning in clang.
+  * [Issue 1963]: Fixed undefined behavior in `std::unexpected::has_value()`.
+  * [Issue 1988]: Added aarch64 support for `preserve_all` calling convention.
+  * [Issue 2007]: Fixed crash in class template argument deduction caused by
+    self-referential friend declaration.
+  * [Issue 2010]: Removed superfluous libraries to reduce disk use.
+  * [Issue 2012]: Fixed front end crash when using concepts and modules.
+  * [Issue 2013]: Fixed false positive ODR violation in global module fragments.
+  * [Issue 2023]: Fixed Clang crashes related to lambda captures in unevaluated
+    contexts.
+  * [Issue 2024]: Removed invalid `__attribute__((__const__))` from `gettid`.
+* A RISC-V sysroot (AKA riscv64, or rv64) has been added. It is **not**
+  supported. It is present to aid bringup for OS vendors, but it's not yet a
+  supported Android ABI. It will not be built by default.
+* [Issue 1856]: Target-prefixed cmd wrappers for clang should now behave
+  appropriately when the first argument includes quotes. **You probably do not
+  need to use those wrappers.** In most cases where you would use
+  `aarch64-linux-android21-clang`, you can instead use `clang -target
+  aarch64-linux-android21`, e.g. `CC="clang -target aarch64-linux-android21"
+  ./configure`. The wrappers are only needed when working with systems that do
+  not properly handle a `CC` that includes arguments.
+* [Issue 1898]: ndk-stack now tolerates 0x prefixed addresses.
+* [Issue 1921]: `ANDROID_USE_LEGACY_TOOLCHAIN_FILE` value is now preserved
+  during try-compile steps when `ON`.
+* [Issue 1974]: Unintentionally shipped Vulkan headers have been removed from
+  `sources/third_party/vulkan`. The standard Vulkan headers are included in the
+  Android sysroot, which Clang will find automatically.
+* [Issue 1993]: ndk-stack now tolerates invalid UTF-8 characters in the trace.
+* [Issue 1994]: Fixed ndk-gdb/ndk-lldb to use the correct path for
+  make and other tools.
+* Added `APP_SUPPORT_FLEXIBLE_PAGE_SIZES` for ndk-build and
+  `ANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES` for CMake. Set to
+  `APP_SUPPORT_FLEXIBLE_PAGE_SIZES := true` in your `Application.mk` or pass
+  `-DANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES=ON` to CMake (via
+  `android.defaultConfig.externalNativeBuild.cmake.arguments` if you're using
+  the Android Gradle Plugin) to build your code to be compatible with devices
+  that use a 16KiB page size. Third-party build system users and maintainers
+  should consult the [build system maintainers guide].
+* Symlinks are now properly preserved in the macOS App Bundle. The NDK installed
+  via that method is now the same size as the one installed via the SDK manager.
+* The unsupported libclang, libclang-cpp, libLLVM, and libLTO libraries were
+  removed to save space.
+
+[Issue 1728]: https://github.com/android/ndk/issues/1728
+[Issue 1853]: https://github.com/android/ndk/issues/1853
+[Issue 1856]: https://github.com/android/ndk/issues/1856
+[Issue 1898]: https://github.com/android/ndk/issues/1898
+[Issue 1911]: https://github.com/android/ndk/issues/1911
+[Issue 1921]: https://github.com/android/ndk/issues/1921
+[Issue 1947]: https://github.com/android/ndk/issues/1947
+[Issue 1963]: https://github.com/android/ndk/issues/1963
+[Issue 1974]: https://github.com/android/ndk/issues/1974
+[Issue 1988]: https://github.com/android/ndk/issues/1988
+[Issue 1993]: https://github.com/android/ndk/issues/1993
+[Issue 1994]: https://github.com/android/ndk/issues/1994
+[Issue 2007]: https://github.com/android/ndk/issues/2007
+[Issue 2010]: https://github.com/android/ndk/issues/2010
+[Issue 2012]: https://github.com/android/ndk/issues/2012
+[Issue 2013]: https://github.com/android/ndk/issues/2013
+[Issue 2023]: https://github.com/android/ndk/issues/2023
+[Issue 2024]: https://github.com/android/ndk/issues/2024
--- a/Android/android-ndk-r27d/NOTICE
+++ b/Android/android-ndk-r27d/NOTICE
--- a/Android/android-ndk-r27d/NOTICE.toolchain
+++ b/Android/android-ndk-r27d/NOTICE.toolchain
--- a/Android/android-ndk-r27d/README.md
+++ b/Android/android-ndk-r27d/README.md
@ -0,0 +1,24 @@
+Android NDK
+===========
+
+Documentation
+-------------
+
+NDK documentation, guides, and API reference are available on
+[our website](https://developer.android.com/ndk/index.html).
+
+NDK code samples are available on
+[GitHub](https://github.com/googlesamples/android-ndk).
+
+Information about Android Studio can be found on [the Android Studio
+website](https://developer.android.com/studio/index.html).
+
+Filing Bugs
+-----------
+
+NDK bugs should be filed on
+[GitHub](https://github.com/android-ndk/ndk/issues/new).
+
+Android Studio and Gradle bugs should be filed in the [Android Studio Bug
+Tracker](http://b.android.com). For the fastest response, make sure you follow
+their guide on [Filing Bugs](http://tools.android.com/filing-bugs).
--- a/Android/android-ndk-r27d/build/init.py
+++ b/Android/android-ndk-r27d/build/init.py
--- a/Android/android-ndk-r27d/build/cmake/abis.cmake
+++ b/Android/android-ndk-r27d/build/cmake/abis.cmake
@ -0,0 +1,40 @@
+set(NDK_DEFAULT_ABIS "arm64-v8a;armeabi-v7a;x86;x86_64")
+set(NDK_DEPRECATED_ABIS "")
+set(NDK_KNOWN_DEVICE_ABI32S "armeabi-v7a;x86")
+set(NDK_KNOWN_DEVICE_ABI64S "arm64-v8a;riscv64;x86_64")
+set(NDK_KNOWN_DEVICE_ABIS "arm64-v8a;armeabi-v7a;riscv64;x86;x86_64")
+set(NDK_ABI_armeabi-v7a_PROC "armv7-a")
+set(NDK_ABI_armeabi-v7a_ARCH "arm")
+set(NDK_ABI_armeabi-v7a_TRIPLE "arm-linux-androideabi")
+set(NDK_ABI_armeabi-v7a_LLVM_TRIPLE "armv7-none-linux-androideabi")
+set(NDK_ABI_armeabi-v7a_MIN_OS_VERSION "21")
+set(NDK_PROC_armv7-a_ABI "armeabi-v7a")
+set(NDK_ARCH_arm_ABI "armeabi-v7a")
+set(NDK_ABI_arm64-v8a_PROC "aarch64")
+set(NDK_ABI_arm64-v8a_ARCH "arm64")
+set(NDK_ABI_arm64-v8a_TRIPLE "aarch64-linux-android")
+set(NDK_ABI_arm64-v8a_LLVM_TRIPLE "aarch64-none-linux-android")
+set(NDK_ABI_arm64-v8a_MIN_OS_VERSION "21")
+set(NDK_PROC_aarch64_ABI "arm64-v8a")
+set(NDK_ARCH_arm64_ABI "arm64-v8a")
+set(NDK_ABI_riscv64_PROC "riscv64")
+set(NDK_ABI_riscv64_ARCH "riscv64")
+set(NDK_ABI_riscv64_TRIPLE "riscv64-linux-android")
+set(NDK_ABI_riscv64_LLVM_TRIPLE "riscv64-none-linux-android")
+set(NDK_ABI_riscv64_MIN_OS_VERSION "35")
+set(NDK_PROC_riscv64_ABI "riscv64")
+set(NDK_ARCH_riscv64_ABI "riscv64")
+set(NDK_ABI_x86_PROC "i686")
+set(NDK_ABI_x86_ARCH "x86")
+set(NDK_ABI_x86_TRIPLE "i686-linux-android")
+set(NDK_ABI_x86_LLVM_TRIPLE "i686-none-linux-android")
+set(NDK_ABI_x86_MIN_OS_VERSION "21")
+set(NDK_PROC_i686_ABI "x86")
+set(NDK_ARCH_x86_ABI "x86")
+set(NDK_ABI_x86_64_PROC "x86_64")
+set(NDK_ABI_x86_64_ARCH "x86_64")
+set(NDK_ABI_x86_64_TRIPLE "x86_64-linux-android")
+set(NDK_ABI_x86_64_LLVM_TRIPLE "x86_64-none-linux-android")
+set(NDK_ABI_x86_64_MIN_OS_VERSION "21")
+set(NDK_PROC_x86_64_ABI "x86_64")
+set(NDK_ARCH_x86_64_ABI "x86_64")
--- a/Android/android-ndk-r27d/build/cmake/adjust_api_level.cmake
+++ b/Android/android-ndk-r27d/build/cmake/adjust_api_level.cmake
@ -0,0 +1,64 @@
+include(${CMAKE_ANDROID_NDK}/build/cmake/abis.cmake)
+include(${CMAKE_ANDROID_NDK}/build/cmake/platforms.cmake)
+
+function(adjust_api_level api_level result_name)
+  # If no platform version was chosen by the user, default to the minimum
+  # version supported by this NDK.
+  if(NOT api_level)
+    message(STATUS
+      "ANDROID_PLATFORM not set. Defaulting to minimum supported version "
+      "${NDK_MIN_PLATFORM_LEVEL}.")
+
+    set(api_level "android-${NDK_MIN_PLATFORM_LEVEL}")
+  endif()
+
+  if(api_level STREQUAL "latest")
+    message(STATUS
+      "Using latest available ANDROID_PLATFORM: ${NDK_MAX_PLATFORM_LEVEL}.")
+    set(api_level "android-${NDK_MAX_PLATFORM_LEVEL}")
+  endif()
+
+  string(REPLACE "android-" "" result ${api_level})
+
+  # Aliases defined by meta/platforms.json include codename aliases for platform
+  # API levels as well as cover any gaps in platforms that may not have had NDK
+  # APIs.
+  if(NOT "${NDK_PLATFORM_ALIAS_${result}}" STREQUAL "")
+    message(STATUS
+      "${api_level} is an alias for ${NDK_PLATFORM_ALIAS_${result}}. Adjusting "
+      "ANDROID_PLATFORM to match.")
+    set(api_level "${NDK_PLATFORM_ALIAS_${result}}")
+    string(REPLACE "android-" "" result ${api_level})
+  endif()
+
+  # Pull up to the minimum supported version if an old API level was requested.
+  if(result LESS NDK_MIN_PLATFORM_LEVEL)
+    message(STATUS
+      "${api_level} is unsupported. Using minimum supported version "
+      "${NDK_MIN_PLATFORM_LEVEL}.")
+    set(api_level "android-${NDK_MIN_PLATFORM_LEVEL}")
+    string(REPLACE "android-" "" result ${api_level})
+  endif()
+
+  # Pull up any ABI-specific minimum API levels.
+  set(min_for_abi ${NDK_ABI_${ANDROID_ABI}_MIN_OS_VERSION})
+
+  if(result LESS min_for_abi)
+    message(STATUS
+      "android-${result} is not supported for ${ANDROID_ABI}. Using minimum "
+      "supported ${ANDROID_ABI} version ${min_for_abi}.")
+    set(api_level android-${min_for_abi})
+    set(result ${min_for_abi})
+  endif()
+
+  # ANDROID_PLATFORM beyond the maximum is an error. The correct way to specify
+  # the latest version is ANDROID_PLATFORM=latest.
+  if(result GREATER NDK_MAX_PLATFORM_LEVEL)
+    message(SEND_ERROR
+      "${api_level} is above the maximum supported version "
+      "${NDK_MAX_PLATFORM_LEVEL}. Choose a supported API level or set "
+      "ANDROID_PLATFORM to \"latest\".")
+  endif()
+
+  set(${result_name} ${result} PARENT_SCOPE)
+endfunction()
--- a/Android/android-ndk-r27d/build/cmake/android-legacy.toolchain.cmake
+++ b/Android/android-ndk-r27d/build/cmake/android-legacy.toolchain.cmake
@ -0,0 +1,752 @@
+# Copyright (C) 2016 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Configurable variables.
+# Modeled after the ndk-build system.
+# For any variables defined in:
+#         https://developer.android.com/ndk/guides/android_mk.html
+#         https://developer.android.com/ndk/guides/application_mk.html
+# if it makes sense for CMake, then replace LOCAL, APP, or NDK with ANDROID, and
+# we have that variable below.
+#
+# ANDROID_TOOLCHAIN
+# ANDROID_ABI
+# ANDROID_PLATFORM
+# ANDROID_STL
+# ANDROID_PIE
+# ANDROID_CPP_FEATURES
+# ANDROID_ALLOW_UNDEFINED_SYMBOLS
+# ANDROID_ARM_MODE
+# ANDROID_DISABLE_FORMAT_STRING_CHECKS
+# ANDROID_CCACHE
+# ANDROID_SANITIZE
+
+cmake_minimum_required(VERSION 3.12.0)
+
+# Inhibit all of CMake's own NDK handling code.
+set(CMAKE_SYSTEM_VERSION 1)
+
+# Android NDK
+get_filename_component(ANDROID_NDK_EXPECTED_PATH
+    "${CMAKE_CURRENT_LIST_DIR}/../.." ABSOLUTE)
+if(NOT ANDROID_NDK)
+  set(ANDROID_NDK "${ANDROID_NDK_EXPECTED_PATH}")
+else()
+  # Allow the user to specify their own NDK path, but emit a warning. This is an
+  # uncommon use case, but helpful if users want to use a bleeding edge
+  # toolchain file with a stable NDK.
+  # https://github.com/android-ndk/ndk/issues/473
+  get_filename_component(ANDROID_NDK "${ANDROID_NDK}" ABSOLUTE)
+  if(NOT "${ANDROID_NDK}" STREQUAL "${ANDROID_NDK_EXPECTED_PATH}")
+    message(WARNING "Using custom NDK path (ANDROID_NDK is set): ${ANDROID_NDK}")
+  endif()
+endif()
+unset(ANDROID_NDK_EXPECTED_PATH)
+file(TO_CMAKE_PATH "${ANDROID_NDK}" ANDROID_NDK)
+
+# Android NDK revision
+# Possible formats:
+# * r16, build 1234: 16.0.1234
+# * r16b, build 1234: 16.1.1234
+# * r16 beta 1, build 1234: 16.0.1234-beta1
+#
+# Canary builds are not specially marked.
+file(READ "${ANDROID_NDK}/source.properties" ANDROID_NDK_SOURCE_PROPERTIES)
+
+set(ANDROID_NDK_REVISION_REGEX
+  "^Pkg\\.Desc = Android NDK\nPkg\\.Revision = ([0-9]+)\\.([0-9]+)\\.([0-9]+)(-beta([0-9]+))?")
+if(NOT ANDROID_NDK_SOURCE_PROPERTIES MATCHES "${ANDROID_NDK_REVISION_REGEX}")
+  message(SEND_ERROR "Failed to parse Android NDK revision: ${ANDROID_NDK}/source.properties.\n${ANDROID_NDK_SOURCE_PROPERTIES}")
+endif()
+
+set(ANDROID_NDK_MAJOR "${CMAKE_MATCH_1}")
+set(ANDROID_NDK_MINOR "${CMAKE_MATCH_2}")
+set(ANDROID_NDK_BUILD "${CMAKE_MATCH_3}")
+set(ANDROID_NDK_BETA "${CMAKE_MATCH_5}")
+if(ANDROID_NDK_BETA STREQUAL "")
+  set(ANDROID_NDK_BETA "0")
+endif()
+set(ANDROID_NDK_REVISION
+  "${ANDROID_NDK_MAJOR}.${ANDROID_NDK_MINOR}.${ANDROID_NDK_BUILD}${CMAKE_MATCH_4}")
+
+# Touch toolchain variable to suppress "unused variable" warning.
+# This happens if CMake is invoked with the same command line the second time.
+if(CMAKE_TOOLCHAIN_FILE)
+endif()
+
+# Compatibility for configurable variables.
+# Compatible with configurable variables from the other toolchain file:
+#         https://github.com/taka-no-me/android-cmake
+# TODO: We should consider dropping compatibility to simplify things once most
+# of our users have migrated to our standard set of configurable variables.
+if(ANDROID_TOOLCHAIN_NAME AND NOT ANDROID_TOOLCHAIN)
+  if(ANDROID_TOOLCHAIN_NAME MATCHES "-clang([0-9].[0-9])?$")
+    set(ANDROID_TOOLCHAIN clang)
+  elseif(ANDROID_TOOLCHAIN_NAME MATCHES "-[0-9].[0-9]$")
+    set(ANDROID_TOOLCHAIN gcc)
+  endif()
+endif()
+if(ANDROID_ABI STREQUAL "armeabi-v7a with NEON")
+  set(ANDROID_ABI armeabi-v7a)
+elseif(ANDROID_TOOLCHAIN_NAME AND NOT ANDROID_ABI)
+  if(ANDROID_TOOLCHAIN_NAME MATCHES "^arm-linux-androideabi-")
+    set(ANDROID_ABI armeabi-v7a)
+  elseif(ANDROID_TOOLCHAIN_NAME MATCHES "^aarch64-linux-android-")
+    set(ANDROID_ABI arm64-v8a)
+  elseif(ANDROID_TOOLCHAIN_NAME MATCHES "^x86-")
+    set(ANDROID_ABI x86)
+  elseif(ANDROID_TOOLCHAIN_NAME MATCHES "^x86_64-")
+    set(ANDROID_ABI x86_64)
+  elseif(ANDROID_TOOLCHAIN_NAME MATCHES "^mipsel-linux-android-")
+    set(ANDROID_ABI mips)
+  elseif(ANDROID_TOOLCHAIN_NAME MATCHES "^mips64el-linux-android-")
+    set(ANDROID_ABI mips64)
+  elseif(ANDROID_TOOLCHAIN_NAME MATCHES "^riscv64-")
+    set(ANDROID_ABI riscv64)
+  endif()
+endif()
+if(ANDROID_NATIVE_API_LEVEL AND NOT ANDROID_PLATFORM)
+  if(ANDROID_NATIVE_API_LEVEL MATCHES "^android-[0-9]+$")
+    set(ANDROID_PLATFORM ${ANDROID_NATIVE_API_LEVEL})
+  elseif(ANDROID_NATIVE_API_LEVEL MATCHES "^[0-9]+$")
+    set(ANDROID_PLATFORM android-${ANDROID_NATIVE_API_LEVEL})
+  endif()
+endif()
+if(DEFINED ANDROID_APP_PIE AND NOT DEFINED ANDROID_PIE)
+  set(ANDROID_PIE "${ANDROID_APP_PIE}")
+endif()
+if(ANDROID_STL_FORCE_FEATURES AND NOT DEFINED ANDROID_CPP_FEATURES)
+  set(ANDROID_CPP_FEATURES "rtti exceptions")
+endif()
+if(DEFINED ANDROID_NO_UNDEFINED AND NOT DEFINED ANDROID_ALLOW_UNDEFINED_SYMBOLS)
+  if(ANDROID_NO_UNDEFINED)
+    set(ANDROID_ALLOW_UNDEFINED_SYMBOLS FALSE)
+  else()
+    set(ANDROID_ALLOW_UNDEFINED_SYMBOLS TRUE)
+  endif()
+endif()
+if(DEFINED ANDROID_SO_UNDEFINED AND NOT DEFINED ANDROID_ALLOW_UNDEFINED_SYMBOLS)
+  set(ANDROID_ALLOW_UNDEFINED_SYMBOLS "${ANDROID_SO_UNDEFINED}")
+endif()
+if(DEFINED ANDROID_FORCE_ARM_BUILD AND NOT ANDROID_ARM_MODE)
+  if(ANDROID_FORCE_ARM_BUILD)
+    set(ANDROID_ARM_MODE arm)
+  else()
+    set(ANDROID_ARM_MODE thumb)
+  endif()
+endif()
+if(NDK_CCACHE AND NOT ANDROID_CCACHE)
+  set(ANDROID_CCACHE "${NDK_CCACHE}")
+endif()
+
+# Default values for configurable variables.
+if(NOT ANDROID_TOOLCHAIN)
+  set(ANDROID_TOOLCHAIN clang)
+elseif(ANDROID_TOOLCHAIN STREQUAL gcc)
+  message(FATAL_ERROR "GCC is no longer supported. See "
+  "https://android.googlesource.com/platform/ndk/+/master/docs/ClangMigration.md.")
+endif()
+if(NOT ANDROID_ABI)
+  set(ANDROID_ABI armeabi-v7a)
+endif()
+
+if(ANDROID_ABI STREQUAL armeabi)
+  message(FATAL_ERROR "armeabi is no longer supported. Use armeabi-v7a.")
