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llvm-project/clang/CMakeLists.txt

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CMake
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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(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(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}
"--assertion-mode"
"--bindir"
"--libdir"
"--includedir"
"--prefix"
"--src-root"
"--cmakedir")
execute_process(
COMMAND ${CONFIG_COMMAND}
RESULT_VARIABLE HAD_ERROR
OUTPUT_VARIABLE CONFIG_OUTPUT
)
if(NOT HAD_ERROR)
string(REGEX REPLACE
"[ \t]*[\r\n]+[ \t]*" ";"
CONFIG_OUTPUT ${CONFIG_OUTPUT})
else()
string(REPLACE ";" " " CONFIG_COMMAND_STR "${CONFIG_COMMAND}")
message(STATUS "${CONFIG_COMMAND_STR}")
message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}")
endif()
list(GET CONFIG_OUTPUT 0 ENABLE_ASSERTIONS)
list(GET CONFIG_OUTPUT 1 TOOLS_BINARY_DIR)
list(GET CONFIG_OUTPUT 2 LIBRARY_DIR)
list(GET CONFIG_OUTPUT 3 INCLUDE_DIR)
list(GET CONFIG_OUTPUT 4 LLVM_OBJ_ROOT)
list(GET CONFIG_OUTPUT 5 MAIN_SRC_DIR)
list(GET CONFIG_OUTPUT 6 LLVM_CONFIG_CMAKE_DIR)
# 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(TOOLS_BINARY_DIR ${LLVM_TOOLS_BINARY_DIR})
set(LIBRARY_DIR ${LLVM_LIBRARY_DIR})
set(INCLUDE_DIR ${LLVM_INCLUDE_DIR})
set(LLVM_OBJ_DIR ${LLVM_BINARY_DIR})
endif()
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")
set(LLVM_MAIN_INCLUDE_DIR ${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")
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( CLANG_BUILT_STANDALONE 1 )
set(BACKEND_PACKAGE_STRING "LLVM ${LLVM_PACKAGE_VERSION}")
else()
set(BACKEND_PACKAGE_STRING "${PACKAGE_STRING}")
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(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/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)
if(CLANG_DEFAULT_PIE_ON_LINUX)
set(CLANG_DEFAULT_PIE_ON_LINUX 1)
endif()
# 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 ${LLVM_VERSION_PATCH})
endif()
# Unlike PACKAGE_VERSION, CLANG_VERSION does not include LLVM_VERSION_SUFFIX.
set(CLANG_VERSION "${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 include
COMPONENT clang-headers
FILES_MATCHING
PATTERN "*.def"
PATTERN "*.h"
PATTERN "config.h" EXCLUDE
)
install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/include/clang
DESTINATION include
COMPONENT clang-headers
FILES_MATCHING
PATTERN "CMakeFiles" EXCLUDE
PATTERN "*.inc"
PATTERN "*.h"
)
# Installing the headers needs to depend on generating any public
# tablegen'd headers.
add_custom_target(clang-headers DEPENDS clang-tablegen-targets)
set_target_properties(clang-headers PROPERTIES FOLDER "Misc")
if(NOT LLVM_ENABLE_IDE)
add_llvm_install_targets(install-clang-headers
DEPENDS clang-headers
COMPONENT clang-headers)
endif()
add_custom_target(bash-autocomplete DEPENDS utils/bash-autocomplete.sh)
install(PROGRAMS utils/bash-autocomplete.sh
DESTINATION share/clang
COMPONENT bash-autocomplete)
if(NOT LLVM_ENABLE_IDE)
add_llvm_install_targets(install-bash-autocomplete
DEPENDS bash-autocomplete
COMPONENT bash-autocomplete)
endif()
endif()
add_definitions( -D_GNU_SOURCE )
option(CLANG_BUILD_TOOLS
"Build the Clang tools. If OFF, just generate build targets." ON)
option(CLANG_ENABLE_ARCMT "Build ARCMT." ON)
option(CLANG_ENABLE_STATIC_ANALYZER
"Include static analyzer in clang binary." ON)
option(CLANG_ENABLE_PROTO_FUZZER "Build Clang protobuf fuzzer." OFF)
if(NOT CLANG_ENABLE_STATIC_ANALYZER AND CLANG_ENABLE_ARCMT)
message(FATAL_ERROR "Cannot disable static analyzer while enabling ARCMT or Z3")
endif()
if(CLANG_ENABLE_ARCMT)
set(CLANG_ENABLE_OBJC_REWRITER ON)
endif()
# Clang version information
set(CLANG_EXECUTABLE_VERSION
"${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)
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