set(LLVM_BINUTILS_INCDIR "" CACHE PATH "PATH to binutils/include containing plugin-api.h for gold plugin.") if( NOT LLVM_BINUTILS_INCDIR ) # Nothing to say. elseif( NOT EXISTS "${LLVM_BINUTILS_INCDIR}/plugin-api.h" ) message(STATUS "plugin-api.h not found. gold plugin excluded from the build.") else() include_directories( ${LLVM_BINUTILS_INCDIR} ) # Because off_t is used in the public API, the largefile parts are required for # ABI compatibility. add_definitions( -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 ) set(LLVM_LINK_COMPONENTS support) add_llvm_loadable_module(LLVMgold gold-plugin.cpp ) # Makefile.rules contains a special cases for OpenBSD, Darwin and # Windows. We restrict ourselves to Linux for the time being. set(srcexp ${CMAKE_CURRENT_SOURCE_DIR}/gold.exports) add_custom_command(OUTPUT exportsfile COMMAND echo "{" > exportsfile COMMAND grep -q "\\<" ${srcexp} && echo " global:" >> exportsfile || : COMMAND sed -e "s/$/;/" -e "s/^/ /" < ${srcexp} >> exportsfile COMMAND echo " local: *;" >> exportsfile COMMAND echo "};" >> exportsfile DEPENDS ${srcexp} VERBATIM COMMENT "Creating export file for gold plugin") add_custom_target(gold_exports DEPENDS exportsfile) set_property(DIRECTORY APPEND PROPERTY ADDITIONAL_MAKE_CLEAN_FILES exportsfile) # Force re-linking when the exports file changes. Actually, it # forces recompilation of gold-plugin.cpp. The LINK_DEPENDS target # property only works for makefile-based generators. set_property(SOURCE gold-plugin.cpp APPEND PROPERTY OBJECT_DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/exportsfile) target_link_libraries(LLVMgold LTO -Wl,--version-script,exportsfile) add_dependencies(LLVMgold gold_exports) endif()