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llvm / llvm-project / 9337594e3346e15b5bc90b5372b8b482aa5af37f / . / compiler-rt / cmake / Modules / CompilerRTUtils.cmake
blob: 03db38fa4cdc11e731c5cfc89bf9a817a42fbf5c [file] [log] [blame]
include(CMakePushCheckState)
include(CheckSymbolExists)
# Because compiler-rt spends a lot of time setting up custom compile flags,
# define a handy helper function for it. The compile flags setting in CMake
# has serious issues that make its syntax challenging at best.
function(set_target_compile_flags target)
set_property(TARGET ${target} PROPERTY COMPILE_OPTIONS ${ARGN})
endfunction()
function(set_target_link_flags target)
set_property(TARGET ${target} PROPERTY LINK_OPTIONS ${ARGN})
endfunction()
# Set the variable var_PYBOOL to True if var holds a true-ish string,
# otherwise set it to False.
macro(pythonize_bool var)
if (${var})
set(${var}_PYBOOL True)
else()
set(${var}_PYBOOL False)
endif()
endmacro()
# Appends value to all lists in ARGN, if the condition is true.
macro(append_list_if condition value)
if(${condition})
foreach(list ${ARGN})
list(APPEND ${list} ${value})
endforeach()
endif()
endmacro()
# Appends value to all strings in ARGN, if the condition is true.
macro(append_string_if condition value)
if(${condition})
foreach(str ${ARGN})
set(${str} "${${str}} ${value}")
endforeach()
endif()
endmacro()
macro(append_rtti_flag polarity list)
if(${polarity})
append_list_if(COMPILER_RT_HAS_FRTTI_FLAG -frtti ${list})
append_list_if(COMPILER_RT_HAS_GR_FLAG /GR ${list})
else()
append_list_if(COMPILER_RT_HAS_FNO_RTTI_FLAG -fno-rtti ${list})
append_list_if(COMPILER_RT_HAS_GR_FLAG /GR- ${list})
endif()
endmacro()
macro(list_intersect output input1 input2)
set(${output})
foreach(it ${${input1}})
list(FIND ${input2} ${it} index)
if( NOT (index EQUAL -1))
list(APPEND ${output} ${it})
endif()
endforeach()
endmacro()
function(list_replace input_list old new)
set(replaced_list)
foreach(item ${${input_list}})
if(${item} STREQUAL ${old})
list(APPEND replaced_list ${new})
else()
list(APPEND replaced_list ${item})
endif()
endforeach()
set(${input_list} "${replaced_list}" PARENT_SCOPE)
endfunction()
# Takes ${ARGN} and puts only supported architectures in @out_var list.
function(filter_available_targets out_var)
set(archs ${${out_var}})
foreach(arch ${ARGN})
list(FIND COMPILER_RT_SUPPORTED_ARCH ${arch} ARCH_INDEX)
if(NOT (ARCH_INDEX EQUAL -1) AND CAN_TARGET_${arch})
list(APPEND archs ${arch})
endif()
endforeach()
set(${out_var} ${archs} PARENT_SCOPE)
endfunction()
# Add $arch as supported with no additional flags.
macro(add_default_target_arch arch)
set(TARGET_${arch}_CFLAGS "")
set(CAN_TARGET_${arch} 1)
list(APPEND COMPILER_RT_SUPPORTED_ARCH ${arch})
endmacro()
function(check_compile_definition def argstring out_var)
if("${def}" STREQUAL "")
set(${out_var} TRUE PARENT_SCOPE)
return()
endif()
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${argstring}")
check_symbol_exists(${def} "" ${out_var})
cmake_pop_check_state()
endfunction()
