493 lines
20 KiB
CMake
493 lines
20 KiB
CMake
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#=============================================================================
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# Copyright 2007-2009 Kitware, Inc.
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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# License text for the above reference.)
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# Function to compile a source file to identify the compiler. This is
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# used internally by CMake and should not be included by user code.
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# If successful, sets CMAKE_<lang>_COMPILER_ID and CMAKE_<lang>_PLATFORM_ID
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function(CMAKE_DETERMINE_COMPILER_ID lang flagvar src)
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# Make sure the compiler arguments are clean.
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string(STRIP "${CMAKE_${lang}_COMPILER_ARG1}" CMAKE_${lang}_COMPILER_ID_ARG1)
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string(REGEX REPLACE " +" ";" CMAKE_${lang}_COMPILER_ID_ARG1 "${CMAKE_${lang}_COMPILER_ID_ARG1}")
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# Make sure user-specified compiler flags are used.
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if(CMAKE_${lang}_FLAGS)
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set(CMAKE_${lang}_COMPILER_ID_FLAGS ${CMAKE_${lang}_FLAGS})
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else()
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set(CMAKE_${lang}_COMPILER_ID_FLAGS $ENV{${flagvar}})
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endif()
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string(REGEX REPLACE " " ";" CMAKE_${lang}_COMPILER_ID_FLAGS_LIST "${CMAKE_${lang}_COMPILER_ID_FLAGS}")
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# Compute the directory in which to run the test.
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set(CMAKE_${lang}_COMPILER_ID_DIR ${CMAKE_PLATFORM_INFO_DIR}/CompilerId${lang})
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# Try building with no extra flags and then try each set
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# of helper flags. Stop when the compiler is identified.
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foreach(flags "" ${CMAKE_${lang}_COMPILER_ID_TEST_FLAGS})
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if(NOT CMAKE_${lang}_COMPILER_ID)
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CMAKE_DETERMINE_COMPILER_ID_BUILD("${lang}" "${flags}" "${src}")
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foreach(file ${COMPILER_${lang}_PRODUCED_FILES})
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CMAKE_DETERMINE_COMPILER_ID_CHECK("${lang}" "${CMAKE_${lang}_COMPILER_ID_DIR}/${file}" "${src}")
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endforeach()
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endif()
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endforeach()
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# If the compiler is still unknown, try to query its vendor.
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if(NOT CMAKE_${lang}_COMPILER_ID)
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CMAKE_DETERMINE_COMPILER_ID_VENDOR(${lang})
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endif()
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# if the format is unknown after all files have been checked, put "Unknown" in the cache
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if(NOT CMAKE_EXECUTABLE_FORMAT)
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set(CMAKE_EXECUTABLE_FORMAT "Unknown" CACHE INTERNAL "Executable file format")
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endif()
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# Display the final identification result.
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if(CMAKE_${lang}_COMPILER_ID)
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if(CMAKE_${lang}_COMPILER_VERSION)
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set(_version " ${CMAKE_${lang}_COMPILER_VERSION}")
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else()
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set(_version "")
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endif()
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message(STATUS "The ${lang} compiler identification is "
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"${CMAKE_${lang}_COMPILER_ID}${_version}")
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else()
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message(STATUS "The ${lang} compiler identification is unknown")
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endif()
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# Check if compiler id detection gave us the compiler tool.
