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swift-mirror/cmake/modules/AddSwift.cmake
3405691582 0158137afc Supply -z,nobtcfi on x86_64 as well. 
On older x86_64 hardware, this isn't a problem since CET IBT hardware
support may not have been available. However, newer x86_64 hardware
supports the feature, which will lead to BTCFI failures. Therefore ensure
the same BTCFI disabling logic applies on x86_64 as well as aarch64.
2025-10-20 21:23:45 -04:00

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include(macCatalystUtils)
include(SwiftList)
include(SwiftWindowsSupport)
include(SwiftAndroidSupport)
include(SwiftCXXUtils)
function(_swift_gyb_target_sources target scope)
file(GLOB GYB_UNICODE_DATA ${SWIFT_SOURCE_DIR}/utils/UnicodeData/*)
file(GLOB GYB_STDLIB_SUPPORT ${SWIFT_SOURCE_DIR}/utils/gyb_stdlib_support.py)
file(GLOB GYB_SOURCEKIT_SUPPORT ${SWIFT_SOURCE_DIR}/utils/gyb_sourcekit_support/*.py)
set(GYB_SOURCES
${SWIFT_SOURCE_DIR}/utils/gyb
${SWIFT_SOURCE_DIR}/utils/gyb.py
${SWIFT_SOURCE_DIR}/utils/GYBUnicodeDataUtils.py
${SWIFT_SOURCE_DIR}/utils/SwiftIntTypes.py
${GYB_UNICODE_DATA}
${GYB_STDLIB_SUPPORT}
${GYB_SYNTAX_SUPPORT}
${GYB_SOURCEKIT_SUPPORT})
foreach(source ${ARGN})
get_filename_component(generated ${source} NAME_WLE)
get_filename_component(absolute ${source} REALPATH)
add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${generated}
COMMAND
${CMAKE_COMMAND} -E env $<TARGET_FILE:Python3::Interpreter> ${SWIFT_SOURCE_DIR}/utils/gyb -D CMAKE_SIZEOF_VOID_P=${CMAKE_SIZEOF_VOID_P} ${SWIFT_GYB_FLAGS} -o ${CMAKE_CURRENT_BINARY_DIR}/${generated}.tmp ${absolute}
COMMAND
${CMAKE_COMMAND} -E copy_if_different ${CMAKE_CURRENT_BINARY_DIR}/${generated}.tmp ${CMAKE_CURRENT_BINARY_DIR}/${generated}
COMMAND
${CMAKE_COMMAND} -E remove ${CMAKE_CURRENT_BINARY_DIR}/${generated}.tmp
DEPENDS
${GYB_SOURCES}
${absolute})
set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/${generated} PROPERTIES
GENERATED TRUE)
target_sources(${target} ${scope}
${CMAKE_CURRENT_BINARY_DIR}/${generated})
endforeach()
endfunction()
# SWIFTLIB_DIR is the directory in the build tree where Swift resource files
# should be placed. Note that $CMAKE_CFG_INTDIR expands to "." for
# single-configuration builds.
set(SWIFTLIB_DIR
"${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib/swift")
set(SWIFTSTATICLIB_DIR
"${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib/swift_static")
# SWIFTLIBEXEC_DIR is the directory in the build tree where Swift auxiliary
# executables should be placed.
set(SWIFTLIBEXEC_DIR
"${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/libexec/swift")
function(_compute_lto_flag option out_var)
string(TOLOWER "${option}" lowercase_option)
if (lowercase_option STREQUAL "full")
set(${out_var} "-flto=full" PARENT_SCOPE)
elseif (lowercase_option STREQUAL "thin")
set(${out_var} "-flto=thin" PARENT_SCOPE)
endif()
endfunction()
function(_set_target_prefix_and_suffix target kind sdk)
precondition(target MESSAGE "target is required")
precondition(kind MESSAGE "kind is required")
precondition(sdk MESSAGE "sdk is required")
if(sdk STREQUAL "ANDROID")
if(kind STREQUAL "STATIC")
set_target_properties(${target} PROPERTIES PREFIX "lib" SUFFIX ".a")
elseif(kind STREQUAL "SHARED")
set_target_properties(${target} PROPERTIES PREFIX "lib" SUFFIX ".so")
endif()
elseif(sdk STREQUAL "WINDOWS")
if(kind STREQUAL "STATIC")
set_target_properties(${target} PROPERTIES PREFIX "" SUFFIX ".lib")
elseif(kind STREQUAL "SHARED")
set_target_properties(${target} PROPERTIES PREFIX "" SUFFIX ".dll")
endif()
endif()
endfunction()
function(swift_get_host_triple out_var)
if(SWIFT_HOST_VARIANT_SDK IN_LIST SWIFT_DARWIN_PLATFORMS)
set(DEPLOYMENT_VERSION "${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_DEPLOYMENT_VERSION}")
endif()
if(SWIFT_HOST_VARIANT_SDK STREQUAL "ANDROID")
set(DEPLOYMENT_VERSION ${SWIFT_ANDROID_API_LEVEL})
endif()
get_target_triple(target target_variant "${SWIFT_HOST_VARIANT_SDK}" "${SWIFT_HOST_VARIANT_ARCH}"
MACCATALYST_BUILD_FLAVOR ""
DEPLOYMENT_VERSION "${DEPLOYMENT_VERSION}")
set(${out_var} "${target}" PARENT_SCOPE)
endfunction()
# Usage:
# _add_host_variant_c_compile_link_flags(name)
function(_add_host_variant_c_compile_link_flags name)
