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llvm-project/compiler-rt/cmake/Modules/CompilerRTUtils.cmake

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CMake
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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(argstring "")
foreach(arg ${ARGN})
set(argstring "${argstring} ${arg}")
endforeach()
set_property(TARGET ${target} PROPERTY COMPILE_FLAGS "${argstring}")
endfunction()
function(set_target_link_flags target)
set(argstring "")
foreach(arg ${ARGN})
set(argstring "${argstring} ${arg}")
endforeach()
set_property(TARGET ${target} PROPERTY LINK_FLAGS "${argstring}")
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} 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(__arm__ "" __ARM)
check_symbol_exists(__aarch64__ "" __AARCH64)
check_symbol_exists(__x86_64__ "" __X86_64)
check_symbol_exists(__i386__ "" __I386)
check_symbol_exists(__mips__ "" __MIPS)
check_symbol_exists(__mips64__ "" __MIPS64)
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(__ARM)
add_default_target_arch(arm)
elseif(__AARCH64)
add_default_target_arch(aarch64)
elseif(__X86_64)
add_default_target_arch(x86_64)
elseif(__I386)
add_default_target_arch(i386)
elseif(__MIPS64) # must be checked before __MIPS
add_default_target_arch(mips64)
elseif(__MIPS)
add_default_target_arch(mips)
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 "Unsupport 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()
macro(load_llvm_config)
if (NOT LLVM_CONFIG_PATH)
find_program(LLVM_CONFIG_PATH "llvm-config"
DOC "Path to llvm-config binary")
if (NOT LLVM_CONFIG_PATH)
message(WARNING "UNSUPPORTED COMPILER-RT CONFIGURATION DETECTED: "
"llvm-config not found.\n"
"Reconfigure with -DLLVM_CONFIG_PATH=path/to/llvm-config.")
endif()
endif()
if (LLVM_CONFIG_PATH)
execute_process(
COMMAND ${LLVM_CONFIG_PATH} "--obj-root" "--bindir" "--libdir" "--src-root" "--includedir"
RESULT_VARIABLE HAD_ERROR
OUTPUT_VARIABLE CONFIG_OUTPUT)
if (HAD_ERROR)
message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}")
endif()
string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" CONFIG_OUTPUT ${CONFIG_OUTPUT})
list(GET CONFIG_OUTPUT 0 BINARY_DIR)
list(GET CONFIG_OUTPUT 1 TOOLS_BINARY_DIR)
list(GET CONFIG_OUTPUT 2 LIBRARY_DIR)
list(GET CONFIG_OUTPUT 3 MAIN_SRC_DIR)
list(GET CONFIG_OUTPUT 4 INCLUDE_DIR)
set(LLVM_BINARY_DIR ${BINARY_DIR} CACHE PATH "Path to LLVM build tree")
set(LLVM_LIBRARY_DIR ${LIBRARY_DIR} CACHE PATH "Path to llvm/lib")
set(LLVM_MAIN_SRC_DIR ${MAIN_SRC_DIR} CACHE PATH "Path to LLVM source tree")
set(LLVM_TOOLS_BINARY_DIR ${TOOLS_BINARY_DIR} CACHE PATH "Path to llvm/bin")
set(LLVM_INCLUDE_DIR ${INCLUDE_DIR} CACHE PATH "Paths to LLVM headers")