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if(NOT CMAKE_${lang}_COMPILER)
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if(CMAKE_${lang}_COMPILER_ID_TOOL)
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set(CMAKE_${lang}_COMPILER "${CMAKE_${lang}_COMPILER_ID_TOOL}" PARENT_SCOPE)
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else()
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set(CMAKE_${lang}_COMPILER "CMAKE_${lang}_COMPILER-NOTFOUND" PARENT_SCOPE)
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endif()
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endif()
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set(CMAKE_${lang}_COMPILER_ID "${CMAKE_${lang}_COMPILER_ID}" PARENT_SCOPE)
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set(CMAKE_${lang}_PLATFORM_ID "${CMAKE_${lang}_PLATFORM_ID}" PARENT_SCOPE)
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set(MSVC_${lang}_ARCHITECTURE_ID "${MSVC_${lang}_ARCHITECTURE_ID}"
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PARENT_SCOPE)
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set(CMAKE_${lang}_COMPILER_VERSION "${CMAKE_${lang}_COMPILER_VERSION}" PARENT_SCOPE)
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set(CMAKE_${lang}_SIMULATE_ID "${CMAKE_${lang}_SIMULATE_ID}" PARENT_SCOPE)
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set(CMAKE_${lang}_SIMULATE_VERSION "${CMAKE_${lang}_SIMULATE_VERSION}" PARENT_SCOPE)
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endfunction()
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#-----------------------------------------------------------------------------
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# Function to write the compiler id source file.
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function(CMAKE_DETERMINE_COMPILER_ID_WRITE lang src)
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file(READ ${CMAKE_ROOT}/Modules/${src}.in ID_CONTENT_IN)
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string(CONFIGURE "${ID_CONTENT_IN}" ID_CONTENT_OUT @ONLY)
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file(WRITE ${CMAKE_${lang}_COMPILER_ID_DIR}/${src} "${ID_CONTENT_OUT}")
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endfunction()
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#-----------------------------------------------------------------------------
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# Function to build the compiler id source file and look for output
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# files.
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function(CMAKE_DETERMINE_COMPILER_ID_BUILD lang testflags src)
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# Create a clean working directory.
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file(REMOVE_RECURSE ${CMAKE_${lang}_COMPILER_ID_DIR})
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file(MAKE_DIRECTORY ${CMAKE_${lang}_COMPILER_ID_DIR})
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CMAKE_DETERMINE_COMPILER_ID_WRITE("${lang}" "${src}")
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# Construct a description of this test case.
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set(COMPILER_DESCRIPTION
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"Compiler: ${CMAKE_${lang}_COMPILER} ${CMAKE_${lang}_COMPILER_ID_ARG1}
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Build flags: ${CMAKE_${lang}_COMPILER_ID_FLAGS_LIST}
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Id flags: ${testflags}
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")
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# Compile the compiler identification source.
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if("${CMAKE_GENERATOR}" MATCHES "Visual Studio ([0-9]+)")
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set(vs_version ${CMAKE_MATCH_1})
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set(id_platform ${CMAKE_VS_PLATFORM_NAME})
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set(id_lang "${lang}")
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set(id_cl cl.exe)
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if(NOT "${vs_version}" VERSION_LESS 10)
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set(v 10)
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set(ext vcxproj)
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elseif(NOT "${vs_version}" VERSION_LESS 7)
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set(id_version ${vs_version}.00)
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set(v 7)
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set(ext vcproj)
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else()
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set(v 6)
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set(ext dsp)
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endif()
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if("${id_platform}" STREQUAL "Itanium")
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set(id_platform ia64)
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endif()
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if(CMAKE_VS_PLATFORM_TOOLSET)
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set(id_toolset "<PlatformToolset>${CMAKE_VS_PLATFORM_TOOLSET}</PlatformToolset>")
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else()
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set(id_toolset "")
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endif()
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if(CMAKE_VS_WINCE_VERSION)
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set(id_entrypoint "mainACRTStartup")
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if("${vs_version}" VERSION_LESS 9)
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set(id_subsystem 9)
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else()
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set(id_subsystem 8)
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endif()
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else()
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set(id_subsystem 1)
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endif()
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if("${CMAKE_MAKE_PROGRAM}" MATCHES "[Mm][Ss][Bb][Uu][Ii][Ll][Dd]")
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set(build /p:Configuration=Debug /p:Platform=@id_platform@ /p:VisualStudioVersion=${vs_version}.0)
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elseif("${CMAKE_MAKE_PROGRAM}" MATCHES "[Mm][Ss][Dd][Ee][Vv]")
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set(build /make)
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else()
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set(build /build Debug)
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endif()
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set(id_dir ${CMAKE_${lang}_COMPILER_ID_DIR})
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get_filename_component(id_src "${src}" NAME)
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configure_file(${CMAKE_ROOT}/Modules/CompilerId/VS-${v}.${ext}.in
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${id_dir}/CompilerId${lang}.${ext} @ONLY IMMEDIATE)
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execute_process(
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COMMAND ${CMAKE_MAKE_PROGRAM} CompilerId${lang}.${ext} ${build}
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WORKING_DIRECTORY ${CMAKE_${lang}_COMPILER_ID_DIR}
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OUTPUT_VARIABLE CMAKE_${lang}_COMPILER_ID_OUTPUT
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ERROR_VARIABLE CMAKE_${lang}_COMPILER_ID_OUTPUT
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RESULT_VARIABLE CMAKE_${lang}_COMPILER_ID_RESULT
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)
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# Match the compiler location line printed out.