# test_target_arch(<arch> <def> <target flags...>)
# Checks if architecture is supported: runs host compiler with provided
# flags to verify that:
# 1) <def> is defined (if non-empty)
# 2) simple file can be successfully built.
# If successful, saves target flags for this architecture.
macro(test_target_arch arch def)
set(TARGET_${arch}_CFLAGS ${ARGN})
set(TARGET_${arch}_LINK_FLAGS ${ARGN})
set(argstring "")
foreach(arg ${ARGN})
set(argstring "${argstring} ${arg}")
endforeach()
check_compile_definition("${def}" "${argstring}" HAS_${arch}_DEF)
if(NOT DEFINED CAN_TARGET_${arch})
if(NOT HAS_${arch}_DEF)
set(CAN_TARGET_${arch} FALSE)
elseif(TEST_COMPILE_ONLY)
try_compile_only(CAN_TARGET_${arch}
SOURCE "#include <limits.h>\nint foo(int x, int y) { return x + y; }\n"
FLAGS ${TARGET_${arch}_CFLAGS})
else()
set(FLAG_NO_EXCEPTIONS "")
if(COMPILER_RT_HAS_FNO_EXCEPTIONS_FLAG)
set(FLAG_NO_EXCEPTIONS " -fno-exceptions ")
endif()
set(SAVED_CMAKE_EXE_LINKER_FLAGS ${CMAKE_EXE_LINKER_FLAGS})
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${argstring}")
try_compile(CAN_TARGET_${arch} ${CMAKE_BINARY_DIR} ${SIMPLE_SOURCE}
COMPILE_DEFINITIONS "${TARGET_${arch}_CFLAGS} ${FLAG_NO_EXCEPTIONS}"
OUTPUT_VARIABLE TARGET_${arch}_OUTPUT)
set(CMAKE_EXE_LINKER_FLAGS ${SAVED_CMAKE_EXE_LINKER_FLAGS})
endif()
endif()
if(${CAN_TARGET_${arch}})
list(APPEND COMPILER_RT_SUPPORTED_ARCH ${arch})
elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" STREQUAL "${arch}" AND
COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE)
# Bail out if we cannot target the architecture we plan to test.
message(FATAL_ERROR "Cannot compile for ${arch}:\n${TARGET_${arch}_OUTPUT}")
endif()
endmacro()
macro(detect_target_arch)
check_symbol_exists(__AMDGPU__ "" __AMDGPU)
check_symbol_exists(__arm__ "" __ARM)
check_symbol_exists(__AVR__ "" __AVR)
check_symbol_exists(__aarch64__ "" __AARCH64)
check_symbol_exists(__x86_64__ "" __X86_64)
check_symbol_exists(__i386__ "" __I386)
check_symbol_exists(__hexagon__ "" __HEXAGON)
check_symbol_exists(__loongarch__ "" __LOONGARCH)
check_symbol_exists(__mips__ "" __MIPS)
check_symbol_exists(__mips64__ "" __MIPS64)
check_symbol_exists(__NVPTX__ "" __NVPTX)
check_symbol_exists(__powerpc__ "" __PPC)
check_symbol_exists(__powerpc64__ "" __PPC64)
check_symbol_exists(__powerpc64le__ "" __PPC64LE)
check_symbol_exists(__riscv "" __RISCV)
check_symbol_exists(__s390x__ "" __S390X)
check_symbol_exists(__sparc "" __SPARC)
check_symbol_exists(__sparcv9 "" __SPARCV9)
check_symbol_exists(__wasm32__ "" __WEBASSEMBLY32)
check_symbol_exists(__wasm64__ "" __WEBASSEMBLY64)
check_symbol_exists(__ve__ "" __VE)
if(__AMDGPU)
add_default_target_arch(amdgcn)
elseif(__ARM)
add_default_target_arch(arm)
elseif(__AVR)
add_default_target_arch(avr)
elseif(__AARCH64)
add_default_target_arch(aarch64)
elseif(__X86_64)
if(CMAKE_SIZEOF_VOID_P EQUAL "4")
add_default_target_arch(x32)
elseif(CMAKE_SIZEOF_VOID_P EQUAL "8")
