llvm-project/clang/CMakeLists.txt

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cmake_minimum_required(VERSION 3.13.4)
# If we are not building as a part of LLVM, build Clang as an
# standalone project, using LLVM as an external library:
if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
project(Clang)
set(CLANG_BUILT_STANDALONE TRUE)
endif()
# Must go below project(..)
include(GNUInstallDirs)
if(CLANG_BUILT_STANDALONE)
set(CMAKE_CXX_STANDARD 14 CACHE STRING "C++ standard to conform to")
set(CMAKE_CXX_STANDARD_REQUIRED YES)
set(CMAKE_CXX_EXTENSIONS NO)
# Rely on llvm-config.
set(LLVM_CONFIG_OUTPUT)
if(LLVM_CONFIG)
set (LLVM_CONFIG_FOUND 1)
message(STATUS "Found LLVM_CONFIG as ${LLVM_CONFIG}")
message(DEPRECATION "Using llvm-config to detect the LLVM installation is \
deprecated. The installed cmake files should be used \
instead. CMake should be able to detect your LLVM install \
automatically, but you can also use LLVM_DIR to specify \
the path containing LLVMConfig.cmake.")
set(CONFIG_COMMAND ${LLVM_CONFIG}
"--includedir"
"--prefix"
"--src-root"
"--cmakedir"
"--bindir"
"--libdir"
"--assertion-mode"
)
execute_process(
COMMAND ${CONFIG_COMMAND}
RESULT_VARIABLE HAD_ERROR
OUTPUT_VARIABLE LLVM_CONFIG_OUTPUT
)
if(NOT HAD_ERROR)
string(REGEX REPLACE
"[ \t]*[\r\n]+[ \t]*" ";"
LLVM_CONFIG_OUTPUT ${LLVM_CONFIG_OUTPUT})
else()
string(REPLACE ";" " " CONFIG_COMMAND_STR "${CONFIG_COMMAND}")
message(STATUS "${CONFIG_COMMAND_STR}")
message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}")
endif()
list(GET LLVM_CONFIG_OUTPUT 0 MAIN_INCLUDE_DIR)
list(GET LLVM_CONFIG_OUTPUT 1 LLVM_OBJ_ROOT)
list(GET LLVM_CONFIG_OUTPUT 2 MAIN_SRC_DIR)
list(GET LLVM_CONFIG_OUTPUT 3 LLVM_CONFIG_CMAKE_DIR)
list(GET LLVM_CONFIG_OUTPUT 4 TOOLS_BINARY_DIR)
list(GET LLVM_CONFIG_OUTPUT 5 LIBRARY_DIR)
list(GET LLVM_CONFIG_OUTPUT 6 ENABLE_ASSERTIONS)
# Normalize LLVM_CMAKE_DIR. --cmakedir might contain backslashes.
# CMake assumes slashes as PATH.
file(TO_CMAKE_PATH ${LLVM_CONFIG_CMAKE_DIR} LLVM_CMAKE_DIR)
endif()
if(NOT MSVC_IDE)
set(LLVM_ENABLE_ASSERTIONS ${ENABLE_ASSERTIONS}
CACHE BOOL "Enable assertions")
# Assertions should follow llvm-config's.
mark_as_advanced(LLVM_ENABLE_ASSERTIONS)
endif()
find_package(LLVM REQUIRED HINTS "${LLVM_CMAKE_DIR}")
list(APPEND CMAKE_MODULE_PATH ${LLVM_DIR})
# We can't check LLVM_CONFIG here, because find_package(LLVM ...) also sets
# LLVM_CONFIG.
if (NOT LLVM_CONFIG_FOUND)
# Pull values from LLVMConfig.cmake. We can drop this once the llvm-config
# path is removed.
set(MAIN_INCLUDE_DIR ${LLVM_INCLUDE_DIR})
set(LLVM_OBJ_DIR ${LLVM_BINARY_DIR})
set(TOOLS_BINARY_DIR ${LLVM_TOOLS_BINARY_DIR})
set(LIBRARY_DIR ${LLVM_LIBRARY_DIR})
endif()
set(LLVM_MAIN_INCLUDE_DIR ${MAIN_INCLUDE_DIR} CACHE PATH "Path to llvm/include")
set(LLVM_BINARY_DIR ${LLVM_OBJ_ROOT} CACHE PATH "Path to LLVM build tree")
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_LIBRARY_DIR ${LIBRARY_DIR} CACHE PATH "Path to llvm/lib")
find_program(LLVM_TABLEGEN_EXE "llvm-tblgen" ${LLVM_TOOLS_BINARY_DIR}
NO_DEFAULT_PATH)
# They are used as destination of target generators.
set(LLVM_RUNTIME_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/bin)
set(LLVM_LIBRARY_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX})
if(WIN32 OR CYGWIN)
# DLL platform -- put DLLs into bin.
set(LLVM_SHLIB_OUTPUT_INTDIR ${LLVM_RUNTIME_OUTPUT_INTDIR})
else()
set(LLVM_SHLIB_OUTPUT_INTDIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
endif()
option(LLVM_INSTALL_TOOLCHAIN_ONLY
"Only include toolchain files in the 'install' target." OFF)
option(LLVM_FORCE_USE_OLD_HOST_TOOLCHAIN
"Set to ON to force using an old, unsupported host toolchain." OFF)
option(CLANG_ENABLE_BOOTSTRAP "Generate the clang bootstrap target" OFF)
option(LLVM_ENABLE_LIBXML2 "Use libxml2 if available." ON)
include(AddLLVM)
include(TableGen)
include(HandleLLVMOptions)
include(VersionFromVCS)
include(GetErrcMessages)
include(LLVMDistributionSupport)
set(PACKAGE_VERSION "${LLVM_PACKAGE_VERSION}")
set(BUG_REPORT_URL "${LLVM_PACKAGE_BUGREPORT}" CACHE STRING
"Default URL where bug reports are to be submitted.")
