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AddLLVM.cmake
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AddLLVM.cmake
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include(LLVMProcessSources)
include(LLVM-Config)
include(DetermineGCCCompatible)
function(llvm_update_compile_flags name)
get_property(sources TARGET ${name} PROPERTY SOURCES)
if("${sources}" MATCHES "\\.c(;|$)")
set(update_src_props ON)
endif()
# 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()
if(MSVC)
list(APPEND LLVM_COMPILE_FLAGS "/EHsc")
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
set(LLVM_CONFIG_HAS_RTTI YES CACHE INTERNAL "")
if(NOT (LLVM_REQUIRES_RTTI OR LLVM_ENABLE_RTTI))
set(LLVM_CONFIG_HAS_RTTI NO CACHE INTERNAL "")
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 ()
elseif(MSVC)
list(APPEND LLVM_COMPILE_FLAGS "/GR")
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}/${native_export_file}")
elseif(${CMAKE_SYSTEM_NAME} MATCHES "AIX")
set_property(TARGET ${target_name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,-bE:${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.
# in the export file, also add a linker script to version LLVM symbols (form: LLVM_N.M)
add_custom_command(OUTPUT ${native_export_file}
COMMAND echo "LLVM_${LLVM_VERSION_MAJOR} {" > ${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 ${target_name}")
if (${LLVM_LINKER_IS_SOLARISLD})
set_property(TARGET ${target_name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,-M,${CMAKE_CURRENT_BINARY_DIR}/${native_export_file}")
else()
set_property(TARGET ${target_name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,--version-script,${CMAKE_CURRENT_BINARY_DIR}/${native_export_file}")
endif()
else()
set(native_export_file "${target_name}.def")
add_custom_command(OUTPUT ${native_export_file}
COMMAND ${PYTHON_EXECUTABLE} -c "import sys;print(''.join(['EXPORTS\\n']+sys.stdin.readlines(),))"
< ${export_file} > ${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)
if(NOT WIN32 AND NOT APPLE)
# Detect what linker we have here
if( LLVM_USE_LINKER )
set(command ${CMAKE_C_COMPILER} -fuse-ld=${LLVM_USE_LINKER} -Wl,--version)
else()
set(command ${CMAKE_C_COMPILER} -Wl,--version)
endif()
execute_process(
COMMAND ${command}
OUTPUT_VARIABLE stdout
ERROR_VARIABLE stderr
)
set(LLVM_LINKER_DETECTED ON)
if("${stdout}" MATCHES "GNU gold")
set(LLVM_LINKER_IS_GOLD ON)
message(STATUS "Linker detection: GNU Gold")
elseif("${stdout}" MATCHES "^LLD")
set(LLVM_LINKER_IS_LLD ON)
message(STATUS "Linker detection: LLD")
elseif("${stdout}" MATCHES "GNU ld")
set(LLVM_LINKER_IS_GNULD ON)
message(STATUS "Linker detection: GNU ld")
elseif("${stderr}" MATCHES "Solaris Link Editors" OR
"${stdout}" MATCHES "Solaris Link Editors")
set(LLVM_LINKER_IS_SOLARISLD ON)
message(STATUS "Linker detection: Solaris ld")
else()
set(LLVM_LINKER_DETECTED OFF)
message(STATUS "Linker detection: unknown")
endif()
endif()
function(add_link_opts target_name)
# Don't use linker optimizations in debug builds since it slows down the
# linker in a context where the optimizations are not important.
if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG")
# Pass -O3 to the linker. This enabled different optimizations on different
# linkers.
if(NOT (${CMAKE_SYSTEM_NAME} MATCHES "Darwin|SunOS|AIX" OR WIN32))
set_property(TARGET ${target_name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,-O3")
endif()
if(LLVM_LINKER_IS_GOLD)
# With gold gc-sections is always safe.
set_property(TARGET ${target_name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,--gc-sections")
# Note that there is a bug with -Wl,--icf=safe so it is not safe
# to enable. See https://sourceware.org/bugzilla/show_bug.cgi?id=17704.
endif()
if(NOT LLVM_NO_DEAD_STRIP)
if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
# ld64's implementation of -dead_strip breaks tools that use plugins.
set_property(TARGET ${target_name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,-dead_strip")
elseif(${CMAKE_SYSTEM_NAME} MATCHES "SunOS")
set_property(TARGET ${target_name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,-z -Wl,discard-unused=sections")
elseif(NOT WIN32 AND NOT LLVM_LINKER_IS_GOLD)
# 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()
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)
cmake_parse_arguments(ARG "" "BINARY_DIR;LIBRARY_DIR" "" ${ARGN})