+elseif(ANDROID_ABI MATCHES "^(mips|mips64)$")
+  message(FATAL_ERROR "MIPS and MIPS64 are no longer supported.")
+endif()
+
+if(DEFINED ANDROID_ARM_NEON AND NOT ANDROID_ARM_NEON)
+  message(FATAL_ERROR "Disabling Neon is no longer supported")
+endif()
+
+if(ANDROID_ABI STREQUAL armeabi-v7a)
+  set(ANDROID_ARM_NEON TRUE)
+endif()
+
+include(${ANDROID_NDK}/build/cmake/abis.cmake)
+include(${ANDROID_NDK}/build/cmake/platforms.cmake)
+
+# If no platform version was chosen by the user, default to the minimum version
+# supported by this NDK.
+if(NOT ANDROID_PLATFORM)
+  message(STATUS "\
+ANDROID_PLATFORM not set. Defaulting to minimum supported version
+${NDK_MIN_PLATFORM_LEVEL}.")
+
+  set(ANDROID_PLATFORM "android-${NDK_MIN_PLATFORM_LEVEL}")
+endif()
+
+if(ANDROID_PLATFORM STREQUAL "latest")
+  message(STATUS
+    "Using latest available ANDROID_PLATFORM: ${NDK_MAX_PLATFORM_LEVEL}.")
+  set(ANDROID_PLATFORM "android-${NDK_MAX_PLATFORM_LEVEL}")
+  string(REPLACE "android-" "" ANDROID_PLATFORM_LEVEL ${ANDROID_PLATFORM})
+endif()
+
+string(REPLACE "android-" "" ANDROID_PLATFORM_LEVEL ${ANDROID_PLATFORM})
+
+# Aliases defined by meta/platforms.json include codename aliases for platform
+# API levels as well as cover any gaps in platforms that may not have had NDK
+# APIs.
+if(NOT "${NDK_PLATFORM_ALIAS_${ANDROID_PLATFORM_LEVEL}}" STREQUAL "")
+  message(STATUS "\
+${ANDROID_PLATFORM} is an alias for \
+${NDK_PLATFORM_ALIAS_${ANDROID_PLATFORM_LEVEL}}. Adjusting ANDROID_PLATFORM to \
+match.")
+  set(ANDROID_PLATFORM "${NDK_PLATFORM_ALIAS_${ANDROID_PLATFORM_LEVEL}}")
+  string(REPLACE "android-" "" ANDROID_PLATFORM_LEVEL ${ANDROID_PLATFORM})
+endif()
+
+# Pull up to the minimum supported version if an old API level was requested.
+if(ANDROID_PLATFORM_LEVEL LESS NDK_MIN_PLATFORM_LEVEL)
+  message(STATUS "\
+${ANDROID_PLATFORM} is unsupported. Using minimum supported version \
+${NDK_MIN_PLATFORM_LEVEL}.")
+  set(ANDROID_PLATFORM "android-${NDK_MIN_PLATFORM_LEVEL}")
+  string(REPLACE "android-" "" ANDROID_PLATFORM_LEVEL ${ANDROID_PLATFORM})
+endif()
+
+# Pull up any ABI-specific minimum API levels.
+set(min_for_abi ${NDK_ABI_${ANDROID_ABI}_MIN_OS_VERSION})
+
+if(ANDROID_PLATFORM_LEVEL LESS min_for_abi)
+  message(STATUS
+    "${ANDROID_PLATFORM} is not supported for ${ANDROID_ABI}. Using minimum "
+    "supported ${ANDROID_ABI} version ${min_for_abi}.")
+  set(ANDROID_PLATFORM android-${min_for_abi})
+  set(ANDROID_PLATFORM_LEVEL ${min_for_abi})
+endif()
+
+# ANDROID_PLATFORM beyond the maximum is an error. The correct way to specify
+# the latest version is ANDROID_PLATFORM=latest.
+if(ANDROID_PLATFORM_LEVEL GREATER NDK_MAX_PLATFORM_LEVEL)
+  message(SEND_ERROR "\
+${ANDROID_PLATFORM} is above the maximum supported version \
+${NDK_MAX_PLATFORM_LEVEL}. Choose a supported API level or set \
+ANDROID_PLATFORM to \"latest\".")
+endif()
+
+if(NOT ANDROID_STL)
+  set(ANDROID_STL c++_static)
+endif()
+
+if("${ANDROID_STL}" STREQUAL "gnustl_shared" OR
+    "${ANDROID_STL}" STREQUAL "gnustl_static" OR
+    "${ANDROID_STL}" STREQUAL "stlport_shared" OR
+    "${ANDROID_STL}" STREQUAL "stlport_static")
+  message(FATAL_ERROR "\
+${ANDROID_STL} is no longer supported. Please switch to either c++_shared or \
+c++_static. See https://developer.android.com/ndk/guides/cpp-support.html \
+for more information.")
+endif()
+
+if("hwaddress" IN_LIST ANDROID_SANITIZE AND "${CMAKE_ANDROID_STL_TYPE}" STREQUAL "c++_static")
+  message(FATAL_ERROR "\
+  hwaddress does not support c++_static. Use system or c++_shared.")
+endif()
+
+set(ANDROID_PIE TRUE)
+if(NOT ANDROID_ARM_MODE)
+  set(ANDROID_ARM_MODE thumb)
+endif()
+
+# Export configurable variables for the try_compile() command.
+set(CMAKE_TRY_COMPILE_PLATFORM_VARIABLES
+  ANDROID_ABI
+  ANDROID_ALLOW_UNDEFINED_SYMBOLS
+  ANDROID_ARM_MODE
+  ANDROID_ARM_NEON
+  ANDROID_CCACHE
+  ANDROID_CPP_FEATURES
+  ANDROID_DISABLE_FORMAT_STRING_CHECKS
+  ANDROID_PIE
+  ANDROID_PLATFORM
+  ANDROID_STL
+  ANDROID_TOOLCHAIN
+  ANDROID_USE_LEGACY_TOOLCHAIN_FILE
+)
+
+# Standard cross-compiling stuff.
+set(ANDROID TRUE)
+set(CMAKE_SYSTEM_NAME Android)
+
+# https://github.com/android-ndk/ndk/issues/890
+#
+# ONLY doesn't do anything when CMAKE_FIND_ROOT_PATH is empty. Without this,
+# CMake will wrongly search host sysroots for headers/libraries. The actual path
+# used here is fairly meaningless since CMake doesn't handle the NDK sysroot
+# layout (per-arch and per-verion subdirectories for libraries), so find_library
+# is handled separately by CMAKE_SYSTEM_LIBRARY_PATH.
+list(APPEND CMAKE_FIND_ROOT_PATH "${ANDROID_NDK}")
+
+# Allow users to override these values in case they want more strict behaviors.
+# For example, they may want to prevent the NDK's libz from being picked up so
+# they can use their own.
+# https://github.com/android-ndk/ndk/issues/517
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+endif()
+
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+endif()
+
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+endif()
+
+# ABI.
+set(CMAKE_ANDROID_ARCH_ABI ${ANDROID_ABI})
+if(ANDROID_ABI STREQUAL armeabi-v7a)
+  set(ANDROID_SYSROOT_ABI arm)
+  set(ANDROID_TOOLCHAIN_NAME arm-linux-androideabi)
+  set(CMAKE_SYSTEM_PROCESSOR armv7-a)
+  set(ANDROID_LLVM_TRIPLE armv7-none-linux-androideabi)
+elseif(ANDROID_ABI STREQUAL arm64-v8a)
+  set(ANDROID_SYSROOT_ABI arm64)
+  set(CMAKE_SYSTEM_PROCESSOR aarch64)
+  set(ANDROID_TOOLCHAIN_NAME aarch64-linux-android)
+  set(ANDROID_LLVM_TRIPLE aarch64-none-linux-android)
+elseif(ANDROID_ABI STREQUAL x86)
+  set(ANDROID_SYSROOT_ABI x86)
+  set(CMAKE_SYSTEM_PROCESSOR i686)
+  set(ANDROID_TOOLCHAIN_NAME i686-linux-android)
+  set(ANDROID_LLVM_TRIPLE i686-none-linux-android)
+elseif(ANDROID_ABI STREQUAL x86_64)
+  set(ANDROID_SYSROOT_ABI x86_64)
+  set(CMAKE_SYSTEM_PROCESSOR x86_64)
+  set(ANDROID_TOOLCHAIN_NAME x86_64-linux-android)
+  set(ANDROID_LLVM_TRIPLE x86_64-none-linux-android)
+elseif(ANDROID_ABI STREQUAL riscv64)
+  set(ANDROID_SYSROOT_ABI riscv64)
+  set(CMAKE_SYSTEM_PROCESSOR riscv64)
+  set(ANDROID_TOOLCHAIN_NAME riscv64-linux-android)
+  set(ANDROID_LLVM_TRIPLE riscv64-none-linux-android)
+else()
+  message(FATAL_ERROR "Invalid Android ABI: ${ANDROID_ABI}.")
+endif()
+
+set(ANDROID_LLVM_TRIPLE "${ANDROID_LLVM_TRIPLE}${ANDROID_PLATFORM_LEVEL}")
+
+set(ANDROID_COMPILER_FLAGS)
+set(ANDROID_COMPILER_FLAGS_CXX)
+set(ANDROID_COMPILER_FLAGS_DEBUG)
+set(ANDROID_COMPILER_FLAGS_RELEASE)
+set(ANDROID_LINKER_FLAGS)
+set(ANDROID_LINKER_FLAGS_EXE)
+set(ANDROID_LINKER_FLAGS_RELEASE)
+set(ANDROID_LINKER_FLAGS_RELWITHDEBINFO)
+set(ANDROID_LINKER_FLAGS_MINSIZEREL)
+
+# STL.
+set(ANDROID_CXX_STANDARD_LIBRARIES)
+if(ANDROID_STL STREQUAL system)
+  list(APPEND ANDROID_COMPILER_FLAGS_CXX "-stdlib=libstdc++")
+  if(NOT "x${ANDROID_CPP_FEATURES}" STREQUAL "x")
+    list(APPEND ANDROID_CXX_STANDARD_LIBRARIES "-lc++abi")
+  endif()
+elseif(ANDROID_STL STREQUAL c++_static)
+  list(APPEND ANDROID_LINKER_FLAGS "-static-libstdc++")
+elseif(ANDROID_STL STREQUAL c++_shared)
+elseif(ANDROID_STL STREQUAL none)
+  list(APPEND ANDROID_COMPILER_FLAGS_CXX "-nostdinc++")
+  list(APPEND ANDROID_LINKER_FLAGS "-nostdlib++")
+else()
+  message(FATAL_ERROR "Invalid STL: ${ANDROID_STL}.")
+endif()
+
+if(CMAKE_HOST_SYSTEM_NAME STREQUAL Linux)
+  set(ANDROID_HOST_TAG linux-x86_64)
+elseif(CMAKE_HOST_SYSTEM_NAME STREQUAL Darwin)
+  set(ANDROID_HOST_TAG darwin-x86_64)
+elseif(CMAKE_HOST_SYSTEM_NAME STREQUAL Windows)
+  set(ANDROID_HOST_TAG windows-x86_64)
+endif()
+
+if(CMAKE_HOST_SYSTEM_NAME STREQUAL Windows)
+  set(ANDROID_TOOLCHAIN_SUFFIX .exe)
+endif()
+
+# Toolchain.
+set(ANDROID_TOOLCHAIN_ROOT
+  "${ANDROID_NDK}/toolchains/llvm/prebuilt/${ANDROID_HOST_TAG}")
+
+list(APPEND CMAKE_PREFIX_PATH "${ANDROID_TOOLCHAIN_ROOT}")
+
+# NB: This variable causes CMake to automatically pass --sysroot to the
+# toolchain. Studio currently relies on this to recognize Android builds. If
+# this variable is removed, ensure that flag is still passed.
+# TODO: Teach Studio to recognize Android builds based on --target.
+set(CMAKE_SYSROOT "${ANDROID_TOOLCHAIN_ROOT}/sysroot")
+
+# Allows CMake to find headers in the architecture-specific include directories.
+set(CMAKE_LIBRARY_ARCHITECTURE "${ANDROID_TOOLCHAIN_NAME}")
+
+# In addition to <root>/<prefix>/lib/<arch>, cmake also searches <root>/<prefix>.
+# Adding the API specific path to the beginning of CMAKE_SYSTEM_PREFIX_PATH, to
+# make sure it is searched first.
+set(CMAKE_SYSTEM_PREFIX_PATH
+  "/usr/lib/${ANDROID_TOOLCHAIN_NAME}/${ANDROID_PLATFORM_LEVEL}"
+  "${CMAKE_SYSTEM_PREFIX_PATH}"
+  )
+
+set(ANDROID_HOST_PREBUILTS "${ANDROID_NDK}/prebuilt/${ANDROID_HOST_TAG}")
+
+set(ANDROID_C_COMPILER
+  "${ANDROID_TOOLCHAIN_ROOT}/bin/clang${ANDROID_TOOLCHAIN_SUFFIX}")
+set(ANDROID_CXX_COMPILER
+  "${ANDROID_TOOLCHAIN_ROOT}/bin/clang++${ANDROID_TOOLCHAIN_SUFFIX}")
+set(ANDROID_ASM_COMPILER
+  "${ANDROID_TOOLCHAIN_ROOT}/bin/clang${ANDROID_TOOLCHAIN_SUFFIX}")
+set(CMAKE_C_COMPILER_TARGET   ${ANDROID_LLVM_TRIPLE})
+set(CMAKE_CXX_COMPILER_TARGET ${ANDROID_LLVM_TRIPLE})
+set(CMAKE_ASM_COMPILER_TARGET ${ANDROID_LLVM_TRIPLE})
+set(ANDROID_AR
+  "${ANDROID_TOOLCHAIN_ROOT}/bin/llvm-ar${ANDROID_TOOLCHAIN_SUFFIX}")
+set(ANDROID_RANLIB
+  "${ANDROID_TOOLCHAIN_ROOT}/bin/llvm-ranlib${ANDROID_TOOLCHAIN_SUFFIX}")
+set(ANDROID_STRIP
+  "${ANDROID_TOOLCHAIN_ROOT}/bin/llvm-strip${ANDROID_TOOLCHAIN_SUFFIX}")
+
+if(${CMAKE_VERSION} VERSION_LESS "3.19")
+    # Older CMake won't pass -target when running the compiler identification
+    # test, which causes the test to fail on flags like -mthumb.
+    # https://github.com/android/ndk/issues/1427
+    message(WARNING "An old version of CMake is being used that cannot "
+      "automatically detect compiler attributes. Compiler identification is "
+      "being bypassed. Some values may be wrong or missing. Update to CMake "
+      "3.19 or newer to use CMake's built-in compiler identification.")
+    set(CMAKE_C_COMPILER_ID_RUN TRUE)
+    set(CMAKE_CXX_COMPILER_ID_RUN TRUE)
+    set(CMAKE_C_COMPILER_ID Clang)
+    set(CMAKE_CXX_COMPILER_ID Clang)
+    # No need to auto-detect the computed standard defaults because CMake 3.6
+    # doesn't know about anything past C11 or C++14 (neither does 3.10, so no
+    # need to worry about 3.7-3.9), and any higher standards that Clang might
+    # use are clamped to those values.
+    set(CMAKE_C_STANDARD_COMPUTED_DEFAULT 11)
+    set(CMAKE_CXX_STANDARD_COMPUTED_DEFAULT 14)
+    set(CMAKE_C_COMPILER_FRONTEND_VARIANT "GNU")
+    set(CMAKE_CXX_COMPILER_FRONTEND_VARIANT "GNU")
+    include(${ANDROID_NDK}/build/cmake/compiler_id.cmake)
+endif()
+
+# Generic flags.
+list(APPEND ANDROID_COMPILER_FLAGS
+  -g
+  -DANDROID
+  -fdata-sections
+  -ffunction-sections
+  -funwind-tables
+  -fstack-protector-strong
+  -no-canonical-prefixes)
+
+if(ANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES)
+  list(APPEND ANDROID_COMPILER_FLAGS -D__BIONIC_NO_PAGE_SIZE_MACRO)
+  if(ANDROID_ABI STREQUAL arm64-v8a OR ANDROID_ABI STREQUAL x86_64)
+    list(APPEND ANDROID_LINKER_FLAGS -Wl,-z,max-page-size=16384)
+  endif()
+endif()
+
+if(ANDROID_WEAK_API_DEFS)
+  list(APPEND ANDROID_COMPILER_FLAGS
+      -D__ANDROID_UNAVAILABLE_SYMBOLS_ARE_WEAK__
+      -Werror=unguarded-availability)
+endif()
+
+if("hwaddress" IN_LIST ANDROID_SANITIZE)
+  list(APPEND ANDROID_COMPILER_FLAGS -fsanitize=hwaddress -fno-omit-frame-pointer)
+  list(APPEND ANDROID_LINKER_FLAGS -fsanitize=hwaddress)
+endif()
+
+if("memtag" IN_LIST ANDROID_SANITIZE)
+  list(APPEND ANDROID_COMPILER_FLAGS -fsanitize=memtag-stack -fno-omit-frame-pointer)
+  list(APPEND ANDROID_LINKER_FLAGS -fsanitize=memtag-stack,memtag-heap -fsanitize-memtag-mode=sync)
+  if(ANDROID_ABI STREQUAL arm64-v8a)
+    list(APPEND ANDROID_COMPILER_FLAGS -march=armv8-a+memtag)
+    list(APPEND ANDROID_LINKER_FLAGS -march=armv8-a+memtag)
+  endif()
+endif()
+
+# https://github.com/android/ndk/issues/885
+# If we're using LLD we need to use a slower build-id algorithm to work around
+# the old version of LLDB in Android Studio, which doesn't understand LLD's
+# default hash ("fast").
+list(APPEND ANDROID_LINKER_FLAGS -Wl,--build-id=sha1)
+if(ANDROID_PLATFORM_LEVEL LESS 30)
+  # https://github.com/android/ndk/issues/1196
+  # https://github.com/android/ndk/issues/1589
+  list(APPEND ANDROID_LINKER_FLAGS -Wl,--no-rosegment)
+endif()
+
+if (NOT ANDROID_ALLOW_UNDEFINED_VERSION_SCRIPT_SYMBOLS)
+  list(APPEND ANDROID_LINKER_FLAGS -Wl,--no-undefined-version)
+endif()
+
+list(APPEND ANDROID_LINKER_FLAGS -Wl,--fatal-warnings)
+
+# --gc-sections should not be present for debug builds because that can strip
+# functions that the user may want to evaluate while debugging.
+list(APPEND ANDROID_LINKER_FLAGS_RELEASE -Wl,--gc-sections)
+list(APPEND ANDROID_LINKER_FLAGS_RELWITHDEBINFO -Wl,--gc-sections)
+list(APPEND ANDROID_LINKER_FLAGS_MINSIZEREL -Wl,--gc-sections)
+
+# Debug and release flags.
+list(APPEND ANDROID_COMPILER_FLAGS_RELEASE -O3)
+list(APPEND ANDROID_COMPILER_FLAGS_RELEASE -DNDEBUG)
+if(ANDROID_TOOLCHAIN STREQUAL clang)
+  list(APPEND ANDROID_COMPILER_FLAGS_DEBUG -fno-limit-debug-info)
+endif()
+
+# Toolchain and ABI specific flags.
+if(ANDROID_ABI STREQUAL x86 AND ANDROID_PLATFORM_LEVEL LESS 24)
+  # http://b.android.com/222239
+  # http://b.android.com/220159 (internal http://b/31809417)
+  # x86 devices have stack alignment issues.
+  list(APPEND ANDROID_COMPILER_FLAGS -mstackrealign)
+endif()
+
+list(APPEND ANDROID_COMPILER_FLAGS -D_FORTIFY_SOURCE=2)
+
+set(CMAKE_C_STANDARD_LIBRARIES_INIT "-latomic -lm")
+set(CMAKE_CXX_STANDARD_LIBRARIES_INIT "${CMAKE_C_STANDARD_LIBRARIES_INIT}")
+if(ANDROID_CXX_STANDARD_LIBRARIES)
+  string(REPLACE ";" "\" \"" ANDROID_CXX_STANDARD_LIBRARIES "\"${ANDROID_CXX_STANDARD_LIBRARIES}\"")
+  set(CMAKE_CXX_STANDARD_LIBRARIES_INIT "${CMAKE_CXX_STANDARD_LIBRARIES_INIT} ${ANDROID_CXX_STANDARD_LIBRARIES}")
+endif()
+
+# Configuration specific flags.
+
+# PIE is supported on all currently supported Android releases, but it is not
+# supported with static executables, so we still provide ANDROID_PIE as an
+# escape hatch for those.
