+ # LLVM_REQUIRES_EH is an internal flag that individual
+ # targets can use to force EH
+ if(LLVM_REQUIRES_EH OR LLVM_ENABLE_EH)
+ if(NOT (LLVM_REQUIRES_RTTI OR LLVM_ENABLE_RTTI))
+ message(AUTHOR_WARNING "Exception handling requires RTTI. Enabling RTTI for ${name}")
+ set(LLVM_REQUIRES_RTTI ON)
+ endif()
+ else()
+ if(LLVM_COMPILER_IS_GCC_COMPATIBLE)
+ list(APPEND LLVM_COMPILE_FLAGS "-fno-exceptions")
+ elseif(MSVC)
+ list(APPEND LLVM_COMPILE_DEFINITIONS _HAS_EXCEPTIONS=0)
+ list(APPEND LLVM_COMPILE_FLAGS "/EHs-c-")
+ endif()
+ endif()
+
+ # LLVM_REQUIRES_RTTI is an internal flag that individual
+ # targets can use to force RTTI
+ if(NOT (LLVM_REQUIRES_RTTI OR LLVM_ENABLE_RTTI))
+ list(APPEND LLVM_COMPILE_DEFINITIONS GTEST_HAS_RTTI=0)
+ if (LLVM_COMPILER_IS_GCC_COMPATIBLE)
+ list(APPEND LLVM_COMPILE_FLAGS "-fno-rtti")
+ elseif (MSVC)
+ list(APPEND LLVM_COMPILE_FLAGS "/GR-")
+ endif ()
+ endif()
+
+ # Assume that;
+ # - LLVM_COMPILE_FLAGS is list.
+ # - PROPERTY COMPILE_FLAGS is string.
+ string(REPLACE ";" " " target_compile_flags "${LLVM_COMPILE_FLAGS}")
+
+ if(update_src_props)
+ foreach(fn ${sources})
+ get_filename_component(suf ${fn} EXT)
+ if("${suf}" STREQUAL ".cpp")
+ set_property(SOURCE ${fn} APPEND_STRING PROPERTY
+ COMPILE_FLAGS "${target_compile_flags}")
+ endif()
+ endforeach()
+ else()
+ # Update target props, since all sources are C++.
+ set_property(TARGET ${name} APPEND_STRING PROPERTY
+ COMPILE_FLAGS "${target_compile_flags}")
+ endif()
+
+ set_property(TARGET ${name} APPEND PROPERTY COMPILE_DEFINITIONS ${LLVM_COMPILE_DEFINITIONS})
+endfunction()
+
+function(add_llvm_symbol_exports target_name export_file)
+ if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+ set(native_export_file "${target_name}.exports")
+ add_custom_command(OUTPUT ${native_export_file}
+ COMMAND sed -e "s/^/_/" < ${export_file} > ${native_export_file}
+ DEPENDS ${export_file}
+ VERBATIM
+ COMMENT "Creating export file for ${target_name}")
+ set_property(TARGET ${target_name} APPEND_STRING PROPERTY
+ LINK_FLAGS " -Wl,-exported_symbols_list,${CMAKE_CURRENT_BINARY_DIR}/${native_export_file}")
+ elseif(LLVM_HAVE_LINK_VERSION_SCRIPT)
+ # Gold and BFD ld require a version script rather than a plain list.
+ set(native_export_file "${target_name}.exports")
+ # FIXME: Don't write the "local:" line on OpenBSD.
+ add_custom_command(OUTPUT ${native_export_file}
+ COMMAND echo "{" > ${native_export_file}
+ COMMAND grep -q "[[:alnum:]]" ${export_file} && echo " global:" >> ${native_export_file} || :
+ COMMAND sed -e "s/$/;/" -e "s/^/ /" < ${export_file} >> ${native_export_file}
+ COMMAND echo " local: *;" >> ${native_export_file}
+ COMMAND echo "};" >> ${native_export_file}
+ DEPENDS ${export_file}
+ VERBATIM
+ COMMENT "Creating export file for ${target_name}")
+ set_property(TARGET ${target_name} APPEND_STRING PROPERTY
+ LINK_FLAGS " -Wl,--version-script,${CMAKE_CURRENT_BINARY_DIR}/${native_export_file}")
+ else()
+ set(native_export_file "${target_name}.def")
+
+ set(CAT "cat")
+ set(export_file_nativeslashes ${export_file})
+ if(WIN32 AND NOT CYGWIN)
+ set(CAT "type")
+ # Convert ${export_file} to native format (backslashes) for "type"
+ # Does not use file(TO_NATIVE_PATH) as it doesn't create a native
+ # path but a build-system specific format (see CMake bug
+ # http://public.kitware.com/Bug/print_bug_page.php?bug_id=5939 )
+ string(REPLACE / \\ export_file_nativeslashes ${export_file})
+ endif()
+
+ add_custom_command(OUTPUT ${native_export_file}
+ COMMAND ${CMAKE_COMMAND} -E echo "EXPORTS" > ${native_export_file}
+ COMMAND ${CAT} ${export_file_nativeslashes} >> ${native_export_file}
+ DEPENDS ${export_file}
+ VERBATIM
+ COMMENT "Creating export file for ${target_name}")
+ set(export_file_linker_flag "${CMAKE_CURRENT_BINARY_DIR}/${native_export_file}")
+ if(MSVC)
+ set(export_file_linker_flag "/DEF:${export_file_linker_flag}")
+ endif()
+ set_property(TARGET ${target_name} APPEND_STRING PROPERTY
+ LINK_FLAGS " ${export_file_linker_flag}")
+ endif()
+
+ add_custom_target(${target_name}_exports DEPENDS ${native_export_file})
+ set_target_properties(${target_name}_exports PROPERTIES FOLDER "Misc")
+
+ get_property(srcs TARGET ${target_name} PROPERTY SOURCES)
+ foreach(src ${srcs})
+ get_filename_component(extension ${src} EXT)
+ if(extension STREQUAL ".cpp")
+ set(first_source_file ${src})
+ break()
+ endif()
+ endforeach()
+
+ # Force re-linking when the exports file changes. Actually, it
+ # forces recompilation of the source file. The LINK_DEPENDS target
+ # property only works for makefile-based generators.