add_default_target_arch(x86_64)
else()
message(FATAL_ERROR "Unsupported pointer size for X86_64")
endif()
elseif(__HEXAGON)
add_default_target_arch(hexagon)
elseif(__I386)
add_default_target_arch(i386)
elseif(__LOONGARCH)
if(CMAKE_SIZEOF_VOID_P EQUAL "4")
add_default_target_arch(loongarch32)
elseif(CMAKE_SIZEOF_VOID_P EQUAL "8")
add_default_target_arch(loongarch64)
else()
message(FATAL_ERROR "Unsupported pointer size for LoongArch")
endif()
elseif(__MIPS64) # must be checked before __MIPS
add_default_target_arch(mips64)
elseif(__MIPS)
add_default_target_arch(mips)
elseif(__NVPTX)
add_default_target_arch(nvptx64)
elseif(__PPC64) # must be checked before __PPC
add_default_target_arch(powerpc64)
elseif(__PPC64LE)
add_default_target_arch(powerpc64le)
elseif(__PPC)
add_default_target_arch(powerpc)
elseif(__RISCV)
if(CMAKE_SIZEOF_VOID_P EQUAL "4")
add_default_target_arch(riscv32)
elseif(CMAKE_SIZEOF_VOID_P EQUAL "8")
add_default_target_arch(riscv64)
else()
message(FATAL_ERROR "Unsupported XLEN for RISC-V")
endif()
elseif(__S390X)
add_default_target_arch(s390x)
elseif(__SPARCV9)
add_default_target_arch(sparcv9)
elseif(__SPARC)
add_default_target_arch(sparc)
elseif(__WEBASSEMBLY32)
add_default_target_arch(wasm32)
elseif(__WEBASSEMBLY64)
add_default_target_arch(wasm64)
elseif(__VE)
add_default_target_arch(ve)
endif()
endmacro()
function(get_compiler_rt_root_source_dir ROOT_DIR_VAR)
# Compute the path to the root of the Compiler-RT source tree
# regardless of how the project was configured.
#
# This function is useful because using `${CMAKE_SOURCE_DIR}`
# is error prone due to the numerous ways Compiler-RT can be
# configured.
#
# `ROOT_DIR_VAR` - the name of the variable to write the result to.
#
# TODO(dliew): When CMake min version is 3.17 or newer use
# `CMAKE_CURRENT_FUNCTION_LIST_DIR` instead.
if ("${ROOT_DIR_VAR}" STREQUAL "")
message(FATAL_ERROR "ROOT_DIR_VAR cannot be empty")
endif()
# Compiler-rt supports different source root paths.
# Handle each case here.
set(PATH_TO_COMPILER_RT_SOURCE_ROOT "")
if (DEFINED CompilerRTBuiltins_SOURCE_DIR)
# Compiler-RT Builtins standalone build.
# `llvm-project/compiler-rt/lib/builtins`
set(PATH_TO_COMPILER_RT_SOURCE_ROOT "${CompilerRTBuiltins_SOURCE_DIR}/../../")
elseif (DEFINED CompilerRTCRT_SOURCE_DIR)
# Compiler-RT CRT standalone build.
# `llvm-project/compiler-rt/lib/crt`
set(PATH_TO_COMPILER_RT_SOURCE_ROOT "${CompilerRTCRT_SOURCE_DIR}/../../")
elseif(DEFINED CompilerRT_SOURCE_DIR)
# Compiler-RT standalone build.
# `llvm-project/compiler-rt`
set(PATH_TO_COMPILER_RT_SOURCE_ROOT "${CompilerRT_SOURCE_DIR}")
elseif (EXISTS "${CMAKE_SOURCE_DIR}/../compiler-rt")
# In tree build with LLVM as the root project.
# See `llvm-project/projects/`.
# Assumes monorepo layout.
set(PATH_TO_COMPILER_RT_SOURCE_ROOT "${CMAKE_SOURCE_DIR}/../compiler-rt")
else()
message(FATAL_ERROR "Unhandled Compiler-RT source root configuration.")