# MSVC and gcc don't understand -target.
# clang-cl understands --target.
if(CMAKE_C_COMPILER_ID MATCHES "Clang")
if("${CMAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "MSVC") # clang-cl options
target_compile_options(${name} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:--target=${SWIFT_HOST_TRIPLE}>)
target_link_options(${name} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:--target=${SWIFT_HOST_TRIPLE}>)
elseif("${SWIFT_HOST_VARIANT_SDK}" STREQUAL "EMSCRIPTEN") # emcc options
# some older emcc don't understand -target=<triple>
# FIXME: remove this when we no longer support Emscripten < 3.1.44
# https://github.com/emscripten-core/emscripten/pull/19840
target_compile_options(${name} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:--target=${SWIFT_HOST_TRIPLE}>)
target_link_options(${name} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-target=${SWIFT_HOST_TRIPLE}>)
else()
target_compile_options(${name} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-target;${SWIFT_HOST_TRIPLE}>)
target_link_options(${name} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-target;${SWIFT_HOST_TRIPLE}>)
endif()
endif()
if (CMAKE_Swift_COMPILER)
target_compile_options(${name} PRIVATE $<$<COMPILE_LANGUAGE:Swift>:-target;${SWIFT_HOST_TRIPLE}>)
endif()
set(_sysroot
"${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_ARCH_${SWIFT_HOST_VARIANT_ARCH}_PATH}")
if(SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_USE_ISYSROOT)
target_compile_options(${name} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-isysroot;${_sysroot}>)
elseif(NOT SWIFT_COMPILER_IS_MSVC_LIKE AND NOT "${_sysroot}" STREQUAL "/")
target_compile_options(${name} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:--sysroot=${_sysroot}>)
endif()
if(SWIFT_HOST_VARIANT_SDK STREQUAL "ANDROID")
# Make sure the Android NDK lld is used.
swift_android_tools_path(${SWIFT_HOST_VARIANT_ARCH} tools_path)
target_compile_options(${name} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-B${tools_path}>)
endif()
if(SWIFT_HOST_VARIANT_SDK IN_LIST SWIFT_DARWIN_PLATFORMS)
# We collate -F with the framework path to avoid unwanted deduplication
# of options by target_compile_options -- this way no undesired
# side effects are introduced should a new search path be added.
target_compile_options(${name} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:
"-F${SWIFT_SDK_${SWIFT_HOST_VARIANT_ARCH}_PATH}/../../../Developer/Library/Frameworks"
>)
set_property(TARGET ${name} PROPERTY OSX_ARCHITECTURES "${SWIFT_HOST_VARIANT_ARCH}")
endif()
_compute_lto_flag("${SWIFT_TOOLS_ENABLE_LTO}" _lto_flag_out)
if (_lto_flag_out)
target_compile_options(${name} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:${_lto_flag_out}>)
target_link_options(${name} PRIVATE ${_lto_flag_out})
endif()
if(SWIFT_ANALYZE_CODE_COVERAGE)
set(_cov_flags $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-fprofile-instr-generate -fcoverage-mapping>)
target_compile_options(${name} PRIVATE ${_cov_flags})
target_link_options(${name} PRIVATE ${_cov_flags})
endif()
endfunction()
function(_add_host_variant_c_compile_flags target)
_add_host_variant_c_compile_link_flags(${target})
is_build_type_optimized("${CMAKE_BUILD_TYPE}" optimized)
if(optimized)
if("${CMAKE_BUILD_TYPE}" STREQUAL "MinSizeRel")
target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-Os>)
else()
target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-O2>)
endif()
# Omit leaf frame pointers on x86 production builds (optimized, no debug
# info, and no asserts).
is_build_type_with_debuginfo("${CMAKE_BUILD_TYPE}" debug)
if(NOT debug AND NOT LLVM_ENABLE_ASSERTIONS)
if(SWIFT_HOST_VARIANT_ARCH MATCHES "i?86")
if(NOT SWIFT_COMPILER_IS_MSVC_LIKE)
target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-momit-leaf-frame-pointer>)
else()
target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:/Oy>)
endif()
endif()
endif()
else()
if(NOT SWIFT_COMPILER_IS_MSVC_LIKE)
target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-O0>)
else()
target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:/Od>)
endif()
endif()
# CMake automatically adds the flags for debug info if we use MSVC/clang-cl.
if(NOT SWIFT_COMPILER_IS_MSVC_LIKE)
is_build_type_with_debuginfo("${CMAKE_BUILD_TYPE}" debuginfo)
if(debuginfo)
_compute_lto_flag("${SWIFT_TOOLS_ENABLE_LTO}" _lto_flag_out)
if(_lto_flag_out)
target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-gline-tables-only>)
else()
target_compile_options(${target} PRIVATE ${SWIFT_DEBUGINFO_NON_LTO_ARGS})
endif()
else()
target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-g0>)
target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:Swift>:-gnone>)
endif()
endif()
if(SWIFT_HOST_VARIANT_SDK STREQUAL "WINDOWS")
# MSVC/clang-cl don't support -fno-pic or -fms-compatibility-version.
if(NOT SWIFT_COMPILER_IS_MSVC_LIKE)
target_compile_options(${target} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-fms-compatibility-version=1900 -fno-pic>)
endif()
target_compile_definitions(${target} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:LLVM_ON_WIN32 _CRT_SECURE_NO_WARNINGS _CRT_NONSTDC_NO_WARNINGS>)
if(NOT "${CMAKE_C_COMPILER_ID}" STREQUAL "MSVC")
target_compile_definitions(${target} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:_CRT_USE_BUILTIN_OFFSETOF>)
endif()
# TODO(compnerd) permit building for different families
target_compile_definitions(${target} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:_CRT_USE_WINAPI_FAMILY_DESKTOP_APP>)
if(SWIFT_HOST_VARIANT_ARCH MATCHES arm)
target_compile_definitions(${target} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE>)
endif()
target_compile_definitions(${target} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:
# TODO(compnerd) handle /MT
_MD
_DLL
# NOTE: We assume that we are using VS 2015 U2+
_ENABLE_ATOMIC_ALIGNMENT_FIX
# NOTE: We use over-aligned values for the RefCount side-table
# (see revision d913eefcc93f8c80d6d1a6de4ea898a2838d8b6f)
# This is required to build with VS2017 15.8+
_ENABLE_EXTENDED_ALIGNED_STORAGE=1>)
if(SWIFT_HOST_VARIANT_ARCH MATCHES "ARM64|aarch64")
target_compile_options(${target} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-D_STD_ATOMIC_USE_ARM64_LDAR_STLR=0>)
endif()
