| # This tool creates a shared library from the LLVM libraries. Generating this |
| # library is enabled by setting LLVM_BUILD_LLVM_DYLIB=yes on the CMake |
| # commandline. By default the shared library only exports the LLVM C API. |
| |
| set(SOURCES |
| libllvm.cpp |
| ) |
| |
| if(LLVM_LINK_LLVM_DYLIB AND LLVM_DYLIB_EXPORTED_SYMBOL_FILE) |
| message(WARNING "Using LLVM_LINK_LLVM_DYLIB with LLVM_DYLIB_EXPORTED_SYMBOL_FILE may not work. Use at your own risk.") |
| endif() |
| |
| if(LLVM_BUILD_LLVM_DYLIB) |
| if(MSVC) |
| message(FATAL_ERROR "Generating libLLVM is not supported on MSVC") |
| endif() |
| |
| llvm_map_components_to_libnames(LIB_NAMES ${LLVM_DYLIB_COMPONENTS}) |
| |
| # libLLVM.so should not have any dependencies on any other LLVM |
| # shared libraries. When using the "all" pseudo-component, |
| # LLVM_AVAILABLE_LIBS is added to the dependencies, which may |
| # contain shared libraries (e.g. libLTO). |
| # |
| # Also exclude libLLVMTableGen for the following reasons: |
| # - it is only used by internal *-tblgen utilities; |
| # - it pollutes the global options space. |
| foreach(lib ${LIB_NAMES}) |
| get_target_property(t ${lib} TYPE) |
| if("${lib}" STREQUAL "LLVMTableGen") |
| elseif("x${t}" STREQUAL "xSTATIC_LIBRARY") |
| list(APPEND FILTERED_LIB_NAMES ${lib}) |
| endif() |
| endforeach() |
| set(LIB_NAMES ${FILTERED_LIB_NAMES}) |
| |
| if(LLVM_DYLIB_EXPORTED_SYMBOL_FILE) |
| set(LLVM_EXPORTED_SYMBOL_FILE ${LLVM_DYLIB_EXPORTED_SYMBOL_FILE}) |
| add_custom_target(libLLVMExports DEPENDS ${LLVM_EXPORTED_SYMBOL_FILE}) |
| endif() |
| |
| add_llvm_library(LLVM SHARED DISABLE_LLVM_LINK_LLVM_DYLIB SONAME ${SOURCES}) |
| |
| list(REMOVE_DUPLICATES LIB_NAMES) |
| if(("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux") OR (MINGW) OR (HAIKU) |
| OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "FreeBSD") |
| OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "GNU") |
| OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "OpenBSD") |
| OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "Fuchsia") |
| OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "DragonFly") |
| OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "SunOS")) # FIXME: It should be "GNU ld for elf" |
| configure_file( |
| ${CMAKE_CURRENT_SOURCE_DIR}/simple_version_script.map.in |
| ${LLVM_LIBRARY_DIR}/tools/llvm-shlib/simple_version_script.map) |
| |
| # GNU ld doesn't resolve symbols in the version script. |
| set(LIB_NAMES -Wl,--whole-archive ${LIB_NAMES} -Wl,--no-whole-archive) |
| if (NOT LLVM_LINKER_IS_SOLARISLD) |
| # Solaris ld does not accept global: *; so there is no way to version *all* global symbols |
| set(LIB_NAMES -Wl,--version-script,${LLVM_LIBRARY_DIR}/tools/llvm-shlib/simple_version_script.map ${LIB_NAMES}) |
| endif() |
| elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin") |
| set(LIB_NAMES -Wl,-all_load ${LIB_NAMES}) |
| endif() |
| |
| target_link_libraries(LLVM PRIVATE ${LIB_NAMES}) |
| |
| if (APPLE) |
| set_property(TARGET LLVM APPEND_STRING PROPERTY |
| LINK_FLAGS |
| " -compatibility_version 1 -current_version ${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}") |
| endif() |
| |
| if(TARGET libLLVMExports) |
| add_dependencies(LLVM libLLVMExports) |
| endif() |
| endif() |
| |
| if(LLVM_BUILD_LLVM_C_DYLIB AND NOT MSVC) |
| if(NOT APPLE) |
| message(FATAL_ERROR "Generating libLLVM-c is only supported on Darwin") |
| endif() |
| |
| if(NOT LLVM_BUILD_LLVM_DYLIB) |
| message(FATAL_ERROR "Generating libLLVM-c requires LLVM_BUILD_LLVM_C_DYLIB on Darwin") |
| endif() |
| |
| # To get the export list for a single llvm library: |
| # nm ${LIB_PATH} | awk "/T _LLVM/ { print $3 }" | sort -u | sed -e "s/^_//g" > ${LIB_PATH}.exports |
| |
