Android Build Tools
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Isuru Samarathunga
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Android/android-ndk-r27d/CHANGELOG.md
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# Changelog
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Report issues to [GitHub].
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For Android Studio issues, go to https://b.android.com and file a bug using the
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Android Studio component, not the NDK component.
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If you're a build system maintainer that needs to use the tools in the NDK
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directly, see the [build system maintainers guide].
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[GitHub]: https://github.com/android/ndk/issues
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[build system maintainers guide]: https://android.googlesource.com/platform/ndk/+/master/docs/BuildSystemMaintainers.md
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## Announcements
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* Android V will allow OEMs to ship arm64-v8a devices with 16KiB page sizes.
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Devices that use this configuration will not be able to run existing apps that
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use native code. To be compatible with these devices, applications will need
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to rebuild all their native code to be 16KiB aligned, and rewrite any code
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which assumes a specific page size. ndk-build and CMake have options to enable
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this mode (see note about `APP_SUPPORT_FLEXIBLE_PAGE_SIZES` and
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`ANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES` below). A future version of the NDK will
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enable this mode by default. If you're using or maintaining a third-party
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build system, consult the [build system maintainers guide] for instructions.
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See [Support 16 KB page sizes] for more information.
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[Support 16 KB page sizes]: https://developer.android.com/guide/practices/page-sizes
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## r27d
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* Updated LLVM to clang-r522817d. See `clang_source_info.md` in the toolchain
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directory for version information.
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* [Issue 2144]: Fixed issue where `lldb.sh` did not work when installed to a
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path which contained spaces.
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* [Issue 2143]: Fixed lldb.sh not finding libpython on macOS.
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[Issue 2143]: https://github.com/android/ndk/issues/2143
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[Issue 2144]: https://github.com/android/ndk/issues/2144
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## r27c
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* Updated LLVM to clang-r522817c. See `clang_source_info.md` in the toolchain
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directory for version information.
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* [Issue 2040]: Further fixes for miscompiles of indirect gotos.
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* [Issue 2064]: Fix HWAsan miscompilation.
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* [Issue 2070]: Fix crash in instantiation of function definitions.
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* [Issue 2084]: Fix for incorrect compiler error on overloaded member
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functions with ref-qualifiers.
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[Issue 2040]: https://github.com/android/ndk/issues/2040
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[Issue 2064]: https://github.com/android/ndk/issues/2064
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[Issue 2070]: https://github.com/android/ndk/issues/2070
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[Issue 2084]: https://github.com/android/ndk/issues/2084
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## r27b
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* Updated LLVM to clang-r522817b. See `clang_source_info.md` in the toolchain
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directory for version information.
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* [Issue 2040]: Fixed miscompile with indirect gotos.
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* [Issue 2054]: Fixed crash in x86 fp16 instruction selection.
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* [Issue 2059]: Fixed infinite loop in aarch64 vector instruction selection.
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* [Issue 2032]: Fixed compatibility issues with projects that used a very old
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`cmake_minimum_required` version ("Policy CMP0057 is not set: Support new
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IN_LIST if() operator").
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* [Issue 2039]: Fixed `LOCAL_STRIP_MODE` not being reset by
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`include $(CLEAR_VARS)`.
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* [Issue 2049]: Restored metadata used by CMake in non-toolchain-file use cases
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that used `CMAKE_SYSTEM_PROCESSOR` instead of `CMAKE_ANDROID_ARCH_ABI`. If you
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ran into this problem, you should switch to using `CMAKE_ANDROID_ARCH_ABI`
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because that's what [CMake's docs] say to use. Better still, use the NDK's
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[toolchain file].
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[Issue 2032]: https://github.com/android/ndk/issues/2032
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[Issue 2039]: https://github.com/android/ndk/issues/2039
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[Issue 2040]: https://github.com/android/ndk/issues/2040
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[Issue 2049]: https://github.com/android/ndk/issues/2049
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[Issue 2054]: https://github.com/android/ndk/issues/2054
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[Issue 2059]: https://github.com/android/ndk/issues/2059
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[CMake's docs]: https://cmake.org/cmake/help/latest/manual/cmake-toolchains.7.html#cross-compiling-for-android-with-the-ndk
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[toolchain file]: https://developer.android.com/ndk/guides/cmake
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## Changes
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* Updated LLVM to clang-r522817. See `clang_source_info.md` in the toolchain
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directory for version information.
