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4d33a8dfcf67e970ea4d150d514b27de02e79aee
clang-p2996/compiler-rt/cmake/Modules/CompilerRTDarwinUtils.cmake
Petr Hosek e8a4e5892b [CMake] Use correct include path for InstrProfData.inc on Darwin 
On Darwin, part of the profile runtime is included in the builtin
library. f35032e changed the location of InstrProfData.inc but the
builtin build for Darwin hasn't been updated to include the new
path which causes a breakage when building for Darwin. This change
addresses this breakage.
2019-11-24 13:26:01 -08:00

504 lines
19 KiB
CMake
Raw Blame History

include(CMakeParseArguments)
include(CompilerRTUtils)
include(BuiltinTests)
set(CMAKE_LIPO "lipo" CACHE PATH "path to the lipo tool")
# On OS X SDKs can be installed anywhere on the base system and xcode-select can
# set the default Xcode to use. This function finds the SDKs that are present in
# the current Xcode.
function(find_darwin_sdk_dir var sdk_name)
set(DARWIN_${sdk_name}_CACHED_SYSROOT "" CACHE STRING "Darwin SDK path for SDK ${sdk_name}.")
set(DARWIN_PREFER_PUBLIC_SDK OFF CACHE BOOL "Prefer Darwin public SDK, even when an internal SDK is present.")
if(DARWIN_${sdk_name}_CACHED_SYSROOT)
set(${var} ${DARWIN_${sdk_name}_CACHED_SYSROOT} PARENT_SCOPE)
return()
endif()
if(NOT DARWIN_PREFER_PUBLIC_SDK)
# Let's first try the internal SDK, otherwise use the public SDK.
execute_process(
COMMAND xcrun --sdk ${sdk_name}.internal --show-sdk-path
RESULT_VARIABLE result_process
OUTPUT_VARIABLE var_internal
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_FILE /dev/null
)
endif()
if((NOT result_process EQUAL 0) OR "" STREQUAL "${var_internal}")
execute_process(
COMMAND xcrun --sdk ${sdk_name} --show-sdk-path
RESULT_VARIABLE result_process
OUTPUT_VARIABLE var_internal
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_FILE /dev/null
)
else()
set(${var}_INTERNAL ${var_internal} PARENT_SCOPE)
endif()
if(result_process EQUAL 0)
set(${var} ${var_internal} PARENT_SCOPE)
endif()
message(STATUS "Checking DARWIN_${sdk_name}_SYSROOT - '${var_internal}'")
set(DARWIN_${sdk_name}_CACHED_SYSROOT ${var_internal} CACHE STRING "Darwin SDK path for SDK ${sdk_name}." FORCE)
endfunction()
function(find_darwin_sdk_version var sdk_name)
# We deliberately don't cache the result here because
# CMake's caching causes too many problems.
set(result_process 1)
if(NOT DARWIN_PREFER_PUBLIC_SDK)
# Let's first try the internal SDK, otherwise use the public SDK.
execute_process(
COMMAND xcrun --sdk ${sdk_name}.internal --show-sdk-version
RESULT_VARIABLE result_process
OUTPUT_VARIABLE var_internal
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_FILE /dev/null
)
endif()
if((NOT ${result_process} EQUAL 0) OR "" STREQUAL "${var_internal}")
execute_process(
COMMAND xcrun --sdk ${sdk_name} --show-sdk-version
RESULT_VARIABLE result_process
OUTPUT_VARIABLE var_internal
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_FILE /dev/null
)
endif()
if(NOT result_process EQUAL 0)
message(FATAL_ERROR
"Failed to determine SDK version for \"${sdk_name}\" SDK")
endif()
# Check reported version looks sane.
if (NOT "${var_internal}" MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+)?$")
message(FATAL_ERROR
"Reported SDK version \"${var_internal}\" does not look like a version")
endif()
set(${var} ${var_internal} PARENT_SCOPE)
endfunction()
# There isn't a clear mapping of what architectures are supported with a given
# target platform, but ld's version output does list the architectures it can
# link for.
function(darwin_get_toolchain_supported_archs output_var)
execute_process(
COMMAND "${CMAKE_LINKER}" -v
ERROR_VARIABLE LINKER_VERSION)
string(REGEX MATCH "configured to support archs: ([^\n]+)"
ARCHES_MATCHED "${LINKER_VERSION}")
if(ARCHES_MATCHED)
set(ARCHES "${CMAKE_MATCH_1}")
message(STATUS "Got ld supported ARCHES: ${ARCHES}")
string(REPLACE " " ";" ARCHES ${ARCHES})
else()
# If auto-detecting fails, fall back to a default set
message(WARNING "Detecting supported architectures from 'ld -v' failed. Returning default set.")