+ # FIXME: This is not safe because this will create the same target
+ # ${native_export_file} in several different file:
+ # - One where we emitted ${target_name}_exports
+ # - One where we emitted the build command for the following object.
+ # set_property(SOURCE ${first_source_file} APPEND PROPERTY
+ # OBJECT_DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${native_export_file})
+
+ set_property(DIRECTORY APPEND
+ PROPERTY ADDITIONAL_MAKE_CLEAN_FILES ${native_export_file})
+
+ add_dependencies(${target_name} ${target_name}_exports)
+
+ # Add dependency to *_exports later -- CMake issue 14747
+ list(APPEND LLVM_COMMON_DEPENDS ${target_name}_exports)
+ set(LLVM_COMMON_DEPENDS ${LLVM_COMMON_DEPENDS} PARENT_SCOPE)
+endfunction(add_llvm_symbol_exports)
+
+function(add_link_opts target_name)
+ # Pass -O3 to the linker. This enabled different optimizations on different
+ # linkers.
+ if(NOT (${CMAKE_SYSTEM_NAME} MATCHES "Darwin" OR WIN32))
+ set_property(TARGET ${target_name} APPEND_STRING PROPERTY
+ LINK_FLAGS " -Wl,-O3")
+ endif()
+
+ if(NOT LLVM_NO_DEAD_STRIP)
+ if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+ # ld64's implementation of -dead_strip breaks tools that use plugins.
+ set_property(TARGET ${target_name} APPEND_STRING PROPERTY
+ LINK_FLAGS " -Wl,-dead_strip")
+ elseif(NOT WIN32)
+ # Object files are compiled with -ffunction-data-sections.
+ # Versions of bfd ld < 2.23.1 have a bug in --gc-sections that breaks
+ # tools that use plugins. Always pass --gc-sections once we require
+ # a newer linker.
+ set_property(TARGET ${target_name} APPEND_STRING PROPERTY
+ LINK_FLAGS " -Wl,--gc-sections")
+ endif()
+ endif()
+endfunction(add_link_opts)
+
+# Set each output directory according to ${CMAKE_CONFIGURATION_TYPES}.
+# Note: Don't set variables CMAKE_*_OUTPUT_DIRECTORY any more,
+# or a certain builder, for eaxample, msbuild.exe, would be confused.
+function(set_output_directory target bindir libdir)
+ # Do nothing if *_OUTPUT_INTDIR is empty.
+ if("${bindir}" STREQUAL "")
+ return()
+ endif()
+
+ # moddir -- corresponding to LIBRARY_OUTPUT_DIRECTORY.
+ # It affects output of add_library(MODULE).
+ if(WIN32 OR CYGWIN)
+ # DLL platform
+ set(moddir ${bindir})
+ else()
+ set(moddir ${libdir})
+ endif()
+ if(NOT "${CMAKE_CFG_INTDIR}" STREQUAL ".")
+ foreach(build_mode ${CMAKE_CONFIGURATION_TYPES})
+ string(TOUPPER "${build_mode}" CONFIG_SUFFIX)
+ string(REPLACE ${CMAKE_CFG_INTDIR} ${build_mode} bi ${bindir})
+ string(REPLACE ${CMAKE_CFG_INTDIR} ${build_mode} li ${libdir})
+ string(REPLACE ${CMAKE_CFG_INTDIR} ${build_mode} mi ${moddir})
+ set_target_properties(${target} PROPERTIES "RUNTIME_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${bi})
+ set_target_properties(${target} PROPERTIES "ARCHIVE_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${li})
+ set_target_properties(${target} PROPERTIES "LIBRARY_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${mi})
+ endforeach()
+ else()
+ set_target_properties(${target} PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${bindir})
+ set_target_properties(${target} PROPERTIES ARCHIVE_OUTPUT_DIRECTORY ${libdir})
+ set_target_properties(${target} PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${moddir})
+ endif()
+endfunction()
+
+# llvm_add_library(name sources...
