2011-05-31 14:30:04 +00:00
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# - Try to find precompiled headers support for GCC 3.4 and 4.x (and MSVC)
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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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# ADD_PRECOMPILED_HEADER _targetName _inputh _inputcpp
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# ADD_PRECOMPILED_HEADER_TO_TARGET _targetName _input _pch_output_to_use
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# ADD_NATIVE_PRECOMPILED_HEADER _targetName _inputh _inputcpp
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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 ${CMAKE_CXX_COMPILER_ARG1} -dumpversion
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OUTPUT_VARIABLE gcc_compiler_version)
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IF(gcc_compiler_version MATCHES "4\\.[0-9]\\.[0-9]")
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SET(PCHSupport_FOUND TRUE)
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ELSE(gcc_compiler_version MATCHES "4\\.[0-9]\\.[0-9]")
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IF(gcc_compiler_version MATCHES "3\\.4\\.[0-9]")
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SET(PCHSupport_FOUND TRUE)
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ENDIF(gcc_compiler_version MATCHES "3\\.4\\.[0-9]")
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ENDIF(gcc_compiler_version MATCHES "4\\.[0-9]\\.[0-9]")
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SET(_PCH_include_prefix "-I")
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ELSE(CMAKE_COMPILER_IS_GNUCXX)
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IF(WIN32)
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SET(PCHSupport_FOUND TRUE) # for experimental msvc support
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SET(_PCH_include_prefix "/I")
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ELSE(WIN32)
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SET(PCHSupport_FOUND FALSE)
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ENDIF(WIN32)
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ENDIF(CMAKE_COMPILER_IS_GNUCXX)
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MACRO(_PCH_GET_COMPILE_FLAGS _out_compile_flags)
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STRING(TOUPPER "CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE}" _flags_var_name)
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SET(${_out_compile_flags} ${${_flags_var_name}} )
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IF(CMAKE_COMPILER_IS_GNUCXX)
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GET_TARGET_PROPERTY(_targetType ${_PCH_current_target} TYPE)
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IF(${_targetType} STREQUAL SHARED_LIBRARY OR ${_targetType} STREQUAL MODULE_LIBRARY)
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LIST(APPEND ${_out_compile_flags} "-fPIC")
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ENDIF(${_targetType} STREQUAL SHARED_LIBRARY OR ${_targetType} STREQUAL MODULE_LIBRARY)
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ENDIF(CMAKE_COMPILER_IS_GNUCXX)
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GET_DIRECTORY_PROPERTY(DIRINC INCLUDE_DIRECTORIES )
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FOREACH(item ${DIRINC})
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LIST(APPEND ${_out_compile_flags} " ${_PCH_include_prefix}\"${item}\"")
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ENDFOREACH(item)
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2011-06-09 19:29:05 +00:00
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# Required for CMake 2.6
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SET(GLOBAL_DEFINITIONS "")
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GET_DIRECTORY_PROPERTY(DEFINITIONS COMPILE_DEFINITIONS)
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FOREACH(item ${DEFINITIONS})
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LIST(APPEND GLOBAL_DEFINITIONS -D${item})
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ENDFOREACH(item)
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2011-05-31 14:30:04 +00:00
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GET_DIRECTORY_PROPERTY(_directory_flags DEFINITIONS)
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2011-06-09 19:29:05 +00:00
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GET_DIRECTORY_PROPERTY(_directory_definitions DIRECTORY ${CMAKE_SOURCE_DIR} DEFINITIONS)
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LIST(APPEND ${_out_compile_flags} ${GLOBAL_DEFINITIONS})
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2011-05-31 14:30:04 +00:00
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LIST(APPEND ${_out_compile_flags} ${_directory_flags})
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2011-06-09 19:29:05 +00:00
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LIST(APPEND ${_out_compile_flags} ${_directory_definitions})
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2011-05-31 14:30:04 +00:00
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LIST(APPEND ${_out_compile_flags} ${CMAKE_CXX_FLAGS})
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2011-06-09 19:29:05 +00:00
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# Format definitions and remove duplicates
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2011-05-31 14:30:04 +00:00
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SEPARATE_ARGUMENTS(${_out_compile_flags})
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2011-06-09 19:29:05 +00:00
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LIST(REMOVE_DUPLICATES ${_out_compile_flags})
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2011-05-31 14:30:04 +00:00
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ENDMACRO(_PCH_GET_COMPILE_FLAGS)
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MACRO(_PCH_GET_PDB_FILENAME out_filename _target)
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# determine output directory based on target type
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GET_TARGET_PROPERTY(_targetType ${_target} TYPE)
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IF(${_targetType} STREQUAL EXECUTABLE)
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SET(_targetOutput ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
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ELSEIF(${_targetType} STREQUAL STATIC_LIBRARY)
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SET(_targetOutput ${CMAKE_ARCHIVE_OUTPUT_DIRECTORY})
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ELSE(${_targetType} STREQUAL EXECUTABLE)
