include(ExternalProject)
include(CompilerRTUtils)
include(HandleCompilerRT)
function(set_target_output_directories target output_dir)
# For RUNTIME_OUTPUT_DIRECTORY variable, Multi-configuration generators
# append a per-configuration subdirectory to the specified directory.
# To avoid the appended folder, the configuration specific variable must be
# set 'RUNTIME_OUTPUT_DIRECTORY_${CONF}':
# RUNTIME_OUTPUT_DIRECTORY_DEBUG, RUNTIME_OUTPUT_DIRECTORY_RELEASE, ...
if(CMAKE_CONFIGURATION_TYPES)
foreach(build_mode ${CMAKE_CONFIGURATION_TYPES})
string(TOUPPER "${build_mode}" CONFIG_SUFFIX)
set_target_properties("${target}" PROPERTIES
"ARCHIVE_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${output_dir}
"LIBRARY_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${output_dir}
"RUNTIME_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${output_dir})
endforeach()
else()
set_target_properties("${target}" PROPERTIES
ARCHIVE_OUTPUT_DIRECTORY ${output_dir}
LIBRARY_OUTPUT_DIRECTORY ${output_dir}
RUNTIME_OUTPUT_DIRECTORY ${output_dir})
endif()
endfunction()
# Tries to add an "object library" target for a given list of OSs and/or
# architectures with name "<name>.<arch>" for non-Darwin platforms if
# architecture can be targeted, and "<name>.<os>" for Darwin platforms.
# add_compiler_rt_object_libraries(<name>
# OS <os names>
# ARCHS <architectures>
# SOURCES <source files>
# CFLAGS <compile flags>
# DEFS <compile definitions>
# DEPS <dependencies>
# ADDITIONAL_HEADERS <header files>)
function(add_compiler_rt_object_libraries name)
cmake_parse_arguments(LIB "" "" "OS;ARCHS;SOURCES;CFLAGS;DEFS;DEPS;ADDITIONAL_HEADERS"
${ARGN})
set(libnames)
if(APPLE)
foreach(os ${LIB_OS})
set(libname "${name}.${os}")
set(libnames ${libnames} ${libname})
set(extra_cflags_${libname} ${DARWIN_${os}_CFLAGS})
list_intersect(LIB_ARCHS_${libname} DARWIN_${os}_ARCHS LIB_ARCHS)
endforeach()
else()
foreach(arch ${LIB_ARCHS})
set(libname "${name}.${arch}")
set(libnames ${libnames} ${libname})
set(extra_cflags_${libname} ${TARGET_${arch}_CFLAGS})
if(NOT CAN_TARGET_${arch})
message(FATAL_ERROR "Architecture ${arch} can't be targeted")
return()
endif()
endforeach()
endif()
# Add headers to LIB_SOURCES for IDEs
compiler_rt_process_sources(LIB_SOURCES
${LIB_SOURCES}
ADDITIONAL_HEADERS
${LIB_ADDITIONAL_HEADERS}
)
foreach(libname ${libnames})
add_library(${libname} OBJECT ${LIB_SOURCES})
if(LIB_DEPS)
add_dependencies(${libname} ${LIB_DEPS})
endif()
# Strip out -msse3 if this isn't macOS.
set(target_flags ${LIB_CFLAGS})
if(APPLE AND NOT "${libname}" MATCHES ".*\.osx.*")
list(REMOVE_ITEM target_flags "-msse3")
endif()
# Build the macOS sanitizers with Mac Catalyst support.
if (APPLE AND
"${COMPILER_RT_ENABLE_MACCATALYST}" AND
"${libname}" MATCHES ".*\.osx.*")
foreach(arch ${LIB_ARCHS_${libname}})
list(APPEND target_flags
"SHELL:-target ${arch}-apple-macos${DARWIN_osx_MIN_VER} -darwin-target-variant ${arch}-apple-ios13.1-macabi")
endforeach()
endif()
set_target_compile_flags(${libname}
${extra_cflags_${libname}} ${target_flags})
set_property(TARGET ${libname} APPEND PROPERTY
COMPILE_DEFINITIONS ${LIB_DEFS})
set_target_properties(${libname} PROPERTIES FOLDER "Compiler-RT/Libraries")
if(APPLE)
set_target_properties(${libname} PROPERTIES
OSX_ARCHITECTURES "${LIB_ARCHS_${libname}}")
endif()
endforeach()
endfunction()
