| # taken from http://public.kitware.com/Bug/view.php?id=1260 and slightly adjusted |
| |
| # - Try to find precompiled headers support for GCC 3.4 and 4.x |
| # Once done this will define: |
| # |
| # Variable: |
| # PCHSupport_FOUND |
| # |
| # Macro: |
| # ADD_PRECOMPILED_HEADER _targetName _input _dowarn |
| # ADD_PRECOMPILED_HEADER_TO_TARGET _targetName _input _pch_output_to_use _dowarn |
| # ADD_NATIVE_PRECOMPILED_HEADER _targetName _input _dowarn |
| # GET_NATIVE_PRECOMPILED_HEADER _targetName _input |
| |
| IF(CMAKE_COMPILER_IS_GNUCXX) |
| |
| EXEC_PROGRAM( |
| ${CMAKE_CXX_COMPILER} |
| ARGS ${CMAKE_CXX_COMPILER_ARG1} -dumpversion |
| OUTPUT_VARIABLE gcc_compiler_version) |
| #MESSAGE("GCC Version: ${gcc_compiler_version}") |
| IF(gcc_compiler_version VERSION_GREATER "4.2.-1") |
| SET(PCHSupport_FOUND TRUE) |
| ENDIF() |
| |
| SET(_PCH_include_prefix "-I") |
| SET(_PCH_isystem_prefix "-isystem") |
| SET(_PCH_define_prefix "-D") |
| |
| ELSEIF(CMAKE_GENERATOR MATCHES "^Visual.*$") |
| SET(PCHSupport_FOUND TRUE) |
| SET(_PCH_include_prefix "/I") |
| SET(_PCH_isystem_prefix "/I") |
| SET(_PCH_define_prefix "/D") |
| ELSE() |
| SET(PCHSupport_FOUND FALSE) |
| ENDIF() |
| |
| MACRO(_PCH_GET_COMPILE_FLAGS _out_compile_flags) |
| |
| STRING(TOUPPER "CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE}" _flags_var_name) |
| SET(${_out_compile_flags} ${${_flags_var_name}} ) |
| |
| IF(CMAKE_COMPILER_IS_GNUCXX) |
| |
| GET_TARGET_PROPERTY(_targetType ${_PCH_current_target} TYPE) |
| IF(${_targetType} STREQUAL SHARED_LIBRARY AND NOT WIN32) |
| LIST(APPEND ${_out_compile_flags} "-fPIC") |
| ENDIF() |
| |
| GET_TARGET_PROPERTY(_target_definitions ${_PCH_current_target} COMPILE_DEFINITIONS) |
| if(_target_definitions) |
| foreach(_def ${_target_definitions}) |
| LIST(APPEND ${_out_compile_flags} "-D${_def}") |
| endforeach() |
| endif() |
| |
| ELSE() |
| ## TODO ... ? or does it work out of the box |
| ENDIF() |
| |
| GET_DIRECTORY_PROPERTY(DIRINC INCLUDE_DIRECTORIES ) |
| FOREACH(item ${DIRINC}) |
| if(item MATCHES "^${OpenCV_SOURCE_DIR}/modules/") |
| LIST(APPEND ${_out_compile_flags} "${_PCH_include_prefix}\"${item}\"") |
| else() |
| LIST(APPEND ${_out_compile_flags} "${_PCH_isystem_prefix}\"${item}\"") |
| endif() |
| ENDFOREACH(item) |
| |
| get_target_property(DIRINC ${_PCH_current_target} INCLUDE_DIRECTORIES ) |
| FOREACH(item ${DIRINC}) |
| if(item MATCHES "^${OpenCV_SOURCE_DIR}/modules/") |
| LIST(APPEND ${_out_compile_flags} "${_PCH_include_prefix}\"${item}\"") |
| else() |
| LIST(APPEND ${_out_compile_flags} "${_PCH_isystem_prefix}\"${item}\"") |
| endif() |
| ENDFOREACH(item) |
| |