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if("${CMAKE_${lang}_COMPILER_ID_OUTPUT}" MATCHES "CMAKE_${lang}_COMPILER=([^%\r\n]+)[\r\n]")
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set(_comp "${CMAKE_MATCH_1}")
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if(EXISTS "${_comp}")
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file(TO_CMAKE_PATH "${_comp}" _comp)
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set(CMAKE_${lang}_COMPILER_ID_TOOL "${_comp}" PARENT_SCOPE)
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endif()
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endif()
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elseif("${CMAKE_GENERATOR}" MATCHES "Xcode")
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set(id_lang "${lang}")
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set(id_type ${CMAKE_${lang}_COMPILER_XCODE_TYPE})
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set(id_dir ${CMAKE_${lang}_COMPILER_ID_DIR})
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get_filename_component(id_src "${src}" NAME)
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if(CMAKE_XCODE_PLATFORM_TOOLSET)
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set(id_toolset "GCC_VERSION = ${CMAKE_XCODE_PLATFORM_TOOLSET};")
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else()
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set(id_toolset "")
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endif()
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if(NOT ${XCODE_VERSION} VERSION_LESS 3)
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set(v 3)
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set(ext xcodeproj)
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elseif(NOT ${XCODE_VERSION} VERSION_LESS 2)
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set(v 2)
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set(ext xcodeproj)
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else()
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set(v 1)
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set(ext xcode)
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endif()
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configure_file(${CMAKE_ROOT}/Modules/CompilerId/Xcode-${v}.pbxproj.in
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${id_dir}/CompilerId${lang}.${ext}/project.pbxproj @ONLY IMMEDIATE)
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unset(_ENV_MACOSX_DEPLOYMENT_TARGET)
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if(DEFINED ENV{MACOSX_DEPLOYMENT_TARGET})
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set(_ENV_MACOSX_DEPLOYMENT_TARGET "$ENV{MACOSX_DEPLOYMENT_TARGET}")
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set(ENV{MACOSX_DEPLOYMENT_TARGET} "")
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endif()
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execute_process(COMMAND xcodebuild
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WORKING_DIRECTORY ${CMAKE_${lang}_COMPILER_ID_DIR}
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OUTPUT_VARIABLE CMAKE_${lang}_COMPILER_ID_OUTPUT
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ERROR_VARIABLE CMAKE_${lang}_COMPILER_ID_OUTPUT
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RESULT_VARIABLE CMAKE_${lang}_COMPILER_ID_RESULT
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)
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if(DEFINED _ENV_MACOSX_DEPLOYMENT_TARGET)
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set(ENV{MACOSX_DEPLOYMENT_TARGET} "${_ENV_MACOSX_DEPLOYMENT_TARGET}")
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endif()
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# Match the link line from xcodebuild output of the form
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# Ld ...
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# ...
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# /path/to/cc ...CompilerId${lang}/...
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# to extract the compiler front-end for the language.