# msvcprt's std::function requires RTTI, but we do not want RTTI data.
# Emulate /GR-.
# TODO(compnerd) when moving up to VS 2017 15.3 and newer, we can disable
# RTTI again
if(SWIFT_COMPILER_IS_MSVC_LIKE)
target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:/GR->)
else()
target_compile_options(${target} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-frtti>
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>"SHELL:-Xclang -fno-rtti-data">)
endif()
# NOTE: VS 2017 15.3 introduced this to disable the static components of
# RTTI as well. This requires a newer SDK though and we do not have
# guarantees on the SDK version currently.
target_compile_definitions(${target} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:_HAS_STATIC_RTTI=0>)
# NOTE(compnerd) workaround LLVM invoking `add_definitions(-D_DEBUG)` which
# causes failures for the runtime library when cross-compiling due to
# undefined symbols from the standard library.
if(NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
target_compile_options(${target} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-U_DEBUG>)
endif()
endif()
if(SWIFT_HOST_VARIANT_SDK STREQUAL "ANDROID")
if(SWIFT_HOST_VARIANT_ARCH STREQUAL "x86_64")
# NOTE(compnerd) Android NDK 21 or lower will generate library calls to
# `__sync_val_compare_and_swap_16` rather than lowering to the CPU's
# `cmpxchg16b` instruction as the `cx16` feature is disabled due to a bug
# in Clang. This is being fixed in the current master Clang and will
# hopefully make it into Clang 9.0. In the mean time, workaround this in
# the build.
if(CMAKE_C_COMPILER_ID MATCHES Clang AND CMAKE_C_COMPILER_VERSION
VERSION_LESS 9.0.0)
target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-mcx16>)
endif()
endif()
endif()
if(LLVM_ENABLE_ASSERTIONS)
target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-UNDEBUG>)
else()
target_compile_definitions(${target} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:NDEBUG>)
endif()
if(SWIFT_ENABLE_RUNTIME_FUNCTION_COUNTERS)
target_compile_definitions(${target} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:SWIFT_ENABLE_RUNTIME_FUNCTION_COUNTERS>)
endif()
string(TOUPPER "${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_THREADING_PACKAGE}" _threading_package)
target_compile_definitions(${target} PRIVATE
"SWIFT_THREADING_${_threading_package}")
if((SWIFT_HOST_VARIANT_ARCH STREQUAL "armv7" OR
SWIFT_HOST_VARIANT_ARCH STREQUAL "aarch64") AND
(SWIFT_HOST_VARIANT_SDK STREQUAL "LINUX" OR
SWIFT_HOST_VARIANT_SDK STREQUAL "ANDROID"))
target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-funwind-tables>)
endif()
if(SWIFT_HOST_VARIANT_SDK STREQUAL "LINUX")
if(SWIFT_HOST_VARIANT_ARCH STREQUAL "x86_64")
# this is the minimum architecture that supports 16 byte CAS, which is
# necessary to avoid a dependency to libatomic
target_compile_options(${target} PRIVATE $<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-march=core2>)
endif()
endif()
# The LLVM backend is built with these defines on most 32-bit platforms,
# llvm/llvm-project@66395c9, which can cause incompatibilities with the Swift
# frontend if not built the same way.
if("${SWIFT_HOST_VARIANT_ARCH}" MATCHES "armv6|armv7|i686" AND
NOT (SWIFT_HOST_VARIANT_SDK STREQUAL "ANDROID" AND SWIFT_ANDROID_API_LEVEL LESS 24))
target_compile_definitions(${target} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:_LARGEFILE_SOURCE _FILE_OFFSET_BITS=64>)
endif()
target_compile_definitions(${target} PRIVATE
$<$<AND:$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>,$<BOOL:${SWIFT_ENABLE_SWIFT_IN_SWIFT}>>:SWIFT_ENABLE_SWIFT_IN_SWIFT>)
endfunction()
function(_add_host_variant_link_flags target)
_add_host_variant_c_compile_link_flags(${target})
if(SWIFT_HOST_VARIANT_SDK STREQUAL "LINUX")
target_link_libraries(${target} PRIVATE
pthread
dl)
if("${SWIFT_HOST_VARIANT_ARCH}" MATCHES "armv5|armv6|armv7|i686")
target_link_libraries(${target} PRIVATE atomic)
endif()
elseif(SWIFT_HOST_VARIANT_SDK STREQUAL "FREEBSD")
target_link_libraries(${target} PRIVATE
pthread)
elseif(SWIFT_HOST_VARIANT_SDK STREQUAL "CYGWIN")
# No extra libraries required.
elseif(SWIFT_HOST_VARIANT_SDK STREQUAL "WINDOWS")
# We don't need to add -nostdlib using MSVC or clang-cl, as MSVC and
# clang-cl rely on auto-linking entirely.
if(NOT SWIFT_COMPILER_IS_MSVC_LIKE)
# NOTE: we do not use "/MD" or "/MDd" and select the runtime via linker
# options. This causes conflicts.
target_link_options(${target} PRIVATE
-nostdlib)
endif()
swift_windows_lib_for_arch(${SWIFT_HOST_VARIANT_ARCH}
${SWIFT_HOST_VARIANT_ARCH}_LIB)
target_link_directories(${target} PRIVATE
${${SWIFT_HOST_VARIANT_ARCH}_LIB})
# NOTE(compnerd) workaround incorrectly extensioned import libraries from
# the Windows SDK on case sensitive file systems.
target_link_directories(${target} PRIVATE
${CMAKE_BINARY_DIR}/winsdk_lib_${SWIFT_HOST_VARIANT_ARCH}_symlinks)
elseif(SWIFT_HOST_VARIANT_SDK STREQUAL "HAIKU")
target_link_libraries(${target} PRIVATE
bsd)
target_link_options(${target} PRIVATE
"SHELL:-Xlinker -Bsymbolic")
elseif(SWIFT_HOST_VARIANT_SDK STREQUAL "ANDROID")
target_link_libraries(${target} PRIVATE
dl
log
# We need to add the math library, which is linked implicitly by libc++
m)
# link against the custom C++ library
swift_android_cxx_libraries_for_arch(${SWIFT_HOST_VARIANT_ARCH}
cxx_link_libraries)
target_link_libraries(${target} PRIVATE
${cxx_link_libraries})
else()
# If lto is enabled, we need to add the object path flag so that the LTO code
# generator leaves the intermediate object file in a place where it will not
# be touched. The reason why this must be done is that on OS X, debug info is
# left in object files. So if the object file is removed when we go to
# generate a dsym, the debug info is gone.
if (SWIFT_TOOLS_ENABLE_LTO)
target_link_options(${target} PRIVATE
"SHELL:-Xlinker -object_path_lto"
"SHELL:-Xlinker ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/${target}-${SWIFT_HOST_VARIANT_SDK}-${SWIFT_HOST_VARIANT_ARCH}-lto${CMAKE_C_OUTPUT_EXTENSION}")
endif()
endif()
if(NOT SWIFT_COMPILER_IS_MSVC_LIKE)
if(SWIFT_USE_LINKER)
target_link_options(${target} PRIVATE
$<$<LINK_LANGUAGE:CXX>:-fuse-ld=${SWIFT_USE_LINKER}$<$<STREQUAL:${CMAKE_HOST_SYSTEM_NAME},Windows>:.exe>>)
if (CMAKE_Swift_COMPILER)
target_link_options(${target} PRIVATE
$<$<LINK_LANGUAGE:Swift>:-use-ld=${SWIFT_USE_LINKER}$<$<STREQUAL:${CMAKE_HOST_SYSTEM_NAME},Windows>:.exe>>)
endif()
endif()
endif()