| GET_DIRECTORY_PROPERTY(_directory_flags DEFINITIONS) |
| GET_DIRECTORY_PROPERTY(_global_definitions DIRECTORY ${OpenCV_SOURCE_DIR} DEFINITIONS) |
| #MESSAGE("_directory_flags ${_directory_flags} ${_global_definitions}" ) |
| LIST(APPEND ${_out_compile_flags} ${_directory_flags}) |
| LIST(APPEND ${_out_compile_flags} ${_global_definitions}) |
| LIST(APPEND ${_out_compile_flags} ${CMAKE_CXX_FLAGS}) |
| |
| SEPARATE_ARGUMENTS(${_out_compile_flags}) |
| |
| ENDMACRO(_PCH_GET_COMPILE_FLAGS) |
| |
| |
| MACRO(_PCH_WRITE_PCHDEP_CXX _targetName _include_file _dephelp) |
| |
| SET(${_dephelp} ${CMAKE_CURRENT_BINARY_DIR}/${_targetName}_pch_dephelp.cxx) |
| IF(CMAKE_HOST_WIN32) |
| ADD_CUSTOM_COMMAND( |
| OUTPUT "${${_dephelp}}" |
| COMMAND ${CMAKE_COMMAND} -E echo "#include \\\"${_include_file}\\\"" > "${${_dephelp}}" |
| COMMAND ${CMAKE_COMMAND} -E echo "int testfunction();" >> "${${_dephelp}}" |
| COMMAND ${CMAKE_COMMAND} -E echo "int testfunction()" >> "${${_dephelp}}" |
| COMMAND ${CMAKE_COMMAND} -E echo "{" >> "${${_dephelp}}" |
| COMMAND ${CMAKE_COMMAND} -E echo " return 0;" >> "${${_dephelp}}" |
| COMMAND ${CMAKE_COMMAND} -E echo "}" >> "${${_dephelp}}" |
| DEPENDS "${_include_file}" |
| ) |
| else() |
| ADD_CUSTOM_COMMAND( |
| OUTPUT "${${_dephelp}}" |
| COMMAND ${CMAKE_COMMAND} -E echo "\\#include \\\"${_include_file}\\\"" > "${${_dephelp}}" |
| COMMAND ${CMAKE_COMMAND} -E echo "int testfunction\\(\\)\\;" >> "${${_dephelp}}" |
| COMMAND ${CMAKE_COMMAND} -E echo "int testfunction\\(\\)" >> "${${_dephelp}}" |
| COMMAND ${CMAKE_COMMAND} -E echo "{" >> "${${_dephelp}}" |
| COMMAND ${CMAKE_COMMAND} -E echo " \\return 0\\;" >> "${${_dephelp}}" |
| COMMAND ${CMAKE_COMMAND} -E echo "}" >> "${${_dephelp}}" |
| DEPENDS "${_include_file}" |
| ) |
| endif() |
| |
| ENDMACRO(_PCH_WRITE_PCHDEP_CXX ) |
| |
| MACRO(_PCH_GET_COMPILE_COMMAND out_command _input _output) |
| |
| FILE(TO_NATIVE_PATH ${_input} _native_input) |
| FILE(TO_NATIVE_PATH ${_output} _native_output) |
| |
| IF(CMAKE_COMPILER_IS_GNUCXX) |
| IF(CMAKE_CXX_COMPILER_ARG1) |
| # remove leading space in compiler argument |
| STRING(REGEX REPLACE "^ +" "" pchsupport_compiler_cxx_arg1 ${CMAKE_CXX_COMPILER_ARG1}) |
| |
| SET(${out_command} |
| ${CMAKE_CXX_COMPILER} ${pchsupport_compiler_cxx_arg1} ${_compile_FLAGS} -x c++-header -o ${_output} ${_input} |
| ) |
| ELSE(CMAKE_CXX_COMPILER_ARG1) |
| SET(${out_command} |
| ${CMAKE_CXX_COMPILER} ${_compile_FLAGS} -x c++-header -o ${_output} ${_input} |
| ) |
| ENDIF(CMAKE_CXX_COMPILER_ARG1) |
| ELSE(CMAKE_COMPILER_IS_GNUCXX) |
| |
| SET(_dummy_str "#include <${_input}>") |
| FILE(WRITE ${CMAKE_CURRENT_BINARY_DIR}/pch_dummy.cpp ${_dummy_str}) |