# Takes a list of object library targets, and a suffix and appends the proper
# TARGET_OBJECTS string to the output variable.
# format_object_libs(<output> <suffix> ...)
macro(format_object_libs output suffix)
foreach(lib ${ARGN})
list(APPEND ${output} $<TARGET_OBJECTS:${lib}.${suffix}>)
endforeach()
endmacro()
function(add_compiler_rt_component name)
add_custom_target(${name})
set_target_properties(${name} PROPERTIES FOLDER "Compiler-RT/Components")
if(COMMAND runtime_register_component)
runtime_register_component(${name})
endif()
add_dependencies(compiler-rt ${name})
endfunction()
macro(set_output_name output name arch)
if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR)
set(${output} ${name})
else()
if(ANDROID AND ${arch} STREQUAL "i386")
set(${output} "${name}-i686${COMPILER_RT_OS_SUFFIX}")
elseif("${arch}" MATCHES "^arm")
if(COMPILER_RT_DEFAULT_TARGET_ONLY)
set(triple "${COMPILER_RT_DEFAULT_TARGET_TRIPLE}")
else()
set(triple "${LLVM_TARGET_TRIPLE}")
endif()
# Except for baremetal, when using arch-suffixed runtime library names,
# clang only looks for libraries named "arm" or "armhf", see
# getArchNameForCompilerRTLib in clang. Therefore, try to inspect both
# the arch name and the triple if it seems like we're building an armhf
# target.
if (COMPILER_RT_BAREMETAL_BUILD)
set(${output} "${name}-${arch}${COMPILER_RT_OS_SUFFIX}")
elseif ("${arch}" MATCHES "hf$" OR "${triple}" MATCHES "hf$")
set(${output} "${name}-armhf${COMPILER_RT_OS_SUFFIX}")
else()
set(${output} "${name}-arm${COMPILER_RT_OS_SUFFIX}")
endif()
else()
set(${output} "${name}-${arch}${COMPILER_RT_OS_SUFFIX}")
endif()
endif()
endmacro()
# Adds static or shared runtime for a list of architectures and operating
# systems and puts it in the proper directory in the build and install trees.
# add_compiler_rt_runtime(<name>
# {OBJECT|STATIC|SHARED|MODULE}
# ARCHS <architectures>
# OS <os list>
# SOURCES <source files>
# CFLAGS <compile flags>
# LINK_FLAGS <linker flags>
# DEFS <compile definitions>
# DEPS <dependencies>
# LINK_LIBS <linked libraries> (only for shared library)
# OBJECT_LIBS <object libraries to use as sources>
# PARENT_TARGET <convenience parent target>
# ADDITIONAL_HEADERS <header files>)
function(add_compiler_rt_runtime name type)
if(NOT type MATCHES "^(OBJECT|STATIC|SHARED|MODULE)$")
message(FATAL_ERROR
"type argument must be OBJECT, STATIC, SHARED or MODULE")
return()
endif()
cmake_parse_arguments(LIB
""
"PARENT_TARGET"
"OS;ARCHS;SOURCES;CFLAGS;LINK_FLAGS;DEFS;DEPS;LINK_LIBS;OBJECT_LIBS;ADDITIONAL_HEADERS"
${ARGN})
set(libnames)
# Until we support this some other way, build compiler-rt runtime without LTO
# to allow non-LTO projects to link with it. GPU targets can currently only be
# distributed as LLVM-IR and ignore this.
if(COMPILER_RT_HAS_FNO_LTO_FLAG AND NOT COMPILER_RT_GPU_BUILD)
set(NO_LTO_FLAGS "-fno-lto")
else()
set(NO_LTO_FLAGS "")
endif()
# By default do not instrument or use profdata for compiler-rt.
set(NO_PGO_FLAGS "")
if(NOT COMPILER_RT_ENABLE_PGO)
if(LLVM_PROFDATA_FILE AND COMPILER_RT_HAS_FNO_PROFILE_INSTR_USE_FLAG)
list(APPEND NO_PGO_FLAGS "-fno-profile-instr-use")
endif()
if(LLVM_BUILD_INSTRUMENTED MATCHES IR AND COMPILER_RT_HAS_FNO_PROFILE_GENERATE_FLAG)
list(APPEND NO_PGO_FLAGS "-fno-profile-generate")
elseif((LLVM_BUILD_INSTRUMENTED OR LLVM_BUILD_INSTRUMENTED_COVERAGE) AND COMPILER_RT_HAS_FNO_PROFILE_INSTR_GENERATE_FLAG)
list(APPEND NO_PGO_FLAGS "-fno-profile-instr-generate")
if(LLVM_BUILD_INSTRUMENTED_COVERAGE AND COMPILER_RT_HAS_FNO_COVERAGE_MAPPING_FLAG)
list(APPEND NO_PGO_FLAGS "-fno-coverage-mapping")
endif()
endif()
endif()
list(LENGTH LIB_SOURCES LIB_SOURCES_LENGTH)
if (${LIB_SOURCES_LENGTH} GREATER 0)
