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119 lines
4.2 KiB
CMake
119 lines
4.2 KiB
CMake
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# Merge_static_libs(outlib lib1 lib2 ... libn) merges a number of static
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# libs into a single static library
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function(merge_static_libs outlib )
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set(libs ${ARGV})
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list(REMOVE_AT libs 0)
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# Create a dummy file that the target will depend on
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set(dummyfile ${CMAKE_CURRENT_BINARY_DIR}/${outlib}_dummy.c)
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file(WRITE ${dummyfile} "const char * dummy = \"${dummyfile}\";")
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add_library(${outlib} STATIC ${dummyfile})
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if("${CMAKE_CFG_INTDIR}" STREQUAL ".")
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set(multiconfig FALSE)
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else()
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set(multiconfig TRUE)
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endif()
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# First get the file names of the libraries to be merged
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foreach(lib ${libs})
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get_target_property(libtype ${lib} TYPE)
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if(NOT libtype STREQUAL "STATIC_LIBRARY")
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message(FATAL_ERROR "Merge_static_libs can only process static libraries")
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endif()
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if(multiconfig)
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foreach(CONFIG_TYPE ${CMAKE_CONFIGURATION_TYPES})
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get_target_property("libfile_${CONFIG_TYPE}" ${lib} "LOCATION_${CONFIG_TYPE}")
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list(APPEND libfiles_${CONFIG_TYPE} ${libfile_${CONFIG_TYPE}})
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endforeach()
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else()
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get_target_property(libfile ${lib} LOCATION)
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list(APPEND libfiles "${libfile}")
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endif(multiconfig)
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endforeach()
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message(STATUS "will be merging ${libfiles}")
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# Just to be sure: cleanup from duplicates
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if(multiconfig)
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foreach(CONFIG_TYPE ${CMAKE_CONFIGURATION_TYPES})
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list(REMOVE_DUPLICATES libfiles_${CONFIG_TYPE})
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set(libfiles ${libfiles} ${libfiles_${CONFIG_TYPE}})
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endforeach()
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endif()
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list(REMOVE_DUPLICATES libfiles)
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# Now the easy part for MSVC and for MAC
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if(MSVC)
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# lib.exe does the merging of libraries just need to conver the list into string
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foreach(CONFIG_TYPE ${CMAKE_CONFIGURATION_TYPES})
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set(flags "")
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foreach(lib ${libfiles_${CONFIG_TYPE}})
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set(flags "${flags} ${lib}")
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endforeach()
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string(TOUPPER "STATIC_LIBRARY_FLAGS_${CONFIG_TYPE}" PROPNAME)
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set_target_properties(${outlib} PROPERTIES ${PROPNAME} "${flags}")
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endforeach()
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elseif(APPLE)
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# Use OSX's libtool to merge archives
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if(multiconfig)
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message(FATAL_ERROR "Multiple configurations are not supported")
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endif()
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get_target_property(outfile ${outlib} LOCATION)
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add_custom_command(TARGET ${outlib} POST_BUILD
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COMMAND rm ${outfile}
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COMMAND /usr/bin/libtool -static -o ${outfile}
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${libfiles}
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)
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else()
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# general UNIX - need to "ar -x" and then "ar -ru"
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if(multiconfig)
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message(FATAL_ERROR "Multiple configurations are not supported")
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endif()
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get_target_property(outfile ${outlib} LOCATION)
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message(STATUS "outfile location is ${outfile}")
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foreach(lib ${libfiles})
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# objlistfile will contain the list of object files for the library
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set(objlistfile ${lib}.objlist)
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set(objdir ${lib}.objdir)
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set(objlistcmake ${objlistfile}.cmake)
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# we only need to extract files once
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if(${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/cmake.check_cache IS_NEWER_THAN ${objlistcmake})
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#---------------------------------
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FILE(WRITE ${objlistcmake}
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"# Extract object files from the library
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message(STATUS \"Extracting object files from ${lib}\")
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EXECUTE_PROCESS(COMMAND ${CMAKE_AR} -x ${lib}
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WORKING_DIRECTORY ${objdir})
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# save the list of object files
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EXECUTE_PROCESS(COMMAND ls .
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OUTPUT_FILE ${objlistfile}
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WORKING_DIRECTORY ${objdir})")
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#---------------------------------
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file(MAKE_DIRECTORY ${objdir})
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add_custom_command(
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OUTPUT ${objlistfile}
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COMMAND ${CMAKE_COMMAND} -P ${objlistcmake}
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DEPENDS ${lib})
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endif()
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list(APPEND extrafiles "${objlistfile}")
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# relative path is needed by ar under MSYS
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file(RELATIVE_PATH objlistfilerpath ${objdir} ${objlistfile})
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add_custom_command(TARGET ${outlib} POST_BUILD
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COMMAND ${CMAKE_COMMAND} -E echo "Running: ${CMAKE_AR} ru ${outfile} @${objlistfilerpath}"
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COMMAND ${CMAKE_AR} ru "${outfile}" @"${objlistfilerpath}"
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WORKING_DIRECTORY ${objdir})
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endforeach()
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add_custom_command(TARGET ${outlib} POST_BUILD
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COMMAND ${CMAKE_COMMAND} -E echo "Running: ${CMAKE_RANLIB} ${outfile}"
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COMMAND ${CMAKE_RANLIB} ${outfile})
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endif()
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file(WRITE ${dummyfile}.base "const char* ${outlib}_sublibs=\"${libs}\";")
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add_custom_command(
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OUTPUT ${dummyfile}
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COMMAND ${CMAKE_COMMAND} -E copy ${dummyfile}.base ${dummyfile}
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DEPENDS ${libs} ${extrafiles})
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endfunction()
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