diff options
Diffstat (limited to 'Modules/Platform/Android-Initialize.cmake')
| -rw-r--r-- | Modules/Platform/Android-Initialize.cmake | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/Modules/Platform/Android-Initialize.cmake b/Modules/Platform/Android-Initialize.cmake index 6116ae1c80..50f06209f1 100644 --- a/Modules/Platform/Android-Initialize.cmake +++ b/Modules/Platform/Android-Initialize.cmake @@ -25,6 +25,56 @@ endif() 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 "${CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED}/sysroot") + + # Allow users to override these values in case they want more strict behaviors. + # For example, they may want to prevent the NDK's libz from being picked up so + # they can use their own. + # https://github.com/android-ndk/ndk/issues/517 + if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_PROGRAM) + set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER) + endif() + + if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_LIBRARY) + set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY) + endif() + + if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_INCLUDE) + set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY) + endif() + + if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_PACKAGE) + set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY) + endif() + + # Don't search paths in PATH environment variable. + if(NOT DEFINED CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH) + set(CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH OFF) + endif() + + # Allows CMake to find headers in the architecture-specific include directories. + set(CMAKE_LIBRARY_ARCHITECTURE "${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() |