set(ARCHES "i386;x86_64;armv7;armv7s;arm64")
endif()
set(${output_var} ${ARCHES} PARENT_SCOPE)
endfunction()
# This function takes an OS and a list of architectures and identifies the
# subset of the architectures list that the installed toolchain can target.
function(darwin_test_archs os valid_archs)
if(${valid_archs})
message(STATUS "Using cached valid architectures for ${os}.")
return()
endif()
set(archs ${ARGN})
if(NOT TEST_COMPILE_ONLY)
message(STATUS "Finding valid architectures for ${os}...")
set(SIMPLE_C ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/src.c)
file(WRITE ${SIMPLE_C} "#include <stdio.h>\nint main() { printf(__FILE__); return 0; }\n")
set(os_linker_flags)
foreach(flag ${DARWIN_${os}_LINK_FLAGS})
set(os_linker_flags "${os_linker_flags} ${flag}")
endforeach()
# Disable building for i386 for macOS SDK >= 10.15. The SDK doesn't support
# linking for i386 and the corresponding OS doesn't allow running macOS i386
# binaries.
if ("${os}" STREQUAL "osx")
find_darwin_sdk_version(macosx_sdk_version "macosx")
if ("${macosx_sdk_version}" VERSION_GREATER 10.15 OR "${macosx_sdk_version}" VERSION_EQUAL 10.15)
message(STATUS "Disabling i386 slice for ${valid_archs}")
list(REMOVE_ITEM archs "i386")
endif()
endif()
endif()
# The simple program will build for x86_64h on the simulator because it is
# compatible with x86_64 libraries (mostly), but since x86_64h isn't actually
# a valid or useful architecture for the iOS simulator we should drop it.
if(${os} MATCHES "^(iossim|tvossim|watchossim)$")
list(REMOVE_ITEM archs "x86_64h")
endif()
set(working_archs)
foreach(arch ${archs})
set(arch_linker_flags "-arch ${arch} ${os_linker_flags}")
if(TEST_COMPILE_ONLY)
# `-w` is used to surpress compiler warnings which `try_compile_only()` treats as an error.
try_compile_only(CAN_TARGET_${os}_${arch} FLAGS -v -arch ${arch} ${DARWIN_${os}_CFLAGS} -w)
else()
set(SAVED_CMAKE_EXE_LINKER_FLAGS ${CMAKE_EXE_LINKER_FLAGS})
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${arch_linker_flags}")
try_compile(CAN_TARGET_${os}_${arch} ${CMAKE_BINARY_DIR} ${SIMPLE_C}
COMPILE_DEFINITIONS "-v -arch ${arch}" ${DARWIN_${os}_CFLAGS}
OUTPUT_VARIABLE TEST_OUTPUT)
set(CMAKE_EXE_LINKER_FLAGS ${SAVED_CMAKE_EXE_LINKER_FLAGS})
endif()
if(${CAN_TARGET_${os}_${arch}})
list(APPEND working_archs ${arch})
else()
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Testing compiler for supporting ${os}-${arch}:\n"
"${TEST_OUTPUT}\n")
endif()
endforeach()
set(${valid_archs} ${working_archs}
CACHE STRING "List of valid architectures for platform ${os}." FORCE)
endfunction()