if (NOT DEFINED LLVM_INCLUDE_TESTS)
set(LLVM_INCLUDE_TESTS ON)
endif()
include_directories("${LLVM_BINARY_DIR}/include" "${LLVM_MAIN_INCLUDE_DIR}")
link_directories("${LLVM_LIBRARY_DIR}")
set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin )
set( CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} )
set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} )
if(LLVM_INCLUDE_TESTS)
find_package(Python3 ${LLVM_MINIMUM_PYTHON_VERSION} REQUIRED
COMPONENTS Interpreter)
# Check prebuilt llvm/utils.
if(EXISTS ${LLVM_TOOLS_BINARY_DIR}/FileCheck${CMAKE_EXECUTABLE_SUFFIX}
AND EXISTS ${LLVM_TOOLS_BINARY_DIR}/count${CMAKE_EXECUTABLE_SUFFIX}
AND EXISTS ${LLVM_TOOLS_BINARY_DIR}/not${CMAKE_EXECUTABLE_SUFFIX})
set(LLVM_UTILS_PROVIDED ON)
endif()
if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py)
# Note: path not really used, except for checking if lit was found
set(LLVM_LIT ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py)
if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/llvm-lit)
add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/llvm-lit utils/llvm-lit)
endif()
if(NOT LLVM_UTILS_PROVIDED)
add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/FileCheck utils/FileCheck)
add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/count utils/count)
add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/not utils/not)
set(LLVM_UTILS_PROVIDED ON)
set(CLANG_TEST_DEPS FileCheck count not)
endif()
set(UNITTEST_DIR ${LLVM_MAIN_SRC_DIR}/utils/unittest)
if(EXISTS ${UNITTEST_DIR}/googletest/include/gtest/gtest.h
AND NOT EXISTS ${LLVM_LIBRARY_DIR}/${CMAKE_STATIC_LIBRARY_PREFIX}gtest${CMAKE_STATIC_LIBRARY_SUFFIX}
AND EXISTS ${UNITTEST_DIR}/CMakeLists.txt)
add_subdirectory(${UNITTEST_DIR} utils/unittest)
endif()
else()
# Seek installed Lit.
find_program(LLVM_LIT
NAMES llvm-lit lit.py lit
PATHS "${LLVM_MAIN_SRC_DIR}/utils/lit"
DOC "Path to lit.py")
endif()
if(LLVM_LIT)
# Define the default arguments to use with 'lit', and an option for the user
# to override.
set(LIT_ARGS_DEFAULT "-sv")
if (MSVC OR XCODE)
set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar")
endif()
set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit")
get_errc_messages(LLVM_LIT_ERRC_MESSAGES)
# On Win32 hosts, provide an option to specify the path to the GnuWin32 tools.
if( WIN32 AND NOT CYGWIN )
set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools")
endif()
else()
set(LLVM_INCLUDE_TESTS OFF)
endif()
endif()
set(BACKEND_PACKAGE_STRING "LLVM ${LLVM_PACKAGE_VERSION}")
else()
set(BACKEND_PACKAGE_STRING "${PACKAGE_STRING}")
endif() # standalone
if(NOT DEFINED LLVM_COMMON_CMAKE_UTILS)
set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake)
endif()
# Make sure that our source directory is on the current cmake module path so that
# we can include cmake files from this directory.
list(INSERT CMAKE_MODULE_PATH 0
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules"
"${LLVM_COMMON_CMAKE_UTILS}/Modules"
)
if(LLVM_ENABLE_LIBXML2)
# Don't look for libxml if we're using MSan, since uninstrumented third party
# code may call MSan interceptors like strlen, leading to false positives.
if(NOT LLVM_USE_SANITIZER MATCHES "Memory.*")
set (LIBXML2_FOUND 0)
find_package(LibXml2 2.5.3 QUIET)
if (LIBXML2_FOUND)
set(CLANG_HAVE_LIBXML 1)
endif()
endif()
endif()
include(CheckIncludeFile)
check_include_file(sys/resource.h CLANG_HAVE_RLIMITS)
set(CLANG_RESOURCE_DIR "" CACHE STRING
"Relative directory from the Clang binary to its resource files.")
set(C_INCLUDE_DIRS "" CACHE STRING
"Colon separated list of directories clang will search for headers.")
set(GCC_INSTALL_PREFIX "" CACHE PATH "Directory where gcc is installed." )
set(DEFAULT_SYSROOT "" CACHE STRING
"Default <path> to all compiler invocations for --sysroot=<path>." )
set(ENABLE_LINKER_BUILD_ID OFF CACHE BOOL "pass --build-id to ld")
set(ENABLE_X86_RELAX_RELOCATIONS ON CACHE BOOL
"enable x86 relax relocations by default")
set(CLANG_SPAWN_CC1 OFF CACHE BOOL
"Whether clang should use a new process for the CC1 invocation")
option(CLANG_DEFAULT_PIE_ON_LINUX "Default to -fPIE and -pie on Linux" OFF)