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SET(_targetOutput ${CMAKE_LIBRARY_OUTPUT_DIRECTORY})
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ENDIF(${_targetType} STREQUAL EXECUTABLE)
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# determine target postfix
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STRING(TOUPPER "${CMAKE_BUILD_TYPE}_POSTFIX" _postfix_var_name)
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GET_TARGET_PROPERTY(_targetPostfix ${_target} ${_postfix_var_name})
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IF(${_targetPostfix} MATCHES NOTFOUND)
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SET(_targetPostfix "")
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ENDIF(${_targetPostfix} MATCHES NOTFOUND)
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SET(${out_filename} "${_targetOutput}/${_target}${_targetPostfix}.pdb")
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ENDMACRO(_PCH_GET_PDB_FILENAME)
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MACRO(_PCH_GET_COMPILE_COMMAND out_command _input _inputcpp _output)
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IF(CMAKE_CXX_COMPILER_ARG1)
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# remove leading space in compiler argument
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STRING(REGEX REPLACE "^ +" "" pchsupport_compiler_cxx_arg1 ${CMAKE_CXX_COMPILER_ARG1})
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ELSE(CMAKE_CXX_COMPILER_ARG1)
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SET(pchsupport_compiler_cxx_arg1 "")
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ENDIF(CMAKE_CXX_COMPILER_ARG1)
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IF(CMAKE_COMPILER_IS_GNUCXX)
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SET(${out_command}
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${CMAKE_CXX_COMPILER} ${pchsupport_compiler_cxx_arg1} ${_compile_FLAGS} -x c++-header -o ${_output} -c ${_input}
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)
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ELSE(CMAKE_COMPILER_IS_GNUCXX)
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_PCH_GET_PDB_FILENAME(PDB_FILE ${_PCH_current_target})
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SET(${out_command}
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${CMAKE_CXX_COMPILER} ${pchsupport_compiler_cxx_arg1} ${_compile_FLAGS} /Yc /Fp\"${_output}\" ${_inputcpp} /c /Fd\"${PDB_FILE}\"
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)
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ENDIF(CMAKE_COMPILER_IS_GNUCXX)
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ENDMACRO(_PCH_GET_COMPILE_COMMAND )
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MACRO(GET_PRECOMPILED_HEADER_OUTPUT _targetName _input _output)
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IF(MSVC)
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GET_FILENAME_COMPONENT(_name ${_input} NAME_WE)
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SET(_output "${CMAKE_CURRENT_BINARY_DIR}/${_name}.pch")
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ELSE(MSVC)
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GET_FILENAME_COMPONENT(_name ${_input} NAME)
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SET(_output "${CMAKE_CURRENT_BINARY_DIR}/${_name}.gch")
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ENDIF(MSVC)
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ENDMACRO(GET_PRECOMPILED_HEADER_OUTPUT _targetName _input)
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MACRO(ADD_PRECOMPILED_HEADER_TO_TARGET _targetName _input _pch_output_to_use )
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GET_TARGET_PROPERTY(oldProps ${_targetName} COMPILE_FLAGS)
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IF(${oldProps} MATCHES NOTFOUND)
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SET(oldProps "")
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ENDIF(${oldProps} MATCHES NOTFOUND)
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IF(CMAKE_COMPILER_IS_GNUCXX)
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# to do: test whether compiler flags match between target _targetName
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# and _pch_output_to_use
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FILE(TO_NATIVE_PATH ${_pch_output_to_use} _native_pch_path)
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# for use with distcc and gcc >4.0.1 if preprocessed files are accessible
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# on all remote machines set
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# PCH_ADDITIONAL_COMPILER_FLAGS to -fpch-preprocess
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SET(_target_cflags "${oldProps} ${PCH_ADDITIONAL_COMPILER_FLAGS}-include ${_input} -Winvalid-pch")
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ELSE(CMAKE_COMPILER_IS_GNUCXX)
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IF(MSVC)
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SET(_target_cflags "${oldProps} /Yu\"${_input}\" /FI\"${_input}\" /Fp\"${_pch_output_to_use}\"")
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ENDIF(MSVC)
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ENDIF(CMAKE_COMPILER_IS_GNUCXX)
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SET_TARGET_PROPERTIES(${_targetName} PROPERTIES COMPILE_FLAGS ${_target_cflags})
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2011-06-09 19:29:05 +00:00
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IF(oldProps)
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SET_TARGET_PROPERTIES(${_targetName}_pch_dephelp PROPERTIES COMPILE_FLAGS ${oldProps})
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ENDIF(oldProps)
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2011-05-31 14:30:04 +00:00
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ADD_CUSTOM_TARGET(pch_Generate_${_targetName} DEPENDS ${_pch_output_to_use})
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ADD_DEPENDENCIES(${_targetName} pch_Generate_${_targetName})
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ENDMACRO(ADD_PRECOMPILED_HEADER_TO_TARGET)
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MACRO(ADD_PRECOMPILED_HEADER _targetName _inputh _inputcpp)
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SET(_PCH_current_target ${_targetName})
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IF(NOT CMAKE_BUILD_TYPE)
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MESSAGE(FATAL_ERROR
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"This is the ADD_PRECOMPILED_HEADER macro. "
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"You must set CMAKE_BUILD_TYPE!"
