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118 lines
4.2 KiB
118 lines
4.2 KiB
# 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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# When CMAKE_SYSTEM_NAME is "Android", CMakeSystemSpecificInitialize loads this
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# module.
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# Include the NDK hook.
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# It can be used by NDK to inject necessary fixes for an earlier cmake.
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if(CMAKE_ANDROID_NDK)
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include(${CMAKE_ANDROID_NDK}/build/cmake/hooks/pre/Android-Initialize.cmake OPTIONAL)
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endif()
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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.
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if(CMAKE_VS_PLATFORM_NAME STREQUAL "Tegra-Android")
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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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return()
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endif()
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set(CMAKE_BUILD_TYPE_INIT "RelWithDebInfo")
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if(CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED)
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# Tell CMake not to search host sysroots for headers/libraries.
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# All paths added to CMAKE_SYSTEM_*_PATH below will be rerooted under
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# CMAKE_FIND_ROOT_PATH. This is set because:
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# 1. Users may structure their libraries in a way similar to NDK. When they do that,
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# they can simply append another path to CMAKE_FIND_ROOT_PATH.
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# 2. CMAKE_FIND_ROOT_PATH must be non-empty for CMAKE_FIND_ROOT_PATH_MODE_* == ONLY
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# to be meaningful. https://github.com/android-ndk/ndk/issues/890
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list(APPEND CMAKE_FIND_ROOT_PATH "${CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED}/sysroot")
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# Allow users to override these values in case they want more strict behaviors.
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# For example, they may want to prevent the NDK's libz from being picked up so
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# they can use their own.
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# https://github.com/android-ndk/ndk/issues/517
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if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
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set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
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endif()
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if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
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set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
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endif()
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if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
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set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
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endif()
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if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
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set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
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endif()
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# Don't search paths in PATH environment variable.
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if(NOT DEFINED CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH)
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set(CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH OFF)
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endif()
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# Allows CMake to find headers in the architecture-specific include directories.
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set(CMAKE_LIBRARY_ARCHITECTURE "${CMAKE_ANDROID_ARCH_TRIPLE}")
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# Instructs CMake to search the correct API level for libraries.
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# Besides the paths like <root>/<prefix>/lib/<arch>, cmake also searches <root>/<prefix>.
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# So we can add the API level specific directory directly.
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# https://github.com/android/ndk/issues/929
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list(PREPEND CMAKE_SYSTEM_PREFIX_PATH
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"/usr/lib/${CMAKE_LIBRARY_ARCHITECTURE}/${CMAKE_SYSTEM_VERSION}"
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)
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list(APPEND CMAKE_SYSTEM_PROGRAM_PATH "${CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED}/bin")
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endif()
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# Skip sysroot selection if the NDK has a unified toolchain.
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if(CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED)
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return()
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endif()
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# Natively compiling on an Android host doesn't use the NDK cross-compilation
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# tools.
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if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Android")
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return()
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endif()
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if(NOT CMAKE_SYSROOT)
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if(CMAKE_ANDROID_NDK)
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set(CMAKE_SYSROOT "${CMAKE_ANDROID_NDK}/platforms/android-${CMAKE_SYSTEM_VERSION}/arch-${CMAKE_ANDROID_ARCH}")
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if(NOT CMAKE_ANDROID_NDK_DEPRECATED_HEADERS)
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set(CMAKE_SYSROOT_COMPILE "${CMAKE_ANDROID_NDK}/sysroot")
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endif()
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elseif(CMAKE_ANDROID_STANDALONE_TOOLCHAIN)
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set(CMAKE_SYSROOT "${CMAKE_ANDROID_STANDALONE_TOOLCHAIN}/sysroot")
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endif()
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endif()
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if(CMAKE_SYSROOT)
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if(NOT IS_DIRECTORY "${CMAKE_SYSROOT}")
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message(FATAL_ERROR
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"Android: The system root directory needed for the selected Android version and architecture does not exist:\n"
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" ${CMAKE_SYSROOT}\n"
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)
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endif()
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else()
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message(FATAL_ERROR
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"Android: No CMAKE_SYSROOT was selected."
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)
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endif()
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# Include the NDK hook.
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# It can be used by NDK to inject necessary fixes for an earlier cmake.
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if(CMAKE_ANDROID_NDK)
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include(${CMAKE_ANDROID_NDK}/build/cmake/hooks/post/Android-Initialize.cmake OPTIONAL)
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endif()
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