# TODO: verify the values against LangStandards.def?
set(CLANG_DEFAULT_STD_C "" CACHE STRING
"Default standard to use for C/ObjC code (IDENT from LangStandards.def, empty for platform default)")
set(CLANG_DEFAULT_STD_CXX "" CACHE STRING
"Default standard to use for C++/ObjC++ code (IDENT from LangStandards.def, empty for platform default)")
set(CLANG_DEFAULT_LINKER "" CACHE STRING
"Default linker to use (linker name or absolute path, empty for platform default)")
set(CLANG_DEFAULT_CXX_STDLIB "" CACHE STRING
"Default C++ stdlib to use (\"libstdc++\" or \"libc++\", empty for platform default")
if (NOT(CLANG_DEFAULT_CXX_STDLIB STREQUAL "" OR
CLANG_DEFAULT_CXX_STDLIB STREQUAL "libstdc++" OR
CLANG_DEFAULT_CXX_STDLIB STREQUAL "libc++"))
message(WARNING "Resetting default C++ stdlib to use platform default")
set(CLANG_DEFAULT_CXX_STDLIB "" CACHE STRING
"Default C++ stdlib to use (\"libstdc++\" or \"libc++\", empty for platform default" FORCE)
endif()
set(CLANG_DEFAULT_RTLIB "" CACHE STRING
"Default runtime library to use (\"libgcc\" or \"compiler-rt\", empty for platform default)")
if (NOT(CLANG_DEFAULT_RTLIB STREQUAL "" OR
CLANG_DEFAULT_RTLIB STREQUAL "libgcc" OR
CLANG_DEFAULT_RTLIB STREQUAL "compiler-rt"))
message(WARNING "Resetting default rtlib to use platform default")
set(CLANG_DEFAULT_RTLIB "" CACHE STRING
"Default runtime library to use (\"libgcc\" or \"compiler-rt\", empty for platform default)" FORCE)
endif()
set(CLANG_DEFAULT_UNWINDLIB "" CACHE STRING
"Default unwind library to use (\"none\" \"libgcc\" or \"libunwind\", empty to match runtime library.)")
if (CLANG_DEFAULT_UNWINDLIB STREQUAL "")
if (CLANG_DEFAULT_RTLIB STREQUAL "libgcc")
set (CLANG_DEFAULT_UNWINDLIB "libgcc" CACHE STRING "" FORCE)
endif()
endif()
if (NOT(CLANG_DEFAULT_UNWINDLIB STREQUAL "" OR
CLANG_DEFAULT_UNWINDLIB STREQUAL "none" OR
CLANG_DEFAULT_UNWINDLIB STREQUAL "libgcc" OR
CLANG_DEFAULT_UNWINDLIB STREQUAL "libunwind"))
message(WARNING "Resetting default unwindlib to use platform default")
set(CLANG_DEFAULT_UNWINDLIB "" CACHE STRING
"Default unwind library to use (\"none\" \"libgcc\" or \"libunwind\", empty to match runtime library.)" FORCE)
endif()
set(CLANG_DEFAULT_OBJCOPY "objcopy" CACHE STRING
"Default objcopy executable to use.")
set(CLANG_DEFAULT_OPENMP_RUNTIME "libomp" CACHE STRING
"Default OpenMP runtime used by -fopenmp.")
# OpenMP offloading requires at least sm_35 because we use shuffle instructions
# to generate efficient code for reductions and the atomicMax instruction on
# 64-bit integers in the implementation of conditional lastprivate.
set(CUDA_ARCH_FLAGS "sm_35")
# Try to find the highest Nvidia GPU architecture the system supports
if (NOT DEFINED CLANG_OPENMP_NVPTX_DEFAULT_ARCH)
find_package(CUDA QUIET)
if (CUDA_FOUND)
cuda_select_nvcc_arch_flags(CUDA_ARCH_FLAGS)
endif()
else()
set(CUDA_ARCH_FLAGS ${CLANG_OPENMP_NVPTX_DEFAULT_ARCH})
endif()
string(REGEX MATCH "sm_([0-9]+)" CUDA_ARCH_MATCH ${CUDA_ARCH_FLAGS})
if (NOT DEFINED CUDA_ARCH_MATCH OR "${CMAKE_MATCH_1}" LESS 35)
set(CLANG_OPENMP_NVPTX_DEFAULT_ARCH "sm_35" CACHE STRING
"Default architecture for OpenMP offloading to Nvidia GPUs." FORCE)
message(WARNING "Resetting default architecture for OpenMP offloading to Nvidia GPUs to sm_35")
else()
set(CLANG_OPENMP_NVPTX_DEFAULT_ARCH ${CUDA_ARCH_MATCH} CACHE STRING
"Default architecture for OpenMP offloading to Nvidia GPUs.")
endif()
set(CLANG_SYSTEMZ_DEFAULT_ARCH "z10" CACHE STRING "SystemZ Default Arch")
set(CLANG_VENDOR ${PACKAGE_VENDOR} CACHE STRING
"Vendor-specific text for showing with version information.")
set(CLANG_REPOSITORY_STRING "" CACHE STRING
"Vendor-specific text for showing the repository the source is taken from.")
if(CLANG_REPOSITORY_STRING)
add_definitions(-DCLANG_REPOSITORY_STRING="${CLANG_REPOSITORY_STRING}")
endif()
set(CLANG_VENDOR_UTI "org.llvm.clang" CACHE STRING
"Vendor-specific uti.")