# This function checks the host cpusubtype to see if it is post-haswell. Haswell
# and later machines can run x86_64h binaries. Haswell is cpusubtype 8.
function(darwin_filter_host_archs input output)
list_intersect(tmp_var DARWIN_osx_ARCHS ${input})
execute_process(
COMMAND sysctl hw.cpusubtype
OUTPUT_VARIABLE SUBTYPE)
string(REGEX MATCH "hw.cpusubtype: ([0-9]*)"
SUBTYPE_MATCHED "${SUBTYPE}")
set(HASWELL_SUPPORTED Off)
if(SUBTYPE_MATCHED)
if(${CMAKE_MATCH_1} GREATER 7)
set(HASWELL_SUPPORTED On)
endif()
endif()
if(NOT HASWELL_SUPPORTED)
list(REMOVE_ITEM tmp_var x86_64h)
endif()
set(${output} ${tmp_var} PARENT_SCOPE)
endfunction()
# Read and process the exclude file into a list of symbols
function(darwin_read_list_from_file output_var file)
if(EXISTS ${file})
file(READ ${file} EXCLUDES)
string(REPLACE "\n" ";" EXCLUDES ${EXCLUDES})
set(${output_var} ${EXCLUDES} PARENT_SCOPE)
endif()
endfunction()
# this function takes an OS, architecture and minimum version and provides a
# list of builtin functions to exclude
function(darwin_find_excluded_builtins_list output_var)
cmake_parse_arguments(LIB
""
"OS;ARCH;MIN_VERSION"
""
${ARGN})
if(NOT LIB_OS OR NOT LIB_ARCH)
message(FATAL_ERROR "Must specify OS and ARCH to darwin_find_excluded_builtins_list!")
endif()
darwin_read_list_from_file(${LIB_OS}_BUILTINS
${DARWIN_EXCLUDE_DIR}/${LIB_OS}.txt)
darwin_read_list_from_file(${LIB_OS}_${LIB_ARCH}_BASE_BUILTINS
${DARWIN_EXCLUDE_DIR}/${LIB_OS}-${LIB_ARCH}.txt)
if(LIB_MIN_VERSION)
file(GLOB builtin_lists ${DARWIN_EXCLUDE_DIR}/${LIB_OS}*-${LIB_ARCH}.txt)
foreach(builtin_list ${builtin_lists})
string(REGEX MATCH "${LIB_OS}([0-9\\.]*)-${LIB_ARCH}.txt" VERSION_MATCHED "${builtin_list}")
if (VERSION_MATCHED AND NOT CMAKE_MATCH_1 VERSION_LESS LIB_MIN_VERSION)
if(NOT smallest_version)
set(smallest_version ${CMAKE_MATCH_1})
elseif(CMAKE_MATCH_1 VERSION_LESS smallest_version)
set(smallest_version ${CMAKE_MATCH_1})
endif()
endif()
endforeach()
if(smallest_version)
darwin_read_list_from_file(${LIB_ARCH}_${LIB_OS}_BUILTINS
${DARWIN_EXCLUDE_DIR}/${LIB_OS}${smallest_version}-${LIB_ARCH}.txt)
endif()
endif()
set(${output_var}
${${LIB_ARCH}_${LIB_OS}_BUILTINS}
${${LIB_OS}_${LIB_ARCH}_BASE_BUILTINS}
${${LIB_OS}_BUILTINS} PARENT_SCOPE)
endfunction()
# adds a single builtin library for a single OS & ARCH
macro(darwin_add_builtin_library name suffix)
cmake_parse_arguments(LIB
""
"PARENT_TARGET;OS;ARCH"
"SOURCES;CFLAGS;DEFS;INCLUDE_DIRS"
${ARGN})
set(libname "${name}.${suffix}_${LIB_ARCH}_${LIB_OS}")
add_library(${libname} STATIC ${LIB_SOURCES})
if(DARWIN_${LIB_OS}_SYSROOT)
set(sysroot_flag -isysroot ${DARWIN_${LIB_OS}_SYSROOT})
endif()
# Make a copy of the compilation flags.
set(builtin_cflags ${LIB_CFLAGS})
