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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
# When CMAKE_SYSTEM_NAME is "Android", CMakeSystemSpecificInitialize loads this
# module.
# Include the NDK hook.
# It can be used by NDK to inject necessary fixes for an earlier cmake.
if(CMAKE_ANDROID_NDK)
include(${CMAKE_ANDROID_NDK}/build/cmake/hooks/pre/Android-Initialize.cmake OPTIONAL)
endif()
# Support for NVIDIA Nsight Tegra Visual Studio Edition was previously
# implemented in the CMake VS IDE generators. Avoid interfering with
# that functionality for now.
if(CMAKE_VS_PLATFORM_NAME STREQUAL "Tegra-Android")
return()
endif()
# Commonly used Android toolchain files that pre-date CMake upstream support
# set CMAKE_SYSTEM_VERSION to 1. Avoid interfering with them.
if(CMAKE_SYSTEM_VERSION EQUAL 1)
return()
endif()
include(Platform/Linux-Initialize)
unset(LINUX)
set(ANDROID 1)
set(CMAKE_BUILD_TYPE_INIT "RelWithDebInfo")
if(CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED)
# Tell CMake not to search host sysroots for headers/libraries.
# All paths added to CMAKE_SYSTEM_*_PATH below will be rerooted under
# CMAKE_FIND_ROOT_PATH. This is set because:
# 1. Users may structure their libraries in a way similar to NDK. When they do that,
# they can simply append another path to CMAKE_FIND_ROOT_PATH.
# 2. CMAKE_FIND_ROOT_PATH must be non-empty for CMAKE_FIND_ROOT_PATH_MODE_* == ONLY
# to be meaningful. https://github.com/android-ndk/ndk/issues/890
list(APPEND CMAKE_FIND_ROOT_PATH "${CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED}/sysroot")
# 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 DEFINED CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
endif()
if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
endif()
if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
endif()
if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
endif()
# Allows CMake to find headers in the architecture-specific include directories.
set(CMAKE_LIBRARY_ARCHITECTURE "${CMAKE_ANDROID_ARCH_TRIPLE}")
# Instructs CMake to search the correct API level for libraries.
# Besides the paths like <root>/<prefix>/lib/<arch>, cmake also searches <root>/<prefix>.
# So we can add the API level specific directory directly.
# https://github.com/android/ndk/issues/929
list(PREPEND CMAKE_SYSTEM_PREFIX_PATH
"/usr/lib/${CMAKE_LIBRARY_ARCHITECTURE}/${CMAKE_SYSTEM_VERSION}"
)
list(APPEND CMAKE_SYSTEM_PROGRAM_PATH "${CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED}/bin")
endif()
# Skip sysroot selection if the NDK has a unified toolchain.
if(CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED)
return()
endif()
# Natively compiling on an Android host doesn't use the NDK cross-compilation
# tools.
if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Android")
return()
endif()
if(NOT CMAKE_SYSROOT)
if(CMAKE_ANDROID_NDK)
set(CMAKE_SYSROOT "${CMAKE_ANDROID_NDK}/platforms/android-${CMAKE_SYSTEM_VERSION}/arch-${CMAKE_ANDROID_ARCH}")
if(NOT CMAKE_ANDROID_NDK_DEPRECATED_HEADERS)
set(CMAKE_SYSROOT_COMPILE "${CMAKE_ANDROID_NDK}/sysroot")
endif()
elseif(CMAKE_ANDROID_STANDALONE_TOOLCHAIN)
set(CMAKE_SYSROOT "${CMAKE_ANDROID_STANDALONE_TOOLCHAIN}/sysroot")
endif()
endif()
if(CMAKE_SYSROOT)
if(NOT IS_DIRECTORY "${CMAKE_SYSROOT}")
message(FATAL_ERROR
"Android: The system root directory needed for the selected Android version and architecture does not exist:\n"
" ${CMAKE_SYSROOT}\n"
)
endif()
else()
message(FATAL_ERROR
"Android: No CMAKE_SYSROOT was selected."
)
endif()
# Include the NDK hook.
# It can be used by NDK to inject necessary fixes for an earlier cmake.
if(CMAKE_ANDROID_NDK)
include(${CMAKE_ANDROID_NDK}/build/cmake/hooks/post/Android-Initialize.cmake OPTIONAL)
endif()
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