endif()
get_filename_component(ROOT_DIR "${PATH_TO_COMPILER_RT_SOURCE_ROOT}" ABSOLUTE)
if (NOT EXISTS "${ROOT_DIR}")
message(FATAL_ERROR "Path \"${ROOT_DIR}\" doesn't exist")
endif()
# Sanity check: Make sure we can locate the current source file via the
# computed path.
set(PATH_TO_CURRENT_FILE "${ROOT_DIR}/cmake/Modules/CompilerRTUtils.cmake")
if (NOT EXISTS "${PATH_TO_CURRENT_FILE}")
message(FATAL_ERROR "Could not find \"${PATH_TO_CURRENT_FILE}\"")
endif()
set("${ROOT_DIR_VAR}" "${ROOT_DIR}" PARENT_SCOPE)
endfunction()
macro(load_llvm_config)
if (LLVM_CONFIG_PATH AND NOT LLVM_CMAKE_DIR)
message(WARNING
"LLVM_CONFIG_PATH is deprecated, please use LLVM_CMAKE_DIR instead")
# Compute the path to the LLVM install prefix and pass it as LLVM_CMAKE_DIR,
# CMake will locate the appropriate lib*/cmake subdirectory from there.
# For example. for -DLLVM_CONFIG_PATH=/usr/lib/llvm/16/bin/llvm-config
# this will yield LLVM_CMAKE_DIR=/usr/lib/llvm/16.
get_filename_component(LLVM_CMAKE_DIR "${LLVM_CONFIG_PATH}" DIRECTORY)
get_filename_component(LLVM_CMAKE_DIR "${LLVM_CMAKE_DIR}" DIRECTORY)
endif()
# Compute path to LLVM sources assuming the monorepo layout.
# We don't set `LLVM_MAIN_SRC_DIR` directly to avoid overriding a user provided
# CMake cache value.
get_compiler_rt_root_source_dir(COMPILER_RT_ROOT_SRC_PATH)
get_filename_component(LLVM_MAIN_SRC_DIR_DEFAULT "${COMPILER_RT_ROOT_SRC_PATH}/../llvm" ABSOLUTE)
if (NOT EXISTS "${LLVM_MAIN_SRC_DIR_DEFAULT}")
# TODO(dliew): Remove this legacy fallback path.
message(WARNING
"LLVM source tree not found at \"${LLVM_MAIN_SRC_DIR_DEFAULT}\". "
"You are not using the monorepo layout. This configuration is DEPRECATED.")
endif()
find_package(LLVM HINTS "${LLVM_CMAKE_DIR}")
if (NOT LLVM_FOUND)
message(WARNING "UNSUPPORTED COMPILER-RT CONFIGURATION DETECTED: "
"LLVM cmake package not found.\n"
"Reconfigure with -DLLVM_CMAKE_DIR=/path/to/llvm.")
else()
list(APPEND CMAKE_MODULE_PATH "${LLVM_DIR}")
# Turn into CACHE PATHs for overwritting
set(LLVM_BINARY_DIR "${LLVM_BINARY_DIR}" CACHE PATH "Path to LLVM build tree")
set(LLVM_LIBRARY_DIR "${LLVM_LIBRARY_DIR}" CACHE PATH "Path to llvm/lib")
set(LLVM_TOOLS_BINARY_DIR "${LLVM_TOOLS_BINARY_DIR}" CACHE PATH "Path to llvm/bin")
set(LLVM_INCLUDE_DIR ${LLVM_INCLUDE_DIRS} CACHE PATH "Path to llvm/include and any other header dirs needed")
list(FIND LLVM_AVAILABLE_LIBS LLVMXRay XRAY_INDEX)
set(COMPILER_RT_HAS_LLVMXRAY TRUE)
if (XRAY_INDEX EQUAL -1)
message(WARNING "LLVMXRay not found in LLVM_AVAILABLE_LIBS")
set(COMPILER_RT_HAS_LLVMXRAY FALSE)
endif()
list(FIND LLVM_AVAILABLE_LIBS LLVMTestingSupport TESTINGSUPPORT_INDEX)
set(COMPILER_RT_HAS_LLVMTESTINGSUPPORT TRUE)
if (TESTINGSUPPORT_INDEX EQUAL -1)
message(WARNING "LLVMTestingSupport not found in LLVM_AVAILABLE_LIBS")
set(COMPILER_RT_HAS_LLVMTESTINGSUPPORT FALSE)
endif()
endif()
set(LLVM_LIBRARY_OUTPUT_INTDIR
${LLVM_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX})
set(LLVM_MAIN_SRC_DIR "${LLVM_MAIN_SRC_DIR_DEFAULT}" CACHE PATH "Path to LLVM source tree")
message(STATUS "LLVM_MAIN_SRC_DIR: \"${LLVM_MAIN_SRC_DIR}\"")
if (NOT EXISTS "${LLVM_MAIN_SRC_DIR}")
# TODO(dliew): Make this a hard error
message(WARNING "LLVM_MAIN_SRC_DIR (${LLVM_MAIN_SRC_DIR}) does not exist. "
"You can override the inferred path by adding "
"`-DLLVM_MAIN_SRC_DIR=<path_to_llvm_src>` to your CMake invocation "
"where `<path_to_llvm_src>` is the path to the `llvm` directory in "
"the `llvm-project` repo. "
"This will be treated as error in the future.")