# Strip out any inappropriate flags for the target.
if("${LIB_ARCH}" MATCHES "^(armv7|armv7k|armv7s)$")
set(builtin_cflags "")
foreach(cflag "${LIB_CFLAGS}")
string(REPLACE "-fomit-frame-pointer" "" cflag "${cflag}")
list(APPEND builtin_cflags ${cflag})
endforeach(cflag)
endif()
set_target_compile_flags(${libname}
${sysroot_flag}
${DARWIN_${LIB_OS}_BUILTIN_MIN_VER_FLAG}
${builtin_cflags})
target_include_directories(${libname}
PRIVATE ${LIB_INCLUDE_DIRS})
set_property(TARGET ${libname} APPEND PROPERTY
COMPILE_DEFINITIONS ${LIB_DEFS})
set_target_properties(${libname} PROPERTIES
OUTPUT_NAME ${libname}${COMPILER_RT_OS_SUFFIX})
set_target_properties(${libname} PROPERTIES
OSX_ARCHITECTURES ${LIB_ARCH})
if(LIB_PARENT_TARGET)
add_dependencies(${LIB_PARENT_TARGET} ${libname})
endif()
list(APPEND ${LIB_OS}_${suffix}_libs ${libname})
list(APPEND ${LIB_OS}_${suffix}_lipo_flags -arch ${arch} $<TARGET_FILE:${libname}>)
set_target_properties(${libname} PROPERTIES FOLDER "Compiler-RT Libraries")
endmacro()
function(darwin_lipo_libs name)
cmake_parse_arguments(LIB
""
"PARENT_TARGET;OUTPUT_DIR;INSTALL_DIR"
"LIPO_FLAGS;DEPENDS"
${ARGN})
if(LIB_DEPENDS AND LIB_LIPO_FLAGS)
add_custom_command(OUTPUT ${LIB_OUTPUT_DIR}/lib${name}.a
COMMAND ${CMAKE_COMMAND} -E make_directory ${LIB_OUTPUT_DIR}
COMMAND ${CMAKE_LIPO} -output
${LIB_OUTPUT_DIR}/lib${name}.a
-create ${LIB_LIPO_FLAGS}
DEPENDS ${LIB_DEPENDS}
)
add_custom_target(${name}
DEPENDS ${LIB_OUTPUT_DIR}/lib${name}.a)
set_target_properties(${name} PROPERTIES FOLDER "Compiler-RT Misc")
add_dependencies(${LIB_PARENT_TARGET} ${name})
if(CMAKE_CONFIGURATION_TYPES)
set(install_component ${LIB_PARENT_TARGET})
else()
set(install_component ${name})
endif()
install(FILES ${LIB_OUTPUT_DIR}/lib${name}.a
DESTINATION ${LIB_INSTALL_DIR}
COMPONENT ${install_component})
add_compiler_rt_install_targets(${name} PARENT_TARGET ${LIB_PARENT_TARGET})
else()
message(WARNING "Not generating lipo target for ${name} because no input libraries exist.")
endif()
endfunction()
# Generates builtin libraries for all operating systems specified in ARGN. Each
# OS library is constructed by lipo-ing together single-architecture libraries.
macro(darwin_add_builtin_libraries)
set(DARWIN_EXCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/Darwin-excludes)
set(CFLAGS "-fPIC -O3 -fvisibility=hidden -DVISIBILITY_HIDDEN -Wall -fomit-frame-pointer")
set(CMAKE_C_FLAGS "")
set(CMAKE_CXX_FLAGS "")
set(CMAKE_ASM_FLAGS "")
set(PROFILE_SOURCES ../profile/InstrProfiling
../profile/InstrProfilingBuffer
../profile/InstrProfilingPlatformDarwin
../profile/InstrProfilingWriter)
foreach (os ${ARGN})
list_intersect(DARWIN_BUILTIN_ARCHS DARWIN_${os}_BUILTIN_ARCHS BUILTIN_SUPPORTED_ARCH)
foreach (arch ${DARWIN_BUILTIN_ARCHS})
darwin_find_excluded_builtins_list(${arch}_${os}_EXCLUDED_BUILTINS
OS ${os}
ARCH ${arch}
MIN_VERSION ${DARWIN_${os}_BUILTIN_MIN_VER})
filter_builtin_sources(filtered_sources
EXCLUDE ${arch}_${os}_EXCLUDED_BUILTINS
${${arch}_SOURCES})
darwin_add_builtin_library(clang_rt builtins
OS ${os}
ARCH ${arch}
SOURCES ${filtered_sources}
CFLAGS ${CFLAGS} -arch ${arch}
PARENT_TARGET builtins)
endforeach()
# Don't build cc_kext libraries for simulator platforms
if(NOT DARWIN_${os}_SKIP_CC_KEXT)
foreach (arch ${DARWIN_BUILTIN_ARCHS})
