| 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 ${CMAKE_CURRENT_BINARY_DIR}/exportsfile) |
| |
| target_link_libraries(LLVMgold LTO |
| -Wl,--version-script,${CMAKE_CURRENT_BINARY_DIR}/exportsfile) |
| add_dependencies(LLVMgold gold_exports) |
| endif() |