endif()
if (NOT LLVM_FOUND)
# This configuration tries to configure without the prescence of `LLVMConfig.cmake`. It is
# intended for testing purposes (generating the lit test suites) and will likely not support
# a build of the runtimes in compiler-rt.
include(CompilerRTMockLLVMCMakeConfig)
compiler_rt_mock_llvm_cmake_config()
endif()
endmacro()
macro(construct_compiler_rt_default_triple)
if(COMPILER_RT_DEFAULT_TARGET_ONLY)
if(DEFINED COMPILER_RT_DEFAULT_TARGET_TRIPLE)
message(FATAL_ERROR "COMPILER_RT_DEFAULT_TARGET_TRIPLE isn't supported when building for default target only")
endif()
if ("${CMAKE_C_COMPILER_TARGET}" STREQUAL "")
message(FATAL_ERROR "CMAKE_C_COMPILER_TARGET must also be set when COMPILER_RT_DEFAULT_TARGET_ONLY is ON")
endif()
message(STATUS "cmake c compiler target: ${CMAKE_C_COMPILER_TARGET}")
set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${CMAKE_C_COMPILER_TARGET})
else()
set(target_triple ${LLVM_TARGET_TRIPLE})
# AIX triples can have OS version numbers we don't want for the compiler-rt target.
if (target_triple MATCHES "aix")
string(REGEX REPLACE "[0-9.]+$" "" target_triple "${target_triple}")
endif()
set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${target_triple} CACHE STRING
"Default triple for which compiler-rt runtimes will be built.")
endif()
if(CMAKE_C_COMPILER_ID MATCHES "Clang")
set(option_prefix "")
if (CMAKE_C_SIMULATE_ID MATCHES "MSVC")
set(option_prefix "/clang:")
endif()
set(print_target_triple ${CMAKE_C_COMPILER} ${option_prefix}--target=${COMPILER_RT_DEFAULT_TARGET_TRIPLE} ${option_prefix}-print-target-triple)
execute_process(COMMAND ${print_target_triple}
RESULT_VARIABLE result
OUTPUT_VARIABLE output
OUTPUT_STRIP_TRAILING_WHITESPACE)
if(result EQUAL 0)
set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${output})
else()
string(REPLACE ";" " " print_target_triple "${print_target_triple}")
# TODO(#97876): Report an error.
message(WARNING "Failed to execute `${print_target_triple}` to normalize target triple.")
endif()
endif()
string(REPLACE "-" ";" LLVM_TARGET_TRIPLE_LIST ${COMPILER_RT_DEFAULT_TARGET_TRIPLE})
list(GET LLVM_TARGET_TRIPLE_LIST 0 COMPILER_RT_DEFAULT_TARGET_ARCH)
# Map various forms of the architecture names to the canonical forms
# (as they are used by clang, see getArchNameForCompilerRTLib).
if("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "^i.86$")
# Android uses i686, but that's remapped at a later stage.
set(COMPILER_RT_DEFAULT_TARGET_ARCH "i386")
endif()
# If we are directly targeting a GPU we need to check that the compiler is
# compatible and pass some default arguments.
if(COMPILER_RT_DEFAULT_TARGET_ONLY)