# Add headers to LIB_SOURCES for IDEs. It doesn't make sense to
# do this for a runtime library that only consists of OBJECT
# libraries, so only add the headers when source files are present.
compiler_rt_process_sources(LIB_SOURCES
${LIB_SOURCES}
ADDITIONAL_HEADERS
${LIB_ADDITIONAL_HEADERS}
)
endif()
if(APPLE)
foreach(os ${LIB_OS})
# Strip out -msse3 if this isn't macOS.
list(LENGTH LIB_CFLAGS HAS_EXTRA_CFLAGS)
if(HAS_EXTRA_CFLAGS AND NOT "${os}" MATCHES "^(osx)$")
list(REMOVE_ITEM LIB_CFLAGS "-msse3")
endif()
if(type STREQUAL "STATIC")
set(libname "${name}_${os}")
else()
set(libname "${name}_${os}_dynamic")
set(extra_link_flags_${libname} ${DARWIN_${os}_LINK_FLAGS} ${LIB_LINK_FLAGS})
endif()
list_intersect(LIB_ARCHS_${libname} DARWIN_${os}_ARCHS LIB_ARCHS)
if(LIB_ARCHS_${libname})
list(APPEND libnames ${libname})
set(extra_cflags_${libname} ${DARWIN_${os}_CFLAGS} ${NO_LTO_FLAGS} ${NO_PGO_FLAGS} ${LIB_CFLAGS})
set(output_name_${libname} ${libname}${COMPILER_RT_OS_SUFFIX})
set(sources_${libname} ${LIB_SOURCES})
format_object_libs(sources_${libname} ${os} ${LIB_OBJECT_LIBS})
get_compiler_rt_output_dir(${COMPILER_RT_DEFAULT_TARGET_ARCH} output_dir_${libname})
get_compiler_rt_install_dir(${COMPILER_RT_DEFAULT_TARGET_ARCH} install_dir_${libname})
endif()
# Build the macOS sanitizers with Mac Catalyst support.
if ("${COMPILER_RT_ENABLE_MACCATALYST}" AND
"${os}" MATCHES "^(osx)$")
foreach(arch ${LIB_ARCHS_${libname}})
list(APPEND extra_cflags_${libname}
"SHELL:-target ${arch}-apple-macos${DARWIN_osx_MIN_VER} -darwin-target-variant ${arch}-apple-ios13.1-macabi")
list(APPEND extra_link_flags_${libname}
"SHELL:-target ${arch}-apple-macos${DARWIN_osx_MIN_VER} -darwin-target-variant ${arch}-apple-ios13.1-macabi")
endforeach()
endif()
endforeach()
else()
foreach(arch ${LIB_ARCHS})
if(NOT CAN_TARGET_${arch})
message(FATAL_ERROR "Architecture ${arch} can't be targeted")
return()
endif()
if(type STREQUAL "OBJECT")
set(libname "${name}-${arch}")
set_output_name(output_name_${libname} ${name}${COMPILER_RT_OS_SUFFIX} ${arch})
elseif(type STREQUAL "STATIC")
set(libname "${name}-${arch}")
set_output_name(output_name_${libname} ${name} ${arch})
else()
set(libname "${name}-dynamic-${arch}")
set(extra_cflags_${libname} ${TARGET_${arch}_CFLAGS} ${LIB_CFLAGS})
set(extra_link_flags_${libname} ${TARGET_${arch}_LINK_FLAGS} ${LIB_LINK_FLAGS})
if(WIN32)
set_output_name(output_name_${libname} ${name}_dynamic ${arch})
else()
set_output_name(output_name_${libname} ${name} ${arch})
endif()
endif()
if(COMPILER_RT_USE_BUILTINS_LIBRARY AND NOT type STREQUAL "OBJECT" AND
NOT name STREQUAL "clang_rt.builtins")
get_compiler_rt_target(${arch} target)
find_compiler_rt_library(builtins builtins_${libname} TARGET ${target})
if(builtins_${libname} STREQUAL "NOTFOUND")
message(FATAL_ERROR "Cannot find builtins library for the target architecture")
endif()
endif()
set(sources_${libname} ${LIB_SOURCES})
format_object_libs(sources_${libname} ${arch} ${LIB_OBJECT_LIBS})
set(libnames ${libnames} ${libname})
set(extra_cflags_${libname} ${TARGET_${arch}_CFLAGS} ${NO_LTO_FLAGS} ${NO_PGO_FLAGS} ${LIB_CFLAGS})
get_compiler_rt_output_dir(${arch} output_dir_${libname})
get_compiler_rt_install_dir(${arch} install_dir_${libname})
endforeach()
endif()
if(NOT libnames)
return()
endif()
if(LIB_PARENT_TARGET)
# If the parent targets aren't created we should create them
if(NOT TARGET ${LIB_PARENT_TARGET})
add_custom_target(${LIB_PARENT_TARGET})
set_target_properties(${LIB_PARENT_TARGET} PROPERTIES
FOLDER "Compiler-RT/Runtimes")
endif()
endif()
foreach(libname ${libnames})