+if(ANDROID_PIE)
+  set(CMAKE_POSITION_INDEPENDENT_CODE TRUE)
+endif()
+
+if(ANDROID_CPP_FEATURES)
+  separate_arguments(ANDROID_CPP_FEATURES)
+  foreach(feature ${ANDROID_CPP_FEATURES})
+    if(NOT ${feature} MATCHES "^(rtti|exceptions|no-rtti|no-exceptions)$")
+      message(FATAL_ERROR "Invalid Android C++ feature: ${feature}.")
+    endif()
+    list(APPEND ANDROID_COMPILER_FLAGS_CXX
+      -f${feature})
+  endforeach()
+  string(REPLACE ";" " " ANDROID_CPP_FEATURES "${ANDROID_CPP_FEATURES}")
+endif()
+if(NOT ANDROID_ALLOW_UNDEFINED_SYMBOLS)
+  list(APPEND ANDROID_LINKER_FLAGS
+    -Wl,--no-undefined)
+endif()
+if(ANDROID_ABI MATCHES "armeabi")
+  # Clang does not set this up properly when using -fno-integrated-as.
+  # https://github.com/android-ndk/ndk/issues/906
+  list(APPEND ANDROID_COMPILER_FLAGS "-march=armv7-a")
+  if(ANDROID_ARM_MODE STREQUAL thumb)
+    list(APPEND ANDROID_COMPILER_FLAGS -mthumb)
+  elseif(ANDROID_ARM_MODE STREQUAL arm)
+    # Default behavior.
+  else()
+    message(FATAL_ERROR "Invalid Android ARM mode: ${ANDROID_ARM_MODE}.")
+  endif()
+endif()
+
+# CMake automatically forwards all compiler flags to the linker, and clang
+# doesn't like having -Wa flags being used for linking. To prevent CMake from
+# doing this would require meddling with the CMAKE_<LANG>_COMPILE_OBJECT rules,
+# which would get quite messy.
+list(APPEND ANDROID_LINKER_FLAGS -Qunused-arguments)
+
+if(ANDROID_DISABLE_FORMAT_STRING_CHECKS)
+  list(APPEND ANDROID_COMPILER_FLAGS
+    -Wno-error=format-security)
+else()
+  list(APPEND ANDROID_COMPILER_FLAGS
+    -Wformat -Werror=format-security)
+endif()
+
+# Convert these lists into strings.
+string(REPLACE ";" " " ANDROID_COMPILER_FLAGS         "${ANDROID_COMPILER_FLAGS}")
+string(REPLACE ";" " " ANDROID_COMPILER_FLAGS_CXX     "${ANDROID_COMPILER_FLAGS_CXX}")
+string(REPLACE ";" " " ANDROID_COMPILER_FLAGS_DEBUG   "${ANDROID_COMPILER_FLAGS_DEBUG}")
+string(REPLACE ";" " " ANDROID_COMPILER_FLAGS_RELEASE "${ANDROID_COMPILER_FLAGS_RELEASE}")
+string(REPLACE ";" " " ANDROID_LINKER_FLAGS           "${ANDROID_LINKER_FLAGS}")
+string(REPLACE ";" " " ANDROID_LINKER_FLAGS_EXE       "${ANDROID_LINKER_FLAGS_EXE}")
+string(REPLACE ";" " " ANDROID_LINKER_FLAGS_RELEASE   "${ANDROID_LINKER_FLAGS_RELEASE}")
+string(REPLACE ";" " " ANDROID_LINKER_FLAGS_RELWITHDEBINFO "${ANDROID_LINKER_FLAGS_RELWITHDEBINFO}")
+string(REPLACE ";" " " ANDROID_LINKER_FLAGS_MINSIZEREL "${ANDROID_LINKER_FLAGS_MINSIZEREL}")
+
+if(ANDROID_CCACHE)
+  set(CMAKE_C_COMPILER_LAUNCHER   "${ANDROID_CCACHE}")
+  set(CMAKE_CXX_COMPILER_LAUNCHER "${ANDROID_CCACHE}")
+endif()
+set(CMAKE_C_COMPILER "${ANDROID_C_COMPILER}")
+set(CMAKE_CXX_COMPILER "${ANDROID_CXX_COMPILER}")
+set(CMAKE_AR "${ANDROID_AR}" CACHE FILEPATH "Archiver")
+set(CMAKE_RANLIB "${ANDROID_RANLIB}" CACHE FILEPATH "Ranlib")
+set(CMAKE_STRIP "${ANDROID_STRIP}" CACHE FILEPATH "Strip")
+
+if(ANDROID_ABI STREQUAL "x86" OR ANDROID_ABI STREQUAL "x86_64")
+  set(CMAKE_ASM_NASM_COMPILER
+    "${ANDROID_TOOLCHAIN_ROOT}/bin/yasm${ANDROID_TOOLCHAIN_SUFFIX}")
+  set(CMAKE_ASM_NASM_COMPILER_ARG1 "-DELF")
+endif()
+
+# Set or retrieve the cached flags.
+# This is necessary in case the user sets/changes flags in subsequent
+# configures. If we included the Android flags in here, they would get
+# overwritten.
+set(CMAKE_C_FLAGS ""
+  CACHE STRING "Flags used by the compiler during all build types.")
+set(CMAKE_CXX_FLAGS ""
+  CACHE STRING "Flags used by the compiler during all build types.")
+set(CMAKE_ASM_FLAGS ""
+  CACHE STRING "Flags used by the compiler during all build types.")
+set(CMAKE_C_FLAGS_DEBUG ""
+  CACHE STRING "Flags used by the compiler during debug builds.")
+set(CMAKE_CXX_FLAGS_DEBUG ""
+  CACHE STRING "Flags used by the compiler during debug builds.")
+set(CMAKE_ASM_FLAGS_DEBUG ""
+  CACHE STRING "Flags used by the compiler during debug builds.")
+set(CMAKE_C_FLAGS_RELEASE ""
+  CACHE STRING "Flags used by the compiler during release builds.")
+set(CMAKE_CXX_FLAGS_RELEASE ""
+  CACHE STRING "Flags used by the compiler during release builds.")
+set(CMAKE_ASM_FLAGS_RELEASE ""
+  CACHE STRING "Flags used by the compiler during release builds.")
+set(CMAKE_MODULE_LINKER_FLAGS ""
+  CACHE STRING "Flags used by the linker during the creation of modules.")
+set(CMAKE_SHARED_LINKER_FLAGS ""
+  CACHE STRING "Flags used by the linker during the creation of dll's.")
+set(CMAKE_EXE_LINKER_FLAGS ""
+  CACHE STRING "Flags used by the linker.")
+
+set(CMAKE_C_FLAGS             "${ANDROID_COMPILER_FLAGS} ${CMAKE_C_FLAGS}")
+set(CMAKE_CXX_FLAGS           "${ANDROID_COMPILER_FLAGS} ${ANDROID_COMPILER_FLAGS_CXX} ${CMAKE_CXX_FLAGS}")
+set(CMAKE_ASM_FLAGS           "${ANDROID_COMPILER_FLAGS} ${CMAKE_ASM_FLAGS}")
+set(CMAKE_C_FLAGS_DEBUG       "${ANDROID_COMPILER_FLAGS_DEBUG} ${CMAKE_C_FLAGS_DEBUG}")
+set(CMAKE_CXX_FLAGS_DEBUG     "${ANDROID_COMPILER_FLAGS_DEBUG} ${CMAKE_CXX_FLAGS_DEBUG}")
+set(CMAKE_ASM_FLAGS_DEBUG     "${ANDROID_COMPILER_FLAGS_DEBUG} ${CMAKE_ASM_FLAGS_DEBUG}")
+set(CMAKE_C_FLAGS_RELEASE     "${ANDROID_COMPILER_FLAGS_RELEASE} ${CMAKE_C_FLAGS_RELEASE}")
+set(CMAKE_CXX_FLAGS_RELEASE   "${ANDROID_COMPILER_FLAGS_RELEASE} ${CMAKE_CXX_FLAGS_RELEASE}")
+set(CMAKE_ASM_FLAGS_RELEASE   "${ANDROID_COMPILER_FLAGS_RELEASE} ${CMAKE_ASM_FLAGS_RELEASE}")
+set(CMAKE_SHARED_LINKER_FLAGS "${ANDROID_LINKER_FLAGS} ${CMAKE_SHARED_LINKER_FLAGS}")
+set(CMAKE_MODULE_LINKER_FLAGS "${ANDROID_LINKER_FLAGS} ${CMAKE_MODULE_LINKER_FLAGS}")
+set(CMAKE_EXE_LINKER_FLAGS    "${ANDROID_LINKER_FLAGS} ${ANDROID_LINKER_FLAGS_EXE} ${CMAKE_EXE_LINKER_FLAGS}")
+set(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${ANDROID_LINKER_FLAGS_RELEASE} ${CMAKE_SHARED_LINKER_FLAGS_RELEASE}")
+set(CMAKE_MODULE_LINKER_FLAGS_RELEASE "${ANDROID_LINKER_FLAGS_RELEASE} ${CMAKE_MODULE_LINKER_FLAGS_RELEASE}")
+set(CMAKE_EXE_LINKER_FLAGS_RELEASE    "${ANDROID_LINKER_FLAGS_RELEASE} ${CMAKE_EXE_LINKER_FLAGS_RELEASE}")
+set(CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO "${ANDROID_LINKER_FLAGS_RELWITHDEBINFO} ${CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO}")
+set(CMAKE_MODULE_LINKER_FLAGS_RELWITHDEBINFO "${ANDROID_LINKER_FLAGS_RELWITHDEBINFO} ${CMAKE_MODULE_LINKER_FLAGS_RELWITHDEBINFO}")
+set(CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO    "${ANDROID_LINKER_FLAGS_RELWITHDEBINFO} ${CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO}")
+set(CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL "${ANDROID_LINKER_FLAGS_MINSIZEREL} ${CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL}")
+set(CMAKE_MODULE_LINKER_FLAGS_MINSIZEREL "${ANDROID_LINKER_FLAGS_MINSIZEREL} ${CMAKE_MODULE_LINKER_FLAGS_MINSIZEREL}")
+set(CMAKE_EXE_LINKER_FLAGS_MINSIZEREL    "${ANDROID_LINKER_FLAGS_MINSIZEREL} ${CMAKE_EXE_LINKER_FLAGS_MINSIZEREL}")
+
+# Compatibility for read-only variables.
+# Read-only variables for compatibility with the other toolchain file.
+# We'll keep these around for the existing projects that still use them.
+# TODO: All of the variables here have equivalents in our standard set of
+# configurable variables, so we can remove these once most of our users migrate
+# to those variables.
+set(ANDROID_NATIVE_API_LEVEL ${ANDROID_PLATFORM_LEVEL})
+if(ANDROID_ALLOW_UNDEFINED_SYMBOLS)
+  set(ANDROID_SO_UNDEFINED TRUE)
+else()
+  set(ANDROID_NO_UNDEFINED TRUE)
+endif()
+set(ANDROID_FUNCTION_LEVEL_LINKING TRUE)
+set(ANDROID_GOLD_LINKER TRUE)
+set(ANDROID_NOEXECSTACK TRUE)
+set(ANDROID_RELRO TRUE)
+if(ANDROID_ARM_MODE STREQUAL arm)
+  set(ANDROID_FORCE_ARM_BUILD TRUE)
+endif()
+if(ANDROID_CPP_FEATURES MATCHES "rtti"
+    AND ANDROID_CPP_FEATURES MATCHES "exceptions")
+  set(ANDROID_STL_FORCE_FEATURES TRUE)
+endif()
+if(ANDROID_CCACHE)
+  set(NDK_CCACHE "${ANDROID_CCACHE}")
+endif()
+if(ANDROID_TOOLCHAIN STREQUAL clang)
+  set(ANDROID_TOOLCHAIN_NAME ${ANDROID_TOOLCHAIN_NAME}-clang)
+else()
+  set(ANDROID_TOOLCHAIN_NAME ${ANDROID_TOOLCHAIN_NAME}-4.9)
+endif()
+set(ANDROID_NDK_HOST_X64 TRUE)
+set(ANDROID_NDK_LAYOUT RELEASE)
+if(ANDROID_ABI STREQUAL armeabi-v7a)
+  set(ARMEABI_V7A TRUE)
+  if(ANDROID_ARM_NEON)
+    set(NEON TRUE)
+  endif()
+elseif(ANDROID_ABI STREQUAL arm64-v8a)
+  set(ARM64_V8A TRUE)
+elseif(ANDROID_ABI STREQUAL x86)
+  set(X86 TRUE)
+elseif(ANDROID_ABI STREQUAL x86_64)
+  set(X86_64 TRUE)
+elseif(ANDROID_ABI STREQUAL riscv64)
+  set(RISCV64 TRUE)
+endif()
+set(ANDROID_NDK_HOST_SYSTEM_NAME ${ANDROID_HOST_TAG})
+set(ANDROID_NDK_ABI_NAME ${ANDROID_ABI})
+set(ANDROID_NDK_RELEASE r${ANDROID_NDK_REVISION})
+set(ANDROID_ARCH_NAME ${ANDROID_SYSROOT_ABI})
+set(TOOL_OS_SUFFIX ${ANDROID_TOOLCHAIN_SUFFIX})
+if(ANDROID_TOOLCHAIN STREQUAL clang)
+  set(ANDROID_COMPILER_IS_CLANG TRUE)
+endif()
+
+# CMake 3.7+ compatibility.
+if (CMAKE_VERSION VERSION_GREATER 3.7.0)
+  set(CMAKE_ANDROID_NDK ${ANDROID_NDK})
+  set(CMAKE_ANDROID_NDK_TOOLCHAIN_VERSION clang)
+
+  set(CMAKE_ANDROID_STL_TYPE ${ANDROID_STL})
+
+  if(ANDROID_ABI MATCHES "^armeabi(-v7a)?$")
+    set(CMAKE_ANDROID_ARM_NEON ${ANDROID_ARM_NEON})
+    set(CMAKE_ANDROID_ARM_MODE ${ANDROID_ARM_MODE})
+  endif()
+
+  # https://github.com/android/ndk/issues/861
+  if(ANDROID_ABI STREQUAL armeabi-v7a)
+    set(CMAKE_ANDROID_ARCH arm)
+  elseif(ANDROID_ABI STREQUAL arm64-v8a)
+    set(CMAKE_ANDROID_ARCH arm64)
+  elseif(ANDROID_ABI STREQUAL x86)
+    set(CMAKE_ANDROID_ARCH x86)
+  elseif(ANDROID_ABI STREQUAL x86_64)
+    set(CMAKE_ANDROID_ARCH x86_64)
+  elseif(ANDROID_ABI STREQUAL riscv64)
+    set(CMAKE_ANDROID_ARCH riscv64)
+  endif()
+
+  # https://github.com/android/ndk/issues/1012
+  set(CMAKE_ASM_ANDROID_TOOLCHAIN_MACHINE "${ANDROID_TOOLCHAIN_NAME}")
+  set(CMAKE_C_ANDROID_TOOLCHAIN_MACHINE "${ANDROID_TOOLCHAIN_NAME}")
+  set(CMAKE_CXX_ANDROID_TOOLCHAIN_MACHINE "${ANDROID_TOOLCHAIN_NAME}")
+
+  set(CMAKE_ASM_ANDROID_TOOLCHAIN_SUFFIX "${ANDROID_TOOLCHAIN_SUFFIX}")
+  set(CMAKE_C_ANDROID_TOOLCHAIN_SUFFIX "${ANDROID_TOOLCHAIN_SUFFIX}")
+  set(CMAKE_CXX_ANDROID_TOOLCHAIN_SUFFIX "${ANDROID_TOOLCHAIN_SUFFIX}")
+endif()
--- a/Android/android-ndk-r27d/build/cmake/android.toolchain.cmake
+++ b/Android/android-ndk-r27d/build/cmake/android.toolchain.cmake
@ -0,0 +1,291 @@
+# Copyright (C) 2016 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Configurable variables.
+# Modeled after the ndk-build system.
+# For any variables defined in:
+#         https://developer.android.com/ndk/guides/android_mk.html
+#         https://developer.android.com/ndk/guides/application_mk.html
+# if it makes sense for CMake, then replace LOCAL, APP, or NDK with ANDROID, and
+# we have that variable below.
+#
+# ANDROID_TOOLCHAIN
+# ANDROID_ABI
+# ANDROID_PLATFORM
+# ANDROID_STL
+# ANDROID_PIE
+# ANDROID_CPP_FEATURES
+# ANDROID_ALLOW_UNDEFINED_SYMBOLS
+# ANDROID_ARM_MODE
+# ANDROID_DISABLE_FORMAT_STRING_CHECKS
+# ANDROID_CCACHE
+# ANDROID_SANITIZE
+
+cmake_minimum_required(VERSION 3.12.0)
+
+# CMake invokes the toolchain file twice during the first build, but only once
+# during subsequent rebuilds. This was causing the various flags to be added
+# twice on the first build, and on a rebuild ninja would see only one set of the
+# flags and rebuild the world.
+# https://github.com/android-ndk/ndk/issues/323
+if(ANDROID_NDK_TOOLCHAIN_INCLUDED)
+  return()
+endif(ANDROID_NDK_TOOLCHAIN_INCLUDED)
+set(ANDROID_NDK_TOOLCHAIN_INCLUDED true)
+
+if(DEFINED ANDROID_USE_LEGACY_TOOLCHAIN_FILE)
+  set(_USE_LEGACY_TOOLCHAIN_FILE ${ANDROID_USE_LEGACY_TOOLCHAIN_FILE})
+else()
+  # Default to the legacy toolchain file to avoid changing the behavior of
+  # CMAKE_CXX_FLAGS. See https://github.com/android/ndk/issues/1693.
+  set(_USE_LEGACY_TOOLCHAIN_FILE true)
+endif()
+if(_USE_LEGACY_TOOLCHAIN_FILE)
+  include("${CMAKE_CURRENT_LIST_DIR}/android-legacy.toolchain.cmake")
+  return()
+endif()
+
+# Android NDK path
+get_filename_component(ANDROID_NDK_EXPECTED_PATH
+    "${CMAKE_CURRENT_LIST_DIR}/../.." ABSOLUTE)
+if(NOT ANDROID_NDK)
+  set(CMAKE_ANDROID_NDK "${ANDROID_NDK_EXPECTED_PATH}")
+else()
+  # Allow the user to specify their own NDK path, but emit a warning. This is an
+  # uncommon use case, but helpful if users want to use a bleeding edge
+  # toolchain file with a stable NDK.
+  # https://github.com/android-ndk/ndk/issues/473
+  get_filename_component(ANDROID_NDK "${ANDROID_NDK}" ABSOLUTE)
+  if(NOT "${ANDROID_NDK}" STREQUAL "${ANDROID_NDK_EXPECTED_PATH}")
+    message(WARNING "Using custom NDK path (ANDROID_NDK is set): ${ANDROID_NDK}")
+  endif()
+  set(CMAKE_ANDROID_NDK ${ANDROID_NDK})
+endif()
+unset(ANDROID_NDK_EXPECTED_PATH)
+file(TO_CMAKE_PATH "${CMAKE_ANDROID_NDK}" CMAKE_ANDROID_NDK)
+
+# Android NDK revision
+# Possible formats:
+# * r16, build 1234: 16.0.1234
+# * r16b, build 1234: 16.1.1234
+# * r16 beta 1, build 1234: 16.0.1234-beta1
+#
+# Canary builds are not specially marked.
+file(READ "${CMAKE_ANDROID_NDK}/source.properties" ANDROID_NDK_SOURCE_PROPERTIES)
+
+set(ANDROID_NDK_REVISION_REGEX
+  "^Pkg\\.Desc = Android NDK\nPkg\\.Revision = ([0-9]+)\\.([0-9]+)\\.([0-9]+)(-beta([0-9]+))?")
+if(NOT ANDROID_NDK_SOURCE_PROPERTIES MATCHES "${ANDROID_NDK_REVISION_REGEX}")
+  message(SEND_ERROR "Failed to parse Android NDK revision: ${CMAKE_ANDROID_NDK}/source.properties.\n${ANDROID_NDK_SOURCE_PROPERTIES}")
+endif()
+
+set(ANDROID_NDK_MAJOR "${CMAKE_MATCH_1}")
+set(ANDROID_NDK_MINOR "${CMAKE_MATCH_2}")
+set(ANDROID_NDK_BUILD "${CMAKE_MATCH_3}")
+set(ANDROID_NDK_BETA "${CMAKE_MATCH_5}")
+if(ANDROID_NDK_BETA STREQUAL "")
+  set(ANDROID_NDK_BETA "0")
+endif()
+set(ANDROID_NDK_REVISION
+  "${ANDROID_NDK_MAJOR}.${ANDROID_NDK_MINOR}.${ANDROID_NDK_BUILD}${CMAKE_MATCH_4}")
+
+# Touch toolchain variable to suppress "unused variable" warning.