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* [Issue 1728]: Clang now emits an error for invalid Android target versions.
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* [Issue 1853]: `clang-scan-deps` is now included.
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* [Issue 1911]: Fixed inconsistent `std::regex_replace` results.
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* [Issue 1947]: Improved support for AArch64 function multi-versioning in clang.
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* [Issue 1963]: Fixed undefined behavior in `std::unexpected::has_value()`.
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* [Issue 1988]: Added aarch64 support for `preserve_all` calling convention.
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* [Issue 2007]: Fixed crash in class template argument deduction caused by
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self-referential friend declaration.
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* [Issue 2010]: Removed superfluous libraries to reduce disk use.
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* [Issue 2012]: Fixed front end crash when using concepts and modules.
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* [Issue 2013]: Fixed false positive ODR violation in global module fragments.
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* [Issue 2023]: Fixed Clang crashes related to lambda captures in unevaluated
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contexts.
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* [Issue 2024]: Removed invalid `__attribute__((__const__))` from `gettid`.
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* A RISC-V sysroot (AKA riscv64, or rv64) has been added. It is **not**
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supported. It is present to aid bringup for OS vendors, but it's not yet a
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supported Android ABI. It will not be built by default.
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* [Issue 1856]: Target-prefixed cmd wrappers for clang should now behave
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appropriately when the first argument includes quotes. **You probably do not
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need to use those wrappers.** In most cases where you would use
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`aarch64-linux-android21-clang`, you can instead use `clang -target
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aarch64-linux-android21`, e.g. `CC="clang -target aarch64-linux-android21"
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./configure`. The wrappers are only needed when working with systems that do
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not properly handle a `CC` that includes arguments.
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* [Issue 1898]: ndk-stack now tolerates 0x prefixed addresses.
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* [Issue 1921]: `ANDROID_USE_LEGACY_TOOLCHAIN_FILE` value is now preserved
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during try-compile steps when `ON`.
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* [Issue 1974]: Unintentionally shipped Vulkan headers have been removed from
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`sources/third_party/vulkan`. The standard Vulkan headers are included in the
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Android sysroot, which Clang will find automatically.
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* [Issue 1993]: ndk-stack now tolerates invalid UTF-8 characters in the trace.
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* [Issue 1994]: Fixed ndk-gdb/ndk-lldb to use the correct path for
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make and other tools.
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* Added `APP_SUPPORT_FLEXIBLE_PAGE_SIZES` for ndk-build and
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`ANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES` for CMake. Set to
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`APP_SUPPORT_FLEXIBLE_PAGE_SIZES := true` in your `Application.mk` or pass
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`-DANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES=ON` to CMake (via
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`android.defaultConfig.externalNativeBuild.cmake.arguments` if you're using
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the Android Gradle Plugin) to build your code to be compatible with devices
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that use a 16KiB page size. Third-party build system users and maintainers
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should consult the [build system maintainers guide].
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* Symlinks are now properly preserved in the macOS App Bundle. The NDK installed
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via that method is now the same size as the one installed via the SDK manager.
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* The unsupported libclang, libclang-cpp, libLLVM, and libLTO libraries were
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removed to save space.
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[Issue 1728]: https://github.com/android/ndk/issues/1728
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[Issue 1853]: https://github.com/android/ndk/issues/1853
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[Issue 1856]: https://github.com/android/ndk/issues/1856
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[Issue 1898]: https://github.com/android/ndk/issues/1898
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[Issue 1911]: https://github.com/android/ndk/issues/1911
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[Issue 1921]: https://github.com/android/ndk/issues/1921
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[Issue 1947]: https://github.com/android/ndk/issues/1947
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[Issue 1963]: https://github.com/android/ndk/issues/1963
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[Issue 1974]: https://github.com/android/ndk/issues/1974
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[Issue 1988]: https://github.com/android/ndk/issues/1988
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[Issue 1993]: https://github.com/android/ndk/issues/1993
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[Issue 1994]: https://github.com/android/ndk/issues/1994
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[Issue 2007]: https://github.com/android/ndk/issues/2007
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[Issue 2010]: https://github.com/android/ndk/issues/2010
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[Issue 2012]: https://github.com/android/ndk/issues/2012
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[Issue 2013]: https://github.com/android/ndk/issues/2013
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[Issue 2023]: https://github.com/android/ndk/issues/2023
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[Issue 2024]: https://github.com/android/ndk/issues/2024
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