# If you are using a multi-configuration generator we don't generate
# per-library install rules, so we fall back to the parent target COMPONENT
if(CMAKE_CONFIGURATION_TYPES AND LIB_PARENT_TARGET)
set(COMPONENT_OPTION COMPONENT ${LIB_PARENT_TARGET})
else()
set(COMPONENT_OPTION COMPONENT ${libname})
endif()
if(type STREQUAL "SHARED")
list(APPEND LIB_DEFS COMPILER_RT_SHARED_LIB)
endif()
if(type STREQUAL "OBJECT")
if(CMAKE_C_COMPILER_ID MATCHES Clang AND CMAKE_C_COMPILER_TARGET)
list(APPEND extra_cflags_${libname} "--target=${CMAKE_C_COMPILER_TARGET}")
endif()
if(CMAKE_SYSROOT)
list(APPEND extra_cflags_${libname} "--sysroot=${CMAKE_SYSROOT}")
endif()
string(REPLACE ";" " " extra_cflags_${libname} "${extra_cflags_${libname}}")
string(REGEX MATCHALL "<[A-Za-z0-9_]*>" substitutions
${CMAKE_C_COMPILE_OBJECT})
set(compile_command_${libname} "${CMAKE_C_COMPILE_OBJECT}")
set(output_file_${libname} ${output_name_${libname}}${CMAKE_C_OUTPUT_EXTENSION})
foreach(substitution ${substitutions})
if(substitution STREQUAL "<CMAKE_C_COMPILER>")
string(REPLACE "<CMAKE_C_COMPILER>" "${CMAKE_C_COMPILER} ${CMAKE_C_COMPILER_ARG1}"
compile_command_${libname} ${compile_command_${libname}})
elseif(substitution STREQUAL "<OBJECT>")
string(REPLACE "<OBJECT>" "${output_dir_${libname}}/${output_file_${libname}}"
compile_command_${libname} ${compile_command_${libname}})
elseif(substitution STREQUAL "<SOURCE>")
string(REPLACE "<SOURCE>" "${sources_${libname}}"
compile_command_${libname} ${compile_command_${libname}})
elseif(substitution STREQUAL "<FLAGS>")
string(REPLACE "<FLAGS>" "${CMAKE_C_FLAGS} ${extra_cflags_${libname}}"
compile_command_${libname} ${compile_command_${libname}})
else()
string(REPLACE "${substitution}" "" compile_command_${libname}
${compile_command_${libname}})
endif()
endforeach()
separate_arguments(compile_command_${libname})
add_custom_command(
OUTPUT ${output_dir_${libname}}/${output_file_${libname}}
COMMAND ${compile_command_${libname}}
DEPENDS ${sources_${libname}}
COMMENT "Building C object ${output_file_${libname}}")
add_custom_target(${libname} DEPENDS ${output_dir_${libname}}/${output_file_${libname}})
set_target_properties(${libname} PROPERTIES FOLDER "Compiler-RT/Codegenning")
install(FILES ${output_dir_${libname}}/${output_file_${libname}}
DESTINATION ${install_dir_${libname}}
${COMPONENT_OPTION})
else()
add_library(${libname} ${type} ${sources_${libname}})
set_target_compile_flags(${libname} ${extra_cflags_${libname}})
set_target_link_flags(${libname} ${extra_link_flags_${libname}})
set_property(TARGET ${libname} APPEND PROPERTY
COMPILE_DEFINITIONS ${LIB_DEFS})
set_target_output_directories(${libname} ${output_dir_${libname}})
install(TARGETS ${libname}
ARCHIVE DESTINATION ${install_dir_${libname}}
${COMPONENT_OPTION}
LIBRARY DESTINATION ${install_dir_${libname}}
${COMPONENT_OPTION}
RUNTIME DESTINATION ${install_dir_${libname}}
${COMPONENT_OPTION})
endif()
if(LIB_DEPS)
add_dependencies(${libname} ${LIB_DEPS})
endif()
set_target_properties(${libname} PROPERTIES
OUTPUT_NAME ${output_name_${libname}}
FOLDER "Compiler-RT/Runtimes")
if(LIB_LINK_LIBS)
target_link_libraries(${libname} PRIVATE ${LIB_LINK_LIBS})
endif()
if(builtins_${libname})
target_link_libraries(${libname} PRIVATE ${builtins_${libname}})
endif()
if(${type} STREQUAL "SHARED")
if(APPLE OR WIN32)
set_property(TARGET ${libname} PROPERTY BUILD_WITH_INSTALL_RPATH ON)
endif()
if(WIN32 AND NOT CYGWIN AND NOT MINGW)
set_target_properties(${libname} PROPERTIES IMPORT_PREFIX "")
set_target_properties(${libname} PROPERTIES IMPORT_SUFFIX ".lib")
endif()
if (APPLE AND NOT CMAKE_LINKER MATCHES ".*lld.*")