set(CLANG_PYTHON_BINDINGS_VERSIONS "" CACHE STRING
"Python versions to install libclang python bindings for")
set(CLANG_LINK_CLANG_DYLIB ${LLVM_LINK_LLVM_DYLIB} CACHE BOOL
"Link tools against libclang-cpp.so")
if (NOT LLVM_LINK_LLVM_DYLIB AND CLANG_LINK_CLANG_DYLIB)
message(FATAL_ERROR "Cannot set CLANG_LINK_CLANG_DYLIB=ON when "
"LLVM_LINK_LLVM_DYLIB=OFF")
endif()
# The libdir suffix must exactly match whatever LLVM's configuration used.
set(CLANG_LIBDIR_SUFFIX "${LLVM_LIBDIR_SUFFIX}")
set(CLANG_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
set(CLANG_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
if( CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR AND NOT MSVC_IDE )
message(FATAL_ERROR "In-source builds are not allowed. "
"Please create a directory and run cmake "
"from there, passing the path to this source directory as the last argument. "
"This process created the file `CMakeCache.txt' and the directory "
"`CMakeFiles'. Please delete them.")
endif()
# If CLANG_VERSION_* is specified, use it, if not use LLVM_VERSION_*.
if(NOT DEFINED CLANG_VERSION_MAJOR)
set(CLANG_VERSION_MAJOR ${LLVM_VERSION_MAJOR})
endif()
if(NOT DEFINED CLANG_VERSION_MINOR)
set(CLANG_VERSION_MINOR ${LLVM_VERSION_MINOR})
endif()
if(NOT DEFINED CLANG_VERSION_PATCHLEVEL)
set(CLANG_VERSION_PATCHLEVEL ${LLVM_VERSION_PATCH})
endif()
Simplify Clang's version number configuration in CMake. Currently, the Clang version is computed as follows: 1. LLVM defines major, minor, and patch versions, all statically set. Today, these are 4, 0, and 0, respectively. 2. The static version numbers are combined into PACKAGE_VERSION along with a suffix, so the result today looks like "4.0.0svn". 3. Clang extracts CLANG_VERSION from PACKAGE_VERSION using a regexp. The regexp allows the patch level to omitted, and drops any non-digit trailing values. Today, this result looks like "4.0.0". 4. CLANG_VERSION is then split further into CLANG_VERSION_MAJOR and CLANG_VERSION_MINOR. Today, these resolve to 4 and 0, respectively. 5. If CLANG_VERSION matches a regexp with three version components, then CLANG_VERSION_PATCHLEVEL is extracted and the CLANG_HAS_VERSION_PATCHLEVEL variable is set to 1. Today, these values are 0 and 1, respectively. 6. The CLANG_VERSION_* variables (and CLANG_HAS_VERSION_PATCHLEVEL) are configured into [llvm/tools/clang/]include/clang/Basic/Version.inc verbatim by CMake. 7. In [llvm/tools/clang/]include/clang/Basic/Version.h, macros are defined conditionally, based on CLANG_HAS_VERSION_PATCHLEVEL, to compute CLANG_VERSION_STRING as either a two- or three-level version number. Today, this value is "4.0.0", because despite the patchlevel being 0, it was matched by regexp and is thus "HAS"ed by the preprocessor. This string is then used wherever Clang's "version" is needed [*]. [*] Including, notably, by compiler-rt, for computing its installation path. This change collapses steps 2-5 by defaulting Clang to use LLVM's (non-string) version components for the Clang version (see [*] for why not PACKAGE_VERSION), and collapses steps 6 and 7 by simply writing CLANG_VERSION_STRING into Version.inc. The Clang version today always uses the patchlevel form, so the collapsed Version.inc does not have logic for a version without a patch level. Historically speaking, this technique began with the VER file in r82085 (which survives in the form of the regexp in #3). The major, minor, and patchlevel versions were introduced by r106863 (which remains in #4-6). The VER file itself was deleted in favor of the LLVM version number in r106914. On the LLVM side, the individual LLVM_VERSION_MAJOR, LLVM_VERSION_MINOR, and PACKAGE_VERSION weren't introduced for nearly two more years, until r150405. llvm-svn: 281666
2016-09-16 06:12:26 +08:00
# Unlike PACKAGE_VERSION, CLANG_VERSION does not include LLVM_VERSION_SUFFIX.
set(CLANG_VERSION "${CLANG_VERSION_MAJOR}.${CLANG_VERSION_MINOR}.${CLANG_VERSION_PATCHLEVEL}")
message(STATUS "Clang version: ${CLANG_VERSION}")
# Configure the Version.inc file.
configure_file(
${CMAKE_CURRENT_SOURCE_DIR}/include/clang/Basic/Version.inc.in
${CMAKE_CURRENT_BINARY_DIR}/include/clang/Basic/Version.inc)
# Add appropriate flags for GCC
if (LLVM_COMPILER_IS_GCC_COMPATIBLE)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-common -Woverloaded-virtual")
if (NOT "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-strict-aliasing")
endif ()
# Enable -pedantic for Clang even if it's not enabled for LLVM.
if (NOT LLVM_ENABLE_PEDANTIC)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic -Wno-long-long")
endif ()
check_cxx_compiler_flag("-Werror -Wnested-anon-types" CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG)
if( CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG )
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-nested-anon-types" )
endif()
endif ()