# By not specifying MIN_VERSION this only reads the OS and OS-arch lists.
# We don't want to filter out the builtins that are present in libSystem
# because kexts can't link libSystem.
darwin_find_excluded_builtins_list(${arch}_${os}_EXCLUDED_BUILTINS
OS ${os}
ARCH ${arch})
filter_builtin_sources(filtered_sources
EXCLUDE ${arch}_${os}_EXCLUDED_BUILTINS
${${arch}_SOURCES})
# In addition to the builtins cc_kext includes some profile sources
darwin_add_builtin_library(clang_rt cc_kext
OS ${os}
ARCH ${arch}
SOURCES ${filtered_sources} ${PROFILE_SOURCES}
CFLAGS ${CFLAGS} -arch ${arch} -mkernel
DEFS KERNEL_USE
INCLUDE_DIRS ../../include
PARENT_TARGET builtins)
endforeach()
set(archive_name clang_rt.cc_kext_${os})
if(${os} STREQUAL "osx")
set(archive_name clang_rt.cc_kext)
endif()
darwin_lipo_libs(${archive_name}
PARENT_TARGET builtins
LIPO_FLAGS ${${os}_cc_kext_lipo_flags}
DEPENDS ${${os}_cc_kext_libs}
OUTPUT_DIR ${COMPILER_RT_LIBRARY_OUTPUT_DIR}
INSTALL_DIR ${COMPILER_RT_LIBRARY_INSTALL_DIR})
endif()
endforeach()
# We put the x86 sim slices into the archives for their base OS
foreach (os ${ARGN})
if(NOT ${os} MATCHES ".*sim$")
darwin_lipo_libs(clang_rt.${os}
PARENT_TARGET builtins
LIPO_FLAGS ${${os}_builtins_lipo_flags} ${${os}sim_builtins_lipo_flags}
DEPENDS ${${os}_builtins_libs} ${${os}sim_builtins_libs}
OUTPUT_DIR ${COMPILER_RT_LIBRARY_OUTPUT_DIR}
INSTALL_DIR ${COMPILER_RT_LIBRARY_INSTALL_DIR})
endif()
endforeach()
darwin_add_embedded_builtin_libraries()
endmacro()
macro(darwin_add_embedded_builtin_libraries)
# this is a hacky opt-out. If you can't target both intel and arm
# architectures we bail here.
set(DARWIN_SOFT_FLOAT_ARCHS armv6m armv7m armv7em armv7)
set(DARWIN_HARD_FLOAT_ARCHS armv7em armv7)
if(COMPILER_RT_SUPPORTED_ARCH MATCHES ".*armv.*")
list(FIND COMPILER_RT_SUPPORTED_ARCH i386 i386_idx)
if(i386_idx GREATER -1)
list(APPEND DARWIN_HARD_FLOAT_ARCHS i386)
endif()
list(FIND COMPILER_RT_SUPPORTED_ARCH x86_64 x86_64_idx)
if(x86_64_idx GREATER -1)
list(APPEND DARWIN_HARD_FLOAT_ARCHS x86_64)
endif()
set(MACHO_SYM_DIR ${CMAKE_CURRENT_SOURCE_DIR}/macho_embedded)
set(CFLAGS "-Oz -Wall -fomit-frame-pointer -ffreestanding")
set(CMAKE_C_FLAGS "")
set(CMAKE_CXX_FLAGS "")
set(CMAKE_ASM_FLAGS "")
set(SOFT_FLOAT_FLAG -mfloat-abi=soft)
set(HARD_FLOAT_FLAG -mfloat-abi=hard)
set(ENABLE_PIC Off)
set(PIC_FLAG -fPIC)
set(STATIC_FLAG -static)
set(DARWIN_macho_embedded_ARCHS armv6m armv7m armv7em armv7 i386 x86_64)
set(DARWIN_macho_embedded_LIBRARY_OUTPUT_DIR
