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llvm-project/compiler-rt/cmake/Modules/CompilerRTDarwinUtils.cmake
Ahmed Bougacha 8c8f3286a7
[compiler-rt] Don't run arm64e builtins tests on darwin. (#153312) 
The compiler-rt build gradually learned to target arm64e. With that, we
build builtins for arm64e, but running their tests usually isn't
possible, because most versions of macOS so far restrict arm64e (on
account of its unstable ABI).

Starting with macOS 26, arm64e executables can be run, because the
aligned linker automatically targets ptrauth ABI version 1. Without
that, (at ABI version 0) these can't be executed.

We can't rely or require new linkers (and we elsewhere explicitly
fallback to ld classic anyway), so in the meantime one way to execute
these would be to explicitly ask for ABI version 1, which we generally
try to avoid, and don't support in our llvm (which unconditionally
targets ABI version 0).

This is also an uncommon situation; sanitizer runtime tests aren't run
on arm64e today, because we haven't listed arm64e as a supported arch
yet.
Everything other than builtins also tests for execution in cmake first;
we should consider that, but it has its own problems.

So we can simply disable arm64e from tests, by filtering it out as a
valid darwin host arch, which accurately reflects reality.

When we try to add arm64e sanitizer runtime build and test support,
we'll want to change that, but that's a bigger problem than builtins.
2025-08-13 10:21:34 +01:00