# module_dir -- corresponding to LIBRARY_OUTPUT_DIRECTORY.
# It affects output of add_library(MODULE).
if(WIN32 OR CYGWIN)
# DLL platform
set(module_dir ${ARG_BINARY_DIR})
else()
set(module_dir ${ARG_LIBRARY_DIR})
endif()
if(NOT "${CMAKE_CFG_INTDIR}" STREQUAL ".")
foreach(build_mode ${CMAKE_CONFIGURATION_TYPES})
string(TOUPPER "${build_mode}" CONFIG_SUFFIX)
if(ARG_BINARY_DIR)
string(REPLACE ${CMAKE_CFG_INTDIR} ${build_mode} bi ${ARG_BINARY_DIR})
set_target_properties(${target} PROPERTIES "RUNTIME_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${bi})
endif()
if(ARG_LIBRARY_DIR)
string(REPLACE ${CMAKE_CFG_INTDIR} ${build_mode} li ${ARG_LIBRARY_DIR})
set_target_properties(${target} PROPERTIES "ARCHIVE_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${li})
endif()
if(module_dir)
string(REPLACE ${CMAKE_CFG_INTDIR} ${build_mode} mi ${module_dir})
set_target_properties(${target} PROPERTIES "LIBRARY_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${mi})
endif()
endforeach()
else()
if(ARG_BINARY_DIR)
set_target_properties(${target} PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${ARG_BINARY_DIR})
endif()
if(ARG_LIBRARY_DIR)
set_target_properties(${target} PROPERTIES ARCHIVE_OUTPUT_DIRECTORY ${ARG_LIBRARY_DIR})
endif()
if(module_dir)
set_target_properties(${target} PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${module_dir})
endif()
endif()
endfunction()
# If on Windows and building with MSVC, add the resource script containing the
# VERSIONINFO data to the project. This embeds version resource information
# into the output .exe or .dll.
# TODO: Enable for MinGW Windows builds too.
#
function(add_windows_version_resource_file OUT_VAR)
set(sources ${ARGN})
if (MSVC AND CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")
set(resource_file ${LLVM_SOURCE_DIR}/resources/windows_version_resource.rc)
if(EXISTS ${resource_file})
set(sources ${sources} ${resource_file})
source_group("Resource Files" ${resource_file})
set(windows_resource_file ${resource_file} PARENT_SCOPE)
endif()
endif(MSVC AND CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")
set(${OUT_VAR} ${sources} PARENT_SCOPE)
endfunction(add_windows_version_resource_file)
# set_windows_version_resource_properties(name resource_file...
# VERSION_MAJOR int
# Optional major version number (defaults to LLVM_VERSION_MAJOR)
# VERSION_MINOR int
# Optional minor version number (defaults to LLVM_VERSION_MINOR)
# VERSION_PATCHLEVEL int
# Optional patchlevel version number (defaults to LLVM_VERSION_PATCH)
# VERSION_STRING
# Optional version string (defaults to PACKAGE_VERSION)
# PRODUCT_NAME
# Optional product name string (defaults to "LLVM")
# )
function(set_windows_version_resource_properties name resource_file)
cmake_parse_arguments(ARG
""
"VERSION_MAJOR;VERSION_MINOR;VERSION_PATCHLEVEL;VERSION_STRING;PRODUCT_NAME"
""
${ARGN})
if (NOT DEFINED ARG_VERSION_MAJOR)
set(ARG_VERSION_MAJOR ${LLVM_VERSION_MAJOR})
endif()
if (NOT DEFINED ARG_VERSION_MINOR)
set(ARG_VERSION_MINOR ${LLVM_VERSION_MINOR})
endif()
if (NOT DEFINED ARG_VERSION_PATCHLEVEL)
set(ARG_VERSION_PATCHLEVEL ${LLVM_VERSION_PATCH})
endif()
if (NOT DEFINED ARG_VERSION_STRING)
set(ARG_VERSION_STRING ${PACKAGE_VERSION})
endif()
if (NOT DEFINED ARG_PRODUCT_NAME)
set(ARG_PRODUCT_NAME "LLVM")
endif()
set_property(SOURCE ${resource_file}
PROPERTY COMPILE_FLAGS /nologo)
set_property(SOURCE ${resource_file}
PROPERTY COMPILE_DEFINITIONS
"RC_VERSION_FIELD_1=${ARG_VERSION_MAJOR}"
"RC_VERSION_FIELD_2=${ARG_VERSION_MINOR}"
"RC_VERSION_FIELD_3=${ARG_VERSION_PATCHLEVEL}"
"RC_VERSION_FIELD_4=0"
"RC_FILE_VERSION=\"${ARG_VERSION_STRING}\""
"RC_INTERNAL_NAME=\"${name}\""
"RC_PRODUCT_NAME=\"${ARG_PRODUCT_NAME}\""
"RC_PRODUCT_VERSION=\"${ARG_VERSION_STRING}\"")
endfunction(set_windows_version_resource_properties)
