1cmake_minimum_required(VERSION 3.13.4) 2 3if(NOT DEFINED LLVM_COMMON_CMAKE_UTILS) 4 set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake) 5endif() 6include(${LLVM_COMMON_CMAKE_UTILS}/Modules/CMakePolicy.cmake 7 NO_POLICY_SCOPE) 8 9# If we are not building as a part of LLVM, build Clang as an 10# standalone project, using LLVM as an external library: 11if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR) 12 project(Clang) 13 set(CLANG_BUILT_STANDALONE TRUE) 14 if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0") 15 message(WARNING 16 "Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the " 17 "minimum version of CMake required to build LLVM will become 3.20.0, and " 18 "using an older CMake will become an error. Please upgrade your CMake to " 19 "at least 3.20.0 now to avoid issues in the future!") 20 endif() 21endif() 22 23# Must go below project(..) 24include(GNUInstallDirs) 25 26if(CLANG_BUILT_STANDALONE) 27 set(CMAKE_CXX_STANDARD 17 CACHE STRING "C++ standard to conform to") 28 set(CMAKE_CXX_STANDARD_REQUIRED YES) 29 set(CMAKE_CXX_EXTENSIONS NO) 30 31 if(NOT MSVC_IDE) 32 set(LLVM_ENABLE_ASSERTIONS ${ENABLE_ASSERTIONS} 33 CACHE BOOL "Enable assertions") 34 # Assertions should follow llvm-config's. 35 mark_as_advanced(LLVM_ENABLE_ASSERTIONS) 36 endif() 37 38 find_package(LLVM REQUIRED HINTS "${LLVM_CMAKE_DIR}") 39 list(APPEND CMAKE_MODULE_PATH "${LLVM_DIR}") 40 41 # Turn into CACHE PATHs for overwritting 42 set(LLVM_INCLUDE_DIRS ${LLVM_INCLUDE_DIRS} CACHE PATH "Path to llvm/include and any other header dirs needed") 43 set(LLVM_BINARY_DIR "${LLVM_BINARY_DIR}" CACHE PATH "Path to LLVM build tree") 44 set(LLVM_MAIN_SRC_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../llvm" CACHE PATH "Path to LLVM source tree") 45 set(LLVM_TOOLS_BINARY_DIR "${LLVM_TOOLS_BINARY_DIR}" CACHE PATH "Path to llvm/bin") 46 set(LLVM_LIBRARY_DIR "${LLVM_LIBRARY_DIR}" CACHE PATH "Path to llvm/lib") 47 48 find_program(LLVM_TABLEGEN_EXE "llvm-tblgen" ${LLVM_TOOLS_BINARY_DIR} 49 NO_DEFAULT_PATH) 50 51 # They are used as destination of target generators. 52 set(LLVM_RUNTIME_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/bin) 53 set(LLVM_LIBRARY_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX}) 54 if(WIN32 OR CYGWIN) 55 # DLL platform -- put DLLs into bin. 56 set(LLVM_SHLIB_OUTPUT_INTDIR ${LLVM_RUNTIME_OUTPUT_INTDIR}) 57 else() 58 set(LLVM_SHLIB_OUTPUT_INTDIR ${LLVM_LIBRARY_OUTPUT_INTDIR}) 59 endif() 60 61 option(LLVM_INSTALL_TOOLCHAIN_ONLY 62 "Only include toolchain files in the 'install' target." OFF) 63 64 option(LLVM_FORCE_USE_OLD_HOST_TOOLCHAIN 65 "Set to ON to force using an old, unsupported host toolchain." OFF) 66 option(CLANG_ENABLE_BOOTSTRAP "Generate the clang bootstrap target" OFF) 67 option(LLVM_ENABLE_LIBXML2 "Use libxml2 if available." ON) 68 69 include(AddLLVM) 70 include(TableGen) 71 include(HandleLLVMOptions) 72 include(VersionFromVCS) 73 include(CheckAtomic) 74 include(GetErrcMessages) 75 include(LLVMDistributionSupport) 76 77 set(PACKAGE_VERSION "${LLVM_PACKAGE_VERSION}") 78 set(BUG_REPORT_URL "${LLVM_PACKAGE_BUGREPORT}" CACHE STRING 79 "Default URL where bug reports are to be submitted.") 80 81 if (NOT DEFINED LLVM_INCLUDE_TESTS) 82 set(LLVM_INCLUDE_TESTS ON) 83 endif() 84 85 include_directories(${LLVM_INCLUDE_DIRS}) 86 link_directories("${LLVM_LIBRARY_DIR}") 87 88 set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin ) 89 set( CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} ) 90 set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} ) 91 92 if(LLVM_INCLUDE_TESTS) 93 find_package(Python3 ${LLVM_MINIMUM_PYTHON_VERSION} REQUIRED 94 COMPONENTS Interpreter) 95 96 # Check prebuilt llvm/utils. 