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if("${CMAKE_${lang}_COMPILER_ID_OUTPUT}" MATCHES "\nLd[^\n]*(\n[ \t]+[^\n]*)*\n[ \t]+([^ \t\r\n]+)[^\r\n]*-o[^\r\n]*CompilerId${lang}/\\./CompilerId${lang}[ \t\n\\\"]")
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set(_comp "${CMAKE_MATCH_2}")
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if(EXISTS "${_comp}")
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set(CMAKE_${lang}_COMPILER_ID_TOOL "${_comp}" PARENT_SCOPE)
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endif()
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endif()
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else()
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if(COMMAND EXECUTE_PROCESS)
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execute_process(
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COMMAND ${CMAKE_${lang}_COMPILER}
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${CMAKE_${lang}_COMPILER_ID_ARG1}
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${CMAKE_${lang}_COMPILER_ID_FLAGS_LIST}
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${testflags}
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"${src}"
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WORKING_DIRECTORY ${CMAKE_${lang}_COMPILER_ID_DIR}
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OUTPUT_VARIABLE CMAKE_${lang}_COMPILER_ID_OUTPUT
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ERROR_VARIABLE CMAKE_${lang}_COMPILER_ID_OUTPUT
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RESULT_VARIABLE CMAKE_${lang}_COMPILER_ID_RESULT
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)
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else()
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exec_program(
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${CMAKE_${lang}_COMPILER} ${CMAKE_${lang}_COMPILER_ID_DIR}
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ARGS ${CMAKE_${lang}_COMPILER_ID_ARG1}
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${CMAKE_${lang}_COMPILER_ID_FLAGS_LIST}
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${testflags}
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\"${src}\"
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OUTPUT_VARIABLE CMAKE_${lang}_COMPILER_ID_OUTPUT
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RETURN_VALUE CMAKE_${lang}_COMPILER_ID_RESULT
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)
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endif()
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endif()
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# Check the result of compilation.
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if(CMAKE_${lang}_COMPILER_ID_RESULT)
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# Compilation failed.
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set(MSG
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"Compiling the ${lang} compiler identification source file \"${src}\" failed.
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${COMPILER_DESCRIPTION}
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The output was:
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${CMAKE_${lang}_COMPILER_ID_RESULT}
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${CMAKE_${lang}_COMPILER_ID_OUTPUT}
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")
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log "${MSG}")
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#if(NOT CMAKE_${lang}_COMPILER_ID_ALLOW_FAIL)
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# message(FATAL_ERROR "${MSG}")
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#endif()
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# No output files should be inspected.
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set(COMPILER_${lang}_PRODUCED_FILES)
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else()
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# Compilation succeeded.
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Compiling the ${lang} compiler identification source file \"${src}\" succeeded.
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${COMPILER_DESCRIPTION}
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The output was:
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${CMAKE_${lang}_COMPILER_ID_RESULT}
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${CMAKE_${lang}_COMPILER_ID_OUTPUT}
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")
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# Find the executable produced by the compiler, try all files in the
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# binary dir.
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file(GLOB files
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RELATIVE ${CMAKE_${lang}_COMPILER_ID_DIR}
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${CMAKE_${lang}_COMPILER_ID_DIR}/*)
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list(REMOVE_ITEM files "${src}")
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set(COMPILER_${lang}_PRODUCED_FILES "")
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foreach(file ${files})
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if(NOT IS_DIRECTORY ${CMAKE_${lang}_COMPILER_ID_DIR}/${file})
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list(APPEND COMPILER_${lang}_PRODUCED_FILES ${file})
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Compilation of the ${lang} compiler identification source \""
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"${src}\" produced \"${file}\"\n\n")
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endif()
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endforeach()
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if(NOT COMPILER_${lang}_PRODUCED_FILES)
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# No executable was found.
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Compilation of the ${lang} compiler identification source \""
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"${src}\" did not produce an executable in \""
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"${CMAKE_${lang}_COMPILER_ID_DIR}\".\n\n")
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endif()
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endif()
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# Return the files produced by the compilation.
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set(COMPILER_${lang}_PRODUCED_FILES "${COMPILER_${lang}_PRODUCED_FILES}" PARENT_SCOPE)
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endfunction()
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#-----------------------------------------------------------------------------
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# Function to extract the compiler id from an executable.