619 lines
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CMake
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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 ${sdk_name}." FORCE)
endfunction()
function(find_darwin_sdk_version var sdk_name)
if (DARWIN_${sdk_name}_OVERRIDE_SDK_VERSION)
message(WARNING "Overriding ${sdk_name} SDK version to ${DARWIN_${sdk_name}_OVERRIDE_SDK_VERSION}")
set(${var} "${DARWIN_${sdk_name}_OVERRIDE_SDK_VERSION}" PARENT_SCOPE)
return()
endif()
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>\n#include <unistd.h>\nint main(void) { printf(__FILE__); fork(); 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 ${valid_archs}")
list(REMOVE_ITEM archs "i386")
endif()
endif()
endif()
# The simple program will build for x86_64h on the simulator because it is
# compatible with x86_64 libraries (mostly), but since x86_64h isn't actually
# a valid or useful architecture for the simulators. We should drop it.
if(${os} MATCHES "^(iossim|tvossim|watchossim)$")
list(REMOVE_ITEM archs "x86_64h")
if ("i386" IN_LIST archs)
list(REMOVE_ITEM archs "i386")
message(STATUS "Disabling i386 slice for simulator")
endif()
endif()
if(${os} MATCHES "^ios$")
message(STATUS "Disabling sanitizers armv7* slice for ios")
list(FILTER archs EXCLUDE REGEX "armv7.*")
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 cputype/cpusubtype to filter supported
# architecture for the host OS. This is used to determine which tests are
# available for the host.
function(darwin_filter_host_archs input output)
list_intersect(tmp_var DARWIN_osx_ARCHS ${input})
execute_process(
COMMAND sysctl hw.cputype
OUTPUT_VARIABLE CPUTYPE)
string(REGEX MATCH "hw.cputype: ([0-9]*)"
CPUTYPE_MATCHED "${CPUTYPE}")
set(ARM_HOST Off)
if(CPUTYPE_MATCHED)
# ARM cputype is (0x01000000 | 12) and X86(_64) is always 7.
if(${CMAKE_MATCH_1} GREATER 11)
set(ARM_HOST On)
endif()
endif()
# arm64e isn't usually supported out of the box on darwin, because of ABI.
list(REMOVE_ITEM tmp_var arm64e)
if(ARM_HOST)
list(REMOVE_ITEM tmp_var i386)
list(REMOVE_ITEM tmp_var x86_64)
list(REMOVE_ITEM tmp_var x86_64h)
else()
list(REMOVE_ITEM tmp_var arm64)
execute_process(
COMMAND sysctl hw.cpusubtype
OUTPUT_VARIABLE SUBTYPE)
string(REGEX MATCH "hw.cpusubtype: ([0-9]*)"
SUBTYPE_MATCHED "${SUBTYPE}")
set(HASWELL_SUPPORTED Off)
if(SUBTYPE_MATCHED)
if(${CMAKE_MATCH_1} GREATER 7)
set(HASWELL_SUPPORTED On)
endif()
endif()
if(NOT HASWELL_SUPPORTED)
list(REMOVE_ITEM tmp_var x86_64h)
endif()
endif()
set(${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 ${cflag})
endforeach(cflag)
endif()
if ("${LIB_OS}" MATCHES ".*sim$")
# Pass an explicit -simulator environment to the -target option to ensure
# that we don't rely on the architecture to infer whether we're building
# for the simulator.
string(REGEX REPLACE "sim" "" base_os "${LIB_OS}")
list(APPEND builtin_cflags
-target "${LIB_ARCH}-apple-${base_os}${DARWIN_${LIBOS}_BUILTIN_MIN_VER}-simulator")
endif()
if ("${COMPILER_RT_ENABLE_MACCATALYST}" AND
"${LIB_OS}" MATCHES "^osx$")
# Build the macOS builtins with Mac Catalyst support.
list(APPEND builtin_cflags
"SHELL:-target ${LIB_ARCH}-apple-macos${DARWIN_osx_BUILTIN_MIN_VER} -darwin-target-variant ${LIB_ARCH}-apple-ios13.1-macabi")
endif()
set_target_compile_flags(${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()
# Filter the list of builtin sources for Darwin, then delegate to the generic
# filtering.
#
# `exclude_or_include` must be one of:
# - EXCLUDE: remove every item whose name (w/o extension) matches a name in
# `excluded_list`.
# - INCLUDE: keep only items whose name (w/o extension) matches something
# in `excluded_list`.
function(darwin_filter_builtin_sources output_var name exclude_or_include excluded_list)
if(exclude_or_include STREQUAL "EXCLUDE")
set(filter_action GREATER)
set(filter_value -1)
elseif(exclude_or_include STREQUAL "INCLUDE")
set(filter_action LESS)
set(filter_value 0)
else()
message(FATAL_ERROR "darwin_filter_builtin_sources called without EXCLUDE|INCLUDE")
endif()
set(intermediate ${ARGN})
foreach(_file ${intermediate})
get_filename_component(_name_we ${_file} NAME_WE)
list(FIND ${excluded_list} ${_name_we} _found)
if(_found ${filter_action} ${filter_value})
list(REMOVE_ITEM intermediate ${_file})
endif()
endforeach()
filter_builtin_sources(intermediate ${name})
set(${output_var} ${intermediate} PARENT_SCOPE)
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 "")
append_list_if(COMPILER_RT_HAS_ASM_LSE -DHAS_ASM_LSE CFLAGS)
set(PROFILE_SOURCES ../profile/InstrProfiling.c
../profile/InstrProfilingBuffer.c
../profile/InstrProfilingPlatformDarwin.c
../profile/InstrProfilingWriter.c
../profile/InstrProfilingInternal.c
../profile/InstrProfilingVersionVar.c)
foreach (os ${ARGN})
set(macosx_sdk_version 99999)
if ("${os}" STREQUAL "osx")
find_darwin_sdk_version(macosx_sdk_version "macosx")
endif()
add_security_warnings(CFLAGS ${macosx_sdk_version})
list_intersect(DARWIN_BUILTIN_ARCHS DARWIN_${os}_BUILTIN_ARCHS BUILTIN_SUPPORTED_ARCH)
if((arm64 IN_LIST DARWIN_BUILTIN_ARCHS OR arm64e IN_LIST DARWIN_BUILTIN_ARCHS) AND NOT TARGET lse_builtin_symlinks)
add_custom_target(
lse_builtin_symlinks
BYPRODUCTS ${lse_builtins}
${arm64_lse_commands}
)
set(deps_arm64 lse_builtin_symlinks)
set(deps_arm64e lse_builtin_symlinks)
endif()
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})
check_c_source_compiles("_Float16 foo(_Float16 x) { return x; }"
COMPILER_RT_HAS_${arch}_FLOAT16)
append_list_if(COMPILER_RT_HAS_${arch}_FLOAT16 -DCOMPILER_RT_HAS_FLOAT16 BUILTIN_CFLAGS_${arch})
check_c_source_compiles("__bf16 foo(__bf16 x) { return x; }"
COMPILER_RT_HAS_${arch}_BFLOAT16)
# Build BF16 files only when "__bf16" is available.
if(COMPILER_RT_HAS_${arch}_BFLOAT16)
list(APPEND ${arch}_SOURCES ${BF16_SOURCES})
endif()
darwin_filter_builtin_sources(filtered_sources
${os}_${arch}
EXCLUDE ${arch}_${os}_EXCLUDED_BUILTINS
${${arch}_SOURCES})
darwin_add_builtin_library(clang_rt builtins
OS ${os}
ARCH ${arch}
DEPS ${deps_${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 ${arch})
darwin_filter_builtin_sources(filtered_sources
cc_kext_${os}_${arch}
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}
DEPS ${deps_${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_OUTPUT_LIBRARY_DIR}
INSTALL_DIR ${COMPILER_RT_INSTALL_LIBRARY_DIR})
endif()
endforeach()
foreach (os ${ARGN})
darwin_lipo_libs(clang_rt.${os}
PARENT_TARGET builtins
LIPO_FLAGS ${${os}_builtins_lipo_flags}
DEPENDS ${${os}_builtins_libs}
OUTPUT_DIR ${COMPILER_RT_OUTPUT_LIBRARY_DIR}
INSTALL_DIR ${COMPILER_RT_INSTALL_LIBRARY_DIR})
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_LIBRARY_DIR}/macho_embedded)
set(DARWIN_macho_embedded_LIBRARY_INSTALL_DIR
${COMPILER_RT_INSTALL_LIBRARY_DIR}/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 ${DARWIN_macho_embedded_ARCHS})
darwin_filter_builtin_sources(${arch}_filtered_sources
macho_embedded_${arch}
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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