# Determine HOST_LINK_VERSION on Darwin.
set(HOST_LINK_VERSION)
if (APPLE)
set(LD_V_OUTPUT)
execute_process(
COMMAND sh -c "${CMAKE_LINKER} -v 2>&1 | head -1"
RESULT_VARIABLE HAD_ERROR
OUTPUT_VARIABLE LD_V_OUTPUT
)
if (HAD_ERROR)
message(FATAL_ERROR "${CMAKE_LINKER} failed with status ${HAD_ERROR}")
endif()
if ("${LD_V_OUTPUT}" MATCHES ".*ld64-([0-9.]+).*")
string(REGEX REPLACE ".*ld64-([0-9.]+).*" "\\1" HOST_LINK_VERSION ${LD_V_OUTPUT})
elseif ("${LD_V_OUTPUT}" MATCHES "[^0-9]*([0-9.]+).*")
string(REGEX REPLACE "[^0-9]*([0-9.]+).*" "\\1" HOST_LINK_VERSION ${LD_V_OUTPUT})
endif()
message(STATUS "Host linker version: ${HOST_LINK_VERSION}")
endif()
include(CMakeParseArguments)
include(AddClang)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
include_directories(BEFORE
${CMAKE_CURRENT_BINARY_DIR}/include
${CMAKE_CURRENT_SOURCE_DIR}/include
)
if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
install(DIRECTORY include/clang include/clang-c
DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
COMPONENT clang-headers
FILES_MATCHING
PATTERN "*.def"
PATTERN "*.h"
PATTERN "config.h" EXCLUDE
)
install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/include/clang
DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
COMPONENT clang-headers
FILES_MATCHING
PATTERN "CMakeFiles" EXCLUDE
PATTERN "*.inc"
PATTERN "*.h"
)
# Installing the headers needs to depend on generating any public
# tablegen'd headers.
add_custom_target(clang-headers DEPENDS clang-tablegen-targets)
set_target_properties(clang-headers PROPERTIES FOLDER "Misc")
if(NOT LLVM_ENABLE_IDE)
add_llvm_install_targets(install-clang-headers
DEPENDS clang-headers
COMPONENT clang-headers)
endif()
add_custom_target(bash-autocomplete DEPENDS utils/bash-autocomplete.sh)
install(PROGRAMS utils/bash-autocomplete.sh
DESTINATION "${CMAKE_INSTALL_DATADIR}/clang"
COMPONENT bash-autocomplete)
if(NOT LLVM_ENABLE_IDE)
add_llvm_install_targets(install-bash-autocomplete
DEPENDS bash-autocomplete
COMPONENT bash-autocomplete)
endif()
endif()
add_definitions( -D_GNU_SOURCE )
option(CLANG_BUILD_TOOLS
"Build the Clang tools. If OFF, just generate build targets." ON)
option(CLANG_ENABLE_ARCMT "Build ARCMT." ON)
option(CLANG_ENABLE_STATIC_ANALYZER
"Include static analyzer in clang binary." ON)
option(CLANG_ENABLE_PROTO_FUZZER "Build Clang protobuf fuzzer." OFF)
if(NOT CLANG_ENABLE_STATIC_ANALYZER AND CLANG_ENABLE_ARCMT)
message(FATAL_ERROR "Cannot disable static analyzer while enabling ARCMT or Z3")
endif()
if(CLANG_ENABLE_ARCMT)
set(CLANG_ENABLE_OBJC_REWRITER ON)
endif()
# Clang version information
set(CLANG_EXECUTABLE_VERSION
"${CLANG_VERSION_MAJOR}" CACHE STRING
"Major version number that will be appended to the clang executable name")
set(LIBCLANG_LIBRARY_VERSION
"${CLANG_VERSION_MAJOR}" CACHE STRING
"Major version number that will be appended to the libclang library")
mark_as_advanced(CLANG_EXECUTABLE_VERSION LIBCLANG_LIBRARY_VERSION)
option(CLANG_INCLUDE_TESTS
"Generate build targets for the Clang unit tests."
${LLVM_INCLUDE_TESTS})
add_subdirectory(utils/TableGen)
add_subdirectory(include)
# All targets below may depend on all tablegen'd files.
get_property(CLANG_TABLEGEN_TARGETS GLOBAL PROPERTY CLANG_TABLEGEN_TARGETS)
add_custom_target(clang-tablegen-targets
DEPENDS
omp_gen
${CLANG_TABLEGEN_TARGETS})
set_target_properties(clang-tablegen-targets PROPERTIES FOLDER "Misc")
list(APPEND LLVM_COMMON_DEPENDS clang-tablegen-targets)
# Force target to be built as soon as possible. Clang modules builds depend
# header-wise on it as they ship all headers from the umbrella folders. Building
# an entire module might include header, which depends on intrinsics_gen.
if(LLVM_ENABLE_MODULES)
list(APPEND LLVM_COMMON_DEPENDS intrinsics_gen)
endif()
add_subdirectory(lib)
add_subdirectory(tools)
add_subdirectory(runtime)
option(CLANG_BUILD_EXAMPLES "Build CLANG example programs by default." OFF)
add_subdirectory(examples)
if(APPLE)
# this line is needed as a cleanup to ensure that any CMakeCaches with the old
# default value get updated to the new default.
if(CLANG_ORDER_FILE STREQUAL "")
unset(CLANG_ORDER_FILE CACHE)
unset(CLANG_ORDER_FILE)
endif()
set(CLANG_ORDER_FILE ${CMAKE_CURRENT_BINARY_DIR}/clang.order CACHE FILEPATH
"Order file to use when compiling clang in order to improve startup time (Darwin Only - requires ld64).")
if(NOT EXISTS ${CLANG_ORDER_FILE})
string(FIND "${CLANG_ORDER_FILE}" "${CMAKE_CURRENT_BINARY_DIR}" PATH_START)
if(PATH_START EQUAL 0)
file(WRITE ${CLANG_ORDER_FILE} "\n")
else()
message(FATAL_ERROR "Specified order file '${CLANG_ORDER_FILE}' does not exist.")