# Enable dead stripping. Portions of this logic were copied from llvm's
# `add_link_opts` function (which, perhaps, should have been used here in the
# first place, but at this point it's hard to say whether that's feasible).
#
# TODO: Evaluate/enable -f{function,data}-sections --gc-sections for bfd,
# gold, and lld.
if(NOT CMAKE_BUILD_TYPE STREQUAL "Debug" AND CMAKE_SYSTEM_NAME MATCHES Darwin)
if (NOT SWIFT_DISABLE_DEAD_STRIPPING)
# See rdar://48283130: This gives 6MB+ size reductions for swift and
# SourceKitService, and much larger size reductions for sil-opt etc.
target_link_options(${target} PRIVATE
"SHELL:-Xlinker -dead_strip")
endif()
endif()
if(SWIFT_LINKER_SUPPORTS_NO_WARN_DUPLICATE_LIBRARIES)
target_link_options(${target} PRIVATE
"SHELL:-Xlinker -no_warn_duplicate_libraries")
endif()
# Enable build IDs
if(SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_USE_BUILD_ID)
target_link_options(${target} PRIVATE
"SHELL:-Xlinker --build-id=sha1")
endif()
endfunction()
function(_add_swift_runtime_link_flags target relpath_to_lib_dir bootstrapping)
if(NOT BOOTSTRAPPING_MODE)
if (SWIFT_BUILD_SWIFT_SYNTAX)
set(ASRLF_BOOTSTRAPPING_MODE "HOSTTOOLS")
else()
return()
endif()
else()
set(ASRLF_BOOTSTRAPPING_MODE ${BOOTSTRAPPING_MODE})
endif()
# RPATH where Swift runtime can be found.
set(swift_runtime_rpath)
if(SWIFT_HOST_VARIANT_SDK IN_LIST SWIFT_DARWIN_PLATFORMS)
set(sdk_dir "${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_ARCH_${SWIFT_HOST_VARIANT_ARCH}_PATH}/usr/lib/swift")
# Note we only check this for bootstrapping, since you ought to
# be able to build using hosttools with the stdlib disabled.
if(ASRLF_BOOTSTRAPPING_MODE MATCHES "BOOTSTRAPPING.*" AND SWIFT_STDLIB_SUPPORT_BACK_DEPLOYMENT)
# HostCompatibilityLibs is defined as an interface library that
# does not generate any concrete build target
# (https://cmake.org/cmake/help/latest/command/add_library.html#interface-libraries)
# In order to specify a dependency to it using `add_dependencies`
# we need to manually "expand" its underlying targets
get_property(compatibility_libs
TARGET HostCompatibilityLibs
PROPERTY INTERFACE_LINK_LIBRARIES)
set(compatibility_libs_path
"${SWIFTLIB_DIR}/${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_LIB_SUBDIR}/${SWIFT_HOST_VARIANT_ARCH}")
endif()
# If we found a swift compiler and are going to use swift code in swift
# host side tools but link with clang, add the appropriate -L paths so we
# find all of the necessary swift libraries on Darwin.
if(ASRLF_BOOTSTRAPPING_MODE STREQUAL "HOSTTOOLS")
# Add in the toolchain directory so we can grab compatibility libraries
get_filename_component(TOOLCHAIN_BIN_DIR ${SWIFT_EXEC_FOR_SWIFT_MODULES} DIRECTORY)
get_filename_component(TOOLCHAIN_LIB_DIR "${TOOLCHAIN_BIN_DIR}/../lib/swift/${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_LIB_SUBDIR}" ABSOLUTE)
target_link_directories(${target} PUBLIC ${TOOLCHAIN_LIB_DIR})
# Add the SDK directory for the host platform.
target_link_directories(${target} PRIVATE "${sdk_dir}")
# Include the abi stable system stdlib in our rpath.
set(swift_runtime_rpath "/usr/lib/swift")
elseif(ASRLF_BOOTSTRAPPING_MODE STREQUAL "CROSSCOMPILE-WITH-HOSTLIBS")
# Intentionally don't add the lib dir of the cross-compiled compiler, so that
# the stdlib is not picked up from there, but from the SDK.
# This requires to explicitly add all the needed compatibility libraries. We
# can take them from the current build.
target_link_libraries(${target} PUBLIC HostCompatibilityLibs)
# Add the SDK directory for the host platform.
target_link_directories(${target} PRIVATE "${sdk_dir}")
# A backup in case the toolchain doesn't have one of the compatibility libraries.
target_link_directories(${target} PRIVATE
"${SWIFTLIB_DIR}/${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_LIB_SUBDIR}")
# Include the abi stable system stdlib in our rpath.
set(swift_runtime_rpath "/usr/lib/swift")
elseif(ASRLF_BOOTSTRAPPING_MODE STREQUAL "BOOTSTRAPPING-WITH-HOSTLIBS")
# Add the SDK directory for the host platform.
target_link_directories(${target} PRIVATE "${sdk_dir}")
if(compatibility_libs_path)
# A backup in case the toolchain doesn't have one of the compatibility libraries.
# We are using on purpose `add_dependencies` instead of `target_link_libraries`,
# since we want to ensure the linker is pulling the matching archives
# only if needed
target_link_directories(${target} PRIVATE "${compatibility_libs_path}")
add_dependencies(${target} ${compatibility_libs})
endif()
# Include the abi stable system stdlib in our rpath.
set(swift_runtime_rpath "/usr/lib/swift")
elseif(ASRLF_BOOTSTRAPPING_MODE STREQUAL "BOOTSTRAPPING")
# At build time link against the built swift libraries from the
# previous bootstrapping stage.
get_bootstrapping_swift_lib_dir(bs_lib_dir "${bootstrapping}")
target_link_directories(${target} PRIVATE ${bs_lib_dir})
if(compatibility_libs_path)
# Required to pick up the built libswiftCompatibility<n>.a libraries
# We are using on purpose `add_dependencies` instead of `target_link_libraries`,
# since we want to ensure the linker is pulling the matching archives
# only if needed
target_link_directories(${target} PRIVATE "${compatibility_libs_path}")
add_dependencies(${target} ${compatibility_libs})
endif()