# llvm_add_library(name sources...
# SHARED;STATIC
# STATIC by default w/o BUILD_SHARED_LIBS.
# SHARED by default w/ BUILD_SHARED_LIBS.
# OBJECT
# Also create an OBJECT library target. Default if STATIC && SHARED.
# MODULE
# Target ${name} might not be created on unsupported platforms.
# Check with "if(TARGET ${name})".
# DISABLE_LLVM_LINK_LLVM_DYLIB
# Do not link this library to libLLVM, even if
# LLVM_LINK_LLVM_DYLIB is enabled.
# 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.
# SONAME
# Should set SONAME link flags and create symlinks
# PLUGIN_TOOL
# The tool (i.e. cmake target) that this plugin will link against
# )
function(llvm_add_library name)
cmake_parse_arguments(ARG
"MODULE;SHARED;STATIC;OBJECT;DISABLE_LLVM_LINK_LLVM_DYLIB;SONAME"
"OUTPUT_NAME;PLUGIN_TOOL"
"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} ${ARG_ADDITIONAL_HEADERS})
endif()
if(ARG_MODULE)
if(ARG_SHARED OR ARG_STATIC)
message(WARNING "MODULE with SHARED|STATIC doesn't make sense.")
endif()
# Plugins that link against a tool are allowed even when plugins in general are not
if(NOT LLVM_ENABLE_PLUGINS AND NOT (ARG_PLUGIN_TOOL AND LLVM_EXPORT_SYMBOLS_FOR_PLUGINS))
message(STATUS "${name} ignored -- Loadable modules not supported on this platform.")
return()
endif()
else()
if(ARG_PLUGIN_TOOL)
message(WARNING "PLUGIN_TOOL without MODULE doesn't make sense.")
endif()
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) OR ARG_OBJECT)
# 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 ${ALL_FILES})
llvm_setup_rpath(${name})
elseif(ARG_SHARED)
add_windows_version_resource_file(ALL_FILES ${ALL_FILES})
add_library(${name} SHARED ${ALL_FILES})
llvm_setup_rpath(${name})
else()
add_library(${name} STATIC ${ALL_FILES})
endif()
setup_dependency_debugging(${name} ${LLVM_COMMON_DEPENDS})
if(DEFINED windows_resource_file)
set_windows_version_resource_properties(${name} ${windows_resource_file})
set(windows_resource_file ${windows_resource_file} PARENT_SCOPE)
endif()
set_output_directory(${name} BINARY_DIR ${LLVM_RUNTIME_OUTPUT_INTDIR} LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
# $<TARGET_OBJECTS> doesn't require compile flags.
if(NOT obj_name)
llvm_update_compile_flags(${name})
endif()
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()
# Set SOVERSION on shared libraries that lack explicit SONAME
# specifier, on *nix systems that are not Darwin.
if(UNIX AND NOT APPLE AND NOT ARG_SONAME)
set_target_properties(${name}
PROPERTIES
# Since 4.0.0, the ABI version is indicated by the major version
SOVERSION ${LLVM_VERSION_MAJOR}
VERSION ${LLVM_VERSION_MAJOR}${LLVM_VERSION_SUFFIX})
endif()
endif()
if(ARG_MODULE OR ARG_SHARED)