endif()
endif()
endif()
if( CLANG_INCLUDE_TESTS )
if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/unittest/googletest/include/gtest/gtest.h)
add_subdirectory(unittests)
list(APPEND CLANG_TEST_DEPS ClangUnitTests)
list(APPEND CLANG_TEST_PARAMS
clang_unit_site_config=${CMAKE_CURRENT_BINARY_DIR}/test/Unit/lit.site.cfg
)
endif()
add_subdirectory(test)
add_subdirectory(bindings/python/tests)
if(CLANG_BUILT_STANDALONE)
# Add a global check rule now that all subdirectories have been traversed
# and we know the total set of lit testsuites.
get_property(LLVM_LIT_TESTSUITES GLOBAL PROPERTY LLVM_LIT_TESTSUITES)
get_property(LLVM_LIT_PARAMS GLOBAL PROPERTY LLVM_LIT_PARAMS)
get_property(LLVM_LIT_DEPENDS GLOBAL PROPERTY LLVM_LIT_DEPENDS)
get_property(LLVM_LIT_EXTRA_ARGS GLOBAL PROPERTY LLVM_LIT_EXTRA_ARGS)
get_property(LLVM_ADDITIONAL_TEST_TARGETS
GLOBAL PROPERTY LLVM_ADDITIONAL_TEST_TARGETS)
add_lit_target(check-all
"Running all regression tests"
${LLVM_LIT_TESTSUITES}
PARAMS ${LLVM_LIT_PARAMS}
DEPENDS ${LLVM_LIT_DEPENDS} ${LLVM_ADDITIONAL_TEST_TARGETS}
ARGS ${LLVM_LIT_EXTRA_ARGS}
)
endif()
add_subdirectory(utils/perf-training)
endif()
option(CLANG_INCLUDE_DOCS "Generate build targets for the Clang docs."
${LLVM_INCLUDE_DOCS})
if( CLANG_INCLUDE_DOCS )
add_subdirectory(docs)
endif()
# Custom target to install all clang libraries.
add_custom_target(clang-libraries)
set_target_properties(clang-libraries PROPERTIES FOLDER "Misc")
if(NOT LLVM_ENABLE_IDE)
add_llvm_install_targets(install-clang-libraries
DEPENDS clang-libraries
COMPONENT clang-libraries)
endif()
get_property(CLANG_LIBS GLOBAL PROPERTY CLANG_LIBS)
if(CLANG_LIBS)
list(REMOVE_DUPLICATES CLANG_LIBS)
foreach(lib ${CLANG_LIBS})
add_dependencies(clang-libraries ${lib})
if(NOT LLVM_ENABLE_IDE)
add_dependencies(install-clang-libraries install-${lib})
add_dependencies(install-clang-libraries-stripped install-${lib}-stripped)
endif()
endforeach()
endif()
add_subdirectory(cmake/modules)
if(CLANG_STAGE)
message(STATUS "Setting current clang stage to: ${CLANG_STAGE}")
endif()
if (CLANG_ENABLE_BOOTSTRAP)
include(ExternalProject)
add_custom_target(clang-bootstrap-deps DEPENDS clang)
if(NOT CLANG_STAGE)
set(CLANG_STAGE stage1)
endif()
string(REGEX MATCH "stage([0-9]*)" MATCHED_STAGE "${CLANG_STAGE}")
if(MATCHED_STAGE)
if(NOT LLVM_BUILD_INSTRUMENTED)
math(EXPR STAGE_NUM "${CMAKE_MATCH_1} + 1")
set(NEXT_CLANG_STAGE stage${STAGE_NUM})
else()
set(NEXT_CLANG_STAGE stage${CMAKE_MATCH_1})
endif()
else()
set(NEXT_CLANG_STAGE bootstrap)
endif()
if(BOOTSTRAP_LLVM_BUILD_INSTRUMENTED)
set(NEXT_CLANG_STAGE ${NEXT_CLANG_STAGE}-instrumented)
endif()
message(STATUS "Setting next clang stage to: ${NEXT_CLANG_STAGE}")
set(STAMP_DIR ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-stamps/)
set(BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-bins/)
if(BOOTSTRAP_LLVM_ENABLE_LLD)
# adding lld to clang-bootstrap-deps without having it enabled in
# LLVM_ENABLE_PROJECTS just generates a cryptic error message.
if (NOT "lld" IN_LIST LLVM_ENABLE_PROJECTS)
message(FATAL_ERROR "LLD is enabled in the bootstrap build, but lld is not in LLVM_ENABLE_PROJECTS")
endif()
add_dependencies(clang-bootstrap-deps lld)
endif()
# If the next stage is LTO we need to depend on LTO and possibly lld or LLVMgold
if(BOOTSTRAP_LLVM_ENABLE_LTO OR LLVM_ENABLE_LTO AND NOT LLVM_BUILD_INSTRUMENTED)
if(APPLE)
add_dependencies(clang-bootstrap-deps LTO)
