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97bca2f9fa
The NDK build system now uses only a single toolchain in
<ndk>/toolchains/llvm/prebuilt/<host>
Its compilers are always `bin/{clang,clang++}` and its binutils are
always `bin/<triple>-*`. It is a standalone toolchain:
* The Anrdoid API level is specified at the end of `--target=`.
* The standard library may be specified via `-stdlib=`.
* No need to pass system includes or libraries explicitly.
* No need to pass `--sysroot` or `-gcc-toolchain`.
Teach CMake to recognize NDK versions that have a unified
toolchain with its own sysroot and use the above approach.
Fixes: #18739
49 lines
1.7 KiB
CMake
49 lines
1.7 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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# This module is shared by multiple languages; use include blocker.
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if(__ANDROID_COMPILER_CLANG)
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return()
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endif()
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set(__ANDROID_COMPILER_CLANG 1)
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# Support for NVIDIA Nsight Tegra Visual Studio Edition was previously
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# implemented in the CMake VS IDE generators. Avoid interfering with
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# that functionality for now. Later we may try to integrate this.
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if(CMAKE_VS_PLATFORM_NAME STREQUAL "Tegra-Android")
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macro(__android_compiler_clang lang)
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endmacro()
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return()
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endif()
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# Commonly used Android toolchain files that pre-date CMake upstream support
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# set CMAKE_SYSTEM_VERSION to 1. Avoid interfering with them.
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if(CMAKE_SYSTEM_VERSION EQUAL 1)
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macro(__android_compiler_clang lang)
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endmacro()
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return()
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endif()
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include(Platform/Android-Common)
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# The NDK toolchain configuration files at:
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#
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# <ndk>/[build/core/]toolchains/*-clang*/setup.mk
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#
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# contain logic to set LLVM_TRIPLE for Clang-based toolchains for each target.
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# We need to produce the same target here to produce compatible binaries.
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include(Platform/Android/abi-${CMAKE_ANDROID_ARCH_ABI}-Clang)
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macro(__android_compiler_clang lang)
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if(NOT "x${lang}" STREQUAL "xASM")
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__android_compiler_common(${lang})
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endif()
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if(NOT CMAKE_${lang}_COMPILER_TARGET)
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set(CMAKE_${lang}_COMPILER_TARGET "${_ANDROID_ABI_CLANG_TARGET}")
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if(CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED)
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string(APPEND CMAKE_${lang}_COMPILER_TARGET "${CMAKE_SYSTEM_VERSION}")
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endif()
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list(APPEND CMAKE_${lang}_COMPILER_PREDEFINES_COMMAND "--target=${CMAKE_${lang}_COMPILER_TARGET}")
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endif()
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endmacro()
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