| |
| SET(${out_command} |
| ${CMAKE_CXX_COMPILER} ${_compile_FLAGS} /c /Fp${_native_output} /Yc${_native_input} pch_dummy.cpp |
| ) |
| #/out:${_output} |
| |
| ENDIF(CMAKE_COMPILER_IS_GNUCXX) |
| |
| ENDMACRO(_PCH_GET_COMPILE_COMMAND ) |
| |
| |
| MACRO(_PCH_GET_TARGET_COMPILE_FLAGS _cflags _header_name _pch_path _dowarn ) |
| |
| FILE(TO_NATIVE_PATH ${_pch_path} _native_pch_path) |
| |
| IF(CMAKE_COMPILER_IS_GNUCXX) |
| # for use with distcc and gcc >4.0.1 if preprocessed files are accessible |
| # on all remote machines set |
| # PCH_ADDITIONAL_COMPILER_FLAGS to -fpch-preprocess |
| # if you want warnings for invalid header files (which is very inconvenient |
| # if you have different versions of the headers for different build types |
| # you may set _pch_dowarn |
| IF (_dowarn) |
| SET(${_cflags} "${PCH_ADDITIONAL_COMPILER_FLAGS} -include \"${CMAKE_CURRENT_BINARY_DIR}/${_header_name}\" -Winvalid-pch " ) |
| ELSE (_dowarn) |
| SET(${_cflags} "${PCH_ADDITIONAL_COMPILER_FLAGS} -include \"${CMAKE_CURRENT_BINARY_DIR}/${_header_name}\" " ) |
| ENDIF (_dowarn) |
| |
| ELSE(CMAKE_COMPILER_IS_GNUCXX) |
| |
| set(${_cflags} "/Fp${_native_pch_path} /Yu${_header_name}" ) |
| |
| ENDIF(CMAKE_COMPILER_IS_GNUCXX) |
| |
| ENDMACRO(_PCH_GET_TARGET_COMPILE_FLAGS ) |
| |
| |
| MACRO(GET_PRECOMPILED_HEADER_OUTPUT _targetName _input _output) |
| |
| GET_FILENAME_COMPONENT(_name ${_input} NAME) |
| GET_FILENAME_COMPONENT(_path ${_input} PATH) |
| SET(${_output} "${CMAKE_CURRENT_BINARY_DIR}/${_name}.gch/${_targetName}_${CMAKE_BUILD_TYPE}.gch") |
| |
| ENDMACRO(GET_PRECOMPILED_HEADER_OUTPUT _targetName _input) |
| |
| |
| MACRO(ADD_PRECOMPILED_HEADER_TO_TARGET _targetName _input _pch_output_to_use ) |
| |
| # to do: test whether compiler flags match between target _targetName |
| # and _pch_output_to_use |
| GET_FILENAME_COMPONENT(_name ${_input} NAME) |
| |
| IF(ARGN STREQUAL "0") |
| SET(_dowarn 0) |
| ELSE() |
| SET(_dowarn 1) |
| ENDIF() |
| |
| _PCH_GET_TARGET_COMPILE_FLAGS(_target_cflags ${_name} ${_pch_output_to_use} ${_dowarn}) |
| #MESSAGE("Add flags ${_target_cflags} to ${_targetName} " ) |
| |
| GET_TARGET_PROPERTY(_sources ${_targetName} SOURCES) |
| FOREACH(src ${_sources}) |
| if(NOT "${src}" MATCHES "\\.mm$") |
| get_source_file_property(_flags "${src}" COMPILE_FLAGS) |
| if(_flags) |
| set(_flags "${_flags} ${_target_cflags}") |
| else() |
| set(_flags "${_target_cflags}") |
| endif() |
| |
| set_source_files_properties("${src}" PROPERTIES COMPILE_FLAGS "${_flags}") |
| endif() |
| ENDFOREACH() |
| |
| ADD_CUSTOM_TARGET(pch_Generate_${_targetName} |
| DEPENDS ${_pch_output_to_use} |
| ) |
| |