# Apple's linker signs the resulting dylib with an ad-hoc code signature in
# most situations, except:
# 1. Versions of ld64 prior to ld64-609 in Xcode 12 predate this behavior.
# 2. Apple's new linker does not when building with `-darwin-target-variant`
# to support macOS Catalyst.
#
# Explicitly re-signing the dylib works around both of these issues. The
# signature is marked as `linker-signed` when that is supported so that it
# behaves as expected when processed by subsequent tooling.
#
# Detect whether `codesign` supports `-o linker-signed` by passing it as an
# argument and looking for `invalid argument "linker-signed"` in its output.
# FIXME: Remove this once all supported toolchains support `-o linker-signed`.
execute_process(
COMMAND sh -c "codesign -f -s - -o linker-signed this-does-not-exist 2>&1 | grep -q linker-signed"
RESULT_VARIABLE CODESIGN_SUPPORTS_LINKER_SIGNED
)
set(EXTRA_CODESIGN_ARGUMENTS)
if (CODESIGN_SUPPORTS_LINKER_SIGNED)
list(APPEND EXTRA_CODESIGN_ARGUMENTS -o linker-signed)
endif()
add_custom_command(TARGET ${libname}
POST_BUILD
COMMAND codesign --sign - ${EXTRA_CODESIGN_ARGUMENTS} $<TARGET_FILE:${libname}>
WORKING_DIRECTORY ${COMPILER_RT_OUTPUT_LIBRARY_DIR}
COMMAND_EXPAND_LISTS
)
endif()
endif()
set(parent_target_arg)
if(LIB_PARENT_TARGET)
set(parent_target_arg PARENT_TARGET ${LIB_PARENT_TARGET})
endif()
add_compiler_rt_install_targets(${libname} ${parent_target_arg})
if(APPLE)
set_target_properties(${libname} PROPERTIES
OSX_ARCHITECTURES "${LIB_ARCHS_${libname}}")
endif()
if(type STREQUAL "SHARED")
rt_externalize_debuginfo(${libname})
endif()
endforeach()
if(LIB_PARENT_TARGET)
add_dependencies(${LIB_PARENT_TARGET} ${libnames})
endif()
endfunction()
# Compile and register compiler-rt tests.
# generate_compiler_rt_tests(<output object files> <test_suite> <test_name>
# <test architecture>
# KIND <custom prefix>
# SUBDIR <subdirectory for testing binary>
# SOURCES <sources to compile>
# RUNTIME <tests runtime to link in>
# CFLAGS <compile-time flags>
# COMPILE_DEPS <compile-time dependencies>
# DEPS <dependencies>
# LINK_FLAGS <flags to use during linking>
# )
function(generate_compiler_rt_tests test_objects test_suite testname arch)
cmake_parse_arguments(TEST "" "KIND;RUNTIME;SUBDIR"
"SOURCES;COMPILE_DEPS;DEPS;CFLAGS;LINK_FLAGS" ${ARGN})
foreach(source ${TEST_SOURCES})
sanitizer_test_compile(
"${test_objects}" "${source}" "${arch}"
KIND ${TEST_KIND}
COMPILE_DEPS ${TEST_COMPILE_DEPS}
DEPS ${TEST_DEPS}
CFLAGS ${TEST_CFLAGS}
)
endforeach()
set(TEST_DEPS ${${test_objects}})
if(NOT "${TEST_RUNTIME}" STREQUAL "")
list(APPEND TEST_DEPS ${TEST_RUNTIME})
list(APPEND "${test_objects}" $<TARGET_FILE:${TEST_RUNTIME}>)
endif()
add_compiler_rt_test(${test_suite} "${testname}" "${arch}"
SUBDIR ${TEST_SUBDIR}
OBJECTS ${${test_objects}}
DEPS ${TEST_DEPS}
LINK_FLAGS ${TEST_LINK_FLAGS}
)
set("${test_objects}" "${${test_objects}}" PARENT_SCOPE)
endfunction()