# Detect if we have the LLVMXRay and TestingSupport library installed and
# available from llvm-config.
execute_process(
COMMAND ${LLVM_CONFIG_PATH} "--ldflags" "--libs" "xray"
RESULT_VARIABLE HAD_ERROR
OUTPUT_VARIABLE CONFIG_OUTPUT
ERROR_QUIET)
if (HAD_ERROR)
message(WARNING "llvm-config finding xray failed with status ${HAD_ERROR}")
set(COMPILER_RT_HAS_LLVMXRAY FALSE)
else()
string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" CONFIG_OUTPUT ${CONFIG_OUTPUT})
list(GET CONFIG_OUTPUT 0 LDFLAGS)
list(GET CONFIG_OUTPUT 1 LIBLIST)
file(TO_CMAKE_PATH "${LDFLAGS}" LDFLAGS)
file(TO_CMAKE_PATH "${LIBLIST}" LIBLIST)
set(LLVM_XRAY_LDFLAGS ${LDFLAGS} CACHE STRING "Linker flags for LLVMXRay library")
set(LLVM_XRAY_LIBLIST ${LIBLIST} CACHE STRING "Library list for LLVMXRay")
set(COMPILER_RT_HAS_LLVMXRAY TRUE)
endif()
set(COMPILER_RT_HAS_LLVMTESTINGSUPPORT FALSE)
execute_process(
COMMAND ${LLVM_CONFIG_PATH} "--ldflags" "--libs" "testingsupport"
RESULT_VARIABLE HAD_ERROR
OUTPUT_VARIABLE CONFIG_OUTPUT
ERROR_QUIET)
if (HAD_ERROR)
message(WARNING "llvm-config finding testingsupport failed with status ${HAD_ERROR}")
elseif(COMPILER_RT_INCLUDE_TESTS)
string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" CONFIG_OUTPUT ${CONFIG_OUTPUT})
list(GET CONFIG_OUTPUT 0 LDFLAGS)
list(GET CONFIG_OUTPUT 1 LIBLIST)
if (LIBLIST STREQUAL "")
message(WARNING "testingsupport library not installed, some tests will be skipped")
else()
file(TO_CMAKE_PATH "${LDFLAGS}" LDFLAGS)
file(TO_CMAKE_PATH "${LIBLIST}" LIBLIST)
set(LLVM_TESTINGSUPPORT_LDFLAGS ${LDFLAGS} CACHE STRING "Linker flags for LLVMTestingSupport library")
set(LLVM_TESTINGSUPPORT_LIBLIST ${LIBLIST} CACHE STRING "Library list for LLVMTestingSupport")
set(COMPILER_RT_HAS_LLVMTESTINGSUPPORT TRUE)
endif()
endif()
# Make use of LLVM CMake modules.
# --cmakedir is supported since llvm r291218 (4.0 release)
execute_process(
COMMAND ${LLVM_CONFIG_PATH} --cmakedir
RESULT_VARIABLE HAD_ERROR
OUTPUT_VARIABLE CONFIG_OUTPUT)
if(NOT HAD_ERROR)
string(STRIP "${CONFIG_OUTPUT}" LLVM_CMAKE_PATH_FROM_LLVM_CONFIG)
file(TO_CMAKE_PATH ${LLVM_CMAKE_PATH_FROM_LLVM_CONFIG} LLVM_CMAKE_PATH)
else()
file(TO_CMAKE_PATH ${LLVM_BINARY_DIR} LLVM_BINARY_DIR_CMAKE_STYLE)
set(LLVM_CMAKE_PATH "${LLVM_BINARY_DIR_CMAKE_STYLE}/lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm")
endif()
list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}")
# Get some LLVM variables from LLVMConfig.
include("${LLVM_CMAKE_PATH}/LLVMConfig.cmake")
set(LLVM_LIBRARY_OUTPUT_INTDIR
${LLVM_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX})
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()
set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${CMAKE_C_COMPILER_TARGET})
else()
set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${TARGET_TRIPLE} CACHE STRING
"Default triple for which compiler-rt runtimes will be built.")
endif()
if(DEFINED COMPILER_RT_TEST_TARGET_TRIPLE)
# Backwards compatibility: this variable used to be called
# COMPILER_RT_TEST_TARGET_TRIPLE.
set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${COMPILER_RT_TEST_TARGET_TRIPLE})
endif()
string(REPLACE "-" ";" TARGET_TRIPLE_LIST ${COMPILER_RT_DEFAULT_TARGET_TRIPLE})
list(GET TARGET_TRIPLE_LIST 0 COMPILER_RT_DEFAULT_TARGET_ARCH)
# Map various forms of the architecture names to the canonical forms
# (as they are used by clang, see getArchNameForCompilerRTLib).
if("${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()
# Determine if test target triple is specified explicitly, and doesn't match the
# default.
if(NOT COMPILER_RT_DEFAULT_TARGET_TRIPLE STREQUAL 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} ${dash_index} -1 triple_suffix)
if(COMPILER_RT_DEFAULT_TARGET_ONLY)
# Use exact spelling when building only for the target specified to CMake.
set(target "${COMPILER_RT_DEFAULT_TARGET_TRIPLE}")
elseif(ANDROID AND ${arch} STREQUAL "i386")
set(target "i686${triple_suffix}")
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} ${COMPILER_RT_INSTALL_PATH}/lib/${target} PARENT_SCOPE)
else()
set(${install_dir} ${COMPILER_RT_LIBRARY_INSTALL_DIR} PARENT_SCOPE)
endif()
endfunction()
function(get_compiler_rt_output_dir arch output_dir)
if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
get_compiler_rt_target(${arch} target)
set(${output_dir} ${COMPILER_RT_OUTPUT_DIR}/lib/${target} PARENT_SCOPE)
else()
set(${output_dir} ${COMPILER_RT_LIBRARY_OUTPUT_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-${ARG_PARENT_TARGET} PROPERTIES
FOLDER "Compiler-RT Misc")
set_target_properties(install-${ARG_PARENT_TARGET}-stripped PROPERTIES
FOLDER "Compiler-RT Misc")
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()
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