| set(LLVM_EXPORTED_SYMBOL_FILE ${CMAKE_BINARY_DIR}/libllvm-c.exports) |
| |
| set(LIB_DIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX}) |
| set(LIB_NAME ${LIB_DIR}/${CMAKE_SHARED_LIBRARY_PREFIX}LLVM) |
| set(LIB_PATH ${LIB_NAME}${CMAKE_SHARED_LIBRARY_SUFFIX}) |
| set(LIB_EXPORTS_PATH ${LIB_NAME}.exports) |
| list(APPEND LLVM_DYLIB_REQUIRED_EXPORTS ${LIB_EXPORTS_PATH}) |
| |
| add_custom_command(OUTPUT ${LLVM_EXPORTED_SYMBOL_FILE} |
| COMMAND nm ${LIB_PATH} | awk "/T _LLVM/ || /T LLVM/ { print $3 }" | sort -u | sed -e "s/^_//g" > ${LLVM_EXPORTED_SYMBOL_FILE} |
| WORKING_DIRECTORY ${LIB_DIR} |
| DEPENDS LLVM |
| COMMENT "Generating Export list for LLVM..." |
| VERBATIM ) |
| |
| add_custom_target(libLLVMCExports DEPENDS ${LLVM_EXPORTED_SYMBOL_FILE}) |
| |
| add_llvm_library(LLVM-C SHARED ${SOURCES}) |
| |
| target_link_libraries(LLVM-C PUBLIC LLVM) |
| add_dependencies(LLVM-C libLLVMCExports) |
| |
| set_property(TARGET LLVM-C APPEND_STRING PROPERTY |
| LINK_FLAGS |
| " -compatibility_version 1 -current_version ${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH} -Wl,-reexport_library ${LIB_PATH}") |
| endif() |
| |
| if(MSVC) |
| # Build the LLVM-C.dll library that exports the C API. |
| |
| set(LLVM_LINK_COMPONENTS |
| ${LLVM_DYLIB_COMPONENTS} |
| ) |
| |
| llvm_map_components_to_libnames(LIB_NAMES ${LLVM_DYLIB_COMPONENTS}) |
| list(REMOVE_DUPLICATES LIB_NAMES) |
| |
| # The python script needs to know whether symbols are prefixed with underscores or not. |
| if(LLVM_HOST_TRIPLE STREQUAL "i686-pc-win32") |
| set(GEN_UNDERSCORE "--underscore") |
| else() |
| set(GEN_UNDERSCORE "") |
| endif() |
| |
| # Set this name here, not used in multi conf loop, |
| # but add script will pick the right one. |
| set(LIBSFILE ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/libllvm-c.args) |
| |
| # Get the full name to the libs so the python script understands them. |
| foreach(lib ${LIB_NAMES}) |
| list(APPEND FULL_LIB_NAMES ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib/${lib}.lib) |
| endforeach() |
| |
| # Need to seperate lib names with newlines. |
| string(REPLACE ";" "\n" FILE_CONTENT "${FULL_LIB_NAMES}") |
| |
| if(NOT "${CMAKE_CFG_INTDIR}" STREQUAL ".") |
| foreach(BUILD_MODE ${CMAKE_CONFIGURATION_TYPES}) |
| # Replace the special string with a per config directory. |
| string(REPLACE ${CMAKE_CFG_INTDIR} ${BUILD_MODE} PER_CONF_CONTENT "${FILE_CONTENT}") |
| |
| # Write out the full lib names into file to be read by the python script. |
| # One libsfile per build, the add_custom_command should expand |
| # ${CMAKE_CFG_INTDIR} correctly and select the right one. |
| file(WRITE ${CMAKE_BINARY_DIR}/${BUILD_MODE}/libllvm-c.args "${PER_CONF_CONTENT}") |
| endforeach() |
| else() |
| # Write out the full lib names into file to be read by the python script. |
| file(WRITE ${LIBSFILE} "${FILE_CONTENT}") |
| endif() |
| |
| # Generate the exports file dynamically. |
| set(GEN_SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/gen-msvc-exports.py) |
| |
| set(LLVM_EXPORTED_SYMBOL_FILE ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/libllvm-c.exports) |
| |
| if(CMAKE_CROSSCOMPILING) |
| build_native_tool(llvm-nm llvm_nm) |
| set(llvm_nm_target "${llvm_nm}") |
| else() |
| set(llvm_nm $<TARGET_FILE:llvm-nm>) |
| set(llvm_nm_target llvm-nm) |
| endif() |
| |
| add_custom_command(OUTPUT ${LLVM_EXPORTED_SYMBOL_FILE} |
| COMMAND ${PYTHON_EXECUTABLE} ${GEN_SCRIPT} --libsfile ${LIBSFILE} ${GEN_UNDERSCORE} --nm "${llvm_nm}" -o ${LLVM_EXPORTED_SYMBOL_FILE} |
| DEPENDS ${LIB_NAMES} ${llvm_nm_target} |
| COMMENT "Generating export list for LLVM-C" |
| VERBATIM ) |
| |
| # Finally link the target. |
| add_llvm_library(LLVM-C SHARED ${SOURCES} DEPENDS intrinsics_gen) |
| |
| endif() |