# Do not add -Dname_EXPORTS to the command-line when building files in this
# target. Doing so is actively harmful for the modules build because it
# creates extra module variants, and not useful because we don't use these
# macros.
set_target_properties( ${name} PROPERTIES DEFINE_SYMBOL "" )
if (LLVM_EXPORTED_SYMBOL_FILE)
add_llvm_symbol_exports( ${name} ${LLVM_EXPORTED_SYMBOL_FILE} )
endif()
endif()
if(ARG_SHARED AND UNIX)
if(NOT APPLE AND ARG_SONAME)
get_target_property(output_name ${name} OUTPUT_NAME)
if(${output_name} STREQUAL "output_name-NOTFOUND")
set(output_name ${name})
endif()
set(library_name ${output_name}-${LLVM_VERSION_MAJOR}${LLVM_VERSION_SUFFIX})
set(api_name ${output_name}-${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}${LLVM_VERSION_SUFFIX})
set_target_properties(${name} PROPERTIES OUTPUT_NAME ${library_name})
llvm_install_library_symlink(${api_name} ${library_name} SHARED
COMPONENT ${name}
ALWAYS_GENERATE)
llvm_install_library_symlink(${output_name} ${library_name} SHARED
COMPONENT ${name}
ALWAYS_GENERATE)
endif()
endif()
if(ARG_MODULE AND LLVM_EXPORT_SYMBOLS_FOR_PLUGINS AND ARG_PLUGIN_TOOL AND (WIN32 OR CYGWIN))
# On DLL platforms symbols are imported from the tool by linking against it.
set(llvm_libs ${ARG_PLUGIN_TOOL})
elseif (DEFINED LLVM_LINK_COMPONENTS OR DEFINED ARG_LINK_COMPONENTS)
if (LLVM_LINK_LLVM_DYLIB AND NOT ARG_DISABLE_LLVM_LINK_LLVM_DYLIB)
set(llvm_libs LLVM)
else()
llvm_map_components_to_libnames(llvm_libs
${ARG_LINK_COMPONENTS}
${LLVM_LINK_COMPONENTS}
)
endif()
else()
# Components have not been defined explicitly in CMake, so add the
# dependency information for this library as defined by LLVMBuild.
#
# It would be nice to verify that we have the dependencies for this library
# name, but using get_property(... SET) doesn't suffice to determine if a
# property has been set to an empty value.
get_property(lib_deps GLOBAL PROPERTY LLVMBUILD_LIB_DEPS_${name})
endif()
if(ARG_STATIC)
set(libtype INTERFACE)
else()
# We can use PRIVATE since SO knows its dependent libs.
set(libtype PRIVATE)
endif()
target_link_libraries(${name} ${libtype}
${ARG_LINK_LIBS}
${lib_deps}
${llvm_libs}
)
if(LLVM_COMMON_DEPENDS)
add_dependencies(${name} ${LLVM_COMMON_DEPENDS})
# Add dependencies also to objlibs.
# CMake issue 14747 -- add_dependencies() might be ignored to objlib's user.
foreach(objlib ${objlibs})
add_dependencies(${objlib} ${LLVM_COMMON_DEPENDS})
endforeach()
endif()
if(ARG_SHARED OR ARG_MODULE)
llvm_externalize_debuginfo(${name})
endif()
endfunction()
function(add_llvm_install_targets target)
cmake_parse_arguments(ARG "" "COMPONENT;PREFIX" "DEPENDS" ${ARGN})
if(ARG_COMPONENT)
set(component_option -DCMAKE_INSTALL_COMPONENT="${ARG_COMPONENT}")
endif()
if(ARG_PREFIX)
set(prefix_option -DCMAKE_INSTALL_PREFIX="${ARG_PREFIX}")
endif()
add_custom_target(${target}
DEPENDS ${ARG_DEPENDS}
COMMAND "${CMAKE_COMMAND}"
${component_option}
${prefix_option}
-P "${CMAKE_BINARY_DIR}/cmake_install.cmake"
USES_TERMINAL)
add_custom_target(${target}-stripped
DEPENDS ${ARG_DEPENDS}
COMMAND "${CMAKE_COMMAND}"
${component_option}
${prefix_option}
-DCMAKE_INSTALL_DO_STRIP=1
-P "${CMAKE_BINARY_DIR}/cmake_install.cmake"
USES_TERMINAL)
endfunction()
macro(add_llvm_library name)
cmake_parse_arguments(ARG
"SHARED;BUILDTREE_ONLY"
""
""
${ARGN})
if( BUILD_SHARED_LIBS OR ARG_SHARED )
llvm_add_library(${name} SHARED ${ARG_UNPARSED_ARGUMENTS})
else()
llvm_add_library(${name} ${ARG_UNPARSED_ARGUMENTS})
endif()
