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66 lines
2.4 KiB
66 lines
2.4 KiB
16 years ago
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# - Try to find precompiled headers support for GCC 3.4 and 4.x
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# Once done this will define:
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#
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# Variable:
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# PCHSupport_FOUND
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#
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# Macro:
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# ADD_PRECOMPILED_HEADER
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IF(CMAKE_COMPILER_IS_GNUCXX)
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EXEC_PROGRAM(
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${CMAKE_CXX_COMPILER}
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ARGS --version
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OUTPUT_VARIABLE _compiler_output)
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STRING(REGEX REPLACE ".* ([0-9]\\.[0-9]\\.[0-9]) .*" "\\1"
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gcc_compiler_version ${_compiler_output})
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#MESSAGE("GCC Version: ${gcc_compiler_version}")
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IF(gcc_compiler_version MATCHES "4\\.[0-9]\\.[0-9]")
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SET(PCHSupport_FOUND TRUE)
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ELSE(gcc_compiler_version MATCHES "4\\.[0-9]\\.[0-9]")
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IF(gcc_compiler_version MATCHES "3\\.4\\.[0-9]")
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SET(PCHSupport_FOUND TRUE)
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ENDIF(gcc_compiler_version MATCHES "3\\.4\\.[0-9]")
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ENDIF(gcc_compiler_version MATCHES "4\\.[0-9]\\.[0-9]")
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ENDIF(CMAKE_COMPILER_IS_GNUCXX)
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MACRO(ADD_PRECOMPILED_HEADER _targetName _input )
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GET_FILENAME_COMPONENT(_name ${_input} NAME)
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SET(_source "${CMAKE_CURRENT_SOURCE_DIR}/${_input}")
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SET(_outdir "${CMAKE_CURRENT_BINARY_DIR}/${_name}.gch")
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MAKE_DIRECTORY(${_outdir})
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SET(_output "${_outdir}/${CMAKE_BUILD_TYPE}.c++")
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STRING(TOUPPER "CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE}" _flags_var_name)
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SET(_compiler_FLAGS ${${_flags_var_name}})
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GET_DIRECTORY_PROPERTY(_directory_flags INCLUDE_DIRECTORIES)
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FOREACH(item ${_directory_flags})
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LIST(APPEND _compiler_FLAGS "-I${item}")
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ENDFOREACH(item)
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GET_DIRECTORY_PROPERTY(_directory_flags COMPILE_DEFINITIONS)
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FOREACH(item ${_directory_flags})
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LIST(APPEND _compiler_FLAGS "-D${item}")
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ENDFOREACH(item)
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SEPARATE_ARGUMENTS(_compiler_FLAGS)
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#MESSAGE("_compiler_FLAGS: ${_compiler_FLAGS}")
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message("${CMAKE_CXX_COMPILER} ${_compiler_FLAGS} -x c++-header -o ${_output} ${_source}")
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ADD_CUSTOM_COMMAND(
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OUTPUT ${_output}
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COMMAND ${CMAKE_CXX_COMPILER}
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${_compiler_FLAGS}
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-x c++-header
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-o ${_output} ${_source}
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DEPENDS ${_source} )
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ADD_CUSTOM_TARGET(${_targetName}_gch DEPENDS ${_output})
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ADD_DEPENDENCIES(${_targetName} ${_targetName}_gch)
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#SET(CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} "-include ${_name} -Winvalid-pch -H")
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#SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -include ${_name} -Winvalid-pch")
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SET_TARGET_PROPERTIES(${_targetName} PROPERTIES
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COMPILE_FLAGS "-include ${_name} -Winvalid-pch"
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)
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ENDMACRO(ADD_PRECOMPILED_HEADER)
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