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)
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ENDIF(NOT CMAKE_BUILD_TYPE)
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GET_PRECOMPILED_HEADER_OUTPUT( ${_targetName} ${_inputh} _output)
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GET_TARGET_PROPERTY(_targetType ${_PCH_current_target} TYPE)
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# always build static library because it doesn't need linking
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ADD_LIBRARY(${_targetName}_pch_dephelp STATIC ${_inputcpp})
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_PCH_GET_COMPILE_FLAGS(_compile_FLAGS)
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SET_SOURCE_FILES_PROPERTIES(${_inputh} PROPERTIES GENERATED 1)
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_PCH_GET_COMPILE_COMMAND(_command ${_inputh} ${_inputcpp} ${_output})
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ADD_CUSTOM_COMMAND(
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OUTPUT ${_output}
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COMMAND ${_command}
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DEPENDS ${_inputh} ${_targetName}_pch_dephelp
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)
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ADD_PRECOMPILED_HEADER_TO_TARGET(${_targetName} ${_inputh} ${_output})
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ENDMACRO(ADD_PRECOMPILED_HEADER)
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MACRO(ADD_NATIVE_PRECOMPILED_HEADER _targetName _inputh _inputcpp)
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IF(CMAKE_GENERATOR MATCHES Visual*)
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# Auto include the precompile (useful for moc processing, since the use of
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# precompiled is specified at the target level
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# and I don't want to specifiy /F- for each moc/res/ui generated files (using Qt)
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GET_TARGET_PROPERTY(oldProps ${_targetName} COMPILE_FLAGS)
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IF(${oldProps} MATCHES NOTFOUND)
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SET(oldProps "")
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ENDIF(${oldProps} MATCHES NOTFOUND)
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SET(newProperties "${oldProps} /Yu\"${_inputh}\" /FI\"${_inputh}\"")
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SET_TARGET_PROPERTIES(${_targetName} PROPERTIES COMPILE_FLAGS "${newProperties}")
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#also inlude ${oldProps} to have the same compile options
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SET_SOURCE_FILES_PROPERTIES(${_inputcpp} PROPERTIES COMPILE_FLAGS "${oldProps} /Yc\"${_inputh}\"")
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ELSE(CMAKE_GENERATOR MATCHES Visual*)
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IF(CMAKE_GENERATOR MATCHES Xcode)
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# For Xcode, cmake needs my patch to process
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# GCC_PREFIX_HEADER and GCC_PRECOMPILE_PREFIX_HEADER as target properties
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GET_TARGET_PROPERTY(oldProps ${_targetName} COMPILE_FLAGS)
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IF(${oldProps} MATCHES NOTFOUND)
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SET(oldProps "")
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ENDIF(${oldProps} MATCHES NOTFOUND)
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# When buiding out of the tree, precompiled may not be located
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# Use full path instead.
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GET_FILENAME_COMPONENT(fullPath ${_inputh} ABSOLUTE)
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SET_TARGET_PROPERTIES(${_targetName} PROPERTIES XCODE_ATTRIBUTE_GCC_PREFIX_HEADER "${fullPath}")
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SET_TARGET_PROPERTIES(${_targetName} PROPERTIES XCODE_ATTRIBUTE_GCC_PRECOMPILE_PREFIX_HEADER "YES")
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ELSE(CMAKE_GENERATOR MATCHES Xcode)
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#Fallback to the "old" precompiled suppport
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ADD_PRECOMPILED_HEADER(${_targetName} ${_inputh} ${_inputcpp})
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ENDIF(CMAKE_GENERATOR MATCHES Xcode)
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ENDIF(CMAKE_GENERATOR MATCHES Visual*)
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ENDMACRO(ADD_NATIVE_PRECOMPILED_HEADER)
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