# At runtime link against the built swift libraries from the current
# bootstrapping stage.
set(swift_runtime_rpath "@loader_path/${relpath_to_lib_dir}/swift/${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_LIB_SUBDIR}")
else()
message(FATAL_ERROR "Unknown BOOTSTRAPPING_MODE '${ASRLF_BOOTSTRAPPING_MODE}'")
endif()
# Workaround for a linker crash related to autolinking: rdar://77839981
set_property(TARGET ${target} APPEND_STRING PROPERTY
LINK_FLAGS " -lobjc ")
elseif(SWIFT_HOST_VARIANT_SDK MATCHES "LINUX|ANDROID|OPENBSD|FREEBSD|WINDOWS")
set(swiftrt "swiftImageRegistrationObject${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_OBJECT_FORMAT}-${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_LIB_SUBDIR}-${SWIFT_HOST_VARIANT_ARCH}")
if(ASRLF_BOOTSTRAPPING_MODE MATCHES "HOSTTOOLS|CROSSCOMPILE")
if(ASRLF_BOOTSTRAPPING_MODE STREQUAL "HOSTTOOLS")
# At build time and run time, link against the swift libraries in the
# installed host toolchain.
if(SWIFT_PATH_TO_SWIFT_SDK)
set(swift_dir "${SWIFT_PATH_TO_SWIFT_SDK}/usr")
else()
get_filename_component(swift_bin_dir ${SWIFT_EXEC_FOR_SWIFT_MODULES} DIRECTORY)
get_filename_component(swift_dir ${swift_bin_dir} DIRECTORY)
# Detect and handle swiftly-managed hosts.
if(swift_bin_dir MATCHES ".*/swiftly/bin")
execute_process(COMMAND swiftly use --print-location
OUTPUT_VARIABLE swiftly_dir
ERROR_VARIABLE err)
if(err)
message(SEND_ERROR "Failed to find swiftly Swift compiler")
endif()
string(STRIP "${swiftly_dir}" swiftly_dir)
set(swift_dir "${swiftly_dir}/usr")
endif()
endif()
set(host_lib_dir "${swift_dir}/lib/swift/${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_LIB_SUBDIR}")
else()
set(host_lib_dir "${SWIFTLIB_DIR}/${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_LIB_SUBDIR}")
endif()
set(host_lib_arch_dir "${host_lib_dir}/${SWIFT_HOST_VARIANT_ARCH}")
set(swiftrt "${host_lib_arch_dir}/swiftrt${CMAKE_C_OUTPUT_EXTENSION}")
target_link_libraries(${target} PRIVATE ${swiftrt})
target_link_libraries(${target} PRIVATE "swiftCore")
target_link_directories(${target} PRIVATE ${host_lib_dir})
target_link_directories(${target} PRIVATE ${host_lib_arch_dir})
# At runtime, use swiftCore in the current toolchain.
# For building stdlib, LD_LIBRARY_PATH will be set to builder's stdlib
# FIXME: This assumes the ABI hasn't changed since the builder.
set(swift_runtime_rpath "$ORIGIN/${relpath_to_lib_dir}/swift/${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_LIB_SUBDIR}")
elseif(ASRLF_BOOTSTRAPPING_MODE STREQUAL "BOOTSTRAPPING")
# At build time link against the built swift libraries from the
# previous bootstrapping stage.
if (NOT "${bootstrapping}" STREQUAL "0")
get_bootstrapping_swift_lib_dir(bs_lib_dir "${bootstrapping}")
target_link_directories(${target} PRIVATE ${bs_lib_dir})
target_link_libraries(${target} PRIVATE ${swiftrt})
target_link_libraries(${target} PRIVATE "swiftCore")
endif()
# At runtime link against the built swift libraries from the current
# bootstrapping stage.
set(swift_runtime_rpath "$ORIGIN/${relpath_to_lib_dir}/swift/${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_LIB_SUBDIR}")
elseif(ASRLF_BOOTSTRAPPING_MODE STREQUAL "BOOTSTRAPPING-WITH-HOSTLIBS")
message(FATAL_ERROR "BOOTSTRAPPING_MODE 'BOOTSTRAPPING-WITH-HOSTLIBS' not supported on Linux")
else()
message(FATAL_ERROR "Unknown BOOTSTRAPPING_MODE '${ASRLF_BOOTSTRAPPING_MODE}'")
endif()
else()
target_link_directories(${target} PRIVATE
${SWIFT_PATH_TO_SWIFT_SDK}/usr/lib/swift/${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_LIB_SUBDIR}/${SWIFT_HOST_VARIANT_ARCH})
endif()
if(SWIFT_BUILD_SWIFT_SYNTAX)
# For the "end step" of bootstrapping configurations, we need to be
# able to fall back to the SDK directory for libswiftCore et al.
if (BOOTSTRAPPING_MODE MATCHES "BOOTSTRAPPING.*")
if (NOT "${bootstrapping}" STREQUAL "1")
if(SWIFT_HOST_VARIANT_SDK IN_LIST SWIFT_DARWIN_PLATFORMS)
target_link_directories(${target} PRIVATE "${sdk_dir}")
# Include the abi stable system stdlib in our rpath.
set(swift_runtime_rpath "/usr/lib/swift")
# Add in the toolchain directory so we can grab compatibility libraries
get_filename_component(TOOLCHAIN_BIN_DIR ${SWIFT_EXEC_FOR_SWIFT_MODULES} DIRECTORY)
get_filename_component(TOOLCHAIN_LIB_DIR "${TOOLCHAIN_BIN_DIR}/../lib/swift/${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_LIB_SUBDIR}" ABSOLUTE)
target_link_directories(${target} PUBLIC ${TOOLCHAIN_LIB_DIR})
else()
get_filename_component(swift_bin_dir ${SWIFT_EXEC_FOR_SWIFT_MODULES} DIRECTORY)
get_filename_component(swift_dir ${swift_bin_dir} DIRECTORY)