+# SHARED;STATIC
+# STATIC by default w/o BUILD_SHARED_LIBS.
+# SHARED by default w/ BUILD_SHARED_LIBS.
+# MODULE
+# Target ${name} might not be created on unsupported platforms.
+# Check with "if(TARGET ${name})".
+# OUTPUT_NAME name
+# Corresponds to OUTPUT_NAME in target properties.
+# DEPENDS targets...
+# Same semantics as add_dependencies().
+# LINK_COMPONENTS components...
+# Same as the variable LLVM_LINK_COMPONENTS.
+# LINK_LIBS lib_targets...
+# Same semantics as target_link_libraries().
+# ADDITIONAL_HEADERS
+# May specify header files for IDE generators.
+# )
+function(llvm_add_library name)
+ cmake_parse_arguments(ARG
+ "MODULE;SHARED;STATIC"
+ "OUTPUT_NAME"
+ "ADDITIONAL_HEADERS;DEPENDS;LINK_COMPONENTS;LINK_LIBS;OBJLIBS"
+ ${ARGN})
+ list(APPEND LLVM_COMMON_DEPENDS ${ARG_DEPENDS})
+ if(ARG_ADDITIONAL_HEADERS)
+ # Pass through ADDITIONAL_HEADERS.
+ set(ARG_ADDITIONAL_HEADERS ADDITIONAL_HEADERS ${ARG_ADDITIONAL_HEADERS})
+ endif()
+ if(ARG_OBJLIBS)
+ set(ALL_FILES ${ARG_OBJLIBS})
+ else()
+ llvm_process_sources(ALL_FILES ${ARG_UNPARSED_ARGUMENTS} ${ARG_ADDITIONAL_HEADERS})
+ endif()
+
+ if(ARG_MODULE)
+ if(ARG_SHARED OR ARG_STATIC)
+ message(WARNING "MODULE with SHARED|STATIC doesn't make sense.")
+ endif()
+ if(NOT LLVM_ENABLE_PLUGINS)
+ message(STATUS "${name} ignored -- Loadable modules not supported on this platform.")
+ return()
+ endif()
+ else()
+ if(BUILD_SHARED_LIBS AND NOT ARG_STATIC)
+ set(ARG_SHARED TRUE)
+ endif()
+ if(NOT ARG_SHARED)
+ set(ARG_STATIC TRUE)
+ endif()
+ endif()
+
+ # Generate objlib
+ if(ARG_SHARED AND ARG_STATIC)
+ # Generate an obj library for both targets.
+ set(obj_name "obj.${name}")
+ add_library(${obj_name} OBJECT EXCLUDE_FROM_ALL
+ ${ALL_FILES}
+ )
+ llvm_update_compile_flags(${obj_name})
+ set(ALL_FILES "$<TARGET_OBJECTS:${obj_name}>")
+
+ # Do add_dependencies(obj) later due to CMake issue 14747.
+ list(APPEND objlibs ${obj_name})
+
+ set_target_properties(${obj_name} PROPERTIES FOLDER "Object Libraries")
+ endif()
+
+ if(ARG_SHARED AND ARG_STATIC)
+ # static
+ set(name_static "${name}_static")
+ if(ARG_OUTPUT_NAME)
+ set(output_name OUTPUT_NAME "${ARG_OUTPUT_NAME}")
+ endif()
+ # DEPENDS has been appended to LLVM_COMMON_LIBS.
+ llvm_add_library(${name_static} STATIC
+ ${output_name}
+ OBJLIBS ${ALL_FILES} # objlib
+ LINK_LIBS ${ARG_LINK_LIBS}
+ LINK_COMPONENTS ${ARG_LINK_COMPONENTS}
+ )
+ # FIXME: Add name_static to anywhere in TARGET ${name}'s PROPERTY.
+ set(ARG_STATIC)
+ endif()
+
+ if(ARG_MODULE)
+ add_library(${name} MODULE ${ALL_FILES})
+ elseif(ARG_SHARED)
+ add_library(${name} SHARED ${ALL_FILES})
+ else()
+ add_library(${name} STATIC ${ALL_FILES})
+ endif()
+ set_output_directory(${name} ${LLVM_RUNTIME_OUTPUT_INTDIR} ${LLVM_LIBRARY_OUTPUT_INTDIR})
+ llvm_update_compile_flags(${name})
+ add_link_opts( ${name} )
+ if(ARG_OUTPUT_NAME)
+ set_target_properties(${name}
+ PROPERTIES
+ OUTPUT_NAME ${ARG_OUTPUT_NAME}
+ )
+ endif()
+
+ if(ARG_MODULE)
+ set_target_properties(${name} PROPERTIES
+ PREFIX ""
+ SUFFIX ${LLVM_PLUGIN_EXT}
+ )
+ endif()
+
+ if(ARG_SHARED)
+ if(WIN32)
+ set_target_properties(${name} PROPERTIES
+ PREFIX ""
+ )
+ endif()