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function(CMAKE_DETERMINE_COMPILER_ID_CHECK lang file)
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# Look for a compiler id if not yet known.
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if(NOT CMAKE_${lang}_COMPILER_ID)
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# Read the compiler identification string from the executable file.
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set(COMPILER_ID)
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set(COMPILER_VERSION)
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set(PLATFORM_ID)
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set(ARCHITECTURE_ID)
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set(SIMULATE_ID)
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set(SIMULATE_VERSION)
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file(STRINGS ${file}
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CMAKE_${lang}_COMPILER_ID_STRINGS LIMIT_COUNT 6 REGEX "INFO:")
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set(COMPILER_ID_TWICE)
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foreach(info ${CMAKE_${lang}_COMPILER_ID_STRINGS})
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if("${info}" MATCHES ".*INFO:compiler\\[([^]\"]*)\\].*")
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if(COMPILER_ID)
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set(COMPILER_ID_TWICE 1)
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endif()
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string(REGEX REPLACE ".*INFO:compiler\\[([^]]*)\\].*" "\\1"
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COMPILER_ID "${info}")
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endif()
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if("${info}" MATCHES ".*INFO:platform\\[([^]\"]*)\\].*")
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string(REGEX REPLACE ".*INFO:platform\\[([^]]*)\\].*" "\\1"
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PLATFORM_ID "${info}")
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endif()
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if("${info}" MATCHES ".*INFO:arch\\[([^]\"]*)\\].*")
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string(REGEX REPLACE ".*INFO:arch\\[([^]]*)\\].*" "\\1"
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ARCHITECTURE_ID "${info}")
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endif()
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if("${info}" MATCHES ".*INFO:compiler_version\\[([^]\"]*)\\].*")
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string(REGEX REPLACE ".*INFO:compiler_version\\[([^]]*)\\].*" "\\1" COMPILER_VERSION "${info}")
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string(REGEX REPLACE "^0+([0-9])" "\\1" COMPILER_VERSION "${COMPILER_VERSION}")
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string(REGEX REPLACE "\\.0+([0-9])" ".\\1" COMPILER_VERSION "${COMPILER_VERSION}")
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endif()
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if("${info}" MATCHES ".*INFO:simulate\\[([^]\"]*)\\].*")
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set(SIMULATE_ID "${CMAKE_MATCH_1}")
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endif()
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if("${info}" MATCHES ".*INFO:simulate_version\\[([^]\"]*)\\].*")
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set(SIMULATE_VERSION "${CMAKE_MATCH_1}")
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string(REGEX REPLACE "^0+([0-9])" "\\1" SIMULATE_VERSION "${SIMULATE_VERSION}")
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string(REGEX REPLACE "\\.0+([0-9])" ".\\1" SIMULATE_VERSION "${SIMULATE_VERSION}")
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endif()
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endforeach()
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# Detect the exact architecture from the PE header.
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if(WIN32)
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# The offset to the PE signature is stored at 0x3c.
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file(READ ${file} peoffsethex LIMIT 1 OFFSET 60 HEX)
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string(SUBSTRING "${peoffsethex}" 0 1 peoffsethex1)
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string(SUBSTRING "${peoffsethex}" 1 1 peoffsethex2)
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set(peoffsetexpression "${peoffsethex1} * 16 + ${peoffsethex2}")
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string(REPLACE "a" "10" peoffsetexpression "${peoffsetexpression}")
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string(REPLACE "b" "11" peoffsetexpression "${peoffsetexpression}")
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string(REPLACE "c" "12" peoffsetexpression "${peoffsetexpression}")
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string(REPLACE "d" "13" peoffsetexpression "${peoffsetexpression}")
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string(REPLACE "e" "14" peoffsetexpression "${peoffsetexpression}")
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string(REPLACE "f" "15" peoffsetexpression "${peoffsetexpression}")
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math(EXPR peoffset "${peoffsetexpression}")
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file(READ ${file} peheader LIMIT 6 OFFSET ${peoffset} HEX)
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if(peheader STREQUAL "50450000a201")
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set(ARCHITECTURE_ID "SH3")
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elseif(peheader STREQUAL "50450000a301")
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set(ARCHITECTURE_ID "SH3DSP")
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elseif(peheader STREQUAL "50450000a601")
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set(ARCHITECTURE_ID "SH4")
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elseif(peheader STREQUAL "50450000a801")
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set(ARCHITECTURE_ID "SH5")
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elseif(peheader STREQUAL "50450000c201")
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set(ARCHITECTURE_ID "THUMB")
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endif()
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endif()
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# Check if a valid compiler and platform were found.