97 if(EXISTS ${LLVM_TOOLS_BINARY_DIR}/FileCheck${CMAKE_EXECUTABLE_SUFFIX} 98 AND EXISTS ${LLVM_TOOLS_BINARY_DIR}/count${CMAKE_EXECUTABLE_SUFFIX} 99 AND EXISTS ${LLVM_TOOLS_BINARY_DIR}/not${CMAKE_EXECUTABLE_SUFFIX}) 100 set(LLVM_UTILS_PROVIDED ON) 101 endif() 102 103 # Seek installed Lit. 104 find_program(LLVM_LIT 105 NAMES llvm-lit lit.py lit 106 PATHS "${LLVM_MAIN_SRC_DIR}/utils/lit" 107 DOC "Path to lit.py") 108 109 if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py) 110 # Note: path not really used, except for checking if lit was found 111 if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/llvm-lit) 112 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/llvm-lit utils/llvm-lit) 113 endif() 114 if(NOT LLVM_UTILS_PROVIDED) 115 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/FileCheck utils/FileCheck) 116 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/count utils/count) 117 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/not utils/not) 118 set(LLVM_UTILS_PROVIDED ON) 119 set(CLANG_TEST_DEPS FileCheck count not) 120 endif() 121 set(UNITTEST_DIR ${LLVM_THIRD_PARTY_DIR}/unittest) 122 if(EXISTS ${UNITTEST_DIR}/googletest/include/gtest/gtest.h 123 AND NOT EXISTS ${LLVM_LIBRARY_DIR}/${CMAKE_STATIC_LIBRARY_PREFIX}gtest${CMAKE_STATIC_LIBRARY_SUFFIX} 124 AND EXISTS ${UNITTEST_DIR}/CMakeLists.txt) 125 add_subdirectory(${UNITTEST_DIR} third-party/unittest) 126 endif() 127 endif() 128 129 if(LLVM_LIT) 130 # Define the default arguments to use with 'lit', and an option for the user 131 # to override. 132 set(LIT_ARGS_DEFAULT "-sv") 133 if (MSVC OR XCODE) 134 set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar") 135 endif() 136 set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit") 137 138 get_errc_messages(LLVM_LIT_ERRC_MESSAGES) 139 140 # On Win32 hosts, provide an option to specify the path to the GnuWin32 tools. 141 if( WIN32 AND NOT CYGWIN ) 142 set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools") 143 endif() 144 else() 145 set(LLVM_INCLUDE_TESTS OFF) 146 endif() 147 148 umbrella_lit_testsuite_begin(check-all) 149 endif() # LLVM_INCLUDE_TESTS 150endif() # standalone 151 152# Make sure that our source directory is on the current cmake module path so that 153# we can include cmake files from this directory. 154list(INSERT CMAKE_MODULE_PATH 0 155 "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules" 156 "${LLVM_COMMON_CMAKE_UTILS}/Modules" 157 ) 158 159# This allows disabling clang's XML dependency even if LLVM finds libxml2. 160# By default, clang depends on libxml2 if LLVM does. 161option(CLANG_ENABLE_LIBXML2 "Whether libclang may depend on libxml2" 162 ${LLVM_ENABLE_LIBXML2}) 163 164if(CLANG_ENABLE_LIBXML2) 165 # Don't look for libxml if we're using MSan, since uninstrumented third party 166 # code may call MSan interceptors like strlen, leading to false positives. 167 if(NOT LLVM_USE_SANITIZER MATCHES "Memory.*") 168 set (LIBXML2_FOUND 0) 169 find_package(LibXml2 2.5.3 QUIET) 170 if (LIBXML2_FOUND) 171 set(CLANG_HAVE_LIBXML 1) 172 endif() 173 endif() 174endif() 175 176include(CheckIncludeFile) 177check_include_file(sys/resource.h CLANG_HAVE_RLIMITS) 178 179set(CLANG_RESOURCE_DIR "" CACHE STRING 180 "Relative directory from the Clang binary to its resource files.") 181 182set(C_INCLUDE_DIRS "" CACHE STRING 183 "Colon separated list of directories clang will search for headers.") 