# Link objects into a single executable with COMPILER_RT_TEST_COMPILER,
# using specified link flags. Make executable a part of provided
# test_suite.
# add_compiler_rt_test(<test_suite> <test_name> <arch>
# SUBDIR <subdirectory for binary>
# OBJECTS <object files>
# DEPS <deps (e.g. runtime libs)>
# LINK_FLAGS <link flags>)
function(add_compiler_rt_test test_suite test_name arch)
cmake_parse_arguments(TEST "" "SUBDIR" "OBJECTS;DEPS;LINK_FLAGS" "" ${ARGN})
set(output_dir ${CMAKE_CURRENT_BINARY_DIR})
if(TEST_SUBDIR)
set(output_dir "${output_dir}/${TEST_SUBDIR}")
endif()
set(output_dir "${output_dir}/${CMAKE_CFG_INTDIR}")
file(MAKE_DIRECTORY "${output_dir}")
set(output_bin "${output_dir}/${test_name}")
if(WIN32)
set(output_bin "${output_bin}.exe")
endif()
# Use host compiler in a standalone build, and just-built Clang otherwise.
if(NOT COMPILER_RT_STANDALONE_BUILD)
list(APPEND TEST_DEPS clang)
endif()
get_target_flags_for_arch(${arch} TARGET_LINK_FLAGS)
list(APPEND TEST_LINK_FLAGS ${TARGET_LINK_FLAGS})
# If we're not on MSVC, include the linker flags from CMAKE but override them
# with the provided link flags. This ensures that flags which are required to
# link programs at all are included, but the changes needed for the test
# trump. With MSVC we can't do that because CMake is set up to run link.exe
# when linking, not the compiler. Here, we hack it to use the compiler
# because we want to use -fsanitize flags.
# Only add CMAKE_EXE_LINKER_FLAGS when in a standalone bulid.
# Or else CMAKE_EXE_LINKER_FLAGS contains flags for build compiler of Clang/llvm.
# This might not be the same as what the COMPILER_RT_TEST_COMPILER supports.
# eg: the build compiler use lld linker and we build clang with default ld linker
# then to be tested clang will complain about lld options like --color-diagnostics.
if(NOT MSVC AND COMPILER_RT_STANDALONE_BUILD)
set(TEST_LINK_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${TEST_LINK_FLAGS}")
separate_arguments(TEST_LINK_FLAGS)
endif()
if(NOT COMPILER_RT_STANDALONE_BUILD AND COMPILER_RT_HAS_LLD AND "lld" IN_LIST LLVM_ENABLE_PROJECTS)
# CMAKE_EXE_LINKER_FLAGS may contain -fuse=lld
# FIXME: -DLLVM_ENABLE_LLD=ON and -DLLVM_ENABLE_PROJECTS without lld case.
list(APPEND TEST_DEPS lld)
endif()
add_custom_command(
OUTPUT "${output_bin}"
COMMAND ${COMPILER_RT_TEST_CXX_COMPILER} ${TEST_OBJECTS} -o "${output_bin}"
${TEST_LINK_FLAGS}
DEPENDS ${TEST_DEPS}
)
add_custom_target(T${test_name} DEPENDS "${output_bin}")
set_target_properties(T${test_name} PROPERTIES FOLDER "Compiler-RT/Tests")
# Make the test suite depend on the binary.
add_dependencies(${test_suite} T${test_name})
endfunction()
macro(add_compiler_rt_resource_file target_name file_name component)
set(src_file "${CMAKE_CURRENT_SOURCE_DIR}/${file_name}")
set(dst_file "${COMPILER_RT_OUTPUT_DIR}/share/${file_name}")
add_custom_command(OUTPUT ${dst_file}
DEPENDS ${src_file}
COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src_file} ${dst_file}
COMMENT "Copying ${file_name}...")
add_custom_target(${target_name} DEPENDS ${dst_file})
# Install in Clang resource directory.
install(FILES ${file_name}
DESTINATION ${COMPILER_RT_INSTALL_DATA_DIR}
COMPONENT ${component})
add_dependencies(${component} ${target_name})
set_target_properties(${target_name} PROPERTIES FOLDER "Compiler-RT/Resources")
endmacro()
macro(add_compiler_rt_script name)
set(dst ${COMPILER_RT_EXEC_OUTPUT_DIR}/${name})
set(src ${CMAKE_CURRENT_SOURCE_DIR}/${name})
add_custom_command(OUTPUT ${dst}
DEPENDS ${src}
COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src} ${dst}
COMMENT "Copying ${name}...")
add_custom_target(${name} DEPENDS ${dst})
install(FILES ${dst}
PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE
DESTINATION ${COMPILER_RT_INSTALL_BINARY_DIR})
endmacro(add_compiler_rt_script src name)
# Builds custom version of libc++ and installs it in <prefix>.
# Can be used to build sanitized versions of libc++ for running unit tests.
# add_custom_libcxx(<name> <prefix>
# DEPS <list of build deps>
# CFLAGS <list of compile flags>
# USE_TOOLCHAIN)
macro(add_custom_libcxx name prefix)
if(NOT COMPILER_RT_LIBCXX_PATH)
message(FATAL_ERROR "libcxx not found!")
