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# Toolchain config for iOS.
#
# Usage:
# mkdir build; cd build
# cmake ..; make
# mkdir ios; cd ios
# cmake -DLLVM_IOS_TOOLCHAIN_DIR=/path/to/ios/ndk \
# -DCMAKE_TOOLCHAIN_FILE=../../cmake/platforms/iOS.cmake ../..
# make <target>
SET(CMAKE_SYSTEM_NAME Darwin)
SET(CMAKE_SYSTEM_VERSION 13)
SET(CMAKE_CXX_COMPILER_WORKS True)
SET(CMAKE_C_COMPILER_WORKS True)
SET(DARWIN_TARGET_OS_NAME ios)
IF(NOT DEFINED ENV{SDKROOT})
MESSAGE(FATAL_ERROR "SDKROOT env var must be set: " $ENV{SDKROOT})
ENDIF()
IF(EXISTS $ENV{SDKROOT})
SET(SDKROOT $ENV{SDKROOT})
ELSE()
execute_process(COMMAND xcodebuild -version -sdk $ENV{SDKROOT} Path
OUTPUT_VARIABLE SDKROOT
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
ENDIF()
IF(NOT CMAKE_C_COMPILER)
execute_process(COMMAND xcrun -sdk $ENV{SDKROOT} -find clang
OUTPUT_VARIABLE CMAKE_C_COMPILER
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
message(STATUS "Using c compiler ${CMAKE_C_COMPILER}")
ENDIF()
IF(NOT CMAKE_CXX_COMPILER)
execute_process(COMMAND xcrun -sdk $ENV{SDKROOT} -find clang++
OUTPUT_VARIABLE CMAKE_CXX_COMPILER
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
message(STATUS "Using c compiler ${CMAKE_CXX_COMPILER}")
ENDIF()
IF(NOT CMAKE_AR)
execute_process(COMMAND xcrun -sdk $ENV{SDKROOT} -find ar
OUTPUT_VARIABLE CMAKE_AR_val
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
SET(CMAKE_AR ${CMAKE_AR_val} CACHE FILEPATH "Archiver")
message(STATUS "Using ar ${CMAKE_AR}")
ENDIF()
IF (NOT DEFINED IOS_MIN_TARGET)
execute_process(COMMAND xcodebuild -sdk $ENV{SDKROOT} -version SDKVersion
OUTPUT_VARIABLE IOS_MIN_TARGET
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
ENDIF()
SET(IOS_COMMON_FLAGS "-mios-version-min=${IOS_MIN_TARGET}")
SET(CMAKE_C_FLAGS "${IOS_COMMON_FLAGS}" CACHE STRING "toolchain_cflags" FORCE)
SET(CMAKE_CXX_FLAGS "${IOS_COMMON_FLAGS}" CACHE STRING "toolchain_cxxflags" FORCE)
SET(CMAKE_LINK_FLAGS "${IOS_COMMON_FLAGS}" CACHE STRING "toolchain_linkflags" FORCE)
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