94 lines
3.9 KiB
CMake
94 lines
3.9 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
|
|
# file Copyright.txt or https://cmake.org/licensing for details.
|
|
|
|
|
|
if(CMAKE_OBJCXX_COMPILER_FORCED)
|
|
# The compiler configuration was forced by the user.
|
|
# Assume the user has configured all compiler information.
|
|
set(CMAKE_OBJCXX_COMPILER_WORKS TRUE)
|
|
return()
|
|
endif()
|
|
|
|
include(CMakeTestCompilerCommon)
|
|
|
|
# work around enforced code signing and / or missing exectuable 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 ${_CMAKE_FEATURE_DETECTION_TARGET_TYPE})
|
|
endif()
|
|
|
|
# Remove any cached result from an older CMake version.
|
|
# We now store this in CMakeOBJCXXCompiler.cmake.
|
|
unset(CMAKE_OBJCXX_COMPILER_WORKS CACHE)
|
|
|
|
# Try to identify the ABI and configure it into CMakeOBJCXXCompiler.cmake
|
|
include(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerABI.cmake)
|
|
CMAKE_DETERMINE_COMPILER_ABI(OBJCXX ${CMAKE_ROOT}/Modules/CMakeOBJCXXCompilerABI.mm)
|
|
if(CMAKE_OBJCXX_ABI_COMPILED)
|
|
# The compiler worked so skip dedicated test below.
|
|
set(CMAKE_OBJCXX_COMPILER_WORKS TRUE)
|
|
message(STATUS "Check for working OBJCXX compiler: ${CMAKE_OBJCXX_COMPILER} - skipped")
|
|
endif()
|
|
|
|
# This file is used by EnableLanguage in cmGlobalGenerator to
|
|
# determine that the 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_OBJCXX_COMPILER_WORKS)
|
|
PrintTestCompilerStatus("OBJCXX")
|
|
__TestCompiler_setTryCompileTargetType()
|
|
file(WRITE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testOBJCXXCompiler.mm
|
|
"#ifndef __cplusplus\n"
|
|
"# error \"The CMAKE_OBJCXX_COMPILER is set to a C compiler\"\n"
|
|
"#endif\n"
|
|
"#ifndef __OBJC__\n"
|
|
"# error \"The CMAKE_OBJCXX_COMPILER is not an Objective-C++ compiler\"\n"
|
|
"#endif\n"
|
|
"int main(){return 0;}\n")
|
|
try_compile(CMAKE_OBJCXX_COMPILER_WORKS ${CMAKE_BINARY_DIR}
|
|
${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testOBJCXXCompiler.mm
|
|
OUTPUT_VARIABLE __CMAKE_OBJCXX_COMPILER_OUTPUT)
|
|
# Move result from cache to normal variable.
|
|
set(CMAKE_OBJCXX_COMPILER_WORKS ${CMAKE_OBJCXX_COMPILER_WORKS})
|
|
unset(CMAKE_OBJCXX_COMPILER_WORKS CACHE)
|
|
__TestCompiler_restoreTryCompileTargetType()
|
|
if(NOT CMAKE_OBJCXX_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${__CMAKE_OBJCXX_COMPILER_OUTPUT}\n\n")
|
|
string(REPLACE "\n" "\n " _output "${__CMAKE_OBJCXX_COMPILER_OUTPUT}")
|
|
message(FATAL_ERROR "The Objective-C++ compiler\n \"${CMAKE_OBJCXX_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${__CMAKE_OBJCXX_COMPILER_OUTPUT}\n\n")
|
|
endif()
|
|
|
|
# Try to identify the compiler features
|
|
include(${CMAKE_ROOT}/Modules/CMakeDetermineCompileFeatures.cmake)
|
|
CMAKE_DETERMINE_COMPILE_FEATURES(OBJCXX)
|
|
|
|
# Re-configure to save learned information.
|
|
configure_file(
|
|
${CMAKE_ROOT}/Modules/CMakeOBJCXXCompiler.cmake.in
|
|
${CMAKE_PLATFORM_INFO_DIR}/CMakeOBJCXXCompiler.cmake
|
|
@ONLY
|
|
)
|
|
include(${CMAKE_PLATFORM_INFO_DIR}/CMakeOBJCXXCompiler.cmake)
|
|
|
|
if(CMAKE_OBJCXX_SIZEOF_DATA_PTR)
|
|
foreach(f ${CMAKE_OBJCXX_ABI_FILES})
|
|
include(${f})
|
|
endforeach()
|
|
unset(CMAKE_OBJCXX_ABI_FILES)
|
|
endif()
|
|
|
|
set(CMAKE_TRY_COMPILE_TARGET_TYPE ${__CMAKE_SAVED_TRY_COMPILE_TARGET_TYPE})
|
|
unset(__CMAKE_SAVED_TRY_COMPILE_TARGET_TYPE)
|
|
unset(__CMAKE_OBJCXX_COMPILER_OUTPUT)
|