+# This happens if CMake is invoked with the same command line the second time.
+if(CMAKE_TOOLCHAIN_FILE)
+endif()
+
+# Determine the ABI.
+if(NOT CMAKE_ANDROID_ARCH_ABI)
+  if(ANDROID_ABI STREQUAL "armeabi-v7a with NEON")
+    set(CMAKE_ANDROID_ARCH_ABI armeabi-v7a)
+  elseif(ANDROID_ABI)
+    set(CMAKE_ANDROID_ARCH_ABI ${ANDROID_ABI})
+  elseif(ANDROID_TOOLCHAIN_NAME MATCHES "^arm-linux-androideabi-")
+    set(CMAKE_ANDROID_ARCH_ABI armeabi-v7a)
+  elseif(ANDROID_TOOLCHAIN_NAME MATCHES "^aarch64-linux-android-")
+    set(CMAKE_ANDROID_ARCH_ABI arm64-v8a)
+  elseif(ANDROID_TOOLCHAIN_NAME MATCHES "^x86-")
+    set(CMAKE_ANDROID_ARCH_ABI x86)
+  elseif(ANDROID_TOOLCHAIN_NAME MATCHES "^x86_64-")
+    set(CMAKE_ANDROID_ARCH_ABI x86_64)
+  elseif(ANDROID_TOOLCHAIN_NAME MATCHES "^riscv64-")
+    set(CMAKE_ANDROID_ARCH_ABI riscv64)
+  else()
+    set(CMAKE_ANDROID_ARCH_ABI armeabi-v7a)
+  endif()
+endif()
+
+if(DEFINED ANDROID_ARM_NEON AND NOT ANDROID_ARM_NEON)
+  message(FATAL_ERROR "Disabling Neon is no longer supported")
+endif()
+
+if(CMAKE_ANDROID_ARCH_ABI STREQUAL "armeabi-v7a")
+  set(CMAKE_ANDROID_ARM_NEON TRUE)
+
+  if(NOT DEFINED CMAKE_ANDROID_ARM_MODE)
+    if(DEFINED ANDROID_FORCE_ARM_BUILD)
+      set(CMAKE_ANDROID_ARM_MODE ${ANDROID_FORCE_ARM_BUILD})
+    elseif(DEFINED ANDROID_ARM_MODE)
+      if(ANDROID_ARM_MODE STREQUAL "arm")
+        set(CMAKE_ANDROID_ARM_MODE TRUE)
+      elseif(ANDROID_ARM_MODE STREQUAL "thumb")
+        set(CMAKE_ANDROID_ARM_MODE FALSE)
+      else()
+        message(FATAL_ERROR "Invalid Android ARM mode: ${ANDROID_ARM_MODE}.")
+      endif()
+    endif()
+  endif()
+endif()
+
+# PIE is supported on all currently supported Android releases, but it is not
+# supported with static executables, so we still provide ANDROID_PIE as an
+# escape hatch for those.
+if(NOT DEFINED CMAKE_POSITION_INDEPENDENT_CODE)
+  if(DEFINED ANDROID_PIE)
+    set(CMAKE_POSITION_INDEPENDENT_CODE ${ANDROID_PIE})
+  elseif(DEFINED ANDROID_APP_PIE)
+    set(CMAKE_POSITION_INDEPENDENT_CODE ${ANDROID_APP_PIE})
+  else()
+    set(CMAKE_POSITION_INDEPENDENT_CODE TRUE)
+  endif()
+endif()
+
+# Default values for configurable variables.
+if(NOT ANDROID_TOOLCHAIN)
+  set(ANDROID_TOOLCHAIN clang)
+elseif(ANDROID_TOOLCHAIN STREQUAL gcc)
+  message(FATAL_ERROR "GCC is no longer supported. See "
+  "https://android.googlesource.com/platform/ndk/+/master/docs/ClangMigration.md.")
+endif()
+
+if(ANDROID_NATIVE_API_LEVEL AND NOT ANDROID_PLATFORM)
+  if(ANDROID_NATIVE_API_LEVEL MATCHES "^android-[0-9]+$")
+    set(ANDROID_PLATFORM ${ANDROID_NATIVE_API_LEVEL})
+  elseif(ANDROID_NATIVE_API_LEVEL MATCHES "^[0-9]+$")
+    set(ANDROID_PLATFORM android-${ANDROID_NATIVE_API_LEVEL})
+  endif()
+endif()
+include(${CMAKE_ANDROID_NDK}/build/cmake/adjust_api_level.cmake)
+adjust_api_level("${ANDROID_PLATFORM}" CMAKE_SYSTEM_VERSION)
+
+if(NOT DEFINED CMAKE_ANDROID_STL_TYPE AND DEFINED ANDROID_STL)
+  set(CMAKE_ANDROID_STL_TYPE ${ANDROID_STL})
+endif()
+
+if("hwaddress" IN_LIST ANDROID_SANITIZE AND "${CMAKE_ANDROID_STL_TYPE}" STREQUAL "c++_static")
+  message(FATAL_ERROR "\
+  hwaddress does not support c++_static. Use system or c++_shared.")
+endif()
+
+if("${CMAKE_ANDROID_STL_TYPE}" STREQUAL "gnustl_shared" OR
+    "${CMAKE_ANDROID_STL_TYPE}" STREQUAL "gnustl_static" OR
+    "${CMAKE_ANDROID_STL_TYPE}" STREQUAL "stlport_shared" OR
+    "${CMAKE_ANDROID_STL_TYPE}" STREQUAL "stlport_static")
+  message(FATAL_ERROR "\
+${CMAKE_ANDROID_STL_TYPE} is no longer supported. Please switch to either c++_shared \
+or c++_static. See https://developer.android.com/ndk/guides/cpp-support.html \
+for more information.")
+endif()
+
+# Standard cross-compiling stuff.
+set(CMAKE_SYSTEM_NAME Android)
+
+# STL.
+if(ANDROID_STL)
+  set(CMAKE_ANDROID_STL_TYPE ${ANDROID_STL})
+endif()
+
+if(NDK_CCACHE AND NOT ANDROID_CCACHE)
+  set(ANDROID_CCACHE "${NDK_CCACHE}")
+endif()
+if(ANDROID_CCACHE)
+  set(CMAKE_C_COMPILER_LAUNCHER   "${ANDROID_CCACHE}")
+  set(CMAKE_CXX_COMPILER_LAUNCHER "${ANDROID_CCACHE}")
+endif()
+
+# Configuration specific flags.
+if(ANDROID_STL_FORCE_FEATURES AND NOT DEFINED ANDROID_CPP_FEATURES)
+  set(ANDROID_CPP_FEATURES "rtti exceptions")
+endif()
+
+if(ANDROID_CPP_FEATURES)
+  separate_arguments(ANDROID_CPP_FEATURES)
+  foreach(feature ${ANDROID_CPP_FEATURES})
+    if(NOT ${feature} MATCHES "^(rtti|exceptions|no-rtti|no-exceptions)$")
+      message(FATAL_ERROR "Invalid Android C++ feature: ${feature}.")
+    endif()
+    if(${feature} STREQUAL "rtti")
+      set(CMAKE_ANDROID_RTTI TRUE)
+    endif()
+    if(${feature} STREQUAL "no-rtti")
+      set(CMAKE_ANDROID_RTTI FALSE)
+    endif()
+    if(${feature} STREQUAL "exceptions")
+      set(CMAKE_ANDROID_EXCEPTIONS TRUE)
+    endif()
+    if(${feature} STREQUAL "no-exceptions")
+      set(CMAKE_ANDROID_EXCEPTIONS FALSE)
+    endif()
+  endforeach()
+  string(REPLACE ";" " " ANDROID_CPP_FEATURES "${ANDROID_CPP_FEATURES}")
+endif()
+
+# Export configurable variables for the try_compile() command.
+set(CMAKE_TRY_COMPILE_PLATFORM_VARIABLES
+  ANDROID_ABI
+  ANDROID_ALLOW_UNDEFINED_SYMBOLS
+  ANDROID_ARM_MODE
+  ANDROID_ARM_NEON
+  ANDROID_CCACHE
+  ANDROID_CPP_FEATURES
+  ANDROID_DISABLE_FORMAT_STRING_CHECKS
+  ANDROID_PIE
+  ANDROID_PLATFORM
+  ANDROID_STL
+  ANDROID_TOOLCHAIN
+  ANDROID_USE_LEGACY_TOOLCHAIN_FILE
+  ANDROID_SANITIZE
+)
+
+if(DEFINED ANDROID_NO_UNDEFINED AND NOT DEFINED ANDROID_ALLOW_UNDEFINED_SYMBOLS)
+  if(ANDROID_NO_UNDEFINED)
+    set(ANDROID_ALLOW_UNDEFINED_SYMBOLS FALSE)
+  else()
+    set(ANDROID_ALLOW_UNDEFINED_SYMBOLS TRUE)
+  endif()
+endif()
+if(DEFINED ANDROID_SO_UNDEFINED AND NOT DEFINED ANDROID_ALLOW_UNDEFINED_SYMBOLS)
+  set(ANDROID_ALLOW_UNDEFINED_SYMBOLS "${ANDROID_SO_UNDEFINED}")
+endif()
+
+# Exports compatible variables defined in exports.cmake.
+set(_ANDROID_EXPORT_COMPATIBILITY_VARIABLES TRUE)
+
+if(CMAKE_HOST_SYSTEM_NAME STREQUAL Linux)
+  set(ANDROID_HOST_TAG linux-x86_64)
+elseif(CMAKE_HOST_SYSTEM_NAME STREQUAL Darwin)
+  set(ANDROID_HOST_TAG darwin-x86_64)
+elseif(CMAKE_HOST_SYSTEM_NAME STREQUAL Windows)
+  set(ANDROID_HOST_TAG windows-x86_64)
+endif()
+
+# Toolchain.
+set(ANDROID_TOOLCHAIN_ROOT
+  "${CMAKE_ANDROID_NDK}/toolchains/llvm/prebuilt/${ANDROID_HOST_TAG}")
+
+# NB: This variable causes CMake to automatically pass --sysroot to the
+# toolchain. Studio currently relies on this to recognize Android builds. If
+# this variable is removed, ensure that flag is still passed.
+# TODO: Teach Studio to recognize Android builds based on --target.
+set(CMAKE_SYSROOT "${ANDROID_TOOLCHAIN_ROOT}/sysroot")
--- a/Android/android-ndk-r27d/build/cmake/compiler_id.cmake
+++ b/Android/android-ndk-r27d/build/cmake/compiler_id.cmake
@ -0,0 +1,4 @@
+# The file is automatically generated when the NDK is built.
+set(CMAKE_ASM_COMPILER_VERSION 18.0.4)
+set(CMAKE_C_COMPILER_VERSION 18.0.4)
+set(CMAKE_CXX_COMPILER_VERSION 18.0.4)
--- a/Android/android-ndk-r27d/build/cmake/exports.cmake
+++ b/Android/android-ndk-r27d/build/cmake/exports.cmake
@ -0,0 +1,81 @@
+# Copyright (C) 2020 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Read-only variables for compatibility with the other toolchain file.
+# We'll keep these around for the existing projects that still use them.
+# TODO: All of the variables here have equivalents in the standard set of
+# cmake configurable variables, so we can remove these once most of our
+# users migrate to those variables.
+
+# From legacy toolchain file.
+set(ANDROID_NDK "${CMAKE_ANDROID_NDK}")
+set(ANDROID_ABI "${CMAKE_ANDROID_ARCH_ABI}")
+set(ANDROID_COMPILER_IS_CLANG TRUE)
+set(ANDROID_PLATFORM "android-${CMAKE_SYSTEM_VERSION}")
+set(ANDROID_PLATFORM_LEVEL "${CMAKE_SYSTEM_VERSION}")
+set(ANDROID_ARM_NEON TRUE)
+if(CMAKE_ANDROID_ARM_MODE)
+  set(ANDROID_ARM_MODE "arm")
+  set(ANDROID_FORCE_ARM_BUILD TRUE)
+else()
+  set(ANDROID_ARM_MODE "thumb")
+endif()
+set(ANDROID_ARCH_NAME "${CMAKE_ANDROID_ARCH}")
+set(ANDROID_LLVM_TRIPLE "${CMAKE_ANDROID_ARCH_LLVM_TRIPLE}${CMAKE_SYSTEM_VERSION}")
+set(ANDROID_TOOLCHAIN_ROOT "${CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED}")
+set(ANDROID_HOST_TAG "${CMAKE_ANDROID_NDK_TOOLCHAIN_HOST_TAG}")
+set(ANDROID_HOST_PREBUILTS "${CMAKE_ANDROID_NDK}/prebuilt/${CMAKE_ANDROID_NDK_TOOLCHAIN_HOST_TAG}")
+set(ANDROID_AR "${CMAKE_AR}")
+set(ANDROID_RANLIB "${CMAKE_RANLIB}")
+set(ANDROID_STRIP "${CMAKE_STRIP}")
+if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")
+  set(ANDROID_TOOLCHAIN_SUFFIX ".exe")
+endif()
+
+# From other toolchain file.
+set(ANDROID_NATIVE_API_LEVEL "${ANDROID_PLATFORM_LEVEL}")
+if(ANDROID_ALLOW_UNDEFINED_SYMBOLS)
+  set(ANDROID_SO_UNDEFINED TRUE)
+else()
+  set(ANDROID_NO_UNDEFINED TRUE)
+endif()
+set(ANDROID_FUNCTION_LEVEL_LINKING TRUE)
+set(ANDROID_GOLD_LINKER TRUE)
+set(ANDROID_NOEXECSTACK TRUE)
+set(ANDROID_RELRO TRUE)
+if(ANDROID_CPP_FEATURES MATCHES "rtti"
+    AND ANDROID_CPP_FEATURES MATCHES "exceptions")
+  set(ANDROID_STL_FORCE_FEATURES TRUE)
+endif()
+if(ANDROID_CCACHE)
+  set(NDK_CCACHE "${ANDROID_CCACHE}")
+endif()
+set(ANDROID_NDK_HOST_X64 TRUE)
+set(ANDROID_NDK_LAYOUT RELEASE)
+if(CMAKE_ANDROID_ARCH_ABI STREQUAL "armeabi-v7a")
+  set(ARMEABI_V7A TRUE)
+  set(NEON TRUE)
+elseif(CMAKE_ANDROID_ARCH_ABI STREQUAL "arm64-v8a")
+  set(ARM64_V8A TRUE)
+elseif(CMAKE_ANDROID_ARCH_ABI STREQUAL "x86")
+  set(X86 TRUE)
+elseif(CMAKE_ANDROID_ARCH_ABI STREQUAL "x86_64")
+  set(X86_64 TRUE)
+elseif(CMAKE_ANDROID_ARCH_ABI STREQUAL "riscv64")
+  set(RISCV64 TRUE)
+endif()
+set(ANDROID_NDK_HOST_SYSTEM_NAME "${ANDROID_HOST_TAG}")
+set(ANDROID_NDK_ABI_NAME "${CMAKE_ANDROID_ARCH_ABI}")
+set(ANDROID_NDK_RELEASE "r${ANDROID_NDK_REVISION}")
+set(TOOL_OS_SUFFIX "${ANDROID_TOOLCHAIN_SUFFIX}")
--- a/Android/android-ndk-r27d/build/cmake/flags.cmake
+++ b/Android/android-ndk-r27d/build/cmake/flags.cmake
@ -0,0 +1,121 @@
+# Copyright (C) 2020 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This file will be included directly by cmake. It is used to provide
+# additional cflags / ldflags.
+
+cmake_minimum_required(VERSION 3.12.0)
+
+set(_ANDROID_NDK_INIT_CFLAGS)
+set(_ANDROID_NDK_INIT_CFLAGS_DEBUG)
+set(_ANDROID_NDK_INIT_CFLAGS_RELEASE)
+set(_ANDROID_NDK_INIT_LDFLAGS)
+set(_ANDROID_NDK_INIT_LDFLAGS_EXE)
+
+# Generic flags.
+string(APPEND _ANDROID_NDK_INIT_CFLAGS
+  " -DANDROID"
+  " -fdata-sections"
+  " -ffunction-sections"
+  " -funwind-tables"
+  " -fstack-protector-strong"
+  " -no-canonical-prefixes")
+
+if(ANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES)
+  string(APPEND _ANDROID_NDK_INIT_CFLAGS " -D__BIONIC_NO_PAGE_SIZE_MACRO")
+  if(ANDROID_ABI STREQUAL arm64-v8a OR ANDROID_ABI STREQUAL x86_64)
+    string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -Wl,-z,max-page-size=16384")
+  endif()
+endif()
+
+if(ANDROID_WEAK_API_DEFS)
+  string(APPEND _ANDROID_NDK_INIT_CFLAGS
+    " -D__ANDROID_UNAVAILABLE_SYMBOLS_ARE_WEAK__"
+    " -Werror=unguarded-availability")
+endif()
+
+if("hwaddress" IN_LIST ANDROID_SANITIZE)
+  string(APPEND _ANDROID_NDK_INIT_CFLAGS " -fsanitize=hwaddress -fno-omit-frame-pointer")
+  string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -fsanitize=hwaddress")
+endif()
+
+if("memtag" IN_LIST ANDROID_SANITIZE)
+  string(APPEND _ANDROID_NDK_INIT_CFLAGS " -fsanitize=memtag-stack -fno-omit-frame-pointer")
+  string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -fsanitize=memtag-stack,memtag-heap -fsanitize-memtag-mode=sync")
+  if(CMAKE_ANDROID_ARCH_ABI STREQUAL "arm64-v8a")
+    string(APPEND _ANDROID_NDK_INIT_CFLAGS " -march=armv8-a+memtag")
+    string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -march=armv8-a+memtag")
+  endif()
+endif()
+
+string(APPEND _ANDROID_NDK_INIT_CFLAGS_DEBUG " -fno-limit-debug-info")
+
+# If we're using LLD we need to use a slower build-id algorithm to work around
+# the old version of LLDB in Android Studio, which doesn't understand LLD's
+# default hash ("fast").
+#
+# https://github.com/android/ndk/issues/885
+string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -Wl,--build-id=sha1")
+
+if(CMAKE_SYSTEM_VERSION LESS 30)
+  # https://github.com/android/ndk/issues/1196
+  # https://github.com/android/ndk/issues/1589
+  string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -Wl,--no-rosegment")
+endif()
+
+if (NOT ANDROID_ALLOW_UNDEFINED_VERSION_SCRIPT_SYMBOLS)
+  string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -Wl,--no-undefined-version")
+endif()
+
+string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -Wl,--fatal-warnings")
+# This should only be set for release modes, but CMake doesn't provide a way for
+# us to be that specific in the new toolchain file.
+# https://github.com/android/ndk/issues/1813
+string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -Wl,--gc-sections")
+string(APPEND _ANDROID_NDK_INIT_LDFLAGS_EXE " -Wl,--gc-sections")
+
+# Toolchain and ABI specific flags.
+if(CMAKE_ANDROID_ARCH_ABI STREQUAL x86 AND CMAKE_SYSTEM_VERSION LESS 24)
+  # http://b.android.com/222239
+  # http://b.android.com/220159 (internal http://b/31809417)
+  # x86 devices have stack alignment issues.
+  string(APPEND _ANDROID_NDK_INIT_CFLAGS " -mstackrealign")
+endif()
+
+string(APPEND _ANDROID_NDK_INIT_CFLAGS " -D_FORTIFY_SOURCE=2")
+
+if(CMAKE_ANDROID_ARCH_ABI MATCHES "armeabi")
+  # Clang does not set this up properly when using -fno-integrated-as.
+  # https://github.com/android-ndk/ndk/issues/906
+  string(APPEND _ANDROID_NDK_INIT_CFLAGS " -march=armv7-a")
+  if(NOT CMAKE_ANDROID_ARM_MODE)
+    string(APPEND _ANDROID_NDK_INIT_CFLAGS " -mthumb")
+  endif()
+endif()
+
+# CMake automatically forwards all compiler flags to the linker, and clang
+# doesn't like having -Wa flags being used for linking. To prevent CMake from
+# doing this would require meddling with the CMAKE_<LANG>_COMPILE_OBJECT rules,
+# which would get quite messy.
