122 lines
4.5 KiB
CMake
122 lines
4.5 KiB
CMake
# Copyright (C) 2020 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# This file will be included directly by cmake. It is used to provide
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# additional cflags / ldflags.
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cmake_minimum_required(VERSION 3.12.0)
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set(_ANDROID_NDK_INIT_CFLAGS)
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set(_ANDROID_NDK_INIT_CFLAGS_DEBUG)
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set(_ANDROID_NDK_INIT_CFLAGS_RELEASE)
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set(_ANDROID_NDK_INIT_LDFLAGS)
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set(_ANDROID_NDK_INIT_LDFLAGS_EXE)
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# Generic flags.
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string(APPEND _ANDROID_NDK_INIT_CFLAGS
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" -DANDROID"
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" -fdata-sections"
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" -ffunction-sections"
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" -funwind-tables"
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" -fstack-protector-strong"
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" -no-canonical-prefixes")
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if(ANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES)
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string(APPEND _ANDROID_NDK_INIT_CFLAGS " -D__BIONIC_NO_PAGE_SIZE_MACRO")
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if(ANDROID_ABI STREQUAL arm64-v8a OR ANDROID_ABI STREQUAL x86_64)
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string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -Wl,-z,max-page-size=16384")
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endif()
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endif()
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if(ANDROID_WEAK_API_DEFS)
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string(APPEND _ANDROID_NDK_INIT_CFLAGS
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" -D__ANDROID_UNAVAILABLE_SYMBOLS_ARE_WEAK__"
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" -Werror=unguarded-availability")
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endif()
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if("hwaddress" IN_LIST ANDROID_SANITIZE)
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string(APPEND _ANDROID_NDK_INIT_CFLAGS " -fsanitize=hwaddress -fno-omit-frame-pointer")
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string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -fsanitize=hwaddress")
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endif()
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if("memtag" IN_LIST ANDROID_SANITIZE)
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string(APPEND _ANDROID_NDK_INIT_CFLAGS " -fsanitize=memtag-stack -fno-omit-frame-pointer")
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string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -fsanitize=memtag-stack,memtag-heap -fsanitize-memtag-mode=sync")
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if(CMAKE_ANDROID_ARCH_ABI STREQUAL "arm64-v8a")
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string(APPEND _ANDROID_NDK_INIT_CFLAGS " -march=armv8-a+memtag")
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string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -march=armv8-a+memtag")
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endif()
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endif()
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string(APPEND _ANDROID_NDK_INIT_CFLAGS_DEBUG " -fno-limit-debug-info")
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# If we're using LLD we need to use a slower build-id algorithm to work around
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# the old version of LLDB in Android Studio, which doesn't understand LLD's
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# default hash ("fast").
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#
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# https://github.com/android/ndk/issues/885
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string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -Wl,--build-id=sha1")
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if(CMAKE_SYSTEM_VERSION LESS 30)
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# https://github.com/android/ndk/issues/1196
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# https://github.com/android/ndk/issues/1589
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string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -Wl,--no-rosegment")
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endif()
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if (NOT ANDROID_ALLOW_UNDEFINED_VERSION_SCRIPT_SYMBOLS)
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string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -Wl,--no-undefined-version")
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endif()
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string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -Wl,--fatal-warnings")
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# This should only be set for release modes, but CMake doesn't provide a way for
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# us to be that specific in the new toolchain file.
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# https://github.com/android/ndk/issues/1813
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string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -Wl,--gc-sections")
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string(APPEND _ANDROID_NDK_INIT_LDFLAGS_EXE " -Wl,--gc-sections")
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# Toolchain and ABI specific flags.
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if(CMAKE_ANDROID_ARCH_ABI STREQUAL x86 AND CMAKE_SYSTEM_VERSION LESS 24)
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# http://b.android.com/222239
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# http://b.android.com/220159 (internal http://b/31809417)
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# x86 devices have stack alignment issues.
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string(APPEND _ANDROID_NDK_INIT_CFLAGS " -mstackrealign")
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endif()
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string(APPEND _ANDROID_NDK_INIT_CFLAGS " -D_FORTIFY_SOURCE=2")
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if(CMAKE_ANDROID_ARCH_ABI MATCHES "armeabi")
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# Clang does not set this up properly when using -fno-integrated-as.
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# https://github.com/android-ndk/ndk/issues/906
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string(APPEND _ANDROID_NDK_INIT_CFLAGS " -march=armv7-a")
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if(NOT CMAKE_ANDROID_ARM_MODE)
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string(APPEND _ANDROID_NDK_INIT_CFLAGS " -mthumb")
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endif()
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endif()
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# CMake automatically forwards all compiler flags to the linker, and clang
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# doesn't like having -Wa flags being used for linking. To prevent CMake from
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# doing this would require meddling with the CMAKE_<LANG>_COMPILE_OBJECT rules,
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# which would get quite messy.
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string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -Qunused-arguments")
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if(ANDROID_DISABLE_FORMAT_STRING_CHECKS)
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string(APPEND _ANDROID_NDK_INIT_CFLAGS " -Wno-error=format-security")
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else()
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string(APPEND _ANDROID_NDK_INIT_CFLAGS " -Wformat -Werror=format-security")
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endif()
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if(NOT ANDROID_ALLOW_UNDEFINED_SYMBOLS)
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string(APPEND _ANDROID_NDK_INIT_LDFLAGS " -Wl,--no-undefined")
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endif()
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