endif()
if(NOT COMPILER_RT_LIBCXXABI_PATH)
message(FATAL_ERROR "libcxxabi not found!")
endif()
cmake_parse_arguments(LIBCXX "USE_TOOLCHAIN" "" "DEPS;CFLAGS;CMAKE_ARGS" ${ARGN})
if(LIBCXX_USE_TOOLCHAIN)
set(compiler_args -DCMAKE_C_COMPILER=${COMPILER_RT_TEST_COMPILER}
-DCMAKE_CXX_COMPILER=${COMPILER_RT_TEST_CXX_COMPILER})
if(NOT COMPILER_RT_STANDALONE_BUILD AND NOT LLVM_RUNTIMES_BUILD)
set(toolchain_deps $<TARGET_FILE:clang>)
set(force_deps DEPENDS $<TARGET_FILE:clang>)
endif()
else()
set(compiler_args -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER})
endif()
add_custom_target(${name}-clear
COMMAND ${CMAKE_COMMAND} -E remove_directory ${prefix}
COMMENT "Clobbering ${name} build directories"
USES_TERMINAL
)
set_target_properties(${name}-clear PROPERTIES FOLDER "Compiler-RT/Metatargets")
add_custom_command(
OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp
DEPENDS ${LIBCXX_DEPS} ${toolchain_deps}
COMMAND ${CMAKE_COMMAND} -E touch ${prefix}/CMakeCache.txt
COMMAND ${CMAKE_COMMAND} -E touch ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp
COMMENT "Clobbering bootstrap build directories"
)
add_custom_target(${name}-clobber
DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp)
set_target_properties(${name}-clobber PROPERTIES FOLDER "Compiler-RT/Metatargets")
set(PASSTHROUGH_VARIABLES
ANDROID
ANDROID_NATIVE_API_LEVEL
CMAKE_C_COMPILER_TARGET
CMAKE_CXX_COMPILER_TARGET
CMAKE_SHARED_LINKER_FLAGS
CMAKE_MODULE_LINKER_FLAGS
CMAKE_EXE_LINKER_FLAGS
CMAKE_INSTALL_PREFIX
CMAKE_MAKE_PROGRAM
CMAKE_LINKER
CMAKE_AR
CMAKE_RANLIB
CMAKE_NM
CMAKE_OBJCOPY
CMAKE_OBJDUMP
CMAKE_STRIP
CMAKE_READELF
CMAKE_SYSROOT
CMAKE_TOOLCHAIN_FILE
LIBCXX_HAS_MUSL_LIBC
LIBCXX_HAS_GCC_S_LIB
LIBCXX_HAS_PTHREAD_LIB
LIBCXX_HAS_RT_LIB
LIBCXX_USE_COMPILER_RT
LIBCXXABI_HAS_PTHREAD_LIB
PYTHON_EXECUTABLE
Python3_EXECUTABLE
Python2_EXECUTABLE
CMAKE_SYSTEM_NAME)
foreach(variable ${PASSTHROUGH_VARIABLES})
get_property(is_value_set CACHE ${variable} PROPERTY VALUE SET)
if(${is_value_set})
get_property(value CACHE ${variable} PROPERTY VALUE)
list(APPEND CMAKE_PASSTHROUGH_VARIABLES -D${variable}=${value})
endif()
endforeach()
string(REPLACE ";" " " LIBCXX_C_FLAGS "${LIBCXX_CFLAGS}")
get_property(C_FLAGS CACHE CMAKE_C_FLAGS PROPERTY VALUE)
set(LIBCXX_C_FLAGS "${LIBCXX_C_FLAGS} ${C_FLAGS}")
string(REPLACE ";" " " LIBCXX_CXX_FLAGS "${LIBCXX_CFLAGS}")
get_property(CXX_FLAGS CACHE CMAKE_CXX_FLAGS PROPERTY VALUE)
set(LIBCXX_CXX_FLAGS "${LIBCXX_CXX_FLAGS} ${CXX_FLAGS}")
if(CMAKE_VERBOSE_MAKEFILE)
set(verbose -DCMAKE_VERBOSE_MAKEFILE=ON)
endif()
ExternalProject_Add(${name}
DEPENDS ${name}-clobber ${LIBCXX_DEPS}
PREFIX ${CMAKE_CURRENT_BINARY_DIR}/${name}
SOURCE_DIR ${LLVM_MAIN_SRC_DIR}/../runtimes
BINARY_DIR ${prefix}
CMAKE_ARGS ${CMAKE_PASSTHROUGH_VARIABLES}
${compiler_args}
${verbose}
-DCMAKE_C_FLAGS=${LIBCXX_C_FLAGS}
-DCMAKE_CXX_FLAGS=${LIBCXX_CXX_FLAGS}