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if(COMPILER_ID AND NOT COMPILER_ID_TWICE)
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set(CMAKE_${lang}_COMPILER_ID "${COMPILER_ID}")
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set(CMAKE_${lang}_PLATFORM_ID "${PLATFORM_ID}")
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set(MSVC_${lang}_ARCHITECTURE_ID "${ARCHITECTURE_ID}")
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set(CMAKE_${lang}_COMPILER_VERSION "${COMPILER_VERSION}")
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set(CMAKE_${lang}_SIMULATE_ID "${SIMULATE_ID}")
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set(CMAKE_${lang}_SIMULATE_VERSION "${SIMULATE_VERSION}")
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endif()
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# Check the compiler identification string.
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if(CMAKE_${lang}_COMPILER_ID)
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# The compiler identification was found.
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"The ${lang} compiler identification is ${CMAKE_${lang}_COMPILER_ID}, found in \""
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"${file}\"\n\n")
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else()
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# The compiler identification could not be found.
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"The ${lang} compiler identification could not be found in \""
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"${file}\"\n\n")
|
|
endif()
|
|
endif()
|
|
|
|
# try to figure out the executable format: ELF, COFF, Mach-O
|
|
if(NOT CMAKE_EXECUTABLE_FORMAT)
|
|
file(READ ${file} CMAKE_EXECUTABLE_MAGIC LIMIT 4 HEX)
|
|
|
|
# ELF files start with 0x7f"ELF"
|
|
if("${CMAKE_EXECUTABLE_MAGIC}" STREQUAL "7f454c46")
|
|
set(CMAKE_EXECUTABLE_FORMAT "ELF" CACHE INTERNAL "Executable file format")
|
|
endif()
|
|
|
|
# # COFF (.exe) files start with "MZ"
|
|
# if("${CMAKE_EXECUTABLE_MAGIC}" MATCHES "4d5a....")
|
|
# set(CMAKE_EXECUTABLE_FORMAT "COFF" CACHE STRING "Executable file format")
|
|
# endif()
|
|
#
|
|
# # Mach-O files start with CAFEBABE or FEEDFACE, according to http://radio.weblogs.com/0100490/2003/01/28.html
|
|
# if("${CMAKE_EXECUTABLE_MAGIC}" MATCHES "cafebabe")
|
|
# set(CMAKE_EXECUTABLE_FORMAT "MACHO" CACHE STRING "Executable file format")
|
|
# endif()
|
|
# if("${CMAKE_EXECUTABLE_MAGIC}" MATCHES "feedface")
|
|
# set(CMAKE_EXECUTABLE_FORMAT "MACHO" CACHE STRING "Executable file format")
|
|
# endif()
|
|
|
|
endif()
|
|
if(NOT DEFINED CMAKE_EXECUTABLE_FORMAT)
|
|
set(CMAKE_EXECUTABLE_FORMAT)
|
|
endif()
