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# Merge static libraries into a big static lib. The resulting library
# should not not have dependencies on other static libraries.
# We use it in MySQL to merge mysys,dbug,vio etc into mysqlclient
FUNCTION(TOKU_GET_DEPENDEND_OS_LIBS target result)
SET(deps ${${target}_LIB_DEPENDS})
FOREACH(lib ${deps})
IF(TARGET ${lib})
SET(ret ${ret} ${lib})
ENDIF()
ENDFOREACH()
SET(${result} ${ret} PARENT_SCOPE)
ENDFUNCTION(TOKU_GET_DEPENDEND_OS_LIBS)
MACRO(TOKU_MERGE_STATIC_LIBS TARGET OUTPUT_NAME LIBS_TO_MERGE)
# To produce a library we need at least one source file.
# It is created by ADD_CUSTOM_COMMAND below and will helps
# also help to track dependencies.
SET(SOURCE_FILE ${CMAKE_CURRENT_BINARY_DIR}/${TARGET}_depends.cc)
ADD_LIBRARY(${TARGET} STATIC ${SOURCE_FILE})
SET_TARGET_PROPERTIES(${TARGET} PROPERTIES OUTPUT_NAME ${OUTPUT_NAME})
SET(OSLIBS)
FOREACH(LIB ${LIBS_TO_MERGE})
IF(TARGET ${LIB})
# This is a target in current project
# (can be a static or shared lib)
GET_TARGET_PROPERTY(LIB_TYPE ${LIB} TYPE)
IF(LIB_TYPE STREQUAL "STATIC_LIBRARY")
LIST(APPEND STATIC_LIBS ${LIB})
ADD_DEPENDENCIES(${TARGET} ${LIB})
# Extract dependend OS libraries
TOKU_GET_DEPENDEND_OS_LIBS(${LIB} LIB_OSLIBS)
LIST(APPEND OSLIBS ${LIB_OSLIBS})
ELSE()
# This is a shared library our static lib depends on.
LIST(APPEND OSLIBS ${LIB})
ENDIF()
ELSE()
# 3rd party library like libz.so. Make sure that everything
# that links to our library links to this one as well.
LIST(APPEND OSLIBS ${LIB})
ENDIF()
ENDFOREACH()
IF(OSLIBS)
# REMOVE_DUPLICATES destroys the order of the libs so disabled
# LIST(REMOVE_DUPLICATES OSLIBS)
TARGET_LINK_LIBRARIES(${TARGET} LINK_PUBLIC ${OSLIBS})
ENDIF()
# Make the generated dummy source file depended on all static input
# libs. If input lib changes,the source file is touched
# which causes the desired effect (relink).
ADD_CUSTOM_COMMAND(
OUTPUT ${SOURCE_FILE}
COMMAND ${CMAKE_COMMAND} -E touch ${SOURCE_FILE}
DEPENDS ${STATIC_LIBS})
IF(MSVC)
# To merge libs, just pass them to lib.exe command line.
SET(LINKER_EXTRA_FLAGS "")
FOREACH(LIB ${STATIC_LIBS})
SET(LINKER_EXTRA_FLAGS "${LINKER_EXTRA_FLAGS} $<TARGET_FILE:${LIB}>")
ENDFOREACH()
SET_TARGET_PROPERTIES(${TARGET} PROPERTIES STATIC_LIBRARY_FLAGS
"${LINKER_EXTRA_FLAGS}")
ELSE()
FOREACH(STATIC_LIB ${STATIC_LIBS})
LIST(APPEND STATIC_LIB_FILES $<TARGET_FILE:${STATIC_LIB}>)
ENDFOREACH()
IF(APPLE)
# Use OSX's libtool to merge archives (ihandles universal
# binaries properly)
ADD_CUSTOM_COMMAND(TARGET ${TARGET} POST_BUILD
COMMAND rm $<TARGET_FILE:${TARGET}>
COMMAND /usr/bin/libtool -static -o $<TARGET_FILE:${TARGET}>
${STATIC_LIB_FILES}
)
ELSE()
# Generic Unix, Cygwin or MinGW. In post-build step, call
# script, that extracts objects from archives with "ar x"
# and repacks them with "ar r"
SET(TARGET ${TARGET})
CONFIGURE_FILE(
${TOKU_CMAKE_SCRIPT_DIR}/merge_archives_unix.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/merge_archives_${TARGET}.cmake
@ONLY
)
STRING(REGEX REPLACE ";" "\\\;" STATIC_LIB_FILES "${STATIC_LIB_FILES}")
ADD_CUSTOM_COMMAND(TARGET ${TARGET} POST_BUILD
COMMAND rm $<TARGET_FILE:${TARGET}>
COMMAND ${CMAKE_COMMAND}
-D TARGET_FILE=$<TARGET_FILE:${TARGET}>
-D STATIC_LIB_FILES="${STATIC_LIB_FILES}"
-P ${CMAKE_CURRENT_BINARY_DIR}/merge_archives_${TARGET}.cmake
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/merge_archives_${TARGET}.cmake"
)
ENDIF()
ENDIF()
ENDMACRO(TOKU_MERGE_STATIC_LIBS)
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