112 lines
5.4 KiB
CMake
112 lines
5.4 KiB
CMake
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# Macro 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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MACRO(CMAKE_DETERMINE_COMPILER_ID lang src)
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# Store the compiler identification source file.
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SET(CMAKE_${lang}_COMPILER_ID_SRC "${src}")
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IF(WIN32 AND NOT CYGWIN)
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# This seems to escape spaces:
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#FILE(TO_NATIVE_PATH "${CMAKE_${lang}_COMPILER_ID_SRC}"
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# CMAKE_${lang}_COMPILER_ID_SRC)
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STRING(REGEX REPLACE "/" "\\\\" CMAKE_${lang}_COMPILER_ID_SRC
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"${CMAKE_${lang}_COMPILER_ID_SRC}")
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ENDIF(WIN32 AND NOT CYGWIN)
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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(CMAKE_${lang}_FLAGS)
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SET(CMAKE_${lang}_COMPILER_ID_FLAGS $ENV{${lang}FLAGS})
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ENDIF(CMAKE_${lang}_FLAGS)
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# Create an empty directory in which to run the test.
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SET(CMAKE_${lang}_COMPILER_ID_DIR ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CompilerId${lang})
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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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# Compile the compiler identification source.
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STRING(REGEX REPLACE " " ";" CMAKE_${lang}_COMPILER_ID_FLAGS_LIST "${CMAKE_${lang}_COMPILER_ID_FLAGS}")
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IF(COMMAND EXECUTE_PROCESS)
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EXECUTE_PROCESS(
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COMMAND ${CMAKE_${lang}_COMPILER} ${CMAKE_${lang}_COMPILER_ID_FLAGS_LIST} ${CMAKE_${lang}_COMPILER_ID_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_${lang}_COMPILER_ID_RESULT
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)
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ELSE(COMMAND EXECUTE_PROCESS)
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EXEC_PROGRAM(
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${CMAKE_${lang}_COMPILER} ${CMAKE_${lang}_COMPILER_ID_DIR}
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ARGS ${CMAKE_${lang}_COMPILER_ID_FLAGS_LIST} \"${CMAKE_${lang}_COMPILER_ID_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(COMMAND EXECUTE_PROCESS)
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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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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Compiling the ${lang} compiler identification source file \""
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"${CMAKE_${lang}_COMPILER_ID_SRC}\" failed with the following output:\n"
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"${CMAKE_${lang}_COMPILER_ID_RESULT}\n"
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"${CMAKE_${lang}_COMPILER_ID_OUTPUT}\n\n")
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ELSE(CMAKE_${lang}_COMPILER_ID_RESULT)
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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 ${lang} compiler identification source file \""
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"${CMAKE_${lang}_COMPILER_ID_SRC}\" succeeded with the following output:\n"
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"${CMAKE_${lang}_COMPILER_ID_OUTPUT}\n\n")
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# Find the executable produced by the compiler.
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SET(CMAKE_${lang}_COMPILER_ID_EXE)
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GET_FILENAME_COMPONENT(CMAKE_${lang}_COMPILER_ID_SRC_BASE ${CMAKE_${lang}_COMPILER_ID_SRC} NAME_WE)
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FOREACH(name a.out a.exe ${CMAKE_${lang}_COMPILER_ID_SRC_BASE}.exe)
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IF(EXISTS ${CMAKE_${lang}_COMPILER_ID_DIR}/${name})
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SET(CMAKE_${lang}_COMPILER_ID_EXE ${CMAKE_${lang}_COMPILER_ID_DIR}/${name})
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ENDIF(EXISTS ${CMAKE_${lang}_COMPILER_ID_DIR}/${name})
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ENDFOREACH(name)
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# Check if the executable was found.
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IF(CMAKE_${lang}_COMPILER_ID_EXE)
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# The executable was found.
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Compilation of the ${lang} compiler identification source \""
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"${CMAKE_${lang}_COMPILER_ID_SRC}\" produced \""
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"${CMAKE_${lang}_COMPILER_ID_EXE}\"\n\n")
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# Read the compiler identification string from the executable file.
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FILE(STRINGS ${CMAKE_${lang}_COMPILER_ID_EXE}
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CMAKE_${lang}_COMPILER_ID_STRINGS LIMIT_COUNT 2 REGEX "INFO:")
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FOREACH(info ${CMAKE_${lang}_COMPILER_ID_STRINGS})
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IF("${info}" MATCHES ".*INFO:compiler\\[(.*)\\].*")
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STRING(REGEX REPLACE ".*INFO:compiler\\[(.*)\\].*" "\\1"
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CMAKE_${lang}_COMPILER_ID "${info}")
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ELSEIF("${info}" MATCHES ".*INFO:platform\\[(.*)\\].*")
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STRING(REGEX REPLACE ".*INFO:platform\\[(.*)\\].*" "\\1"
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CMAKE_${lang}_PLATFORM_ID "${info}")
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ENDIF("${info}" MATCHES ".*INFO:compiler\\[(.*)\\].*")
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ENDFOREACH(info)
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# Check the compiler identification string.
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IF(CMAKE_${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}\n\n")
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ELSE(CMAKE_${lang}_COMPILER_ID)
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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 ${lang} compiler identification could not be found in \""
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"${CMAKE_${lang}_COMPILER_ID_EXE}\"\n\n")
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ENDIF(CMAKE_${lang}_COMPILER_ID)
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ELSE(CMAKE_${lang}_COMPILER_ID_EXE)
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# The executable was not found.
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Compilation of the ${lang} compiler identification source \""
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"${CMAKE_${lang}_COMPILER_ID_SRC}\" did not produce an executable in "
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"${CMAKE_${lang}_COMPILER_ID_DIR} "
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"with a name known to CMake.\n\n")
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ENDIF(CMAKE_${lang}_COMPILER_ID_EXE)
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ENDIF(CMAKE_${lang}_COMPILER_ID_RESULT)
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ENDMACRO(CMAKE_DETERMINE_COMPILER_ID)
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