${COMPILER_RT_OUTPUT_DIR}/lib/macho_embedded)
set(DARWIN_macho_embedded_LIBRARY_INSTALL_DIR
${COMPILER_RT_INSTALL_PATH}/lib/macho_embedded)
set(CFLAGS_armv7 "-target thumbv7-apple-darwin-eabi")
set(CFLAGS_i386 "-march=pentium")
darwin_read_list_from_file(common_FUNCTIONS ${MACHO_SYM_DIR}/common.txt)
darwin_read_list_from_file(thumb2_FUNCTIONS ${MACHO_SYM_DIR}/thumb2.txt)
darwin_read_list_from_file(thumb2_64_FUNCTIONS ${MACHO_SYM_DIR}/thumb2-64.txt)
darwin_read_list_from_file(arm_FUNCTIONS ${MACHO_SYM_DIR}/arm.txt)
darwin_read_list_from_file(i386_FUNCTIONS ${MACHO_SYM_DIR}/i386.txt)
set(armv6m_FUNCTIONS ${common_FUNCTIONS} ${arm_FUNCTIONS})
set(armv7m_FUNCTIONS ${common_FUNCTIONS} ${arm_FUNCTIONS} ${thumb2_FUNCTIONS})
set(armv7em_FUNCTIONS ${common_FUNCTIONS} ${arm_FUNCTIONS} ${thumb2_FUNCTIONS})
set(armv7_FUNCTIONS ${common_FUNCTIONS} ${arm_FUNCTIONS} ${thumb2_FUNCTIONS} ${thumb2_64_FUNCTIONS})
set(i386_FUNCTIONS ${common_FUNCTIONS} ${i386_FUNCTIONS})
set(x86_64_FUNCTIONS ${common_FUNCTIONS})
foreach(arch ${DARWIN_macho_embedded_ARCHS})
filter_builtin_sources(${arch}_filtered_sources
INCLUDE ${arch}_FUNCTIONS
${${arch}_SOURCES})
if(NOT ${arch}_filtered_sources)
message(WARNING "${arch}_SOURCES: ${${arch}_SOURCES}")
message(WARNING "${arch}_FUNCTIONS: ${${arch}_FUNCTIONS}")
message(FATAL_ERROR "Empty filtered sources!")
endif()
endforeach()
foreach(float_type SOFT HARD)
foreach(type PIC STATIC)
string(TOLOWER "${float_type}_${type}" lib_suffix)
foreach(arch ${DARWIN_${float_type}_FLOAT_ARCHS})
set(DARWIN_macho_embedded_SYSROOT ${DARWIN_osx_SYSROOT})
set(float_flag)
if(${arch} MATCHES "^arm")
# x86 targets are hard float by default, but the complain about the
# float ABI flag, so don't pass it unless we're targeting arm.
set(float_flag ${${float_type}_FLOAT_FLAG})
endif()
darwin_add_builtin_library(clang_rt ${lib_suffix}
OS macho_embedded
ARCH ${arch}
SOURCES ${${arch}_filtered_sources}
CFLAGS ${CFLAGS} -arch ${arch} ${${type}_FLAG} ${float_flag} ${CFLAGS_${arch}}
PARENT_TARGET builtins)
endforeach()
foreach(lib ${macho_embedded_${lib_suffix}_libs})
set_target_properties(${lib} PROPERTIES LINKER_LANGUAGE C)
endforeach()
darwin_lipo_libs(clang_rt.${lib_suffix}
PARENT_TARGET builtins
LIPO_FLAGS ${macho_embedded_${lib_suffix}_lipo_flags}
DEPENDS ${macho_embedded_${lib_suffix}_libs}
OUTPUT_DIR ${DARWIN_macho_embedded_LIBRARY_OUTPUT_DIR}
INSTALL_DIR ${DARWIN_macho_embedded_LIBRARY_INSTALL_DIR})
endforeach()
endforeach()
endif()
endmacro()
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