# Libraries that are meant to only be exposed via the build tree only are
# never installed and are only exported as a target in the special build tree
# config file.
if (NOT ARG_BUILDTREE_ONLY)
set_property( GLOBAL APPEND PROPERTY LLVM_LIBS ${name} )
endif()
if( EXCLUDE_FROM_ALL )
set_target_properties( ${name} PROPERTIES EXCLUDE_FROM_ALL ON)
elseif(ARG_BUILDTREE_ONLY)
set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS_BUILDTREE_ONLY ${name})
else()
if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY OR ${name} STREQUAL "LTO" OR
(LLVM_LINK_LLVM_DYLIB AND ${name} STREQUAL "LLVM"))
set(install_dir lib${LLVM_LIBDIR_SUFFIX})
if(ARG_SHARED OR BUILD_SHARED_LIBS)
if(WIN32 OR CYGWIN OR MINGW)
set(install_type RUNTIME)
set(install_dir bin)
else()
set(install_type LIBRARY)
endif()
else()
set(install_type ARCHIVE)
endif()
if(${name} IN_LIST LLVM_DISTRIBUTION_COMPONENTS OR
NOT LLVM_DISTRIBUTION_COMPONENTS)
set(export_to_llvmexports EXPORT LLVMExports)
set_property(GLOBAL PROPERTY LLVM_HAS_EXPORTS True)
endif()
install(TARGETS ${name}
${export_to_llvmexports}
${install_type} DESTINATION ${install_dir}
COMPONENT ${name})
if (NOT CMAKE_CONFIGURATION_TYPES)
add_llvm_install_targets(install-${name}
DEPENDS ${name}
COMPONENT ${name})
endif()
endif()
set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${name})
endif()
set_target_properties(${name} PROPERTIES FOLDER "Libraries")
endmacro(add_llvm_library name)
macro(add_llvm_loadable_module name)
llvm_add_library(${name} MODULE ${ARGN})
if(NOT TARGET ${name})
# Add empty "phony" target
add_custom_target(${name})
else()
if( EXCLUDE_FROM_ALL )
set_target_properties( ${name} PROPERTIES EXCLUDE_FROM_ALL ON)
else()
if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
if(WIN32 OR CYGWIN)
# DLL platform
set(dlldir "bin")
else()
set(dlldir "lib${LLVM_LIBDIR_SUFFIX}")
endif()
if(${name} IN_LIST LLVM_DISTRIBUTION_COMPONENTS OR
NOT LLVM_DISTRIBUTION_COMPONENTS)
set(export_to_llvmexports EXPORT LLVMExports)
set_property(GLOBAL PROPERTY LLVM_HAS_EXPORTS True)
endif()
install(TARGETS ${name}
${export_to_llvmexports}
LIBRARY DESTINATION ${dlldir}
ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX})
endif()
set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${name})
endif()
endif()
set_target_properties(${name} PROPERTIES FOLDER "Loadable modules")
endmacro(add_llvm_loadable_module name)
macro(add_llvm_executable name)
cmake_parse_arguments(ARG "DISABLE_LLVM_LINK_LLVM_DYLIB;IGNORE_EXTERNALIZE_DEBUGINFO;NO_INSTALL_RPATH" "" "DEPENDS" ${ARGN})
llvm_process_sources( ALL_FILES ${ARG_UNPARSED_ARGUMENTS} )
list(APPEND LLVM_COMMON_DEPENDS ${ARG_DEPENDS})
# Generate objlib
if(LLVM_ENABLE_OBJLIB)
# Generate an obj library for both targets.
set(obj_name "obj.${name}")
add_library(${obj_name} OBJECT EXCLUDE_FROM_ALL
${ALL_FILES}
)
llvm_update_compile_flags(${obj_name})
set(ALL_FILES "$<TARGET_OBJECTS:${obj_name}>")
set_target_properties(${obj_name} PROPERTIES FOLDER "Object Libraries")
endif()
add_windows_version_resource_file(ALL_FILES ${ALL_FILES})
if(XCODE)