# Detect and handle swiftly-managed hosts.
if(swift_bin_dir MATCHES ".*/swiftly/bin")
execute_process(COMMAND swiftly use --print-location
OUTPUT_VARIABLE swiftly_dir
ERROR_VARIABLE err)
if(err)
message(SEND_ERROR "Failed to find swiftly Swift compiler")
endif()
string(STRIP "${swiftly_dir}" swiftly_dir)
set(swift_dir "${swiftly_dir}/usr")
endif()
set(host_lib_dir "${swift_dir}/lib/swift/${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_LIB_SUBDIR}")
target_link_directories(${target} PRIVATE ${host_lib_dir})
set(swift_runtime_rpath "${host_lib_dir}")
endif()
endif()
endif()
if(SWIFT_HOST_VARIANT_SDK IN_LIST SWIFT_DARWIN_PLATFORMS AND SWIFT_ALLOW_LINKING_SWIFT_CONTENT_IN_DARWIN_TOOLCHAIN)
get_filename_component(TOOLCHAIN_BIN_DIR ${CMAKE_Swift_COMPILER} DIRECTORY)
get_filename_component(TOOLCHAIN_LIB_DIR "${TOOLCHAIN_BIN_DIR}/../lib/swift/${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_LIB_SUBDIR}" ABSOLUTE)
target_link_directories(${target} BEFORE PUBLIC ${TOOLCHAIN_LIB_DIR})
endif()
if(SWIFT_HOST_VARIANT_SDK MATCHES "LINUX|ANDROID|OPENBSD|FREEBSD" AND SWIFT_USE_LINKER STREQUAL "lld")
target_link_options(${target} PRIVATE "SHELL:-Xlinker -z -Xlinker nostart-stop-gc")
endif()
endif()
set_property(TARGET ${target} PROPERTY BUILD_WITH_INSTALL_RPATH YES)
set_property(TARGET ${target} APPEND PROPERTY INSTALL_RPATH "${swift_runtime_rpath}")
endfunction()
# Add a new Swift host library.
#
# Usage:
# add_swift_host_library(name
# [SHARED]
# [STATIC]
# [OBJECT]
# [LLVM_LINK_COMPONENTS comp1 ...]
# source1 [source2 source3 ...])
#
# name
# Name of the library (e.g., swiftParse).
#
# SHARED
# Build a shared library.
#
# STATIC
# Build a static library.
#
# OBJECT
# Build an object library
#
# LLVM_LINK_COMPONENTS
# LLVM components this library depends on.
#
# source1 ...
# Sources to add into this library.
function(add_swift_host_library name)
set(options
SHARED
STATIC
OBJECT
HAS_SWIFT_MODULES)
set(single_parameter_options)
set(multiple_parameter_options
LLVM_LINK_COMPONENTS)
cmake_parse_arguments(ASHL
"${options}"
"${single_parameter_options}"
"${multiple_parameter_options}"
${ARGN})
set(ASHL_SOURCES ${ASHL_UNPARSED_ARGUMENTS})
translate_flags(ASHL "${options}")
# Once the new Swift parser is linked, everything has Swift modules.
if (SWIFT_BUILD_SWIFT_SYNTAX AND ASHL_SHARED)
set(ASHL_HAS_SWIFT_MODULES ON)
endif()
if(NOT ASHL_SHARED AND NOT ASHL_STATIC AND NOT ASHL_OBJECT)
message(FATAL_ERROR "One of SHARED/STATIC/OBJECT must be specified")
endif()
if(NOT ASHL_SHARED AND ASHL_HAS_SWIFT_MODULES)
message(WARNING "Ignoring HAS_SWIFT_MODULES; it's only for SHARED libraries")
endif()
# Using `support` llvm component ends up adding `-Xlinker /path/to/lib/libLLVMDemangle.a`
# to `LINK_FLAGS` but `libLLVMDemangle.a` is not added as an input to the linking ninja statement.
# As a workaround, include `demangle` component whenever `support` is mentioned.
if("support" IN_LIST ASHL_LLVM_LINK_COMPONENTS)
list(APPEND ASHL_LLVM_LINK_COMPONENTS "demangle")
endif()
if(ASHL_SHARED)
set(libkind SHARED)
elseif(ASHL_STATIC)
set(libkind STATIC)
elseif(ASHL_OBJECT)
set(libkind OBJECT)
endif()
add_library(${name} ${libkind} ${ASHL_SOURCES})
target_link_directories(${name} PUBLIC "${CMAKE_LIBRARY_OUTPUT_DIRECTORY}")
# Respect LLVM_COMMON_DEPENDS if it is set.
#
# LLVM_COMMON_DEPENDS if a global variable set in ./lib that provides targets
# such as swift-syntax or tblgen that all LLVM/Swift based tools depend on. If
# we don't have it defined, then do not add the dependency since some parts of
# swift host tools do not interact with LLVM/Swift tools and do not define
# LLVM_COMMON_DEPENDS.
if (LLVM_COMMON_DEPENDS)
add_dependencies(${name} ${LLVM_COMMON_DEPENDS})
endif()
llvm_update_compile_flags(${name})
swift_common_llvm_config(${name} ${ASHL_LLVM_LINK_COMPONENTS})
set_output_directory(${name}
BINARY_DIR ${SWIFT_RUNTIME_OUTPUT_INTDIR}
LIBRARY_DIR ${SWIFT_LIBRARY_OUTPUT_INTDIR})
if(SWIFT_HOST_VARIANT_SDK IN_LIST SWIFT_DARWIN_PLATFORMS)
set_target_properties(${name} PROPERTIES
INSTALL_NAME_DIR "@rpath")
elseif(SWIFT_HOST_VARIANT_SDK STREQUAL "LINUX")
set_target_properties(${name} PROPERTIES
INSTALL_RPATH "$ORIGIN")
elseif(SWIFT_HOST_VARIANT_SDK STREQUAL "CYGWIN")
set_target_properties(${name} PROPERTIES
INSTALL_RPATH "$ORIGIN:/usr/lib/swift/cygwin")
elseif(SWIFT_HOST_VARIANT_SDK STREQUAL "ANDROID")
set_target_properties(${name} PROPERTIES
INSTALL_RPATH "$ORIGIN")
endif()
set_target_properties(${name} PROPERTIES
BUILD_WITH_INSTALL_RPATH YES
FOLDER "Swift libraries")
_add_host_variant_c_compile_flags(${name})
_add_host_variant_link_flags(${name})
_add_host_variant_c_compile_link_flags(${name})
_set_target_prefix_and_suffix(${name} "${libkind}" "${SWIFT_HOST_VARIANT_SDK}")
if (ASHL_SHARED AND ASHL_HAS_SWIFT_MODULES)
_add_swift_runtime_link_flags(${name} "." "")
endif()
# Set compilation and link flags.
if(SWIFT_HOST_VARIANT_SDK STREQUAL "WINDOWS")
swift_windows_include_for_arch(${SWIFT_HOST_VARIANT_ARCH}
${SWIFT_HOST_VARIANT_ARCH}_INCLUDE)
target_include_directories(${name} SYSTEM PRIVATE
${${SWIFT_HOST_VARIANT_ARCH}_INCLUDE})
if(libkind STREQUAL "SHARED")
target_compile_definitions(${name} PRIVATE
_WINDLL)
endif()
if(NOT CMAKE_C_COMPILER_ID STREQUAL "MSVC")
swift_windows_get_sdk_vfs_overlay(ASHL_VFS_OVERLAY)
