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Open Source Computer Vision Library
https://opencv.org/
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318 lines
11 KiB
318 lines
11 KiB
# taken from http://www.vtk.org/Bug/view.php?id=1260 and slightly adjusted |
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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 _targetName _input _dowarn |
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# ADD_PRECOMPILED_HEADER_TO_TARGET _targetName _input _pch_output_to_use _dowarn |
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# ADD_NATIVE_PRECOMPILED_HEADER _targetName _input _dowarn |
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# GET_NATIVE_PRECOMPILED_HEADER _targetName _input |
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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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#MESSAGE("GCC Version: ${gcc_compiler_version}") |
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IF(gcc_compiler_version MATCHES "4\\.[0,2-9]\\.[0-9]") |
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SET(PCHSupport_FOUND TRUE) |
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ENDIF() |
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SET(_PCH_include_prefix "-I") |
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ELSEIF(WIN32) |
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SET(PCHSupport_FOUND TRUE) # for experimental msvc support |
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SET(_PCH_include_prefix "/I") |
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ELSE() |
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SET(PCHSupport_FOUND FALSE) |
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ENDIF() |
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MACRO(_PCH_GET_COMPILE_FLAGS _out_compile_flags) |
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STRING(TOUPPER "CMAKE_CXX_FLAGS_${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 AND NOT WIN32) |
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LIST(APPEND ${_out_compile_flags} "-fPIC") |
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ENDIF() |
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ELSE() |
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## TODO ... ? or does it work out of the box |
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ENDIF() |
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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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GET_DIRECTORY_PROPERTY(_directory_flags DEFINITIONS) |
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GET_DIRECTORY_PROPERTY(_global_definitions DIRECTORY ${OpenCV_SOURCE_DIR} DEFINITIONS) |
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#MESSAGE("_directory_flags ${_directory_flags} ${_global_definitions}" ) |
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LIST(APPEND ${_out_compile_flags} ${_directory_flags}) |
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LIST(APPEND ${_out_compile_flags} ${_global_definitions}) |
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LIST(APPEND ${_out_compile_flags} ${CMAKE_CXX_FLAGS}) |
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SEPARATE_ARGUMENTS(${_out_compile_flags}) |
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ENDMACRO(_PCH_GET_COMPILE_FLAGS) |
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MACRO(_PCH_WRITE_PCHDEP_CXX _targetName _include_file _dephelp) |
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SET(${_dephelp} ${CMAKE_CURRENT_BINARY_DIR}/${_targetName}_pch_dephelp.cxx) |
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IF(CMAKE_HOST_WIN32) |
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ADD_CUSTOM_COMMAND( |
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OUTPUT "${${_dephelp}}" |
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COMMAND ${CMAKE_COMMAND} -E echo "#include \\\"${_include_file}\\\"" > "${${_dephelp}}" |
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COMMAND ${CMAKE_COMMAND} -E echo "int testfunction()" >> "${${_dephelp}}" |
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COMMAND ${CMAKE_COMMAND} -E echo "{" >> "${${_dephelp}}" |
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COMMAND ${CMAKE_COMMAND} -E echo " return 0;" >> "${${_dephelp}}" |
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COMMAND ${CMAKE_COMMAND} -E echo "}" >> "${${_dephelp}}" |
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DEPENDS "${_include_file}" |
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) |
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else() |
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ADD_CUSTOM_COMMAND( |
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OUTPUT "${${_dephelp}}" |
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COMMAND ${CMAKE_COMMAND} -E echo "\\#include \\\"${_include_file}\\\"" > "${${_dephelp}}" |
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COMMAND ${CMAKE_COMMAND} -E echo "int testfunction\\(\\)" >> "${${_dephelp}}" |
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COMMAND ${CMAKE_COMMAND} -E echo "{" >> "${${_dephelp}}" |
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COMMAND ${CMAKE_COMMAND} -E echo " \\return 0\\;" >> "${${_dephelp}}" |
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COMMAND ${CMAKE_COMMAND} -E echo "}" >> "${${_dephelp}}" |
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DEPENDS "${_include_file}" |
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) |
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endif() |
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ENDMACRO(_PCH_WRITE_PCHDEP_CXX ) |
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MACRO(_PCH_GET_COMPILE_COMMAND out_command _input _output) |
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FILE(TO_NATIVE_PATH ${_input} _native_input) |
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FILE(TO_NATIVE_PATH ${_output} _native_output) |
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IF(CMAKE_COMPILER_IS_GNUCXX) |
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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 ${CMAKE_CXX_COMPILER_ARG1}) |
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SET(${out_command} |
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${CMAKE_CXX_COMPILER} ${pchsupport_compiler_cxx_arg1} ${_compile_FLAGS} -x c++-header -o ${_output} ${_input} |