| ADD_DEPENDENCIES(${_targetName} pch_Generate_${_targetName} ) |
| |
| ENDMACRO(ADD_PRECOMPILED_HEADER_TO_TARGET) |
| |
| MACRO(ADD_PRECOMPILED_HEADER _targetName _input) |
| |
| SET(_PCH_current_target ${_targetName}) |
| |
| IF(NOT CMAKE_BUILD_TYPE) |
| MESSAGE(FATAL_ERROR |
| "This is the ADD_PRECOMPILED_HEADER macro. " |
| "You must set CMAKE_BUILD_TYPE!" |
| ) |
| ENDIF() |
| |
| IF(ARGN STREQUAL "0") |
| SET(_dowarn 0) |
| ELSE() |
| SET(_dowarn 1) |
| ENDIF() |
| |
| GET_FILENAME_COMPONENT(_name ${_input} NAME) |
| GET_FILENAME_COMPONENT(_path ${_input} PATH) |
| GET_PRECOMPILED_HEADER_OUTPUT( ${_targetName} ${_input} _output) |
| |
| _PCH_WRITE_PCHDEP_CXX(${_targetName} "${_input}" _pch_dephelp_cxx) |
| |
| ADD_LIBRARY(${_targetName}_pch_dephelp STATIC "${_pch_dephelp_cxx}" "${_input}" ) |
| |
| set_target_properties(${_targetName}_pch_dephelp PROPERTIES |
| DEBUG_POSTFIX "${OPENCV_DEBUG_POSTFIX}" |
| ARCHIVE_OUTPUT_DIRECTORY "${LIBRARY_OUTPUT_PATH}" |
| ) |
| |
| _PCH_GET_COMPILE_FLAGS(_compile_FLAGS) |
| |
| get_target_property(type ${_targetName} TYPE) |
| if(type STREQUAL "SHARED_LIBRARY") |
| get_target_property(__DEFINES ${_targetName} DEFINE_SYMBOL) |
| if(NOT __DEFINES MATCHES __DEFINES-NOTFOUND) |
| list(APPEND _compile_FLAGS "${_PCH_define_prefix}${__DEFINES}") |
| endif() |
| endif() |
| |
| get_target_property(DIRINC ${_targetName} INCLUDE_DIRECTORIES) |
| set_target_properties(${_targetName}_pch_dephelp PROPERTIES INCLUDE_DIRECTORIES "${DIRINC}") |
| |
| #MESSAGE("_compile_FLAGS: ${_compile_FLAGS}") |
| #message("COMMAND ${CMAKE_CXX_COMPILER} ${_compile_FLAGS} -x c++-header -o ${_output} ${_input}") |
| |
| ADD_CUSTOM_COMMAND( |
| OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${_name}" |
| COMMAND ${CMAKE_COMMAND} -E copy "${_input}" "${CMAKE_CURRENT_BINARY_DIR}/${_name}" # ensure same directory! Required by gcc |
| DEPENDS "${_input}" |
| ) |
| |
| #message("_command ${_input} ${_output}") |
| _PCH_GET_COMPILE_COMMAND(_command ${CMAKE_CURRENT_BINARY_DIR}/${_name} ${_output} ) |
| |
| GET_FILENAME_COMPONENT(_outdir ${_output} PATH) |
| ADD_CUSTOM_COMMAND( |
| OUTPUT "${_output}" |
| COMMAND ${CMAKE_COMMAND} -E make_directory "${_outdir}" |
| COMMAND ${_command} |
| DEPENDS "${_input}" |
| DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/${_name}" |
| DEPENDS ${_targetName}_pch_dephelp |
| ) |
| |
| ADD_PRECOMPILED_HEADER_TO_TARGET(${_targetName} ${_input} ${_output} ${_dowarn}) |
| |
| ENDMACRO(ADD_PRECOMPILED_HEADER) |
| |
| |
| # Generates the use of precompiled in a target, |
| # without using depency targets (2 extra for each target) |