# on Darwin we need to set DARWIN_LTO_LIBRARY so that -flto will work
# using the just-built compiler, and we need to override DYLD_LIBRARY_PATH
# so that the host object file tools will use the just-built libLTO.
# However if System Integrity Protection is enabled the DYLD variables
# will be scrubbed from the environment of any base system commands. This
# includes /bin/sh, which ninja uses when executing build commands. To
# work around the envar being filtered away we pass it in as a CMake
# variable, and have LLVM's CMake append the envar to the archiver calls.
set(LTO_LIBRARY -DDARWIN_LTO_LIBRARY=${LLVM_SHLIB_OUTPUT_INTDIR}/libLTO.dylib
-DDYLD_LIBRARY_PATH=${LLVM_LIBRARY_OUTPUT_INTDIR})
elseif(NOT WIN32)
add_dependencies(clang-bootstrap-deps llvm-ar llvm-ranlib)
if(NOT BOOTSTRAP_LLVM_ENABLE_LLD AND LLVM_BINUTILS_INCDIR)
add_dependencies(clang-bootstrap-deps LLVMgold)
endif()
set(${CLANG_STAGE}_AR -DCMAKE_AR=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ar)
set(${CLANG_STAGE}_RANLIB -DCMAKE_RANLIB=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ranlib)
endif()
endif()
if(CLANG_BOOTSTRAP_EXTRA_DEPS)
add_dependencies(clang-bootstrap-deps ${CLANG_BOOTSTRAP_EXTRA_DEPS})
endif()
add_custom_target(${NEXT_CLANG_STAGE}-clear
DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-cleared
)
add_custom_command(
OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-cleared
DEPENDS clang-bootstrap-deps
COMMAND ${CMAKE_COMMAND} -E remove_directory ${BINARY_DIR}
COMMAND ${CMAKE_COMMAND} -E make_directory ${BINARY_DIR}
COMMAND ${CMAKE_COMMAND} -E remove_directory ${STAMP_DIR}
COMMAND ${CMAKE_COMMAND} -E make_directory ${STAMP_DIR}
COMMENT "Clobberring ${NEXT_CLANG_STAGE} build and stamp directories"
)
if(CMAKE_VERBOSE_MAKEFILE)
set(verbose -DCMAKE_VERBOSE_MAKEFILE=On)
endif()
set(_BOOTSTRAP_DEFAULT_PASSTHROUGH
PACKAGE_VERSION
PACKAGE_VENDOR
LLVM_VERSION_MAJOR
LLVM_VERSION_MINOR
LLVM_VERSION_PATCH
CLANG_VERSION_MAJOR
CLANG_VERSION_MINOR
CLANG_VERSION_PATCHLEVEL
CLANG_VENDOR
LLVM_VERSION_SUFFIX
LLVM_BINUTILS_INCDIR
CLANG_REPOSITORY_STRING
CMAKE_C_COMPILER_LAUNCHER
CMAKE_CXX_COMPILER_LAUNCHER
CMAKE_MAKE_PROGRAM
CMAKE_OSX_ARCHITECTURES
CMAKE_BUILD_TYPE
LLVM_ENABLE_PROJECTS
LLVM_ENABLE_RUNTIMES)
# We don't need to depend on compiler-rt/libcxx if we're building instrumented
# because the next stage will use the same compiler used to build this stage.
if(NOT LLVM_BUILD_INSTRUMENTED)
if(TARGET compiler-rt)
add_dependencies(clang-bootstrap-deps compiler-rt)
endif()
if(TARGET cxx-headers)
add_dependencies(clang-bootstrap-deps cxx-headers)
endif()
endif()
set(C_COMPILER "clang")
set(CXX_COMPILER "clang++")
if(WIN32)
set(C_COMPILER "clang-cl.exe")
set(CXX_COMPILER "clang-cl.exe")
endif()
set(COMPILER_OPTIONS
-DCMAKE_CXX_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/${CXX_COMPILER}
-DCMAKE_C_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/${C_COMPILER}
-DCMAKE_ASM_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/${C_COMPILER}
-DCMAKE_ASM_COMPILER_ID=Clang)
# cmake requires CMAKE_LINKER to be specified if the compiler is MSVC-like,
# otherwise it defaults the linker to be link.exe.
if(BOOTSTRAP_LLVM_ENABLE_LLD)
if((WIN32 AND NOT BOOTSTRAP_CMAKE_SYSTEM_NAME) OR BOOTSTRAP_CMAKE_SYSTEM_NAME STREQUAL "Windows")
set(${CLANG_STAGE}_LINKER -DCMAKE_LINKER=${LLVM_RUNTIME_OUTPUT_INTDIR}/lld-link${CMAKE_EXECUTABLE_SUFFIX})
endif()
endif()
if(BOOTSTRAP_CMAKE_SYSTEM_NAME)
set(${CLANG_STAGE}_CONFIG -DLLVM_CONFIG_PATH=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-config)
set(${CLANG_STAGE}_TABLEGEN
-DLLVM_TABLEGEN=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-tblgen
-DCLANG_TABLEGEN=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang-tblgen)
if(BOOTSTRAP_CMAKE_SYSTEM_NAME STREQUAL "Linux")
if(BOOTSTRAP_LLVM_ENABLE_LLD)
set(${CLANG_STAGE}_LINKER -DCMAKE_LINKER=${LLVM_RUNTIME_OUTPUT_INTDIR}/ld.lld)
endif()
if(NOT BOOTSTRAP_LLVM_ENABLE_LTO)
add_dependencies(clang-bootstrap-deps llvm-ar llvm-ranlib)
set(${CLANG_STAGE}_AR -DCMAKE_AR=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ar)
set(${CLANG_STAGE}_RANLIB -DCMAKE_RANLIB=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ranlib)
endif()
add_dependencies(clang-bootstrap-deps llvm-objcopy llvm-strip)
set(${CLANG_STAGE}_OBJCOPY -DCMAKE_OBJCOPY=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-objcopy)
set(${CLANG_STAGE}_STRIP -DCMAKE_STRIP=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-strip)
set(${CLANG_STAGE}_READELF -DCMAKE_READELF=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-readelf)
endif()
endif()
if(BOOTSTRAP_LLVM_BUILD_INSTRUMENTED)
add_dependencies(clang-bootstrap-deps llvm-profdata)
set(PGO_OPT -DLLVM_PROFDATA=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-profdata)
endif()
if(LLVM_BUILD_INSTRUMENTED)
add_dependencies(clang-bootstrap-deps generate-profdata)
set(PGO_OPT -DLLVM_PROFDATA_FILE=${CMAKE_CURRENT_BINARY_DIR}/utils/perf-training/clang.profdata)
# Use the current tools for LTO instead of the instrumented ones
list(APPEND _BOOTSTRAP_DEFAULT_PASSTHROUGH
CMAKE_CXX_COMPILER
CMAKE_C_COMPILER
CMAKE_ASM_COMPILER
CMAKE_AR
CMAKE_RANLIB
DARWIN_LTO_LIBRARY
DYLD_LIBRARY_PATH)
set(COMPILER_OPTIONS)
set(LTO_LIBRARY)
set(LTO_AR)
set(LTO_RANLIB)
endif()