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) |
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ELSE(CMAKE_CXX_COMPILER_ARG1) |
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SET(${out_command} |
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${CMAKE_CXX_COMPILER} ${_compile_FLAGS} -x c++-header -o ${_output} ${_input} |
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) |
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ENDIF(CMAKE_CXX_COMPILER_ARG1) |
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ELSE(CMAKE_COMPILER_IS_GNUCXX) |
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SET(_dummy_str "#include <${_input}>") |
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FILE(WRITE ${CMAKE_CURRENT_BINARY_DIR}/pch_dummy.cpp ${_dummy_str}) |
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SET(${out_command} |
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${CMAKE_CXX_COMPILER} ${_compile_FLAGS} /c /Fp${_native_output} /Yc${_native_input} pch_dummy.cpp |
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) |
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#/out:${_output} |
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ENDIF(CMAKE_COMPILER_IS_GNUCXX) |
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ENDMACRO(_PCH_GET_COMPILE_COMMAND ) |
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MACRO(_PCH_GET_TARGET_COMPILE_FLAGS _cflags _header_name _pch_path _dowarn ) |
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FILE(TO_NATIVE_PATH ${_pch_path} _native_pch_path) |
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IF(CMAKE_COMPILER_IS_GNUCXX) |
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# for use with distcc and gcc >4.0.1 if preprocessed files are accessible |
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# on all remote machines set |
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# PCH_ADDITIONAL_COMPILER_FLAGS to -fpch-preprocess |
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# if you want warnings for invalid header files (which is very inconvenient |
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# if you have different versions of the headers for different build types |
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# you may set _pch_dowarn |
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IF (_dowarn) |
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SET(${_cflags} "${PCH_ADDITIONAL_COMPILER_FLAGS} -include \"${CMAKE_CURRENT_BINARY_DIR}/${_header_name}\" -Winvalid-pch " ) |
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ELSE (_dowarn) |
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SET(${_cflags} "${PCH_ADDITIONAL_COMPILER_FLAGS} -include \"${CMAKE_CURRENT_BINARY_DIR}/${_header_name}\" " ) |
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ENDIF (_dowarn) |
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ELSE(CMAKE_COMPILER_IS_GNUCXX) |
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set(${_cflags} "/Fp${_native_pch_path} /Yu${_header_name}" ) |
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ENDIF(CMAKE_COMPILER_IS_GNUCXX) |
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ENDMACRO(_PCH_GET_TARGET_COMPILE_FLAGS ) |
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MACRO(GET_PRECOMPILED_HEADER_OUTPUT _targetName _input _output) |
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GET_FILENAME_COMPONENT(_name ${_input} NAME) |
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GET_FILENAME_COMPONENT(_path ${_input} PATH) |
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SET(${_output} "${CMAKE_CURRENT_BINARY_DIR}/${_name}.gch/${_targetName}_${CMAKE_BUILD_TYPE}.gch") |
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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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# to do: test whether compiler flags match between target _targetName |
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# and _pch_output_to_use |
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GET_FILENAME_COMPONENT(_name ${_input} NAME) |
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IF(ARGN STREQUAL "0") |
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SET(_dowarn 0) |
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ELSE() |
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SET(_dowarn 1) |
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ENDIF() |
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_PCH_GET_TARGET_COMPILE_FLAGS(_target_cflags ${_name} ${_pch_output_to_use} ${_dowarn}) |
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#MESSAGE("Add flags ${_target_cflags} to ${_targetName} " ) |
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SET_TARGET_PROPERTIES(${_targetName} |
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PROPERTIES |
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COMPILE_FLAGS ${_target_cflags} |
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) |
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ADD_CUSTOM_TARGET(pch_Generate_${_targetName} |
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DEPENDS ${_pch_output_to_use} |
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) |
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ADD_DEPENDENCIES(${_targetName} pch_Generate_${_targetName} ) |
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ENDMACRO(ADD_PRECOMPILED_HEADER_TO_TARGET) |
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MACRO(ADD_PRECOMPILED_HEADER _targetName _input) |
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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() |
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IF(ARGN STREQUAL "0") |
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SET(_dowarn 0) |
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ELSE() |
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SET(_dowarn 1) |
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ENDIF() |
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GET_FILENAME_COMPONENT(_name ${_input} NAME) |
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GET_FILENAME_COMPONENT(_path ${_input} PATH) |
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GET_PRECOMPILED_HEADER_OUTPUT( ${_targetName} ${_input} _output) |
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_PCH_WRITE_PCHDEP_CXX(${_targetName} "${_input}" _pch_dephelp_cxx) |
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ADD_LIBRARY(${_targetName}_pch_dephelp STATIC "${_pch_dephelp_cxx}" "${_input}" ) |