|
|
# Return the information extracted.
|
|
set(CMAKE_${lang}_COMPILER_ID "${CMAKE_${lang}_COMPILER_ID}" PARENT_SCOPE)
|
|
set(CMAKE_${lang}_PLATFORM_ID "${CMAKE_${lang}_PLATFORM_ID}" PARENT_SCOPE)
|
|
set(MSVC_${lang}_ARCHITECTURE_ID "${MSVC_${lang}_ARCHITECTURE_ID}"
|
|
PARENT_SCOPE)
|
|
set(CMAKE_${lang}_COMPILER_VERSION "${CMAKE_${lang}_COMPILER_VERSION}" PARENT_SCOPE)
|
|
set(CMAKE_${lang}_SIMULATE_ID "${CMAKE_${lang}_SIMULATE_ID}" PARENT_SCOPE)
|
|
set(CMAKE_${lang}_SIMULATE_VERSION "${CMAKE_${lang}_SIMULATE_VERSION}" PARENT_SCOPE)
|
|
set(CMAKE_EXECUTABLE_FORMAT "${CMAKE_EXECUTABLE_FORMAT}" PARENT_SCOPE)
|
|
endfunction()
|
|
|
|
#-----------------------------------------------------------------------------
|
|
# Function to query the compiler vendor.
|
|
# This uses a table with entries of the form
|
|
# list(APPEND CMAKE_${lang}_COMPILER_ID_VENDORS ${vendor})
|
|
# set(CMAKE_${lang}_COMPILER_ID_VENDOR_FLAGS_${vendor} -some-vendor-flag)
|
|
# set(CMAKE_${lang}_COMPILER_ID_VENDOR_REGEX_${vendor} "Some Vendor Output")
|
|
# We try running the compiler with the flag for each vendor and
|
|
# matching its regular expression in the output.
|
|
function(CMAKE_DETERMINE_COMPILER_ID_VENDOR lang)
|
|
|
|
if(NOT CMAKE_${lang}_COMPILER_ID_DIR)
|
|
# We get here when this function is called not from within CMAKE_DETERMINE_COMPILER_ID()
|
|
# This is done e.g. for detecting the compiler ID for assemblers.
|
|
# Compute the directory in which to run the test and Create a clean working directory.
|
|
set(CMAKE_${lang}_COMPILER_ID_DIR ${CMAKE_PLATFORM_INFO_DIR}/CompilerId${lang})
|
|
file(REMOVE_RECURSE ${CMAKE_${lang}_COMPILER_ID_DIR})
|
|
file(MAKE_DIRECTORY ${CMAKE_${lang}_COMPILER_ID_DIR})
|
|
endif()
|
|
|
|
|
|
foreach(vendor ${CMAKE_${lang}_COMPILER_ID_VENDORS})
|
|
set(flags ${CMAKE_${lang}_COMPILER_ID_VENDOR_FLAGS_${vendor}})
|
|
set(regex ${CMAKE_${lang}_COMPILER_ID_VENDOR_REGEX_${vendor}})
|
|
execute_process(
|
|
COMMAND ${CMAKE_${lang}_COMPILER}
|
|
${CMAKE_${lang}_COMPILER_ID_ARG1}
|
|
${CMAKE_${lang}_COMPILER_ID_FLAGS_LIST}
|
|
${flags}
|
|
WORKING_DIRECTORY ${CMAKE_${lang}_COMPILER_ID_DIR}
|
|
OUTPUT_VARIABLE output ERROR_VARIABLE output
|
|
RESULT_VARIABLE result
|
|
TIMEOUT 10
|
|
)
|
|
|
|
if("${output}" MATCHES "${regex}")
|
|
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
|
|
"Checking whether the ${lang} compiler is ${vendor} using \"${flags}\" "
|
|
"matched \"${regex}\":\n${output}")
|
|
set(CMAKE_${lang}_COMPILER_ID "${vendor}" PARENT_SCOPE)
|
|
break()
|
|
else()
|
|
if("${result}" MATCHES "timeout")
|
|
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
|
|
"Checking whether the ${lang} compiler is ${vendor} using \"${flags}\" "
|
|
"terminated after 10 s due to timeout.")
|
|
else()
|
|
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
|
|
"Checking whether the ${lang} compiler is ${vendor} using \"${flags}\" "
|
|
"did not match \"${regex}\":\n${output}")
|
|
endif()
|
|
endif()
|
|
endforeach()
|
|
endfunction()
|