+string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -Qunused-arguments")
+
+if(ANDROID_DISABLE_FORMAT_STRING_CHECKS)
+  string(APPEND _ANDROID_NDK_INIT_CFLAGS " -Wno-error=format-security")
+else()
+  string(APPEND _ANDROID_NDK_INIT_CFLAGS " -Wformat -Werror=format-security")
+endif()
+
+if(NOT ANDROID_ALLOW_UNDEFINED_SYMBOLS)
+  string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -Wl,--no-undefined")
+endif()
--- a/Android/android-ndk-r27d/build/cmake/hooks/post/Android-Clang.cmake
+++ b/Android/android-ndk-r27d/build/cmake/hooks/post/Android-Clang.cmake
@ -0,0 +1,16 @@
+# Copyright (C) 2020 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This is a hook file that will be included by cmake at the end of
+# Modules/Platform/Android-Clang.cmake.
--- a/Android/android-ndk-r27d/build/cmake/hooks/post/Android-Determine.cmake
+++ b/Android/android-ndk-r27d/build/cmake/hooks/post/Android-Determine.cmake
@ -0,0 +1,22 @@
+# Copyright (C) 2020 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This is a hook file that will be included by cmake at the end of
+# Modules/Platform/Android-Determine.cmake.
+
+# android.toolchain.cmake may set this to export old variables.
+if(_ANDROID_EXPORT_COMPATIBILITY_VARIABLES)
+  file(READ "${CMAKE_ANDROID_NDK}/build/cmake/exports.cmake" _EXPORTS)
+  string(APPEND CMAKE_SYSTEM_CUSTOM_CODE "\n${_EXPORTS}\n")
+endif()
--- a/Android/android-ndk-r27d/build/cmake/hooks/post/Android-Initialize.cmake
+++ b/Android/android-ndk-r27d/build/cmake/hooks/post/Android-Initialize.cmake
@ -0,0 +1,16 @@
+# Copyright (C) 2020 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This is a hook file that will be included by cmake at the end of
+# Modules/Platform/Android-Initialize.cmake.
--- a/Android/android-ndk-r27d/build/cmake/hooks/post/Android.cmake
+++ b/Android/android-ndk-r27d/build/cmake/hooks/post/Android.cmake
@ -0,0 +1,16 @@
+# Copyright (C) 2020 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This is a hook file that will be included by cmake at the end of
+# Modules/Platform/Android.cmake.
--- a/Android/android-ndk-r27d/build/cmake/hooks/post/Determine-Compiler.cmake
+++ b/Android/android-ndk-r27d/build/cmake/hooks/post/Determine-Compiler.cmake
@ -0,0 +1,16 @@
+# Copyright (C) 2020 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This is a hook file that will be included by cmake at the end of
+# Modules/Platform/Android/Determine-Compiler.cmake.
--- a/Android/android-ndk-r27d/build/cmake/hooks/pre/Android-Clang.cmake
+++ b/Android/android-ndk-r27d/build/cmake/hooks/pre/Android-Clang.cmake
@ -0,0 +1,16 @@
+# Copyright (C) 2020 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This is a hook file that will be included by cmake at the beginning of
+# Modules/Platform/Android-Clang.cmake.
--- a/Android/android-ndk-r27d/build/cmake/hooks/pre/Android-Determine.cmake
+++ b/Android/android-ndk-r27d/build/cmake/hooks/pre/Android-Determine.cmake
@ -0,0 +1,16 @@
+# Copyright (C) 2020 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This is a hook file that will be included by cmake at the beginning of
+# Modules/Platform/Android-Determine.cmake.
--- a/Android/android-ndk-r27d/build/cmake/hooks/pre/Android-Initialize.cmake
+++ b/Android/android-ndk-r27d/build/cmake/hooks/pre/Android-Initialize.cmake
@ -0,0 +1,16 @@
+# Copyright (C) 2020 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This is a hook file that will be included by cmake at the beginning of
+# Modules/Platform/Android-Initialize.cmake.
--- a/Android/android-ndk-r27d/build/cmake/hooks/pre/Android.cmake
+++ b/Android/android-ndk-r27d/build/cmake/hooks/pre/Android.cmake
@ -0,0 +1,16 @@
+# Copyright (C) 2020 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This is a hook file that will be included by cmake at the beginning of
+# Modules/Platform/Android.cmake.
--- a/Android/android-ndk-r27d/build/cmake/hooks/pre/Determine-Compiler.cmake
+++ b/Android/android-ndk-r27d/build/cmake/hooks/pre/Determine-Compiler.cmake
@ -0,0 +1,42 @@
+# Copyright (C) 2020 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This is a hook file that will be included by cmake at the beginning of
+# Modules/Platform/Android/Determine-Compiler.cmake.
+
+# Skip hook for the legacy toolchain workflow.
+if(CMAKE_SYSTEM_VERSION EQUAL 1)
+  return()
+endif()
+
+if(${CMAKE_VERSION} VERSION_LESS "3.22.0")
+  # If we don't explicitly set the target CMake will ID the compiler using the
+  # default target, causing MINGW to be defined when a Windows host is used.
+  # https://github.com/android/ndk/issues/1581
+  # https://gitlab.kitware.com/cmake/cmake/-/issues/22647
+  if(CMAKE_ANDROID_ARCH_ABI STREQUAL armeabi-v7a)
+    set(ANDROID_LLVM_TRIPLE armv7-none-linux-androideabi)
+  elseif(CMAKE_ANDROID_ARCH_ABI STREQUAL arm64-v8a)
+    set(ANDROID_LLVM_TRIPLE aarch64-none-linux-android)
+  elseif(CMAKE_ANDROID_ARCH_ABI STREQUAL x86)
+    set(ANDROID_LLVM_TRIPLE i686-none-linux-android)
+  elseif(CMAKE_ANDROID_ARCH_ABI STREQUAL x86_64)
+    set(ANDROID_LLVM_TRIPLE x86_64-none-linux-android)
+  else()
+    message(FATAL_ERROR "Invalid Android ABI: ${ANDROID_ABI}.")
+  endif()
+  set(CMAKE_ASM_COMPILER_TARGET "${ANDROID_LLVM_TRIPLE}${CMAKE_SYSTEM_VERSION}")
+  set(CMAKE_C_COMPILER_TARGET "${ANDROID_LLVM_TRIPLE}${CMAKE_SYSTEM_VERSION}")
+  set(CMAKE_CXX_COMPILER_TARGET "${ANDROID_LLVM_TRIPLE}${CMAKE_SYSTEM_VERSION}")
+endif()
--- a/Android/android-ndk-r27d/build/cmake/platforms.cmake
+++ b/Android/android-ndk-r27d/build/cmake/platforms.cmake
@ -0,0 +1,23 @@
+set(NDK_MIN_PLATFORM_LEVEL "21")
+set(NDK_MAX_PLATFORM_LEVEL "35")
+set(NDK_PLATFORM_ALIAS_20 "android-19")
+set(NDK_PLATFORM_ALIAS_25 "android-24")
+set(NDK_PLATFORM_ALIAS_J "android-16")
+set(NDK_PLATFORM_ALIAS_J-MR1 "android-17")
+set(NDK_PLATFORM_ALIAS_J-MR2 "android-18")
+set(NDK_PLATFORM_ALIAS_K "android-19")
+set(NDK_PLATFORM_ALIAS_L "android-21")
+set(NDK_PLATFORM_ALIAS_L-MR1 "android-22")
+set(NDK_PLATFORM_ALIAS_M "android-23")
+set(NDK_PLATFORM_ALIAS_N "android-24")
+set(NDK_PLATFORM_ALIAS_N-MR1 "android-24")
+set(NDK_PLATFORM_ALIAS_O "android-26")
+set(NDK_PLATFORM_ALIAS_O-MR1 "android-27")
+set(NDK_PLATFORM_ALIAS_P "android-28")
+set(NDK_PLATFORM_ALIAS_Q "android-29")
+set(NDK_PLATFORM_ALIAS_R "android-30")
+set(NDK_PLATFORM_ALIAS_S "android-31")
+set(NDK_PLATFORM_ALIAS_Sv2 "android-32")
+set(NDK_PLATFORM_ALIAS_Tiramisu "android-33")
+set(NDK_PLATFORM_ALIAS_UpsideDownCake "android-34")
+set(NDK_PLATFORM_ALIAS_VanillaIceCream "android-35")
--- a/Android/android-ndk-r27d/build/cmake/system_libs.cmake
+++ b/Android/android-ndk-r27d/build/cmake/system_libs.cmake
@ -0,0 +1 @@
+set(NDK_SYSTEM_LIBS "libEGL.so;libGLESv1_CM.so;libGLESv2.so;libGLESv3.so;libOpenMAXAL.so;libOpenSLES.so;libaaudio.so;libamidi.so;libandroid.so;libbinder_ndk.so;libc.so;libcamera2ndk.so;libdl.so;libicu.so;libjnigraphics.so;liblog.so;libm.so;libmediandk.so;libnativehelper.so;libnativewindow.so;libneuralnetworks.so;libstdc++.so;libsync.so;libvulkan.so;libz.so")
--- a/Android/android-ndk-r27d/build/core/abis.mk
+++ b/Android/android-ndk-r27d/build/core/abis.mk
@ -0,0 +1,40 @@
+NDK_DEFAULT_ABIS := arm64-v8a armeabi-v7a x86 x86_64
+NDK_DEPRECATED_ABIS := 
+NDK_KNOWN_DEVICE_ABI32S := armeabi-v7a x86
+NDK_KNOWN_DEVICE_ABI64S := arm64-v8a riscv64 x86_64
+NDK_KNOWN_DEVICE_ABIS := arm64-v8a armeabi-v7a riscv64 x86 x86_64
+NDK_ABI_armeabi-v7a_PROC := armv7-a
+NDK_ABI_armeabi-v7a_ARCH := arm
+NDK_ABI_armeabi-v7a_TRIPLE := arm-linux-androideabi
+NDK_ABI_armeabi-v7a_LLVM_TRIPLE := armv7-none-linux-androideabi
+NDK_ABI_armeabi-v7a_MIN_OS_VERSION := 21
+NDK_PROC_armv7-a_ABI := armeabi-v7a
+NDK_ARCH_arm_ABI := armeabi-v7a
+NDK_ABI_arm64-v8a_PROC := aarch64
+NDK_ABI_arm64-v8a_ARCH := arm64
+NDK_ABI_arm64-v8a_TRIPLE := aarch64-linux-android
+NDK_ABI_arm64-v8a_LLVM_TRIPLE := aarch64-none-linux-android
+NDK_ABI_arm64-v8a_MIN_OS_VERSION := 21
+NDK_PROC_aarch64_ABI := arm64-v8a
+NDK_ARCH_arm64_ABI := arm64-v8a
+NDK_ABI_riscv64_PROC := riscv64
+NDK_ABI_riscv64_ARCH := riscv64
+NDK_ABI_riscv64_TRIPLE := riscv64-linux-android
+NDK_ABI_riscv64_LLVM_TRIPLE := riscv64-none-linux-android
+NDK_ABI_riscv64_MIN_OS_VERSION := 35
+NDK_PROC_riscv64_ABI := riscv64
+NDK_ARCH_riscv64_ABI := riscv64
+NDK_ABI_x86_PROC := i686
+NDK_ABI_x86_ARCH := x86
+NDK_ABI_x86_TRIPLE := i686-linux-android
+NDK_ABI_x86_LLVM_TRIPLE := i686-none-linux-android
+NDK_ABI_x86_MIN_OS_VERSION := 21
+NDK_PROC_i686_ABI := x86
+NDK_ARCH_x86_ABI := x86
+NDK_ABI_x86_64_PROC := x86_64
+NDK_ABI_x86_64_ARCH := x86_64
+NDK_ABI_x86_64_TRIPLE := x86_64-linux-android
+NDK_ABI_x86_64_LLVM_TRIPLE := x86_64-none-linux-android
+NDK_ABI_x86_64_MIN_OS_VERSION := 21
+NDK_PROC_x86_64_ABI := x86_64
+NDK_ARCH_x86_64_ABI := x86_64
--- a/Android/android-ndk-r27d/build/core/add-application.mk
+++ b/Android/android-ndk-r27d/build/core/add-application.mk
@ -0,0 +1,247 @@
+# Copyright (C) 2009 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# this script is used to record an application definition in the
+# NDK build system, before performing any build whatsoever.
+#
+# It is included repeatedly from build/core/main.mk and expects a
+# variable named '_application_mk' which points to a given Application.mk
+# file that will be included here. The latter must define a few variables
+# to describe the application to the build system, and the rest of the
+# code here will perform book-keeping and basic checks
+#
+
+$(call assert-defined, _application_mk _app)
+$(call ndk_log,Parsing $(_application_mk))
+
+$(call clear-vars, $(NDK_APP_VARS))
+
+# Check that NDK_DEBUG is properly defined. If it is
+# the only valid states are: undefined, 0, 1, false and true
+#
+# We set APP_DEBUG to <undefined>, 'true' or 'false'.
+#
+APP_DEBUG := $(strip $(NDK_DEBUG))
+ifeq ($(APP_DEBUG),0)
+  APP_DEBUG:= false
+endif
+ifeq ($(APP_DEBUG),1)
+  APP_DEBUG := true
+endif
+ifdef APP_DEBUG
+  ifneq (,$(filter-out true false,$(APP_DEBUG)))
+    $(call __ndk_warning,NDK_DEBUG is defined to the unsupported value '$(NDK_DEBUG)', will be ignored!)
+  endif
+endif
+
+include $(_application_mk)
+
+$(call check-required-vars,$(NDK_APP_VARS_REQUIRED),$(_application_mk))
+
+_map := NDK_APP.$(_app)
+
+# strip the 'lib' prefix in front of APP_MODULES modules
+APP_MODULES := $(call strip-lib-prefix,$(APP_MODULES))
+
+APP_PROJECT_PATH := $(strip $(APP_PROJECT_PATH))
+ifndef APP_PROJECT_PATH
+    APP_PROJECT_PATH := $(NDK_PROJECT_PATH)
+endif
+
+include $(BUILD_SYSTEM)/setup-app-platform.mk
+
+# Check that the value of APP_ABI corresponds to known ABIs
+# 'all' is a special case that means 'all supported ABIs'
+#
+# It will be handled in setup-app.mk. We can't hope to change
+# the value of APP_ABI is the user enforces it on the command-line
+# with a call like:  ndk-build APP_ABI=all
+#
+# Because GNU Make makes the APP_ABI variable read-only (any assignments
+# to it will be ignored)
+#
+APP_ABI := $(subst $(comma),$(space),$(strip $(APP_ABI)))
+ifndef APP_ABI
+    APP_ABI := $(NDK_DEFAULT_ABIS)
+endif
+
+# If APP_BUILD_SCRIPT is defined, check that the file exists.
+# If undefined, look in $(APP_PROJECT_PATH)/jni/Android.mk
+#
+APP_BUILD_SCRIPT := $(strip $(APP_BUILD_SCRIPT))
+ifdef APP_BUILD_SCRIPT
+    _build_script := $(strip $(wildcard $(APP_BUILD_SCRIPT)))
+    ifndef _build_script
+        $(call __ndk_info,Your APP_BUILD_SCRIPT points to an unknown file: $(APP_BUILD_SCRIPT))
+        $(call __ndk_error,Aborting...)
+    endif
+    APP_BUILD_SCRIPT := $(_build_script)
+    $(call ndk_log,  Using build script $(APP_BUILD_SCRIPT))
+else
+    ifeq (null,$(APP_PROJECT_PATH))
+      $(call __ndk_info,NDK_PROJECT_PATH==null.  Please explicitly set APP_BUILD_SCRIPT.)
+      $(call __ndk_error,Aborting.)
+    endif
+
+    _build_script := $(strip $(wildcard $(APP_PROJECT_PATH)/jni/Android.mk))
+    ifndef _build_script
+        $(call __ndk_info,There is no Android.mk under $(APP_PROJECT_PATH)/jni)
+        $(call __ndk_info,If this is intentional, please define APP_BUILD_SCRIPT to point)
+        $(call __ndk_info,to a valid NDK build script.)
+        $(call __ndk_error,Aborting...)
+    endif
+    APP_BUILD_SCRIPT := $(_build_script)
+    $(call ndk_log,  Defaulted to APP_BUILD_SCRIPT=$(APP_BUILD_SCRIPT))
+endif
+
+# Determine whether the application should be debuggable.
+# - If APP_DEBUG is set to 'true', then it always should.
+# - If APP_DEBUG is set to 'false', then it never should
+# - Otherwise, extract the android:debuggable attribute from the manifest.
+#
+ifdef APP_DEBUG
+  APP_DEBUGGABLE := $(APP_DEBUG)
+  ifeq ($(NDK_LOG),1)
+    ifeq ($(APP_DEBUG),true)
+      $(call ndk_log,Application '$(_app)' forced debuggable through NDK_DEBUG)
+    else
+      $(call ndk_log,Application '$(_app)' forced *not* debuggable through NDK_DEBUG)
+    endif
+  endif
+else
+  # NOTE: To make unit-testing simpler, handle the case where there is no manifest.
+  APP_DEBUGGABLE := false
+  ifdef APP_MANIFEST
+    APP_DEBUGGABLE := $(shell $(HOST_PYTHON) $(BUILD_PY)/extract_manifest.py debuggable $(call host-path,$(APP_MANIFEST)))
+  endif
+  ifeq ($(NDK_LOG),1)
+    ifeq ($(APP_DEBUGGABLE),true)
+      $(call ndk_log,Application '$(_app)' *is* debuggable)
+    else
+      $(call ndk_log,Application '$(_app)' is not debuggable)
+    endif
+  endif
+endif
+
+# LOCAL_BUILD_MODE will be either release or debug
+#
+# If APP_OPTIM is defined in the Application.mk, just use this.
+#
+# Otherwise, set to 'debug' if android:debuggable is set to TRUE,
+# and to 'release' if not.
+#
+ifneq ($(APP_OPTIM),)
+    # check that APP_OPTIM, if defined, is either 'release' or 'debug'
+    $(if $(filter-out release debug,$(APP_OPTIM)),\
+        $(call __ndk_info, The APP_OPTIM defined in $(_application_mk) must only be 'release' or 'debug')\
+        $(call __ndk_error,Aborting)\
+    )
+    $(call ndk_log,Selecting optimization mode through Application.mk: $(APP_OPTIM))
+else
+    ifeq ($(APP_DEBUGGABLE),true)
+        $(call ndk_log,Selecting debug optimization mode (app is debuggable))
+        APP_OPTIM := debug
+    else
+        $(call ndk_log,Selecting release optimization mode (app is not debuggable))
+        APP_OPTIM := release
+    endif
+endif
+
+APP_CFLAGS := $(strip $(APP_CFLAGS))
+APP_CONLYFLAGS := $(strip $(APP_CONLYFLAGS))
+APP_CPPFLAGS := $(strip $(APP_CPPFLAGS))
+APP_CXXFLAGS := $(strip $(APP_CXXFLAGS))
+APP_ASFLAGS := $(strip $(APP_ASFLAGS))
+APP_ASMFLAGS := $(strip $(APP_ASMFLAGS))
+APP_LDFLAGS  := $(strip $(APP_LDFLAGS))
+
+# Check that APP_STL is defined. If not, use the default value (system)
+# otherwise, check that the name is correct.
+APP_STL := $(strip $(APP_STL))
+ifndef APP_STL
+    APP_STL := system
+else
+    ifneq ($(filter $(APP_STL),gnustl_static gnustl_shared stlport_static stlport_shared),)
+        $(call __ndk_error,APP_STL $(APP_STL) is no longer supported. Please \
+            switch to either c++_static or c++_shared. See \
+            https://developer.android.com/ndk/guides/cpp-support.html for more \
+            information.)
+    endif
+    $(call ndk-stl-check,$(APP_STL))
+endif
+
+# wrap.sh files can be specified in the user's Application.mk in either an
+# ABI-generic (APP_WRAP_SH) or ABI-specific (APP_WRAP_SH_x86, etc) fashion.
+# These two approaches cannot be combined; if any ABI-specific wrap.sh files are
+# specified then it is an error to also specify an ABI-generic one.
+#
+# After this block, only the ABI-specific values should be checked; if there is
+# an ABI-generic script specified the ABI-specific variables will be populated
+# with the generic script.
+NDK_NO_USER_WRAP_SH := true
+ifneq ($(APP_WRAP_SH),)
+    NDK_NO_USER_WRAP_SH := false
+endif
+
+NDK_HAVE_ABI_SPECIFIC_WRAP_SH := false
+$(foreach _abi,$(NDK_ALL_ABIS),\
+    $(if $(APP_WRAP_SH_$(_abi)),\
+        $(eval NDK_HAVE_ABI_SPECIFIC_WRAP_SH := true)))
+
+ifeq ($(NDK_HAVE_ABI_SPECIFIC_WRAP_SH),true)
+    # It is an error to have both ABI-specific and ABI-generic wrap.sh files
+    # specified.