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set_target_properties(${_targetName}_pch_dephelp PROPERTIES |
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DEBUG_POSTFIX "${OPENCV_DEBUG_POSTFIX}" |
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ARCHIVE_OUTPUT_DIRECTORY "${LIBRARY_OUTPUT_PATH}" |
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) |
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_PCH_GET_COMPILE_FLAGS(_compile_FLAGS) |
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#MESSAGE("_compile_FLAGS: ${_compile_FLAGS}") |
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#message("COMMAND ${CMAKE_CXX_COMPILER} ${_compile_FLAGS} -x c++-header -o ${_output} ${_input}") |
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ADD_CUSTOM_COMMAND( |
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OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${_name}" |
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COMMAND ${CMAKE_COMMAND} -E copy "${_input}" "${CMAKE_CURRENT_BINARY_DIR}/${_name}" # ensure same directory! Required by gcc |
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DEPENDS "${_input}" |
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) |
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#message("_command ${_input} ${_output}") |
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_PCH_GET_COMPILE_COMMAND(_command ${CMAKE_CURRENT_BINARY_DIR}/${_name} ${_output} ) |
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GET_FILENAME_COMPONENT(_outdir ${_output} PATH) |
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ADD_CUSTOM_COMMAND( |
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OUTPUT "${_output}" |
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COMMAND ${CMAKE_COMMAND} -E make_directory "${_outdir}" |
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COMMAND ${_command} |
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DEPENDS "${_input}" |
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DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/${_name}" |
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DEPENDS ${_targetName}_pch_dephelp |
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) |
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ADD_PRECOMPILED_HEADER_TO_TARGET(${_targetName} ${_input} ${_output} ${_dowarn}) |
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ENDMACRO(ADD_PRECOMPILED_HEADER) |
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# Generates the use of precompiled in a target, |
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# without using depency targets (2 extra for each target) |
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# Using Visual, must also add ${_targetName}_pch to sources |
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# Not needed by Xcode |
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MACRO(GET_NATIVE_PRECOMPILED_HEADER _targetName _input) |
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if(CMAKE_GENERATOR MATCHES "^Visual.*$") |
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SET(_dummy_str "#include \"${_input}\"\n" |
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"// This is required to suppress LNK4221. Very annoying.\n" |
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"void *g_${_targetName}Dummy = 0\;\n") |
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# Use of cxx extension for generated files (as Qt does) |
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SET(${_targetName}_pch ${CMAKE_CURRENT_BINARY_DIR}/${_targetName}_pch.cxx) |
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if(EXISTS ${${_targetName}_pch}) |
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# Check if contents is the same, if not rewrite |
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# todo |
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else() |
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FILE(WRITE ${${_targetName}_pch} ${_dummy_str}) |
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endif() |
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endif() |
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ENDMACRO(GET_NATIVE_PRECOMPILED_HEADER) |
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MACRO(ADD_NATIVE_PRECOMPILED_HEADER _targetName _input) |
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IF(ARGN STREQUAL "0") |
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SET(_dowarn 0) |
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ELSE() |
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SET(_dowarn 1) |
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ENDIF() |
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if(CMAKE_GENERATOR MATCHES "^Visual.*$") |
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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 ${_targetName} COMPILE_FLAGS) |
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if (oldProps MATCHES NOTFOUND) |
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SET(oldProps "") |
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endif() |
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SET(newProperties "${oldProps} /Yu\"${_input}\" /FI\"${_input}\"") |
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SET_TARGET_PROPERTIES(${_targetName} PROPERTIES COMPILE_FLAGS "${newProperties}") |
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#also inlude ${oldProps} to have the same compile options |
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SET_SOURCE_FILES_PROPERTIES(${${_targetName}_pch} PROPERTIES COMPILE_FLAGS "${oldProps} /Yc\"${_input}\"") |
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elseif (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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# 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 ${_input} ABSOLUTE) |
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SET_TARGET_PROPERTIES(${_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() |
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#Fallback to the "old" precompiled suppport |
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#ADD_PRECOMPILED_HEADER(${_targetName} ${_input} ${_dowarn}) |
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endif() |
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ENDMACRO(ADD_NATIVE_PRECOMPILED_HEADER)
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