# Both clang and clang-cl on Windows set CMAKE_C_SIMULATE_ID to MSVC.
# We are using CMAKE_C_COMPILER_FRONTEND_VARIANT to detect the correct
# way to pass -Xclang arguments.
if ("${CMAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "MSVC")
target_compile_options(${name} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX>:SHELL:/clang:-Xclang /clang:-ivfsoverlay /clang:-Xclang /clang:${ASHL_VFS_OVERLAY}>)
else()
target_compile_options(${name} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:"SHELL:-Xclang -ivfsoverlay -Xclang ${ASHL_VFS_OVERLAY}">)
# MSVC doesn't support -Xclang. We don't need to manually specify
# the dependent libraries as `cl`/`clang-cl` does so.
target_compile_options(${name} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:"SHELL:-Xclang --dependent-lib=oldnames">
# TODO(compnerd) handle /MT, /MTd
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:"SHELL:-Xclang --dependent-lib=msvcrt$<$<CONFIG:Debug>:d>">
)
endif()
endif()
set_target_properties(${name} PROPERTIES
NO_SONAME YES)
endif()
set_target_properties(${name} PROPERTIES LINKER_LANGUAGE CXX)
if(SWIFT_HOST_VARIANT_SDK IN_LIST SWIFT_DARWIN_PLATFORMS)
target_link_options(${name} PRIVATE
"LINKER:-compatibility_version,1")
if(SWIFT_COMPILER_VERSION)
target_link_options(${name} PRIVATE
"LINKER:-current_version,${SWIFT_COMPILER_VERSION}")
endif()
# For now turn off on Darwin swift targets, debug info if we are compiling a static
# library and set up an rpath so that if someone works around this by using
# shared libraries that in the short term we can find shared libraries.
if (ASHL_STATIC)
target_compile_options(${name} PRIVATE $<$<COMPILE_LANGUAGE:Swift>:-gnone>)
endif()
endif()
# If we are compiling in release or release with deb info, compile swift code
# with -cross-module-optimization enabled.
target_compile_options(${name} PRIVATE
$<$<AND:$<COMPILE_LANGUAGE:Swift>,$<OR:$<CONFIG:Release>,$<CONFIG:RelWithDebInfo>>>:-cross-module-optimization>)
add_dependencies(dev ${name})
if(NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
swift_install_in_component(TARGETS ${name}
ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX} COMPONENT dev
LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX} COMPONENT dev
RUNTIME DESTINATION bin COMPONENT dev)
endif()
swift_is_installing_component(dev is_installing)
if(NOT is_installing)
set_property(GLOBAL APPEND PROPERTY SWIFT_BUILDTREE_EXPORTS ${name})
else()
set_property(GLOBAL APPEND PROPERTY SWIFT_EXPORTS ${name})
endif()
endfunction()
macro(add_swift_tool_subdirectory name)
add_llvm_subdirectory(SWIFT TOOL ${name})
endmacro()
macro(add_swift_lib_subdirectory name)
add_llvm_subdirectory(SWIFT LIB ${name})
endmacro()
# Add a new Swift host executable.
#
# Usage:
# add_swift_host_tool(name
# [HAS_SWIFT_MODULES | DOES_NOT_USE_SWIFT]
# [THINLTO_LD64_ADD_FLTO_CODEGEN_ONLY]
#
# [BOOTSTRAPPING 0|1]
# [SWIFT_COMPONENT component]
# [LLVM_LINK_COMPONENTS comp1 ...]
# source1 [source2 source3 ...])
#
# name
# Name of the executable (e.g., swift-frontend).
#
# HAS_SWIFT_MODULES
# Whether to link with SwiftCompilerSources library
#
# DOES_NOT_USE_SWIFT
# Do not link with swift runtime
#
# THINLTO_LD64_ADD_FLTO_CODEGEN_ONLY
# Opt-out of LLVM IR optimizations when linking ThinLTO with ld64
#
# BOOTSTRAPPING
# Bootstrapping stage.
#
# SWIFT_COMPONENT
# Installation component where this tool belongs to.
#
# LLVM_LINK_COMPONENTS
# LLVM components this library depends on.
#
# source1 ...
# Sources to add into this executable.
function(add_swift_host_tool executable)
set(options HAS_SWIFT_MODULES DOES_NOT_USE_SWIFT THINLTO_LD64_ADD_FLTO_CODEGEN_ONLY)
set(single_parameter_options SWIFT_COMPONENT BOOTSTRAPPING)
set(multiple_parameter_options LLVM_LINK_COMPONENTS)
cmake_parse_arguments(ASHT
"${options}"
"${single_parameter_options}"
"${multiple_parameter_options}"
${ARGN})
precondition(ASHT_SWIFT_COMPONENT
MESSAGE "Swift Component is required to add a host tool")
# Using `support` llvm component ends up adding `-Xlinker /path/to/lib/libLLVMDemangle.a`
# to `LINK_FLAGS` but `libLLVMDemangle.a` is not added as an input to the linking ninja statement.
# As a workaround, include `demangle` component whenever `support` is mentioned.
if("support" IN_LIST ASHT_LLVM_LINK_COMPONENTS)
list(APPEND ASHT_LLVM_LINK_COMPONENTS "demangle")
endif()
add_executable(${executable} ${ASHT_UNPARSED_ARGUMENTS})
_add_host_variant_c_compile_flags(${executable})
_add_host_variant_link_flags(${executable})
_add_host_variant_c_compile_link_flags(${executable})
# Force executables linker language to be CXX so that we do not link using the
# host toolchain swiftc.
set_target_properties(${executable} PROPERTIES LINKER_LANGUAGE CXX)