+    ifneq ($(APP_WRAP_SH),)
+        $(call __ndk_error,Found both ABI-specific and ABI-generic APP_WRAP_SH \
+            directives. Must use either all ABI-specific or only ABI-generic.)
+    endif
+    NDK_NO_USER_WRAP_SH := false
+else
+    # If we have no ABI-specific wrap.sh files but we *do* have an ABI-generic
+    # one, install the generic one for all ABIs.
+    $(foreach _abi,$(NDK_ALL_ABIS),\
+        $(eval APP_WRAP_SH_$(_abi) := $(APP_WRAP_SH)))
+endif
+
+# Stripping can be configured both at the app (APP_STRIP_MODE) and module level
+# (LOCAL_STRIP_MODE). The module setting always overrides the application
+# setting.
+#
+# This value is passed as-is as the flag to the strip command except when it is
+# set to the special value "none". If set to "none", the binary will not be
+# stripped at all.
+ifeq ($(APP_STRIP_MODE),)
+    # The strip command is only used for shared libraries and executables. It is
+    # thus safe to use --strip-unneeded, which is only dangerous when applied to
+    # static libraries or object files.
+    APP_STRIP_MODE := --strip-unneeded
+endif
+
+$(if $(call get,$(_map),defined),\
+  $(call __ndk_info,Weird, the application $(_app) is already defined by $(call get,$(_map),defined))\
+  $(call __ndk_error,Aborting)\
+)
+
+$(call set,$(_map),defined,$(_application_mk))
+
+# Record all app-specific variable definitions
+$(foreach __name,$(NDK_APP_VARS),\
+  $(call set,$(_map),$(__name),$($(__name)))\
+)
+
+# Record the Application.mk for debugging
+$(call set,$(_map),Application.mk,$(_application_mk))
+
+NDK_ALL_APPS += $(_app)
--- a/Android/android-ndk-r27d/build/core/add-toolchain.mk
+++ b/Android/android-ndk-r27d/build/core/add-toolchain.mk
@ -0,0 +1,85 @@
+# Copyright (C) 2009 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# this script is included repeatedly by main.mk to add a new toolchain
+# definition to the NDK build system.
+#
+# '_config_mk' must be defined as the path of a toolchain
+# configuration file (config.mk) that will be included here.
+#
+$(call assert-defined, _config_mk)
+
+# The list of variables that must or may be defined
+# by the toolchain configuration file
+#
+NDK_TOOLCHAIN_VARS_REQUIRED := TOOLCHAIN_ABIS TOOLCHAIN_ARCH
+NDK_TOOLCHAIN_VARS_OPTIONAL :=
+
+# Clear variables that are supposed to be defined by the config file
+$(call clear-vars,$(NDK_TOOLCHAIN_VARS_REQUIRED))
+$(call clear-vars,$(NDK_TOOLCHAIN_VARS_OPTIONAL))
+
+# Include the config file
+include $(_config_mk)
+
+ifeq ($(TOOLCHAIN_ABIS)$(TOOLCHAIN_ARCH),)
+# Ignore if both TOOLCHAIN_ABIS and TOOLCHAIN_ARCH are not defined
+else
+
+# Check that the proper variables were defined
+$(call check-required-vars,$(NDK_TOOLCHAIN_VARS_REQUIRED),$(_config_mk))
+
+# Check that the file didn't do something stupid
+$(call assert-defined, _config_mk)
+
+# Now record the toolchain-specific information
+_dir  := $(patsubst %/,%,$(dir $(_config_mk)))
+_name := $(notdir $(_dir))
+_arch := $(TOOLCHAIN_ARCH)
+_abis := $(TOOLCHAIN_ABIS)
+
+_toolchain := NDK_TOOLCHAIN.$(_name)
+
+# check that the toolchain name is unique
+$(if $(strip $($(_toolchain).defined)),\
+  $(call __ndk_error,Toolchain $(_name) defined in $(_parent) is\
+                     already defined in $(NDK_TOOLCHAIN.$(_name).defined)))
+
+$(_toolchain).defined := $(_toolchain_config)
+$(_toolchain).arch    := $(_arch)
+$(_toolchain).abis    := $(_abis)
+$(_toolchain).setup   := $(wildcard $(_dir)/setup.mk)
+
+$(if $(strip $($(_toolchain).setup)),,\
+  $(call __ndk_error, Toolchain $(_name) lacks a setup.mk in $(_dir)))
+
+NDK_ALL_TOOLCHAINS += $(_name)
+NDK_ALL_ARCHS      += $(_arch)
+NDK_ALL_ABIS       += $(_abis)
+
+# NDK_ABI.<abi>.toolchains records the list of toolchains that support
+# a given ABI
+#
+$(foreach _abi,$(_abis),\
+    $(eval NDK_ABI.$(_abi).toolchains += $(_name)) \
+    $(eval NDK_ABI.$(_abi).arch := $(sort $(NDK_ABI.$(_abi).arch) $(_arch)))\
+)
+
+NDK_ARCH.$(_arch).toolchains += $(_name)
+NDK_ARCH.$(_arch).abis := $(sort $(NDK_ARCH.$(_arch).abis) $(_abis))
+
+endif
+
+# done
--- a/Android/android-ndk-r27d/build/core/build-all.mk
+++ b/Android/android-ndk-r27d/build/core/build-all.mk
@ -0,0 +1,125 @@
+# Copyright (C) 2009-2010 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+#
+# This script is used to build all wanted NDK binaries. It is included
+# by several scripts.
+#
+
+# ensure that the following variables are properly defined
+$(call assert-defined,NDK_APPS NDK_APP_OUT)
+
+# ====================================================================
+#
+# Prepare the build for parsing Android.mk files
+#
+# ====================================================================
+
+# These phony targets are used to control various stages of the build
+.PHONY: \
+    all \
+    host_libraries \
+    host_executables \
+    installed_modules \
+    executables libraries \
+    static_libraries \
+    shared_libraries \
+    clean clean-objs-dir \
+    clean-executables clean-libraries \
+    clean-installed-modules \
+    clean-installed-binaries \
+    clang_tidy_rules \
+
+# These macros are used in Android.mk to include the corresponding
+# build script that will parse the LOCAL_XXX variable definitions.
+#
+CLEAR_VARS                := $(BUILD_SYSTEM)/clear-vars.mk
+BUILD_HOST_EXECUTABLE     := $(BUILD_SYSTEM)/build-host-executable.mk
+BUILD_HOST_STATIC_LIBRARY := $(BUILD_SYSTEM)/build-host-static-library.mk
+BUILD_STATIC_LIBRARY      := $(BUILD_SYSTEM)/build-static-library.mk
+BUILD_SHARED_LIBRARY      := $(BUILD_SYSTEM)/build-shared-library.mk
+BUILD_EXECUTABLE          := $(BUILD_SYSTEM)/build-executable.mk
+PREBUILT_SHARED_LIBRARY   := $(BUILD_SYSTEM)/prebuilt-shared-library.mk
+PREBUILT_STATIC_LIBRARY   := $(BUILD_SYSTEM)/prebuilt-static-library.mk
+
+# this is the list of directories containing dependency information
+# generated during the build. It will be updated by build scripts
+# when module definitions are parsed.
+#
+ALL_DEPENDENCY_DIRS :=
+
+# this is the list of all generated files that we would need to clean
+ALL_HOST_EXECUTABLES      :=
+ALL_HOST_STATIC_LIBRARIES :=
+ALL_STATIC_LIBRARIES      :=
+ALL_SHARED_LIBRARIES      :=
+ALL_EXECUTABLES           :=
+
+WANTED_INSTALLED_MODULES  :=
+
+# the first rule
+all: installed_modules host_libraries host_executables clang_tidy_rules
+
+
+$(foreach _app,$(NDK_APPS),\
+  $(eval include $(BUILD_SYSTEM)/setup-app.mk)\
+)
+
+ifeq (,$(strip $(WANTED_INSTALLED_MODULES)))
+    ifneq (,$(strip $(NDK_APP_MODULES)))
+        $(call __ndk_warning,WARNING: No modules to build, your APP_MODULES definition is probably incorrect!)
+    else
+        $(call __ndk_warning,WARNING: There are no modules to build in this project!)
+    endif
+endif
+
+# ====================================================================
+#
+# Now finish the build preparation with a few rules that depend on
+# what has been effectively parsed and recorded previously
+#
+# ====================================================================
+
+clean: clean-intermediates clean-installed-binaries
+
+distclean: clean
+
+installed_modules: clean-installed-binaries libraries $(WANTED_INSTALLED_MODULES)
+host_libraries: $(HOST_STATIC_LIBRARIES)
+host_executables: $(HOST_EXECUTABLES)
+
+# clang-tidy rules add themselves as dependencies of this phony rule in
+# ev-clang-tidy.
+clang_tidy_rules:
+
+static_libraries: $(STATIC_LIBRARIES)
+shared_libraries: $(SHARED_LIBRARIES)
+executables: $(EXECUTABLES)
+
+ifeq ($(GEN_COMPILE_COMMANDS_DB),true)
+all: $(COMPILE_COMMANDS_JSON)
+endif
+
+libraries: static_libraries shared_libraries
+
+clean-host-intermediates:
+	$(hide) $(call host-rm,$(HOST_EXECUTABLES) $(HOST_STATIC_LIBRARIES))
+
+clean-intermediates: clean-host-intermediates
+	$(hide) $(call host-rm,$(EXECUTABLES) $(STATIC_LIBRARIES) $(SHARED_LIBRARIES))
+	
+# include dependency information
+ALL_DEPENDENCY_DIRS := $(patsubst %/,%,$(sort $(ALL_DEPENDENCY_DIRS)))
+-include $(wildcard $(ALL_DEPENDENCY_DIRS:%=%/*.d))
--- a/Android/android-ndk-r27d/build/core/build-binary.mk
+++ b/Android/android-ndk-r27d/build/core/build-binary.mk
@ -0,0 +1,714 @@
+# Copyright (C) 2008 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# Check that LOCAL_MODULE is defined, then restore its LOCAL_XXXX values
+$(call assert-defined,LOCAL_MODULE)
+$(call module-restore-locals,$(LOCAL_MODULE))
+
+# As in build-module.mk, eval sucks. Manually unstash the flags variations to
+# preserve -Werror=#warnings.
+LOCAL_ASFLAGS := $(__ndk_modules.$(LOCAL_MODULE).ASFLAGS)
+LOCAL_ASMFLAGS := $(__ndk_modules.$(LOCAL_MODULE).ASMFLAGS)
+LOCAL_CFLAGS := $(__ndk_modules.$(LOCAL_MODULE).CFLAGS)
+LOCAL_CLANG_TIDY_FLAGS := $(__ndk_modules.$(LOCAL_MODULE).CLANG_TIDY_FLAGS)
+LOCAL_CONLYFLAGS := $(__ndk_modules.$(LOCAL_MODULE).CONLYFLAGS)
+LOCAL_CPPFLAGS := $(__ndk_modules.$(LOCAL_MODULE).CPPFLAGS)
+LOCAL_CXXFLAGS := $(__ndk_modules.$(LOCAL_MODULE).CXXFLAGS)
+LOCAL_LDFLAGS := $(__ndk_modules.$(LOCAL_MODULE).LDFLAGS)
+
+# For now, only support target (device-specific modules).
+# We may want to introduce support for host modules in the future
+# but that is too experimental for now.
+#
+my := POISONED
+
+# LOCAL_MAKEFILE must also exist and name the Android.mk that
+# included the module build script.
+#
+$(call assert-defined,LOCAL_MAKEFILE LOCAL_BUILD_SCRIPT LOCAL_BUILT_MODULE)
+
+# A list of LOCAL_XXX variables that are ignored for static libraries.
+# Print a warning if they are present inside a module definition to let
+# the user know this won't do what he/she expects.
+not_in_static_libs := \
+    LOCAL_LDFLAGS \
+    LOCAL_LDLIBS \
+    LOCAL_ALLOW_UNDEFINED_SYMBOLS
+
+ifeq ($(call module-get-class,$(LOCAL_MODULE)),STATIC_LIBRARY)
+$(foreach _notvar,$(not_in_static_libs),\
+    $(if $(strip $($(_notvar))),\
+        $(call __ndk_info,WARNING:$(LOCAL_MAKEFILE):$(LOCAL_MODULE): $(_notvar) is always ignored for static libraries)\
+    )\
+)
+endif
+
+# Some developers like to add library names (e.g. -lfoo) to LOCAL_LDLIBS
+# and LOCAL_LDFLAGS directly. This is very fragile and can lead to broken
+# builds and other nasty surprises, because it doesn't tell ndk-build
+# that the corresponding module depends on these files. Emit a warning
+# when we detect this case.
+libs_in_ldflags := $(filter -l% %.so %.a,$(LOCAL_LDLIBS) $(LOCAL_LDFLAGS))
+
+# Since the above will glob anything ending in .so or .a, we need to filter out
+# any cases of -Wl,--exclude-libs since we use that to hide symbols in STLs.
+libs_in_ldflags := \
+    $(filter-out -Wl$(comma)--exclude-libs$(comma)%,$(libs_in_ldflags))
+
+include $(BUILD_SYSTEM)/system_libs.mk
+
+# The only way to statically link libomp.a is with
+# `-Wl,-Bstatic -lomp -Wl,-Bdynamic`, so we need to accept `-lomp`.
+# https://github.com/android-ndk/ndk/issues/1028
+NDK_SYSTEM_LIBS += libomp.so
+
+libs_in_ldflags := $(filter-out $(NDK_SYSTEM_LIBS:lib%.so=-l%),$(libs_in_ldflags))
+
+ifneq (,$(strip $(libs_in_ldflags)))
+  $(call __ndk_info,WARNING:$(LOCAL_MAKEFILE):$(LOCAL_MODULE): non-system libraries in linker flags: $(libs_in_ldflags))
+  $(call __ndk_info,    This is likely to result in incorrect builds. Try using LOCAL_STATIC_LIBRARIES)
+  $(call __ndk_info,    or LOCAL_SHARED_LIBRARIES instead to list the library dependencies of the)
+  $(call __ndk_info,    current module)
+endif
+
+include $(BUILD_SYSTEM)/import-locals.mk
+
+# Check for LOCAL_THIN_ARCHIVE / APP_THIN_ARCHIVE and print a warning if
+# it is defined for non-static library modules.
+thin_archive := $(strip $(LOCAL_THIN_ARCHIVE))
+ifdef thin_archive
+ifneq (STATIC_LIBRARY,$(call module-get-class,$(LOCAL_MODULE)))
+    $(call __ndk_info,WARNING:$(LOCAL_MAKEFILE):$(LOCAL_MODULE): LOCAL_THIN_ARCHIVE is for building static libraries)
+endif
+endif
+
+ifndef thin_archive
+    thin_archive := $(strip $(NDK_APP_THIN_ARCHIVE))
+endif
+# Print a warning if the value is not 'true', 'false' or empty.
+ifneq (,$(filter-out true false,$(thin_archive)))
+    $(call __ndk_info,WARNING:$(LOCAL_MAKEFILE):$(LOCAL_MODULE): Invalid LOCAL_THIN_ARCHIVE value '$(thin_archive)' ignored!)
+    thin_archive :=
+endif
+
+#
+# Ensure that 'make <module>' and 'make clean-<module>' work
+#
+.PHONY: $(LOCAL_MODULE)
+$(LOCAL_MODULE): $(LOCAL_BUILT_MODULE)
+
+cleantarget := clean-$(LOCAL_MODULE)-$(TARGET_ARCH_ABI)
+.PHONY: $(cleantarget)
+clean: $(cleantarget)
+
+$(cleantarget): PRIVATE_ABI         := $(TARGET_ARCH_ABI)
+$(cleantarget): PRIVATE_MODULE      := $(LOCAL_MODULE)
+ifneq ($(LOCAL_BUILT_MODULE_NOT_COPIED),true)
+$(cleantarget): PRIVATE_CLEAN_FILES := $(LOCAL_BUILT_MODULE) \
+                                       $(LOCAL_OBJS_DIR)
+else
+$(cleantarget): PRIVATE_CLEAN_FILES := $(LOCAL_OBJS_DIR)
+endif
+$(cleantarget)::
+	$(call host-echo-build-step,$(PRIVATE_ABI),Clean) "$(PRIVATE_MODULE) [$(PRIVATE_ABI)]"
+	$(hide) $(call host-rmdir,$(PRIVATE_CLEAN_FILES))
+
+# list of generated object files
+LOCAL_OBJECTS :=
+
+# always define ANDROID when building binaries
+#
+LOCAL_CFLAGS := -DANDROID $(LOCAL_CFLAGS)
+
+ifeq ($(APP_SUPPORT_FLEXIBLE_PAGE_SIZES),true)
+  LOCAL_CFLAGS += -D__BIONIC_NO_PAGE_SIZE_MACRO
+  ifneq (,$(filter $(APP_ABI),arm64-v8a x86_64))
+    LOCAL_LDFLAGS += -Wl,-z,max-page-size=16384
+  endif
+endif
+
+#
+# Add the default system shared libraries to the build
+#
+ifeq ($(LOCAL_SYSTEM_SHARED_LIBRARIES),none)
+  LOCAL_SHARED_LIBRARIES += $(TARGET_DEFAULT_SYSTEM_SHARED_LIBRARIES)
+else
+  LOCAL_SHARED_LIBRARIES += $(LOCAL_SYSTEM_SHARED_LIBRARIES)
+endif
+
+#
+# Check LOCAL_CPP_EXTENSION
+#
+bad_cpp_extensions := $(strip $(filter-out .%,$(LOCAL_CPP_EXTENSION)))
+ifdef bad_cpp_extensions
+    $(call __ndk_info,WARNING: Invalid LOCAL_CPP_EXTENSION values: $(bad_cpp_extensions))
+    LOCAL_CPP_EXTENSION := $(filter $(bad_cpp_extensions),$(LOCAL_CPP_EXTENSIONS))
+endif
+LOCAL_CPP_EXTENSION := $(strip $(LOCAL_CPP_EXTENSION))
+ifeq ($(LOCAL_CPP_EXTENSION),)
+  # Match the default GCC C++ extensions.
+  LOCAL_CPP_EXTENSION := $(default-c++-extensions)
+endif
+
+include $(BUILD_SYSTEM)/stl.mk
+
+#
+# If LOCAL_ALLOW_UNDEFINED_SYMBOLS is not true, the linker will allow the generation
+# of a binary that uses undefined symbols.
+#
+ifneq ($(LOCAL_ALLOW_UNDEFINED_SYMBOLS),true)
+  LOCAL_LDFLAGS += $(TARGET_NO_UNDEFINED_LDFLAGS)
+endif
+
+# We enable fatal linker warnings by default.
+# If LOCAL_DISABLE_FATAL_LINKER_WARNINGS is true, we don't enable this check.
+ifneq ($(LOCAL_DISABLE_FATAL_LINKER_WARNINGS),true)
+  LOCAL_LDFLAGS += -Wl,--fatal-warnings
+endif
+
+# By default, we protect against format string vulnerabilities
+# If LOCAL_DISABLE_FORMAT_STRING_CHECKS is true, we disable the protections.
+ifeq ($(LOCAL_DISABLE_FORMAT_STRING_CHECKS),true)
+  LOCAL_CFLAGS += $(TARGET_DISABLE_FORMAT_STRING_CFLAGS)
+else
+  LOCAL_CFLAGS += $(TARGET_FORMAT_STRING_CFLAGS)
+endif
+
+# Enable branch protection for arm64-v8a
+LOCAL_BRANCH_PROTECTION := $(strip $(LOCAL_BRANCH_PROTECTION))
+ifdef LOCAL_BRANCH_PROTECTION
+    ifeq ($(TARGET_ARCH_ABI),arm64-v8a)
+        LOCAL_CFLAGS += -mbranch-protection=$(LOCAL_BRANCH_PROTECTION)
+    endif
+endif
+
+# http://b.android.com/222239
+# http://b.android.com/220159 (internal http://b/31809417)
+# x86 devices have stack alignment issues.