# Pass the necessary flags to make flag detection work.
if("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "amdgcn")
set(COMPILER_RT_GPU_BUILD ON)
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -nogpulib")
elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "nvptx")
set(COMPILER_RT_GPU_BUILD ON)
set(CMAKE_REQUIRED_FLAGS
"${CMAKE_REQUIRED_FLAGS} -flto -c -Wno-unused-command-line-argument")
endif()
endif()
# Determine if test target triple is specified explicitly, and doesn't match the
# default.
if(NOT COMPILER_RT_DEFAULT_TARGET_TRIPLE STREQUAL LLVM_TARGET_TRIPLE)
set(COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE TRUE)
else()
set(COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE FALSE)
endif()
endmacro()
# Filter out generic versions of routines that are re-implemented in an
# architecture specific manner. This prevents multiple definitions of the same
# symbols, making the symbol selection non-deterministic.
#
# We follow the convention that a source file that exists in a sub-directory
# (e.g. `ppc/divtc3.c`) is architecture-specific and that if a generic
# implementation exists it will be a top-level source file with the same name
# modulo the file extension (e.g. `divtc3.c`).
function(filter_builtin_sources inout_var name)
set(intermediate ${${inout_var}})
foreach(_file ${intermediate})
get_filename_component(_file_dir ${_file} DIRECTORY)
if (NOT "${_file_dir}" STREQUAL "")
# Architecture specific file. If a generic version exists, print a notice
# and ensure that it is removed from the file list.
get_filename_component(_name ${_file} NAME)
string(REGEX REPLACE "\\.S$" ".c" _cname "${_name}")
if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${_cname}")
message(STATUS "For ${name} builtins preferring ${_file} to ${_cname}")
list(REMOVE_ITEM intermediate ${_cname})
endif()
endif()
endforeach()
set(${inout_var} ${intermediate} PARENT_SCOPE)
endfunction()
function(get_compiler_rt_target arch variable)
string(FIND ${COMPILER_RT_DEFAULT_TARGET_TRIPLE} "-" dash_index)
string(SUBSTRING ${COMPILER_RT_DEFAULT_TARGET_TRIPLE} ${dash_index} -1 triple_suffix)
string(SUBSTRING ${COMPILER_RT_DEFAULT_TARGET_TRIPLE} 0 ${dash_index} triple_cpu)
if(COMPILER_RT_DEFAULT_TARGET_ONLY)
# Use exact spelling when building only for the target specified to CMake.
set(target "${COMPILER_RT_DEFAULT_TARGET_TRIPLE}")
elseif(ANDROID AND ${arch} STREQUAL "i386")
set(target "i686${triple_suffix}")
elseif(${arch} STREQUAL "amd64")
set(target "x86_64${triple_suffix}")
elseif(${arch} STREQUAL "sparc64")
set(target "sparcv9${triple_suffix}")
elseif("${arch}" MATCHES "mips64|mips64el")
string(REGEX REPLACE "-gnu.*" "-gnuabi64" triple_suffix_gnu "${triple_suffix}")
string(REGEX REPLACE "mipsisa32" "mipsisa64" triple_cpu_mips "${triple_cpu}")
string(REGEX REPLACE "^mips$" "mips64" triple_cpu_mips "${triple_cpu_mips}")
string(REGEX REPLACE "^mipsel$" "mips64el" triple_cpu_mips "${triple_cpu_mips}")
set(target "${triple_cpu_mips}${triple_suffix_gnu}")
elseif("${arch}" MATCHES "mips|mipsel")
string(REGEX REPLACE "-gnuabi.*" "-gnu" triple_suffix_gnu "${triple_suffix}")
string(REGEX REPLACE "mipsisa64" "mipsisa32" triple_cpu_mips "${triple_cpu}")
string(REGEX REPLACE "mips64" "mips" triple_cpu_mips "${triple_cpu_mips}")
set(target "${triple_cpu_mips}${triple_suffix_gnu}")
elseif("${arch}" MATCHES "^arm")
# Arch is arm, armhf, armv6m (anything else would come from using
# COMPILER_RT_DEFAULT_TARGET_ONLY, which is checked above).
if (${arch} STREQUAL "armhf")