-DCMAKE_BUILD_TYPE=Release
-DCMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY
-DLLVM_PATH=${LLVM_MAIN_SRC_DIR}
-DLLVM_ENABLE_RUNTIMES=libcxx|libcxxabi
-DLIBCXXABI_USE_LLVM_UNWINDER=OFF
-DLIBCXXABI_ENABLE_SHARED=OFF
-DLIBCXXABI_HERMETIC_STATIC_LIBRARY=ON
-DLIBCXXABI_INCLUDE_TESTS=OFF
-DLIBCXX_CXX_ABI=libcxxabi
-DLIBCXX_ENABLE_SHARED=OFF
-DLIBCXX_HERMETIC_STATIC_LIBRARY=ON
-DLIBCXX_INCLUDE_BENCHMARKS=OFF
-DLIBCXX_INCLUDE_TESTS=OFF
-DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON
${LIBCXX_CMAKE_ARGS}
INSTALL_COMMAND ""
STEP_TARGETS configure build
BUILD_ALWAYS 1
USES_TERMINAL_CONFIGURE 1
USES_TERMINAL_BUILD 1
USES_TERMINAL_INSTALL 1
LIST_SEPARATOR |
EXCLUDE_FROM_ALL TRUE
BUILD_BYPRODUCTS "${prefix}/lib/libc++.a" "${prefix}/lib/libc++abi.a"
)
if (CMAKE_GENERATOR MATCHES "Make")
set(run_clean "$(MAKE)" "-C" "${prefix}" "clean")
else()
set(run_clean ${CMAKE_COMMAND} --build ${prefix} --target clean
--config "$<CONFIG>")
endif()
ExternalProject_Add_Step(${name} clean
COMMAND ${run_clean}
COMMENT "Cleaning ${name}..."
DEPENDEES configure
${force_deps}
WORKING_DIRECTORY ${prefix}
EXCLUDE_FROM_MAIN 1
USES_TERMINAL 1
)
ExternalProject_Add_StepTargets(${name} clean)
if(LIBCXX_USE_TOOLCHAIN)
add_dependencies(${name}-clean ${name}-clobber)
set_target_properties(${name}-clean PROPERTIES
SOURCES ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp)
endif()
endmacro()
function(rt_externalize_debuginfo name)
if(NOT COMPILER_RT_EXTERNALIZE_DEBUGINFO)
return()
endif()
if(NOT COMPILER_RT_EXTERNALIZE_DEBUGINFO_SKIP_STRIP)
set(strip_command COMMAND xcrun strip -Sl $<TARGET_FILE:${name}>)
endif()
if(APPLE)
if(CMAKE_CXX_FLAGS MATCHES "-flto"
OR CMAKE_CXX_FLAGS_${uppercase_CMAKE_BUILD_TYPE} MATCHES "-flto")
set(lto_object ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/${name}-lto.o)
set_property(TARGET ${name} APPEND_STRING PROPERTY
LINK_FLAGS " -Wl,-object_path_lto -Wl,${lto_object}")
endif()
add_custom_command(TARGET ${name} POST_BUILD
COMMAND xcrun dsymutil $<TARGET_FILE:${name}>
${strip_command})
else()
message(FATAL_ERROR "COMPILER_RT_EXTERNALIZE_DEBUGINFO isn't implemented for non-darwin platforms!")
endif()
endfunction()
# Configure lit configuration files, including compiler-rt specific variables.
function(configure_compiler_rt_lit_site_cfg input output)
set_llvm_build_mode()
get_compiler_rt_output_dir(${COMPILER_RT_DEFAULT_TARGET_ARCH} output_dir)
string(REPLACE ${CMAKE_CFG_INTDIR} ${LLVM_BUILD_MODE} COMPILER_RT_RESOLVED_TEST_COMPILER ${COMPILER_RT_TEST_COMPILER})
string(REPLACE ${CMAKE_CFG_INTDIR} ${LLVM_BUILD_MODE} COMPILER_RT_RESOLVED_OUTPUT_DIR ${COMPILER_RT_OUTPUT_DIR})
string(REPLACE ${CMAKE_CFG_INTDIR} ${LLVM_BUILD_MODE} COMPILER_RT_RESOLVED_LIBRARY_OUTPUT_DIR ${output_dir})
configure_lit_site_cfg(${input} ${output})
endfunction()
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