# Note: the dummy.cpp source file provides no definitions. However,
# it forces Xcode to properly link the static library.
list(APPEND ALL_FILES "${LLVM_MAIN_SRC_DIR}/cmake/dummy.cpp")
endif()
if( EXCLUDE_FROM_ALL )
add_executable(${name} EXCLUDE_FROM_ALL ${ALL_FILES})
else()
add_executable(${name} ${ALL_FILES})
endif()
setup_dependency_debugging(${name} ${LLVM_COMMON_DEPENDS})
if(NOT ARG_NO_INSTALL_RPATH)
llvm_setup_rpath(${name})
endif()
if(DEFINED windows_resource_file)
set_windows_version_resource_properties(${name} ${windows_resource_file})
endif()
# $<TARGET_OBJECTS> doesn't require compile flags.
if(NOT LLVM_ENABLE_OBJLIB)
llvm_update_compile_flags(${name})
endif()
add_link_opts( ${name} )
# Do not add -Dname_EXPORTS to the command-line when building files in this
# target. Doing so is actively harmful for the modules build because it
# creates extra module variants, and not useful because we don't use these
# macros.
set_target_properties( ${name} PROPERTIES DEFINE_SYMBOL "" )
if (LLVM_EXPORTED_SYMBOL_FILE)
add_llvm_symbol_exports( ${name} ${LLVM_EXPORTED_SYMBOL_FILE} )
endif(LLVM_EXPORTED_SYMBOL_FILE)
if (LLVM_LINK_LLVM_DYLIB AND NOT ARG_DISABLE_LLVM_LINK_LLVM_DYLIB)
set(USE_SHARED USE_SHARED)
endif()
set(EXCLUDE_FROM_ALL OFF)
set_output_directory(${name} BINARY_DIR ${LLVM_RUNTIME_OUTPUT_INTDIR} LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
llvm_config( ${name} ${USE_SHARED} ${LLVM_LINK_COMPONENTS} )
if( LLVM_COMMON_DEPENDS )
add_dependencies( ${name} ${LLVM_COMMON_DEPENDS} )
endif( LLVM_COMMON_DEPENDS )
if(NOT ARG_IGNORE_EXTERNALIZE_DEBUGINFO)
llvm_externalize_debuginfo(${name})
endif()
if (LLVM_PTHREAD_LIB)
# libpthreads overrides some standard library symbols, so main
# executable must be linked with it in order to provide consistent
# API for all shared libaries loaded by this executable.
target_link_libraries(${name} PRIVATE ${LLVM_PTHREAD_LIB})
endif()
endmacro(add_llvm_executable name)
function(export_executable_symbols target)
if (LLVM_EXPORTED_SYMBOL_FILE)
# The symbol file should contain the symbols we want the executable to
# export
set_target_properties(${target} PROPERTIES ENABLE_EXPORTS 1)
elseif (LLVM_EXPORT_SYMBOLS_FOR_PLUGINS)
# Extract the symbols to export from the static libraries that the
# executable links against.
set_target_properties(${target} PROPERTIES ENABLE_EXPORTS 1)
set(exported_symbol_file ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/${target}.symbols)
# We need to consider not just the direct link dependencies, but also the
# transitive link dependencies. Do this by starting with the set of direct
# dependencies, then the dependencies of those dependencies, and so on.
get_target_property(new_libs ${target} LINK_LIBRARIES)
set(link_libs ${new_libs})
while(NOT "${new_libs}" STREQUAL "")
foreach(lib ${new_libs})
if(TARGET ${lib})
get_target_property(lib_type ${lib} TYPE)
if("${lib_type}" STREQUAL "STATIC_LIBRARY")
list(APPEND static_libs ${lib})
else()
list(APPEND other_libs ${lib})
endif()
get_target_property(transitive_libs ${lib} INTERFACE_LINK_LIBRARIES)
foreach(transitive_lib ${transitive_libs})
list(FIND link_libs ${transitive_lib} idx)
if(TARGET ${transitive_lib} AND idx EQUAL -1)
list(APPEND newer_libs ${transitive_lib})
list(APPEND link_libs ${transitive_lib})
endif()
endforeach(transitive_lib)
endif()
endforeach(lib)
set(new_libs ${newer_libs})
set(newer_libs "")
endwhile()
if (MSVC)
set(mangling microsoft)
else()
set(mangling itanium)
endif()
add_custom_command(OUTPUT ${exported_symbol_file}
COMMAND ${PYTHON_EXECUTABLE} ${LLVM_MAIN_SRC_DIR}/utils/extract_symbols.py --mangling=${mangling} ${static_libs} -o ${exported_symbol_file}
WORKING_DIRECTORY ${LLVM_LIBRARY_OUTPUT_INTDIR}
DEPENDS ${LLVM_MAIN_SRC_DIR}/utils/extract_symbols.py ${static_libs}
VERBATIM
COMMENT "Generating export list for ${target}")
add_llvm_symbol_exports( ${target} ${exported_symbol_file} )