# If we are building for hard float but our ABI is soft float.
if ("${triple_suffix}" MATCHES ".*eabi$")
# Change "eabi" -> "eabihf"
set(triple_suffix "${triple_suffix}hf")
endif()
# ABI is already set in the triple, don't repeat it in the architecture.
set(arch "arm")
else ()
# If we are building for soft float, but the triple's ABI is hard float.
if ("${triple_suffix}" MATCHES ".*eabihf$")
# Change "eabihf" -> "eabi"
string(REGEX REPLACE "hf$" "" triple_suffix "${triple_suffix}")
endif()
endif()
set(target "${arch}${triple_suffix}")
elseif("${arch}" MATCHES "^amdgcn")
set(target "amdgcn-amd-amdhsa")
elseif("${arch}" MATCHES "^nvptx")
set(target "nvptx64-nvidia-cuda")
else()
set(target "${arch}${triple_suffix}")
endif()
set(${variable} ${target} PARENT_SCOPE)
endfunction()
function(get_compiler_rt_install_dir arch install_dir)
if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
get_compiler_rt_target(${arch} target)
set(${install_dir} ${COMPILER_RT_INSTALL_LIBRARY_DIR}/${target} PARENT_SCOPE)
else()
set(${install_dir} ${COMPILER_RT_INSTALL_LIBRARY_DIR} PARENT_SCOPE)
endif()
endfunction()
function(get_compiler_rt_output_dir arch output_dir)
if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
get_compiler_rt_target(${arch} target)
set(${output_dir} ${COMPILER_RT_OUTPUT_LIBRARY_DIR}/${target} PARENT_SCOPE)
else()
set(${output_dir} ${COMPILER_RT_OUTPUT_LIBRARY_DIR} PARENT_SCOPE)
endif()
endfunction()
# compiler_rt_process_sources(
# <OUTPUT_VAR>
# <SOURCE_FILE> ...
# [ADDITIONAL_HEADERS <header> ...]
# )
#
# Process the provided sources and write the list of new sources
# into `<OUTPUT_VAR>`.
#
# ADDITIONAL_HEADERS - Adds the supplied header to list of sources for IDEs.
#
# This function is very similar to `llvm_process_sources()` but exists here
# because we need to support standalone builds of compiler-rt.
function(compiler_rt_process_sources OUTPUT_VAR)
cmake_parse_arguments(
ARG
""
""
"ADDITIONAL_HEADERS"
${ARGN}
)
set(sources ${ARG_UNPARSED_ARGUMENTS})
set(headers "")
if (XCODE OR MSVC_IDE OR CMAKE_EXTRA_GENERATOR)
# For IDEs we need to tell CMake about header files.
# Otherwise they won't show up in UI.
set(headers ${ARG_ADDITIONAL_HEADERS})
list(LENGTH headers headers_length)
if (${headers_length} GREATER 0)
set_source_files_properties(${headers}
PROPERTIES HEADER_FILE_ONLY ON)
endif()
endif()
set("${OUTPUT_VAR}" ${sources} ${headers} PARENT_SCOPE)
endfunction()
# Create install targets for a library and its parent component (if specified).
function(add_compiler_rt_install_targets name)
cmake_parse_arguments(ARG "" "PARENT_TARGET" "" ${ARGN})
if(ARG_PARENT_TARGET AND NOT TARGET install-${ARG_PARENT_TARGET})
# The parent install target specifies the parent component to scrape up
# anything not installed by the individual install targets, and to handle
# installation when running the multi-configuration generators.
add_custom_target(install-${ARG_PARENT_TARGET}
DEPENDS ${ARG_PARENT_TARGET}
COMMAND "${CMAKE_COMMAND}"
-DCMAKE_INSTALL_COMPONENT=${ARG_PARENT_TARGET}
-P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
add_custom_target(install-${ARG_PARENT_TARGET}-stripped
DEPENDS ${ARG_PARENT_TARGET}
COMMAND "${CMAKE_COMMAND}"
-DCMAKE_INSTALL_COMPONENT=${ARG_PARENT_TARGET}
-DCMAKE_INSTALL_DO_STRIP=1
-P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
set_target_properties(install-${ARG_PARENT_TARGET} PROPERTIES
FOLDER "Compiler-RT/Installation")
set_target_properties(install-${ARG_PARENT_TARGET}-stripped PROPERTIES
FOLDER "Compiler-RT/Installation")
add_dependencies(install-compiler-rt install-${ARG_PARENT_TARGET})
add_dependencies(install-compiler-rt-stripped install-${ARG_PARENT_TARGET}-stripped)
endif()