+ifeq ($(TARGET_ARCH_ABI),x86)
+    ifneq (,$(call lt,$(APP_PLATFORM_LEVEL),24))
+        LOCAL_CFLAGS += -mstackrealign
+    endif
+endif
+
+ifneq ($(LOCAL_ALLOW_UNDEFINED_VERSION_SCRIPT_SYMBOLS),true)
+    LOCAL_LDFLAGS += -Wl,--no-undefined-version
+endif
+
+#
+# The original Android build system allows you to use the .arm prefix
+# to a source file name to indicate that it should be defined in either
+# 'thumb' or 'arm' mode, depending on the value of LOCAL_ARM_MODE
+#
+# First, check LOCAL_ARM_MODE, it should be empty, 'thumb' or 'arm'
+# We make the default 'thumb'
+#
+LOCAL_ARM_MODE := $(strip $(LOCAL_ARM_MODE))
+ifdef LOCAL_ARM_MODE
+  ifneq ($(words $(LOCAL_ARM_MODE)),1)
+      $(call __ndk_info,   LOCAL_ARM_MODE in $(LOCAL_MAKEFILE) must be one word, not '$(LOCAL_ARM_MODE)')
+      $(call __ndk_error, Aborting)
+  endif
+  # check that LOCAL_ARM_MODE is defined to either 'arm' or 'thumb'
+  $(if $(filter-out thumb arm, $(LOCAL_ARM_MODE)),\
+      $(call __ndk_info,   LOCAL_ARM_MODE must be defined to either 'arm' or 'thumb' in $(LOCAL_MAKEFILE) not '$(LOCAL_ARM_MODE)')\
+      $(call __ndk_error, Aborting)\
+  )
+  my_link_arm_mode := $(LOCAL_ARM_MODE)
+else
+  my_link_arm_mode := thumb
+endif
+
+# As a special case, the original Android build system
+# allows one to specify that certain source files can be
+# forced to build in ARM mode by using a '.arm' suffix
+# after the extension, e.g.
+#
+#  LOCAL_SRC_FILES := foo.c.arm
+#
+# to build source file $(LOCAL_PATH)/foo.c as ARM
+#
+
+$(call clear-all-src-tags)
+
+# Historically the NDK supported both Neon and non-Neon as variants of the
+# armeabi-v7a ABI. These were practically two ABIs but the distinction was not
+# official (APKs did not have separate libraries for Neon and non-Neon devices).
+# As of NDK r24 non-Neon devices are no longer supported, so any options opting
+# *in* to Neon are ignored, and options explicitly opting out of Neon are an
+# error. Users that choose a non-Neon -mfpu in their CFLAGS will receive no
+# diagnostic.
+
+LOCAL_ARM_NEON := $(strip $(LOCAL_ARM_NEON))
+
+ifeq ($(LOCAL_ARM_NEON),false)
+    $(call __ndk_error,Building non-Neon code is no longer supported.)
+endif
+
+LOCAL_SRC_FILES := $(LOCAL_SRC_FILES:%.neon=%)
+
+# strip the .arm suffix from LOCAL_SRC_FILES
+# and tag the relevant sources with the 'arm' tag
+#
+arm_sources     := $(filter %.arm,$(LOCAL_SRC_FILES))
+arm_sources     := $(arm_sources:%.arm=%)
+thumb_sources   := $(filter-out %.arm,$(LOCAL_SRC_FILES))
+LOCAL_SRC_FILES := $(LOCAL_SRC_FILES:%.arm=%)
+
+ifeq ($(LOCAL_ARM_MODE),arm)
+    arm_sources := $(LOCAL_SRC_FILES)
+    # tag the precompiled header with 'arm' tag if it exists
+    ifneq (,$(LOCAL_PCH))
+        $(call tag-src-files,$(LOCAL_PCH),arm)
+    endif
+endif
+ifeq ($(LOCAL_ARM_MODE),thumb)
+    arm_sources := $(empty)
+endif
+$(call tag-src-files,$(arm_sources),arm)
+
+# tag debug if APP_OPTIM is 'debug'
+#
+ifeq ($(APP_OPTIM),debug)
+    $(call tag-src-files,$(LOCAL_SRC_FILES),debug)
+    ifneq (,$(LOCAL_PCH))
+        $(call tag-src-files,$(LOCAL_PCH),debug)
+    endif
+endif
+
+# add PCH to LOCAL_SRC_FILES so that TARGET-process-src-files-tags could process it
+ifneq (,$(LOCAL_PCH))
+    LOCAL_SRC_FILES += $(LOCAL_PCH)
+endif
+
+# Process all source file tags to determine toolchain-specific
+# target compiler flags, and text.
+#
+$(call TARGET-process-src-files-tags)
+
+# now remove PCH from LOCAL_SRC_FILES to prevent getting NDK warning about
+# unsupported source file extensions
+ifneq (,$(LOCAL_PCH))
+    LOCAL_SRC_FILES := $(filter-out $(LOCAL_PCH),$(LOCAL_SRC_FILES))
+endif
+
+# only call dump-src-file-tags during debugging
+#$(dump-src-file-tags)
+
+LOCAL_DEPENDENCY_DIRS :=
+
+# all_source_patterns contains the list of filename patterns that correspond
+# to source files recognized by our build system
+ifneq ($(filter x86 x86_64, $(TARGET_ARCH_ABI)),)
+all_source_extensions := .c .s .S .asm $(LOCAL_CPP_EXTENSION)
+else
+all_source_extensions := .c .s .S $(LOCAL_CPP_EXTENSION)
+endif
+all_source_patterns   := $(foreach _ext,$(all_source_extensions),%$(_ext))
+all_cpp_patterns      := $(foreach _ext,$(LOCAL_CPP_EXTENSION),%$(_ext))
+
+unknown_sources := $(strip $(filter-out $(all_source_patterns),$(LOCAL_SRC_FILES)))
+ifdef unknown_sources
+    $(call __ndk_info,WARNING: Unsupported source file extensions in $(LOCAL_MAKEFILE) for module $(LOCAL_MODULE))
+    $(call __ndk_info,  $(unknown_sources))
+endif
+
+# LOCAL_OBJECTS will list all object files corresponding to the sources
+# listed in LOCAL_SRC_FILES, in the *same* order.
+#
+LOCAL_OBJECTS := $(LOCAL_SRC_FILES)
+$(foreach _ext,$(all_source_extensions),\
+    $(eval LOCAL_OBJECTS := $$(LOCAL_OBJECTS:%$(_ext)=%$$(TARGET_OBJ_EXTENSION)))\
+)
+LOCAL_OBJECTS := $(filter %$(TARGET_OBJ_EXTENSION),$(LOCAL_OBJECTS))
+LOCAL_OBJECTS := $(subst ../,__/,$(LOCAL_OBJECTS))
+LOCAL_OBJECTS := $(subst :,_,$(LOCAL_OBJECTS))
+LOCAL_OBJECTS := $(foreach _obj,$(LOCAL_OBJECTS),$(LOCAL_OBJS_DIR)/$(_obj))
+
+# If the module has any kind of C++ features, enable them in LOCAL_CPPFLAGS
+#
+ifneq (,$(call module-has-c++-features,$(LOCAL_MODULE),rtti))
+    LOCAL_CPPFLAGS += -frtti
+endif
+ifneq (,$(call module-has-c++-features,$(LOCAL_MODULE),exceptions))
+    LOCAL_CPPFLAGS += -fexceptions
+endif
+
+# Build PCH
+
+get-pch-name = $(strip \
+    $(subst ../,__/,\
+        $(eval __pch := $1)\
+        $(eval __pch := $(__pch:%.h=%.precompiled.h))\
+        $(__pch)\
+    ))
+
+ifneq (,$(LOCAL_PCH))
+    # Build PCH into obj directory
+    LOCAL_BUILT_PCH := $(call get-pch-name,$(LOCAL_PCH))
+
+    # Clang whines about a "c-header" (.h rather than .hpp) being used in C++
+    # mode (note that we use compile-cpp-source to build the header).
+    LOCAL_SRC_FILES_TARGET_CFLAGS.$(LOCAL_PCH) += -x c++-header
+
+    # Build PCH
+    $(call compile-cpp-source,$(LOCAL_PCH),$(LOCAL_BUILT_PCH).gch)
+
+    # The PCH must be compiled the same way as the sources (thumb vs arm must
+    # match). This means that we'd have to generate a PCH for both foo.c and
+    # foo.c.arm.
+    #
+    # Since files with those source tags should be the minority, precompiling
+    # that header might be a net loss compared to just using it normally. As
+    # such, we only use the PCH for the default compilation mode for the module.
+    #
+    # See https://github.com/android-ndk/ndk/issues/14
+    TAGS_TO_FILTER :=
+
+    # If we're building thumb, strip out .arm files.
+    ifneq (arm,$(LOCAL_ARM_MODE))
+        TAGS_TO_FILTER += arm
+    endif
+
+    # There is no .thumb. No need to filter them out if we're building ARM.
+
+    allowed_src := $(foreach src,$(filter $(all_cpp_patterns),$(LOCAL_SRC_FILES)),\
+        $(if $(filter $(TAGS_TO_FILTER),$(LOCAL_SRC_FILES_TAGS.$(src))),,$(src))\
+    )
+    # All files without tags depend on PCH
+    $(foreach src,$(allowed_src),\
+        $(eval $(LOCAL_OBJS_DIR)/$(call get-object-name,$(src)) : $(LOCAL_OBJS_DIR)/$(LOCAL_BUILT_PCH).gch)\
+    )
+    # Make sure those files are built with PCH
+    $(call add-src-files-target-cflags,$(allowed_src),-Winvalid-pch -include $(LOCAL_OBJS_DIR)/$(LOCAL_BUILT_PCH))
+
+    # Insert PCH dir at beginning of include search path
+    LOCAL_C_INCLUDES := \
+        $(LOCAL_OBJS_DIR) \
+        $(LOCAL_C_INCLUDES)
+endif
+
+# Build the sources to object files
+#
+
+do_tidy := $(NDK_APP_CLANG_TIDY)
+ifdef LOCAL_CLANG_TIDY
+    do_tidy := $(LOCAL_CLANG_TIDY)
+endif
+
+ifeq ($(do_tidy),true)
+    $(foreach src,$(filter %.c,$(LOCAL_SRC_FILES)),\
+        $(call clang-tidy-c,$(src),$(call get-object-name,$(src))))
+    $(foreach src,$(filter $(all_cpp_patterns),$(LOCAL_SRC_FILES)),\
+        $(call clang-tidy-cpp,$(src),$(call get-object-name,$(src))))
+endif
+
+$(foreach src,$(filter %.c,$(LOCAL_SRC_FILES)), $(call compile-c-source,$(src),$(call get-object-name,$(src))))
+$(foreach src,$(filter %.S %.s,$(LOCAL_SRC_FILES)), $(call compile-s-source,$(src),$(call get-object-name,$(src))))
+$(foreach src,$(filter $(all_cpp_patterns),$(LOCAL_SRC_FILES)),\
+    $(call compile-cpp-source,$(src),$(call get-object-name,$(src)))\
+)
+
+ifneq ($(filter x86 x86_64, $(TARGET_ARCH_ABI)),)
+$(foreach src,$(filter %.asm,$(LOCAL_SRC_FILES)), $(call compile-asm-source,$(src),$(call get-object-name,$(src))))
+endif
+
+#
+# The compile-xxx-source calls updated LOCAL_OBJECTS and LOCAL_DEPENDENCY_DIRS
+#
+ALL_DEPENDENCY_DIRS += $(sort $(LOCAL_DEPENDENCY_DIRS))
+CLEAN_OBJS_DIRS     += $(LOCAL_OBJS_DIR)
+
+#
+# Handle the static and shared libraries this module depends on
+#
+
+# https://github.com/android/ndk/issues/885
+# If we're using LLD we need to use a slower build-id algorithm to work around
+# the old version of LLDB in Android Studio, which doesn't understand LLD's
+# default hash ("fast").
+linker_ldflags := -Wl,--build-id=sha1
+
+ifneq (,$(call lt,$(APP_PLATFORM_LEVEL),30))
+    # https://github.com/android/ndk/issues/1196
+    # https://github.com/android/ndk/issues/1589
+    linker_ldflags += -Wl,--no-rosegment
+endif
+
+my_ldflags := $(TARGET_LDFLAGS) $(linker_ldflags) $(NDK_APP_LDFLAGS) $(LOCAL_LDFLAGS)
+
+# https://github.com/android/ndk/issues/1390
+# Only a warning rather than an error because the API level cannot be configured
+# on a per-module basis. If the user has an APP_PLATFORM that happens to be able
+# to build the static executables there's no need to fail the build.
+ifneq (,$(filter -static,$(my_ldflags)))
+    ifneq ($(APP_PLATFORM),$(NDK_MAX_PLATFORM))
+        $(call __ndk_info,WARNING: Building static executable but APP_PLATFORM \
+            $(APP_PLATFORM) is not the latest API level $(NDK_MAX_PLATFORM). \
+            Build may not succeed.)
+    endif
+endif
+
+# When LOCAL_SHORT_COMMANDS is defined to 'true' we are going to write the
+# list of all object files and/or static/shared libraries that appear on the
+# command line to a file, then use the @<listfile> syntax to invoke it.
+#
+# This allows us to link or archive a huge number of stuff even on Windows
+# with its puny 8192 max character limit on its command-line.
+#
+LOCAL_SHORT_COMMANDS := $(strip $(LOCAL_SHORT_COMMANDS))
+ifndef LOCAL_SHORT_COMMANDS
+    LOCAL_SHORT_COMMANDS := $(strip $(NDK_APP_SHORT_COMMANDS))
+endif
+
+$(call generate-file-dir,$(LOCAL_BUILT_MODULE))
+
+$(LOCAL_BUILT_MODULE): PRIVATE_OBJECTS := $(LOCAL_OBJECTS)
+$(LOCAL_BUILT_MODULE): PRIVATE_LIBATOMIC := $(TARGET_LIBATOMIC)
+
+$(LOCAL_BUILT_MODULE): PRIVATE_LD := $(TARGET_LD)
+$(LOCAL_BUILT_MODULE): PRIVATE_LDFLAGS := $(my_ldflags)
+$(LOCAL_BUILT_MODULE): PRIVATE_LDLIBS  := $(LOCAL_LDLIBS) $(TARGET_LDLIBS)
+
+$(LOCAL_BUILT_MODULE): PRIVATE_NAME := $(notdir $(LOCAL_BUILT_MODULE))
+$(LOCAL_BUILT_MODULE): PRIVATE_CXX := $(TARGET_CXX)
+$(LOCAL_BUILT_MODULE): PRIVATE_CC := $(TARGET_CC)
+$(LOCAL_BUILT_MODULE): PRIVATE_SYSROOT_API_LIB_DIR := $(SYSROOT_API_LIB_DIR)
+
+ifeq (,$(call module_needs_clangxx,$(LOCAL_MODULE)))
+$(LOCAL_BUILT_MODULE): PRIVATE_LD_DRIVER := $(TARGET_CC)
+else
+$(LOCAL_BUILT_MODULE): PRIVATE_LD_DRIVER := $(TARGET_CXX)
+endif
+
+ifeq ($(call module-get-class,$(LOCAL_MODULE)),STATIC_LIBRARY)
+
+#
+# This is a static library module, things are very easy. We only need
+# to build the object files and archive them with 'ar'. Note that module
+# dependencies can be ignored here, i.e. if the module depends on other
+# static or shared libraries, there is no need to actually build them
+# before, so don't add Make dependencies to them.
+#
+# In other words, consider the following graph:
+#
+#     libfoo.so -> libA.a ->libB.a
+#
+# then libA.a and libB.a can be built in parallel, only linking libfoo.so
+# depends on their completion.
+#
+
+ar_objects := $(call host-path,$(LOCAL_OBJECTS))
+
+ifeq ($(LOCAL_SHORT_COMMANDS),true)
+    $(call ndk_log,Building static library module '$(LOCAL_MODULE)' with linker list file)
+    ar_list_file := $(LOCAL_OBJS_DIR)/archiver.list
+    $(call generate-list-file,\
+        $(call escape-backslashes,$(ar_objects)),$(ar_list_file))
+    ar_objects   := @$(call host-path,$(ar_list_file))
+    $(LOCAL_BUILT_MODULE): $(ar_list_file)
+endif
+
+# Compute 'ar' flags. Thin archives simply require 'T' here.
+ar_flags := $(TARGET_ARFLAGS)
+ifeq (true,$(thin_archive))
+    $(call ndk_log,$(TARGET_ARCH_ABI):Building static library '$(LOCAL_MODULE)' as thin archive)
+    ar_flags := $(ar_flags)T
+endif
+
+$(LOCAL_BUILT_MODULE): PRIVATE_ABI := $(TARGET_ARCH_ABI)
+$(LOCAL_BUILT_MODULE): PRIVATE_AR := $(TARGET_AR) $(ar_flags) $(TARGET_AR_FLAGS)
+$(LOCAL_BUILT_MODULE): PRIVATE_AR_OBJECTS := $(ar_objects)
+$(LOCAL_BUILT_MODULE): PRIVATE_BUILD_STATIC_LIB := $(cmd-build-static-library)
+
+$(LOCAL_BUILT_MODULE): $(LOCAL_OBJECTS)
+	$(call host-echo-build-step,$(PRIVATE_ABI),StaticLibrary) "$(PRIVATE_NAME)"
+	$(hide) $(call host-rm,$@)
+	$(hide) $(PRIVATE_BUILD_STATIC_LIB)
+
+ALL_STATIC_LIBRARIES += $(LOCAL_BUILT_MODULE)
+
+endif
+
+ifneq (,$(filter SHARED_LIBRARY EXECUTABLE,$(call module-get-class,$(LOCAL_MODULE))))
+
+#
+# This is a shared library or an executable, so computing dependencies properly is
+# crucial. The general rule to apply is the following:
+#
+#   - collect the list of all static libraries that need to be part
+#     of the link, and in the right order. To do so, get the transitive
+#     closure of LOCAL_STATIC_LIBRARIES and LOCAL_WHOLE_STATIC_LIBRARIES
+#     and ensure they are ordered topologically.
+#
+#  - collect the list of all shared libraries that need to be part of
+#    the link. This is the transitive closure of the list of
+#    LOCAL_SHARED_LIBRARIES for the module and all its dependent static
+#    libraries identified in the step above. Of course, need to be
+#    ordered topologically too.
+#
+#  - add Make dependencies to ensure that all these libs are built
+#    before the module itself too.
+#
+# A few quick examples:
+#
+#    main.exe -> libA.a -> libB.a -> libfoo.so -> libC.a
+#
+#      static_libs(main.exe) = libA.a libB.a  (i.e. no libC.a)
+#      shared_libs(main.exe) = libfoo.so
+#      static_libs(libfoo.so) = libC.a
+#
+#    main.exe -> libA.a ---> libB.a
+#                  |           ^
+#                  v           |
+#                libC.a  ------
+#
+#      static_libs(main.exe) = libA.a libC.a libB.a
+#             (i.e. libB.a must appear after all libraries that depend on it).
+#
+all_libs := $(call module-get-link-libs,$(LOCAL_MODULE))
+shared_libs := $(call module-filter-shared-libraries,$(all_libs))
+static_libs := $(call module-filter-static-libraries,$(all_libs))
+whole_static_libs := $(call module-extract-whole-static-libs,$(LOCAL_MODULE),$(static_libs))
+static_libs := $(filter-out $(whole_static_libs),$(static_libs))
+all_defined_libs := $(shared_libs) $(static_libs) $(whole_static_libs)
+undefined_libs := $(filter-out $(all_defined_libs),$(all_libs))
+
+ifdef undefined_libs
+    $(call __ndk_warning,Module $(LOCAL_MODULE) depends on undefined modules: $(undefined_libs))
+
+    # https://github.com/android-ndk/ndk/issues/208
+    # ndk-build didn't used to fail the build for a missing dependency. This
+    # seems to have always been the behavior, so there's a good chance that
+    # there are builds out there that depend on this behavior (as of right now,
+    # anything using libc++ on ARM has this problem because of libunwind).
+    #
+    # By default we will abort in this situation because this is so completely
+    # broken. A user may define APP_ALLOW_MISSING_DEPS to "true" in their
+    # Application.mk or on the command line to revert to the old, broken
+    # behavior.
+    ifneq ($(APP_ALLOW_MISSING_DEPS),true)
+        $(call __ndk_error,Note that old versions of ndk-build silently ignored \
+            this error case. If your project worked on those versions$(comma) \
+            the missing libraries were not needed and you can remove those \
+            dependencies from the module to fix your build. \
+            Alternatively$(comma) set APP_ALLOW_MISSING_DEPS=true to allow \
+            missing dependencies.)
+        $(call __ndk_error,Aborting.)
+    endif
+endif
+
+$(call -ndk-mod-debug,module $(LOCAL_MODULE) [$(LOCAL_BUILT_MODULE)])
+$(call -ndk-mod-debug,.  all_libs='$(all_libs)')
+$(call -ndk-mod-debug,.  shared_libs='$(shared_libs)')
+$(call -ndk-mod-debug,.  static_libs='$(static_libs)')
+$(call -ndk-mod-debug,.  whole_static_libs='$(whole_static_libs)')
+
+shared_libs       := $(call map,module-get-built,$(shared_libs))
+static_libs       := $(call map,module-get-built,$(static_libs))
+whole_static_libs := $(call map,module-get-built,$(whole_static_libs))
+
+$(call -ndk-mod-debug,.  built_shared_libs='$(shared_libs)')
+$(call -ndk-mod-debug,.  built_static_libs='$(static_libs)')
+$(call -ndk-mod-debug,.  built_whole_static_libs='$(whole_static_libs)')
+
+# The list of object/static/shared libraries passed to the linker when
+# building shared libraries and executables. order is important.