# If something links against this executable then we want a
# transitive link against only the libraries whose symbols
# we aren't exporting.
set_target_properties(${target} PROPERTIES INTERFACE_LINK_LIBRARIES "${other_libs}")
# The default import library suffix that cmake uses for cygwin/mingw is
# ".dll.a", but for clang.exe that causes a collision with libclang.dll,
# where the import libraries of both get named libclang.dll.a. Use a suffix
# of ".exe.a" to avoid this.
if(CYGWIN OR MINGW)
set_target_properties(${target} PROPERTIES IMPORT_SUFFIX ".exe.a")
endif()
elseif(NOT (WIN32 OR CYGWIN))
# On Windows auto-exporting everything doesn't work because of the limit on
# the size of the exported symbol table, but on other platforms we can do
# it without any trouble.
set_target_properties(${target} PROPERTIES ENABLE_EXPORTS 1)
if (APPLE)
set_property(TARGET ${target} APPEND_STRING PROPERTY
LINK_FLAGS " -rdynamic")
endif()
endif()
endfunction()
if(NOT LLVM_TOOLCHAIN_TOOLS)
set (LLVM_TOOLCHAIN_TOOLS
llvm-ar
llvm-ranlib
llvm-lib
llvm-objdump
)
endif()
macro(add_llvm_tool name)
if( NOT LLVM_BUILD_TOOLS )
set(EXCLUDE_FROM_ALL ON)
endif()
add_llvm_executable(${name} ${ARGN})
if ( ${name} IN_LIST LLVM_TOOLCHAIN_TOOLS OR NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
if( LLVM_BUILD_TOOLS )
if(${name} IN_LIST LLVM_DISTRIBUTION_COMPONENTS OR
NOT LLVM_DISTRIBUTION_COMPONENTS)
set(export_to_llvmexports EXPORT LLVMExports)
set_property(GLOBAL PROPERTY LLVM_HAS_EXPORTS True)
endif()
install(TARGETS ${name}
${export_to_llvmexports}
RUNTIME DESTINATION ${LLVM_TOOLS_INSTALL_DIR}
COMPONENT ${name})
if (NOT CMAKE_CONFIGURATION_TYPES)
add_llvm_install_targets(install-${name}
DEPENDS ${name}
COMPONENT ${name})
endif()
endif()
endif()
if( LLVM_BUILD_TOOLS )
set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${name})
endif()
set_target_properties(${name} PROPERTIES FOLDER "Tools")
endmacro(add_llvm_tool name)
macro(add_llvm_example name)
if( NOT LLVM_BUILD_EXAMPLES )
set(EXCLUDE_FROM_ALL ON)
endif()
add_llvm_executable(${name} ${ARGN})
if( LLVM_BUILD_EXAMPLES )
install(TARGETS ${name} RUNTIME DESTINATION examples)
endif()
set_target_properties(${name} PROPERTIES FOLDER "Examples")
endmacro(add_llvm_example name)