# Respect LLVM_COMMON_DEPENDS if it is set.
#
# LLVM_COMMON_DEPENDS if a global variable set in ./lib that provides targets
# such as swift-syntax or tblgen that all LLVM/Swift based tools depend on. If
# we don't have it defined, then do not add the dependency since some parts of
# swift host tools do not interact with LLVM/Swift tools and do not define
# LLVM_COMMON_DEPENDS.
if (LLVM_COMMON_DEPENDS)
add_dependencies(${executable} ${LLVM_COMMON_DEPENDS})
endif()
if(NOT "${ASHT_BOOTSTRAPPING}" STREQUAL "")
# Strip the "-bootstrapping<n>" suffix from the target name to get the base
# executable name.
string(REGEX REPLACE "-bootstrapping.*" "" executable_filename ${executable})
set_target_properties(${executable}
PROPERTIES OUTPUT_NAME ${executable_filename})
endif()
set_target_properties(${executable} PROPERTIES
FOLDER "Swift executables")
if(SWIFT_PARALLEL_LINK_JOBS)
set_target_properties(${executable} PROPERTIES
JOB_POOL_LINK swift_link_job_pool)
endif()
# Once the new Swift parser is linked in, every host tool has Swift modules.
if (SWIFT_BUILD_SWIFT_SYNTAX AND NOT ASHT_DOES_NOT_USE_SWIFT)
set(ASHT_HAS_SWIFT_MODULES ON)
endif()
if (ASHT_HAS_SWIFT_MODULES)
_add_swift_runtime_link_flags(${executable} "../lib" "${ASHT_BOOTSTRAPPING}")
endif()
llvm_update_compile_flags(${executable})
swift_common_llvm_config(${executable} ${ASHT_LLVM_LINK_COMPONENTS})
get_bootstrapping_path(out_bin_dir
${SWIFT_RUNTIME_OUTPUT_INTDIR} "${ASHT_BOOTSTRAPPING}")
get_bootstrapping_path(out_lib_dir
${SWIFT_LIBRARY_OUTPUT_INTDIR} "${ASHT_BOOTSTRAPPING}")
set_output_directory(${executable}
BINARY_DIR ${out_bin_dir}
LIBRARY_DIR ${out_lib_dir})
if(SWIFT_HOST_VARIANT_SDK STREQUAL "WINDOWS")
swift_windows_include_for_arch(${SWIFT_HOST_VARIANT_ARCH}
${SWIFT_HOST_VARIANT_ARCH}_INCLUDE)
target_include_directories(${executable} SYSTEM PRIVATE
${${SWIFT_HOST_VARIANT_ARCH}_INCLUDE})
# On Windows both clang-cl and clang simulate MSVC.
# We are using CMAKE_C_COMPILER_FRONTEND_VARIANT to distinguish
# clang from clang-cl.
if(NOT "${CMAKE_C_COMPILER_ID}" STREQUAL "MSVC" AND NOT "${CMAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "MSVC")
# MSVC doesn't support -Xclang. We don't need to manually specify
# the dependent libraries as `cl`/`clang-cl` does so.
target_compile_options(${executable} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:"SHELL:-Xclang --dependent-lib=oldnames">
# TODO(compnerd) handle /MT, /MTd
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:"SHELL:-Xclang --dependent-lib=msvcrt$<$<CONFIG:Debug>:d>">
)
endif()
endif()
# Opt-out of OpenBSD BTCFI if instructed where it is enforced by default.
if(SWIFT_HOST_VARIANT_SDK STREQUAL "OPENBSD" AND SWIFT_HOST_VARIANT_ARCH MATCHES "aarch64|x86_64" AND NOT SWIFT_OPENBSD_BTCFI)
target_link_options(${executable} PRIVATE "LINKER:-z,nobtcfi")
endif()
if(SWIFT_BUILD_SWIFT_SYNTAX)
set(extra_relative_rpath "")
if(NOT "${ASHT_BOOTSTRAPPING}" STREQUAL "")
if(executable MATCHES "-bootstrapping")
set(extra_relative_rpath "../")
endif()
endif()
if(SWIFT_HOST_VARIANT_SDK IN_LIST SWIFT_DARWIN_PLATFORMS)
set_property(
TARGET ${executable}
APPEND PROPERTY INSTALL_RPATH
"@executable_path/../${extra_relative_rpath}lib/swift/host/compiler")
else()
set_property(
TARGET ${executable}
APPEND PROPERTY INSTALL_RPATH
"$ORIGIN/../${extra_relative_rpath}lib/swift/host/compiler")
endif()
endif()
if(ASHT_THINLTO_LD64_ADD_FLTO_CODEGEN_ONLY)
string(CONCAT lto_codegen_only_link_options
"$<"
"$<AND:"
"$<BOOL:${LLVM_LINKER_IS_LD64}>,"
"$<BOOL:${SWIFT_TOOLS_LD64_LTO_CODEGEN_ONLY_FOR_SUPPORTING_TARGETS}>,"
"$<STREQUAL:${SWIFT_TOOLS_ENABLE_LTO},thin>"
">:"
"LINKER:-flto-codegen-only"
">")
target_link_options(${executable} PRIVATE "${lto_codegen_only_link_options}")
endif()
if(NOT ASHT_SWIFT_COMPONENT STREQUAL "no_component")
add_dependencies(${ASHT_SWIFT_COMPONENT} ${executable})
swift_install_in_component(TARGETS ${executable}
RUNTIME
DESTINATION bin
COMPONENT ${ASHT_SWIFT_COMPONENT}
)
swift_is_installing_component(${ASHT_SWIFT_COMPONENT} is_installing)
endif()
if(NOT is_installing)
set_property(GLOBAL APPEND PROPERTY SWIFT_BUILDTREE_EXPORTS ${executable})
else()
set_property(GLOBAL APPEND PROPERTY SWIFT_EXPORTS ${executable})
endif()
endfunction()
# This declares a swift host tool that links with libfuzzer.
function(add_swift_fuzzer_host_tool executable)
# First create our target. We do not actually parse the argument since we do
# not care about the arguments, we just pass them all through to
# add_swift_host_tool.
add_swift_host_tool(${executable} ${ARGN})
# Then make sure that we pass the -fsanitize=fuzzer flag both on the cflags
# and cxx flags line.
target_compile_options(${executable} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:-fsanitize=fuzzer>
$<$<COMPILE_LANGUAGE:Swift>:-sanitize=fuzzer>)
target_link_libraries(${executable} PRIVATE "-fsanitize=fuzzer")
endfunction()
macro(add_swift_tool_symlink name dest component)
llvm_add_tool_symlink(SWIFT ${name} ${dest} ALWAYS_GENERATE)
llvm_install_symlink(SWIFT ${name} ${dest} ALWAYS_GENERATE COMPONENT ${component})
endmacro()
# Declare that files in this library are built with LLVM's support
# libraries available.
function(set_swift_llvm_is_available name)
target_compile_definitions(${name} PRIVATE
$<$<COMPILE_LANGUAGE:C,CXX,OBJC,OBJCXX>:SWIFT_LLVM_SUPPORT_IS_AVAILABLE>)
endfunction()
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