| # Using Visual, must also add ${_targetName}_pch to sources |
| # Not needed by Xcode |
| |
| MACRO(GET_NATIVE_PRECOMPILED_HEADER _targetName _input) |
| |
| if(CMAKE_GENERATOR MATCHES "^Visual.*$") |
| set(_dummy_str "#include \"${_input}\"\n") |
| |
| set(${_targetName}_pch ${CMAKE_CURRENT_BINARY_DIR}/${_targetName}_pch.cpp) |
| if(EXISTS ${${_targetName}_pch}) |
| # Check if contents is the same, if not rewrite |
| # todo |
| else() |
| FILE(WRITE ${${_targetName}_pch} ${_dummy_str}) |
| endif() |
| endif() |
| |
| ENDMACRO(GET_NATIVE_PRECOMPILED_HEADER) |
| |
| |
| MACRO(ADD_NATIVE_PRECOMPILED_HEADER _targetName _input) |
| |
| IF(ARGN STREQUAL "0") |
| SET(_dowarn 0) |
| ELSE() |
| SET(_dowarn 1) |
| ENDIF() |
| |
| if(CMAKE_GENERATOR MATCHES "^Visual.*$") |
| |
| # Auto include the precompile (useful for moc processing, since the use of |
| # precompiled is specified at the target level |
| # and I don't want to specifiy /F- for each moc/res/ui generated files (using Qt) |
| |
| GET_TARGET_PROPERTY(oldProps ${_targetName} COMPILE_FLAGS) |
| if (oldProps MATCHES NOTFOUND) |
| SET(oldProps "") |
| endif() |
| |
| SET(newProperties "${oldProps} /Yu\"${_input}\" /FI\"${_input}\"") |
| SET_TARGET_PROPERTIES(${_targetName} PROPERTIES COMPILE_FLAGS "${newProperties}") |
| |
| #also inlude ${oldProps} to have the same compile options |
| SET_SOURCE_FILES_PROPERTIES(${${_targetName}_pch} PROPERTIES COMPILE_FLAGS "${oldProps} /Yc\"${_input}\"") |
| |
| elseif (CMAKE_GENERATOR MATCHES Xcode) |
| |
| # For Xcode, cmake needs my patch to process |
| # GCC_PREFIX_HEADER and GCC_PRECOMPILE_PREFIX_HEADER as target properties |
| |
| # When buiding out of the tree, precompiled may not be located |
| # Use full path instead. |
| GET_FILENAME_COMPONENT(fullPath ${_input} ABSOLUTE) |
| |
| SET_TARGET_PROPERTIES(${_targetName} PROPERTIES XCODE_ATTRIBUTE_GCC_PREFIX_HEADER "${fullPath}") |
| SET_TARGET_PROPERTIES(${_targetName} PROPERTIES XCODE_ATTRIBUTE_GCC_PRECOMPILE_PREFIX_HEADER "YES") |
| |
| else() |
| |
| #Fallback to the "old" precompiled suppport |
| #ADD_PRECOMPILED_HEADER(${_targetName} ${_input} ${_dowarn}) |
| |
| endif() |
| |
| ENDMACRO(ADD_NATIVE_PRECOMPILED_HEADER) |
| |
| macro(ocv_add_precompiled_header_to_target the_target pch_header) |
| if(PCHSupport_FOUND AND ENABLE_PRECOMPILED_HEADERS AND EXISTS "${pch_header}") |
| if(CMAKE_GENERATOR MATCHES "^Visual" OR CMAKE_GENERATOR MATCHES Xcode) |
| add_native_precompiled_header(${the_target} ${pch_header}) |
| elseif(CMAKE_COMPILER_IS_GNUCXX AND CMAKE_GENERATOR MATCHES "Makefiles|Ninja") |
| add_precompiled_header(${the_target} ${pch_header}) |
| endif() |
| endif() |
| endmacro() |