# We only want to generate per-library install targets if you aren't using
# an IDE because the extra targets get cluttered in IDEs.
if(NOT CMAKE_CONFIGURATION_TYPES)
add_custom_target(install-${name}
DEPENDS ${name}
COMMAND "${CMAKE_COMMAND}"
-DCMAKE_INSTALL_COMPONENT=${name}
-P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
add_custom_target(install-${name}-stripped
DEPENDS ${name}
COMMAND "${CMAKE_COMMAND}"
-DCMAKE_INSTALL_COMPONENT=${name}
-DCMAKE_INSTALL_DO_STRIP=1
-P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
# If you have a parent target specified, we bind the new install target
# to the parent install target.
if(LIB_PARENT_TARGET)
add_dependencies(install-${LIB_PARENT_TARGET} install-${name})
add_dependencies(install-${LIB_PARENT_TARGET}-stripped install-${name}-stripped)
endif()
endif()
endfunction()
# Add warnings to catch potential errors that can lead to security
# vulnerabilities.
function(add_security_warnings out_flags macosx_sdk_version)
set(flags "${${out_flags}}")
append_list_if(COMPILER_RT_HAS_ARRAY_BOUNDS_FLAG -Werror=array-bounds flags)
append_list_if(COMPILER_RT_HAS_UNINITIALIZED_FLAG -Werror=uninitialized flags)
append_list_if(COMPILER_RT_HAS_SHADOW_FLAG -Werror=shadow flags)
append_list_if(COMPILER_RT_HAS_EMPTY_BODY_FLAG -Werror=empty-body flags)
append_list_if(COMPILER_RT_HAS_SIZEOF_POINTER_MEMACCESS_FLAG -Werror=sizeof-pointer-memaccess flags)
append_list_if(COMPILER_RT_HAS_SIZEOF_ARRAY_ARGUMENT_FLAG -Werror=sizeof-array-argument flags)
append_list_if(COMPILER_RT_HAS_SUSPICIOUS_MEMACCESS_FLAG -Werror=suspicious-memaccess flags)
append_list_if(COMPILER_RT_HAS_BUILTIN_MEMCPY_CHK_SIZE_FLAG -Werror=builtin-memcpy-chk-size flags)
append_list_if(COMPILER_RT_HAS_ARRAY_BOUNDS_POINTER_ARITHMETIC_FLAG -Werror=array-bounds-pointer-arithmetic flags)
append_list_if(COMPILER_RT_HAS_RETURN_STACK_ADDRESS_FLAG -Werror=return-stack-address flags)
append_list_if(COMPILER_RT_HAS_SIZEOF_ARRAY_DECAY_FLAG -Werror=sizeof-array-decay flags)
append_list_if(COMPILER_RT_HAS_FORMAT_INSUFFICIENT_ARGS_FLAG -Werror=format-insufficient-args flags)
# GCC complains if we pass -Werror=format-security without -Wformat
append_list_if(COMPILER_RT_HAS_BUILTIN_FORMAL_SECURITY_FLAG -Wformat -Werror=format-security flags)
append_list_if(COMPILER_RT_HAS_SIZEOF_ARRAY_DIV_FLAG -Werror=sizeof-array-div)
append_list_if(COMPILER_RT_HAS_SIZEOF_POINTER_DIV_FLAG -Werror=sizeof-pointer-div)
# Add -Wformat-nonliteral only if we can avoid adding the definition of
# eprintf. On Apple platforms, eprintf is needed only on macosx and only if
# its version is older than 10.7.
if ("${macosx_sdk_version}" VERSION_GREATER_EQUAL 10.7)
list(APPEND flags -Werror=format-nonliteral -DDONT_DEFINE_EPRINTF)
endif()
set(${out_flags} "${flags}" PARENT_SCOPE)
endfunction()