# This is a macro that is used to create targets for executables that are needed
# for development, but that are not intended to be installed by default.
macro(add_llvm_utility name)
if ( NOT LLVM_BUILD_UTILS )
set(EXCLUDE_FROM_ALL ON)
endif()
add_llvm_executable(${name} DISABLE_LLVM_LINK_LLVM_DYLIB ${ARGN})
set_target_properties(${name} PROPERTIES FOLDER "Utils")
if( LLVM_INSTALL_UTILS AND LLVM_BUILD_UTILS )
install (TARGETS ${name}
RUNTIME DESTINATION ${LLVM_UTILS_INSTALL_DIR}
COMPONENT ${name})
if (NOT CMAKE_CONFIGURATION_TYPES)
add_llvm_install_targets(install-${name}
DEPENDS ${name}
COMPONENT ${name})
endif()
endif()
endmacro(add_llvm_utility name)
macro(add_llvm_fuzzer name)
cmake_parse_arguments(ARG "" "DUMMY_MAIN" "" ${ARGN})
if( LLVM_LIB_FUZZING_ENGINE )
set(LLVM_OPTIONAL_SOURCES ${ARG_DUMMY_MAIN})
add_llvm_executable(${name} ${ARG_UNPARSED_ARGUMENTS})
target_link_libraries(${name} PRIVATE ${LLVM_LIB_FUZZING_ENGINE})
set_target_properties(${name} PROPERTIES FOLDER "Fuzzers")
elseif( LLVM_USE_SANITIZE_COVERAGE )
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=fuzzer")
set(LLVM_OPTIONAL_SOURCES ${ARG_DUMMY_MAIN})
add_llvm_executable(${name} ${ARG_UNPARSED_ARGUMENTS})
set_target_properties(${name} PROPERTIES FOLDER "Fuzzers")
elseif( ARG_DUMMY_MAIN )
add_llvm_executable(${name} ${ARG_DUMMY_MAIN} ${ARG_UNPARSED_ARGUMENTS})
set_target_properties(${name} PROPERTIES FOLDER "Fuzzers")
endif()
endmacro()
macro(add_llvm_target target_name)
include_directories(BEFORE
${CMAKE_CURRENT_BINARY_DIR}
${CMAKE_CURRENT_SOURCE_DIR})
add_llvm_library(LLVM${target_name} ${ARGN})
set( CURRENT_LLVM_TARGET LLVM${target_name} )
endmacro(add_llvm_target)
function(canonicalize_tool_name name output)
string(REPLACE "${CMAKE_CURRENT_SOURCE_DIR}/" "" nameStrip ${name})
string(REPLACE "-" "_" nameUNDERSCORE ${nameStrip})
string(TOUPPER ${nameUNDERSCORE} nameUPPER)
set(${output} "${nameUPPER}" PARENT_SCOPE)
endfunction(canonicalize_tool_name)
# Custom add_subdirectory wrapper
# Takes in a project name (i.e. LLVM), the subdirectory name, and an optional
# path if it differs from the name.
macro(add_llvm_subdirectory project type name)
set(add_llvm_external_dir "${ARGN}")
if("${add_llvm_external_dir}" STREQUAL "")
set(add_llvm_external_dir ${name})
endif()
canonicalize_tool_name(${name} nameUPPER)
if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${add_llvm_external_dir}/CMakeLists.txt)
# Treat it as in-tree subproject.
option(${project}_${type}_${nameUPPER}_BUILD
"Whether to build ${name} as part of ${project}" On)
mark_as_advanced(${project}_${type}_${name}_BUILD)
if(${project}_${type}_${nameUPPER}_BUILD)
add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/${add_llvm_external_dir} ${add_llvm_external_dir})
# Don't process it in add_llvm_implicit_projects().
set(${project}_${type}_${nameUPPER}_BUILD OFF)
endif()
else()
set(LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR
"${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR}"
CACHE PATH "Path to ${name} source directory")
set(${project}_${type}_${nameUPPER}_BUILD_DEFAULT ON)
if(NOT LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR OR NOT EXISTS ${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR})
set(${project}_${type}_${nameUPPER}_BUILD_DEFAULT OFF)
endif()
if("${LLVM_EXTERNAL_${nameUPPER}_BUILD}" STREQUAL "OFF")
set(${project}_${type}_${nameUPPER}_BUILD_DEFAULT OFF)
endif()
option(${project}_${type}_${nameUPPER}_BUILD
"Whether to build ${name} as part of LLVM"
${${project}_${type}_${nameUPPER}_BUILD_DEFAULT})
if (${project}_${type}_${nameUPPER}_BUILD)
if(EXISTS ${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR})
add_subdirectory(${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR} ${add_llvm_external_dir})
elseif(NOT "${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR}" STREQUAL "")
message(WARNING "Nonexistent directory for ${name}: ${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR}")
endif()
# FIXME: It'd be redundant.
set(${project}_${type}_${nameUPPER}_BUILD Off)
endif()
endif()
endmacro()
# Add external project that may want to be built as part of llvm such as Clang,
# lld, and Polly. This adds two options. One for the source directory of the