# Find all variables that start with BOOTSTRAP_ and populate a variable with
# them.
get_cmake_property(variableNames VARIABLES)
foreach(variableName ${variableNames})
if(variableName MATCHES "^BOOTSTRAP_")
string(SUBSTRING ${variableName} 10 -1 varName)
string(REPLACE ";" "|" value "${${variableName}}")
list(APPEND PASSTHROUGH_VARIABLES
-D${varName}=${value})
endif()
if(${variableName} AND variableName MATCHES "LLVM_EXTERNAL_.*_SOURCE_DIR")
list(APPEND PASSTHROUGH_VARIABLES
-D${variableName}=${${variableName}})
endif()
endforeach()
# Populate the passthrough variables
foreach(variableName ${CLANG_BOOTSTRAP_PASSTHROUGH} ${_BOOTSTRAP_DEFAULT_PASSTHROUGH})
if(DEFINED ${variableName})
if("${${variableName}}" STREQUAL "")
set(value "")
else()
string(REPLACE ";" "|" value "${${variableName}}")
endif()
list(APPEND PASSTHROUGH_VARIABLES
-D${variableName}=${value})
endif()
endforeach()
ExternalProject_Add(${NEXT_CLANG_STAGE}
DEPENDS clang-bootstrap-deps
PREFIX ${NEXT_CLANG_STAGE}
SOURCE_DIR ${CMAKE_SOURCE_DIR}
STAMP_DIR ${STAMP_DIR}
BINARY_DIR ${BINARY_DIR}
EXCLUDE_FROM_ALL 1
CMAKE_ARGS
# We shouldn't need to set this here, but INSTALL_DIR doesn't
# seem to work, so instead I'm passing this through
-DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}
${PASSTHROUGH_VARIABLES}
${CLANG_BOOTSTRAP_CMAKE_ARGS}
-DCLANG_STAGE=${NEXT_CLANG_STAGE}
${COMPILER_OPTIONS}
${${CLANG_STAGE}_CONFIG}
${${CLANG_STAGE}_TABLEGEN}
${LTO_LIBRARY} ${verbose} ${PGO_OPT}
${${CLANG_STAGE}_LINKER}
${${CLANG_STAGE}_AR}
${${CLANG_STAGE}_RANLIB}
${${CLANG_STAGE}_OBJCOPY}
${${CLANG_STAGE}_STRIP}
INSTALL_COMMAND ""
STEP_TARGETS configure build
USES_TERMINAL_CONFIGURE 1
USES_TERMINAL_BUILD 1
USES_TERMINAL_INSTALL 1
LIST_SEPARATOR |
)
# exclude really-install from main target
set_target_properties(${NEXT_CLANG_STAGE} PROPERTIES _EP_really-install_EXCLUDE_FROM_MAIN On)
ExternalProject_Add_Step(${NEXT_CLANG_STAGE} really-install
COMMAND ${CMAKE_COMMAND} --build <BINARY_DIR> --target install
COMMENT "Performing install step for '${NEXT_CLANG_STAGE}'"
DEPENDEES build
USES_TERMINAL 1
)
ExternalProject_Add_StepTargets(${NEXT_CLANG_STAGE} really-install)
add_custom_target(${NEXT_CLANG_STAGE}-install DEPENDS ${NEXT_CLANG_STAGE}-really-install)
if(NOT CLANG_BOOTSTRAP_TARGETS)
set(CLANG_BOOTSTRAP_TARGETS check-llvm check-clang check-all)
endif()
foreach(target ${CLANG_BOOTSTRAP_TARGETS})
# Install targets have side effects, so we always want to execute them.
# "install" is reserved by CMake and can't be used as a step name for
# ExternalProject_Add_Step, so we can match against "^install-" instead of
# "^install" to get a tighter match. CMake's installation scripts already
# skip up-to-date files, so there's no behavior change if you install to the
# same destination multiple times.
if(target MATCHES "^install-")
set(step_always ON)
else()
set(step_always OFF)
endif()
ExternalProject_Add_Step(${NEXT_CLANG_STAGE} ${target}
COMMAND ${CMAKE_COMMAND} --build <BINARY_DIR> --target ${target}
COMMENT "Performing ${target} for '${NEXT_CLANG_STAGE}'"
DEPENDEES configure
ALWAYS ${step_always}
EXCLUDE_FROM_MAIN ON
USES_TERMINAL 1
)
if(target MATCHES "^stage[0-9]*")
add_custom_target(${target} DEPENDS ${NEXT_CLANG_STAGE}-${target})
endif()
ExternalProject_Add_StepTargets(${NEXT_CLANG_STAGE} ${target})
endforeach()
endif()
if (LLVM_ADD_NATIVE_VISUALIZERS_TO_SOLUTION)
add_subdirectory(utils/ClangVisualizers)
endif()
add_subdirectory(utils/hmaptool)
if(CLANG_BUILT_STANDALONE)
llvm_distribution_add_targets()
process_llvm_pass_plugins()
endif()
configure_file(
${CLANG_SOURCE_DIR}/include/clang/Config/config.h.cmake
${CLANG_BINARY_DIR}/include/clang/Config/config.h)