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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.
if(CMAKE_OBJC_COMPILER_FORCED)
# The compiler configuration was forced by the user.
# Assume the user has configured all compiler information.
set(CMAKE_OBJC_COMPILER_WORKS TRUE)
return()
endif()
include(CMakeTestCompilerCommon)
# work around enforced code signing and / or missing executable target type
set(__CMAKE_SAVED_TRY_COMPILE_TARGET_TYPE ${CMAKE_TRY_COMPILE_TARGET_TYPE})
if(_CMAKE_FEATURE_DETECTION_TARGET_TYPE)
set(CMAKE_TRY_COMPILE_TARGET_TYPE ${_CMAKE_FEATURE_DETECTION_TARGET_TYPE})
endif()
# Remove any cached result from an older CMake version.
# We now store this in CMakeCCompiler.cmake.
unset(CMAKE_OBJC_COMPILER_WORKS CACHE)
# Try to identify the ABI and configure it into CMakeOBJCCompiler.cmake
include(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerABI.cmake)
CMAKE_DETERMINE_COMPILER_ABI(OBJC ${CMAKE_ROOT}/Modules/CMakeOBJCCompilerABI.m)
if(CMAKE_OBJC_ABI_COMPILED)
# The compiler worked so skip dedicated test below.
set(CMAKE_OBJC_COMPILER_WORKS TRUE)
message(STATUS "Check for working OBJC compiler: ${CMAKE_OBJC_COMPILER} - skipped")
endif()
# This file is used by EnableLanguage in cmGlobalGenerator to
# determine that that selected Objective-C compiler can actually compile
# and link the most basic of programs. If not, a fatal error
# is set and cmake stops processing commands and will not generate
# any makefiles or projects.
if(NOT CMAKE_OBJC_COMPILER_WORKS)
PrintTestCompilerStatus("OBJC")
__TestCompiler_setTryCompileTargetType()
file(WRITE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testOBJCCompiler.m
"#ifdef __cplusplus\n"
"# error \"The CMAKE_OBJC_COMPILER is set to a C++ compiler\"\n"
"#endif\n"
"#ifndef __OBJC__\n"
"# error \"The CMAKE_OBJC_COMPILER is not an Objective-C compiler\"\n"
"#endif\n"
"int main(int argc, char* argv[])\n"
"{ (void)argv; return argc-1;}\n")
# Clear result from normal variable.
unset(CMAKE_OBJC_COMPILER_WORKS)
# Puts test result in cache variable.
try_compile(CMAKE_OBJC_COMPILER_WORKS
SOURCES ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testOBJCCompiler.m
OUTPUT_VARIABLE __CMAKE_OBJC_COMPILER_OUTPUT)
# Move result from cache to normal variable.
set(CMAKE_OBJC_COMPILER_WORKS ${CMAKE_OBJC_COMPILER_WORKS})
unset(CMAKE_OBJC_COMPILER_WORKS CACHE)
__TestCompiler_restoreTryCompileTargetType()
if(NOT CMAKE_OBJC_COMPILER_WORKS)
PrintTestCompilerResult(CHECK_FAIL "broken")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Determining if the Objective-C compiler works failed with "
"the following output:\n${__CMAKE_OBJC_COMPILER_OUTPUT}\n\n")
string(REPLACE "\n" "\n " _output "${__CMAKE_OBJC_COMPILER_OUTPUT}")
message(FATAL_ERROR "The Objective-C compiler\n \"${CMAKE_OBJC_COMPILER}\"\n"
"is not able to compile a simple test program.\nIt fails "
"with the following output:\n ${_output}\n\n"
"CMake will not be able to correctly generate this project.")
endif()
PrintTestCompilerResult(CHECK_PASS "works")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
"Determining if the Objective-C compiler works passed with "
"the following output:\n${__CMAKE_OBJC_COMPILER_OUTPUT}\n\n")
endif()
# Try to identify the compiler features
include(${CMAKE_ROOT}/Modules/CMakeDetermineCompileFeatures.cmake)
CMAKE_DETERMINE_COMPILE_FEATURES(OBJC)
# Re-configure to save learned information.
configure_file(
${CMAKE_ROOT}/Modules/CMakeOBJCCompiler.cmake.in
${CMAKE_PLATFORM_INFO_DIR}/CMakeOBJCCompiler.cmake
@ONLY
)
include(${CMAKE_PLATFORM_INFO_DIR}/CMakeOBJCCompiler.cmake)
if(CMAKE_OBJC_SIZEOF_DATA_PTR)
foreach(f ${CMAKE_OBJC_ABI_FILES})
include(${f})
endforeach()
unset(CMAKE_OBJC_ABI_FILES)
endif()
set(CMAKE_TRY_COMPILE_TARGET_TYPE ${__CMAKE_SAVED_TRY_COMPILE_TARGET_TYPE})
unset(__CMAKE_SAVED_TRY_COMPILE_TARGET_TYPE)
unset(__CMAKE_OBJC_COMPILER_OUTPUT)
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