+linker_objects_and_libraries = $(strip $(call TARGET-get-linker-objects-and-libraries,\
+    $(LOCAL_OBJECTS), \
+    $(static_libs), \
+    $(whole_static_libs), \
+    $(shared_libs)))
+
+ifeq ($(LOCAL_SHORT_COMMANDS),true)
+    $(call ndk_log,Building ELF binary module '$(LOCAL_MODULE)' with linker list file)
+    linker_options   := $(linker_objects_and_libraries)
+    linker_list_file := $(LOCAL_OBJS_DIR)/linker.list
+    linker_objects_and_libraries := @$(call host-path,$(linker_list_file))
+    $(call generate-list-file,\
+        $(call escape-backslashes,$(linker_options)),$(linker_list_file))
+    $(LOCAL_BUILT_MODULE): $(linker_list_file)
+endif
+
+$(LOCAL_BUILT_MODULE): $(shared_libs) $(static_libs) $(whole_static_libs)
+$(LOCAL_BUILT_MODULE): PRIVATE_ABI := $(TARGET_ARCH_ABI)
+$(LOCAL_BUILT_MODULE): PRIVATE_LINKER_OBJECTS_AND_LIBRARIES := $(linker_objects_and_libraries)
+$(LOCAL_BUILT_MODULE): PRIVATE_STATIC_LIBRARIES := $(static_libs)
+$(LOCAL_BUILT_MODULE): PRIVATE_WHOLE_STATIC_LIBRARIES := $(whole_static_libs)
+$(LOCAL_BUILT_MODULE): PRIVATE_SHARED_LIBRARIES := $(shared_libs)
+
+endif
+
+#
+# If this is a shared library module
+#
+ifeq ($(call module-get-class,$(LOCAL_MODULE)),SHARED_LIBRARY)
+$(LOCAL_BUILT_MODULE): PRIVATE_BUILD_SHARED_LIB := $(cmd-build-shared-library)
+$(LOCAL_BUILT_MODULE): $(LOCAL_OBJECTS)
+	$(call host-echo-build-step,$(PRIVATE_ABI),SharedLibrary) "$(PRIVATE_NAME)"
+	$(hide) $(PRIVATE_BUILD_SHARED_LIB)
+
+ALL_SHARED_LIBRARIES += $(LOCAL_BUILT_MODULE)
+endif
+
+#
+# If this is an executable module
+#
+ifeq ($(call module-get-class,$(LOCAL_MODULE)),EXECUTABLE)
+$(LOCAL_BUILT_MODULE): PRIVATE_ABI := $(TARGET_ARCH_ABI)
+$(LOCAL_BUILT_MODULE): PRIVATE_BUILD_EXECUTABLE := $(cmd-build-executable)
+$(LOCAL_BUILT_MODULE): $(LOCAL_OBJECTS)
+	$(call host-echo-build-step,$(PRIVATE_ABI),Executable) "$(PRIVATE_NAME)"
+	$(hide) $(PRIVATE_BUILD_EXECUTABLE)
+
+ALL_EXECUTABLES += $(LOCAL_BUILT_MODULE)
+endif
+
+#
+# If this is a copyable prebuilt module
+#
+ifeq ($(call module-is-copyable,$(LOCAL_MODULE)),$(true))
+$(LOCAL_BUILT_MODULE): $(LOCAL_OBJECTS)
+	$(call host-echo-build-step,$(PRIVATE_ABI),Prebuilt) "$(PRIVATE_NAME) <= $(call pretty-dir,$(dir $<))"
+	$(hide) $(call host-cp,$<,$@)
+endif
+
+ifeq ($(LOCAL_STRIP_MODE),)
+    NDK_STRIP_MODE := $(NDK_APP_STRIP_MODE)
+else
+    NDK_STRIP_MODE := $(LOCAL_STRIP_MODE)
+endif
+
+#
+# If this is an installable module
+#
+ifeq ($(call module-is-installable,$(LOCAL_MODULE)),$(true))
+$(LOCAL_INSTALLED): PRIVATE_ABI         := $(TARGET_ARCH_ABI)
+$(LOCAL_INSTALLED): PRIVATE_NAME        := $(notdir $(LOCAL_BUILT_MODULE))
+$(LOCAL_INSTALLED): PRIVATE_SRC         := $(LOCAL_BUILT_MODULE)
+$(LOCAL_INSTALLED): PRIVATE_DST_DIR     := $(NDK_APP_DST_DIR)
+$(LOCAL_INSTALLED): PRIVATE_DST         := $(LOCAL_INSTALLED)
+$(LOCAL_INSTALLED): PRIVATE_STRIP       := $(TARGET_STRIP)
+$(LOCAL_INSTALLED): PRIVATE_STRIP_MODE  := $(NDK_STRIP_MODE)
+$(LOCAL_INSTALLED): PRIVATE_STRIP_CMD   := $(call cmd-strip, $(PRIVATE_DST))
+
+$(LOCAL_INSTALLED): $(LOCAL_BUILT_MODULE) clean-installed-binaries
+	$(call host-echo-build-step,$(PRIVATE_ABI),Install) "$(PRIVATE_NAME) => $(call pretty-dir,$(PRIVATE_DST))"
+	$(hide) $(call host-install,$(PRIVATE_SRC),$(PRIVATE_DST))
+	$(if $(filter none,$(PRIVATE_STRIP_MODE)),,$(hide) $(PRIVATE_STRIP_CMD))
+
+$(call generate-file-dir,$(LOCAL_INSTALLED))
+
+endif
--- a/Android/android-ndk-r27d/build/core/build-executable.mk
+++ b/Android/android-ndk-r27d/build/core/build-executable.mk
@ -0,0 +1,31 @@
+# Copyright (C) 2009 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# this file is included from Android.mk files to build a target-specific
+# executable program
+#
+
+LOCAL_BUILD_SCRIPT := BUILD_EXECUTABLE
+LOCAL_MAKEFILE     := $(local-makefile)
+
+$(call check-defined-LOCAL_MODULE,$(LOCAL_BUILD_SCRIPT))
+$(call check-LOCAL_MODULE,$(LOCAL_MAKEFILE))
+$(call check-LOCAL_MODULE_FILENAME)
+
+$(call handle-module-filename,,)
+$(call handle-module-built)
+
+LOCAL_MODULE_CLASS := EXECUTABLE
+include $(BUILD_SYSTEM)/build-module.mk
--- a/Android/android-ndk-r27d/build/core/build-local.mk
+++ b/Android/android-ndk-r27d/build/core/build-local.mk
@ -0,0 +1,225 @@
+# Copyright (C) 2010 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# This file is designed to be called from the 'ndk-build' script
+# or similar wrapper tool.
+#
+
+# Detect the NDK installation path by processing this Makefile's location.
+# This assumes we are located under $NDK_ROOT/build/core/main.mk
+#
+
+# Don't output to stdout if we're being invoked to dump a variable
+DUMP_VAR := $(patsubst DUMP_%,%,$(filter DUMP_%,$(MAKECMDGOALS)))
+ifneq (,$(DUMP_VAR))
+    NDK_NO_INFO := 1
+    NDK_NO_WARNINGS := 1
+endif
+
+NDK_ROOT := $(dir $(lastword $(MAKEFILE_LIST)))
+NDK_ROOT := $(subst \,/,$(NDK_ROOT))
+NDK_ROOT := $(strip $(NDK_ROOT:%build/core/=%))
+NDK_ROOT := $(NDK_ROOT:%/=%)
+ifeq ($(NDK_ROOT),)
+    # for the case when we're invoked from the NDK install path
+    NDK_ROOT := .
+endif
+ifeq ($(NDK_LOG),1)
+    $(info Android NDK: NDK installation path auto-detected: '$(NDK_ROOT)')
+endif
+ifneq ($(words $(NDK_ROOT)),1)
+    $(info Android NDK: Your NDK installation path contains spaces.)
+    $(info Android NDK: Please re-install to a different location to fix the issue !)
+    $(error Aborting.)
+endif
+
+include $(NDK_ROOT)/build/core/init.mk
+
+# ====================================================================
+#
+# If NDK_PROJECT_PATH is not defined, find the application's project
+# path by looking at the manifest file in the current directory or
+# any of its parents. If none is found, try again with 'jni/Android.mk'
+#
+# Note that we first look at the current directory to avoid using
+# absolute NDK_PROJECT_PATH values. This reduces the length of all
+# source, object and binary paths that are passed to build commands.
+#
+# It turns out that some people use ndk-build to generate static
+# libraries without a full Android project tree.
+#
+# If NDK_PROJECT_PATH=null, ndk-build make no attempt to look for it, but does
+# need the following variables depending on NDK_PROJECT_PATH to be explicitly
+# specified (from the default, if any):
+#
+#   NDK_OUT
+#   NDK_LIBS_OUT
+#   APP_BUILD_SCRIPT
+#   NDK_DEBUG (optional, default to 0)
+#   Other APP_* used to be in Application.mk
+#
+# This behavior may be useful in an integrated build system.
+#
+# ====================================================================
+
+find-project-dir = $(strip $(call find-project-dir-inner,$(abspath $1),$2))
+
+find-project-dir-inner = \
+    $(eval __found_project_path := )\
+    $(eval __find_project_path := $1)\
+    $(eval __find_project_file := $2)\
+    $(call find-project-dir-inner-2)\
+    $(__found_project_path)
+
+find-project-dir-inner-2 = \
+    $(call ndk_log,Looking for $(__find_project_file) in $(__find_project_path))\
+    $(eval __find_project_manifest := $(strip $(wildcard $(__find_project_path)/$(__find_project_file))))\
+    $(if $(__find_project_manifest),\
+        $(call ndk_log,    Found it !)\
+        $(eval __found_project_path := $(__find_project_path))\
+        ,\
+        $(eval __find_project_parent := $(call parent-dir,$(__find_project_path)))\
+        $(if $(__find_project_parent),\
+            $(eval __find_project_path := $(__find_project_parent))\
+            $(call find-project-dir-inner-2)\
+        )\
+    )
+
+NDK_PROJECT_PATH := $(strip $(NDK_PROJECT_PATH))
+APP_PROJECT_PATH := $(strip $(APP_PROJECT_PATH))
+
+ifneq (,$(APP_PROJECT_PATH))
+    ifeq (,$(NDK_PROJECT_PATH))
+        # If NDK_PROJECT_PATH isn't set and APP_PROJECT_PATH is present, use APP_PROJECT_PATH
+        $(call ndk_log,Use APP_PROJECT_PATH for NDK_PROJECT_PATH: $(APP_PROJECT_PATH))
+        NDK_PROJECT_PATH := $(APP_PROJECT_PATH)
+    else
+        # If both NDK_PROJECT_PATH and APP_PROJECT_PATH are present, check consistency
+        ifneq ($(NDK_PROJECT_PATH),$(APP_PROJECT_PATH))
+            $(call __ndk_info,WARNING: NDK_PROJECT_PATH and APP_PROJECT_PATH are both set but not equal literally)
+            $(call __ndk_info,  NDK_PROJECT_PATH = $(NDK_PROJECT_PATH))
+            $(call __ndk_info,  APP_PROJECT_PATH = $(APP_PROJECT_PATH))
+        endif
+    endif
+endif
+
+ifeq (null,$(NDK_PROJECT_PATH))
+
+$(call ndk_log,Make no attempt to look for NDK_PROJECT_PATH.)
+
+else
+
+# To keep paths as short as possible during the build, we first look if the
+# current directory is the top of our project path. If this is the case, we
+# will define NDK_PROJECT_PATH to simply '.'
+#
+# Otherwise, we will use find-project-dir which will first get the absolute
+# path of the current directory the climb back the hierarchy until we find
+# something. The result will always be a much longer definition for
+# NDK_PROJECT_PATH
+#
+ifndef NDK_PROJECT_PATH
+    ifneq (,$(strip $(wildcard AndroidManifest.xml)))
+        NDK_PROJECT_PATH := .
+    else
+        ifneq (,$(strip $(wildcard jni/Android.mk)))
+            NDK_PROJECT_PATH := .
+        endif
+    endif
+endif
+ifndef NDK_PROJECT_PATH
+    NDK_PROJECT_PATH := $(call find-project-dir,.,jni/Android.mk)
+endif
+ifndef NDK_PROJECT_PATH
+    NDK_PROJECT_PATH := $(call find-project-dir,.,AndroidManifest.xml)
+endif
+ifndef NDK_PROJECT_PATH
+    $(call __ndk_info,Could not find application project directory !)
+    $(call __ndk_info,Please define the NDK_PROJECT_PATH variable to point to it.)
+    $(call __ndk_error,Aborting)
+endif
+
+# Check that there are no spaces in the project path, or bad things will happen
+ifneq ($(words $(NDK_PROJECT_PATH)),1)
+    $(call __ndk_info,Your Android application project path contains spaces: '$(NDK_PROJECT_PATH)')
+    $(call __ndk_info,The Android NDK build cannot work here. Please move your project to a different location.)
+    $(call __ndk_error,Aborting.)
+endif
+
+$(call ndk_log,Found project path: $(NDK_PROJECT_PATH))
+
+NDK_APPLICATION_MK := $(strip $(wildcard $(NDK_PROJECT_PATH)/jni/Application.mk))
+
+endif # NDK_PROJECT_PATH == null
+
+ifndef NDK_APPLICATION_MK
+    NDK_APPLICATION_MK := $(NDK_ROOT)/build/core/default-application.mk
+endif
+
+
+# Place all generated intermediate files here
+NDK_APP_OUT := $(strip $(NDK_OUT))
+ifndef NDK_APP_OUT
+  ifeq (null,$(NDK_PROJECT_PATH))
+    $(call __ndk_info,NDK_PROJECT_PATH==null.  Please explicitly set NDK_OUT to directory for all generated intermediate files.)
+    $(call __ndk_error,Aborting.)
+  endif
+  NDK_APP_OUT := $(NDK_PROJECT_PATH)/obj
+endif
+$(call ndk_log,Ouput path for intermediate files: $(NDK_APP_OUT))
+
+# Place all generated library files here.  This is rarely changed since aapt expects the default libs/
+NDK_APP_LIBS_OUT := $(strip $(NDK_LIBS_OUT))
+ifndef NDK_APP_LIBS_OUT
+  ifeq (null,$(NDK_PROJECT_PATH))
+    $(call __ndk_info,NDK_PROJECT_PATH==null.  Please explicitly set NDK_LIBS_OUT to directory for generated library files.)
+    $(call __ndk_error,Aborting.)
+  endif
+  NDK_APP_LIBS_OUT := $(NDK_PROJECT_PATH)/libs
+endif
+$(call ndk_log,Ouput path for generated library files: $(NDK_APP_LIBS_OUT))
+
+# Fake an application named 'local'
+_app            := local
+_application_mk := $(NDK_APPLICATION_MK)
+NDK_APPS        := $(_app)
+
+include $(BUILD_SYSTEM)/add-application.mk
+
+# If a goal is DUMP_xxx then we dump a variable xxx instead
+# of building anything
+#
+MAKECMDGOALS := $(filter-out DUMP_$(DUMP_VAR),$(MAKECMDGOALS))
+
+include $(BUILD_SYSTEM)/setup-imports.mk
+
+ifneq (,$(DUMP_VAR))
+
+# We only support a single DUMP_XXX goal at a time for now.
+ifneq ($(words $(DUMP_VAR)),1)
+    $(call __ndk_error,!!TOO-MANY-DUMP-VARIABLES!!)
+endif
+
+$(foreach _app,$(NDK_APPS),\
+  $(eval include $(BUILD_SYSTEM)/setup-app.mk)\
+)
+
+.PHONY : DUMP_$(DUMP_VAR)
+DUMP_$(DUMP_VAR):
+	@echo $($(DUMP_VAR))
+else
+    # Build it
+    include $(BUILD_SYSTEM)/build-all.mk
+endif
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Isuru Samarathunga	c71272ff13	Fixes	2025-10-31 21:47:59 +05:30
Isuru Samarathunga	050027fcb0	Fixes	2025-10-31 17:16:01 +05:30
Isuru Samarathunga	f9007403d9	Fixes	2025-10-31 15:08:23 +05:30
Isuru Samarathunga	9ff1d10d00	TileSet	2025-10-31 15:06:23 +05:30
Isuru Samarathunga	b8b9f6aa82	Sample: RPG: Init	2025-10-31 01:15:44 +05:30
Isuru Samarathunga	0916385521	Sample: RPG: Init	2025-10-31 01:14:48 +05:30
Isuru Samarathunga	0afd478761	Sample: RPG: Init	2025-10-31 01:14:19 +05:30
Isuru Samarathunga	7530303389	Fixes	2025-10-30 23:40:39 +05:30
Isuru Samarathunga	4e41048352	Fixes	2025-10-22 10:52:24 +05:30
Isuru Samarathunga	e40b1f120b	Fixes	2025-10-21 23:24:14 +05:30
Isuru Samarathunga	2d5875d211	Fixes	2025-10-21 21:03:40 +05:30
Isuru Samarathunga	86ed9346aa	Optimized Renderer	2025-10-21 10:44:11 +05:30
Isuru Samarathunga	b10aacaee7	Text Rendering	2025-10-20 23:39:54 +05:30
Isuru Samarathunga	d4e93b047c	Fixes	2025-10-18 14:41:28 +05:30
Isuru Samarathunga	fb66a2d09d	Fixes	2025-10-18 14:13:36 +05:30
Isuru Samarathunga	57bc80f4f9	Add LunaSVG	2025-10-18 09:26:01 +05:30
Isuru Samarathunga	4597d0a4aa	Android Project	2025-10-18 00:07:21 +05:30
Isuru Samarathunga	d1372b9b59	Fixes	2025-10-17 08:27:37 +05:30
Isuru Samarathunga	a93910a43d	Texture Fixes	2025-10-17 00:51:28 +05:30
Isuru Samarathunga	ad4a1ac6f2	Merge	2025-10-16 23:01:59 +05:30
Isuru Samarathunga	206a1a288d	Merge branch 'dev' of https://git.iasoft.dev/dev0/IAEngine into dev	2025-10-16 23:01:34 +05:30
Isuru Samarathunga	c813b02b90	Fixes	2025-10-16 23:00:50 +05:30
Isuru Samarathunga	dfce12ee10	mipmaps	2025-10-16 22:59:33 +05:30
Isuru Samarathunga	2062c35fde	Fixes	2025-10-16 22:59:03 +05:30
Isuru Samarathunga	160bf65a1f	Android Build Tools	2025-10-16 00:43:42 +05:30
Isuru Samarathunga	f742dcfaff	Fixes	2025-10-15 09:27:19 +05:30
Isuru Samarathunga	0f557eb010	Fixes	2025-10-14 02:58:39 +05:30
Isuru Samarathunga	58f2190199	Fixes	2025-10-14 01:50:56 +05:30
Isuru Samarathunga	13e8c538c7	Clean	2025-10-12 23:06:11 +05:30
Isuru Samarathunga	bf755a6d02	Android Project	2025-10-12 23:04:48 +05:30
Isuru Samarathunga	35ecd108ab	Android Fixes	2025-10-12 23:03:39 +05:30
Isuru Samarathunga	ce9ea1fd52	Fixes	2025-10-12 20:42:31 +05:30
Isuru Samarathunga	4380705f81	Fixes	2025-10-12 16:39:29 +05:30
Isuru Samarathunga	09131d7fab	TileMap Component	2025-10-11 23:54:31 +05:30
Isuru Samarathunga	e0411333fb	SpriteRenderer	2025-10-11 20:18:11 +05:30
Isuru Samarathunga	7191fb19f0	Fixes	2025-10-10 20:16:57 +05:30
Isuru Samarathunga	8afe023901	Fixes	2025-10-10 13:30:29 +05:30
Isuru Samarathunga	96bad30f15	Back	2025-10-09 19:28:54 +05:30
Isuru Samarathunga	1f9d5426b8	Engine API Enhancements	2025-10-08 00:45:02 +05:30
				`@ -0,0 +1 @@`
				`set(NDK_SYSTEM_LIBS "libEGL.so;libGLESv1_CM.so;libGLESv2.so;libGLESv3.so;libOpenMAXAL.so;libOpenSLES.so;libaaudio.so;libamidi.so;libandroid.so;libbinder_ndk.so;libc.so;libcamera2ndk.so;libdl.so;libicu.so;libjnigraphics.so;liblog.so;libm.so;libmediandk.so;libnativehelper.so;libnativewindow.so;libneuralnetworks.so;libstdc++.so;libsync.so;libvulkan.so;libz.so")`