184 185set(GCC_INSTALL_PREFIX "" CACHE PATH "Directory where gcc is installed." ) 186set(DEFAULT_SYSROOT "" CACHE STRING 187 "Default <path> to all compiler invocations for --sysroot=<path>." ) 188 189set(ENABLE_LINKER_BUILD_ID OFF CACHE BOOL "pass --build-id to ld") 190 191set(ENABLE_X86_RELAX_RELOCATIONS ON CACHE BOOL 192 "enable x86 relax relocations by default") 193 194set(PPC_LINUX_DEFAULT_IEEELONGDOUBLE OFF CACHE BOOL 195 "Enable IEEE binary128 as default long double format on PowerPC Linux.") 196 197set(CLANG_SPAWN_CC1 OFF CACHE BOOL 198 "Whether clang should use a new process for the CC1 invocation") 199 200option(CLANG_DEFAULT_PIE_ON_LINUX "Default to -fPIE and -pie on linux-gnu" ON) 201 202set(CLANG_DEFAULT_LINKER "" CACHE STRING 203 "Default linker to use (linker name or absolute path, empty for platform default)") 204 205set(CLANG_DEFAULT_CXX_STDLIB "" CACHE STRING 206 "Default C++ stdlib to use (\"libstdc++\" or \"libc++\", empty for platform default") 207if (NOT(CLANG_DEFAULT_CXX_STDLIB STREQUAL "" OR 208 CLANG_DEFAULT_CXX_STDLIB STREQUAL "libstdc++" OR 209 CLANG_DEFAULT_CXX_STDLIB STREQUAL "libc++")) 210 message(WARNING "Resetting default C++ stdlib to use platform default") 211 set(CLANG_DEFAULT_CXX_STDLIB "" CACHE STRING 212 "Default C++ stdlib to use (\"libstdc++\" or \"libc++\", empty for platform default" FORCE) 213endif() 214 215set(CLANG_DEFAULT_RTLIB "" CACHE STRING 216 "Default runtime library to use (\"libgcc\" or \"compiler-rt\", empty for platform default)") 217if (NOT(CLANG_DEFAULT_RTLIB STREQUAL "" OR 218 CLANG_DEFAULT_RTLIB STREQUAL "libgcc" OR 219 CLANG_DEFAULT_RTLIB STREQUAL "compiler-rt")) 220 message(WARNING "Resetting default rtlib to use platform default") 221 set(CLANG_DEFAULT_RTLIB "" CACHE STRING 222 "Default runtime library to use (\"libgcc\" or \"compiler-rt\", empty for platform default)" FORCE) 223endif() 224 225set(CLANG_DEFAULT_UNWINDLIB "" CACHE STRING 226 "Default unwind library to use (\"none\" \"libgcc\" or \"libunwind\", empty to match runtime library.)") 227if (CLANG_DEFAULT_UNWINDLIB STREQUAL "") 228 if (CLANG_DEFAULT_RTLIB STREQUAL "libgcc") 229 set (CLANG_DEFAULT_UNWINDLIB "libgcc" CACHE STRING "" FORCE) 230 endif() 231endif() 232 233if (NOT(CLANG_DEFAULT_UNWINDLIB STREQUAL "" OR 234 CLANG_DEFAULT_UNWINDLIB STREQUAL "none" OR 235 CLANG_DEFAULT_UNWINDLIB STREQUAL "libgcc" OR 236 CLANG_DEFAULT_UNWINDLIB STREQUAL "libunwind")) 237 message(WARNING "Resetting default unwindlib to use platform default") 238 set(CLANG_DEFAULT_UNWINDLIB "" CACHE STRING 239 "Default unwind library to use (\"none\" \"libgcc\" or \"libunwind\", empty to match runtime library.)" FORCE) 240endif() 241 242set(CLANG_DEFAULT_OBJCOPY "objcopy" CACHE STRING 243 "Default objcopy executable to use.") 244 245set(CLANG_DEFAULT_OPENMP_RUNTIME "libomp" CACHE STRING 246 "Default OpenMP runtime used by -fopenmp.") 247 248set(CLANG_SYSTEMZ_DEFAULT_ARCH "z10" CACHE STRING "SystemZ Default Arch") 249 250set(CLANG_VENDOR ${PACKAGE_VENDOR} CACHE STRING 251 "Vendor-specific text for showing with version information.") 252 253set(CLANG_REPOSITORY_STRING "" CACHE STRING 254 "Vendor-specific text for showing the repository the source is taken from.") 255 256if(CLANG_REPOSITORY_STRING) 257 add_definitions(-DCLANG_REPOSITORY_STRING="${CLANG_REPOSITORY_STRING}") 258endif() 259 260set(CLANG_VENDOR_UTI "org.llvm.clang" CACHE STRING 261 "Vendor-specific uti.") 262 263set(CLANG_PYTHON_BINDINGS_VERSIONS "" CACHE STRING 264 "Python versions to install libclang python bindings for") 265 266set(CLANG_LINK_CLANG_DYLIB ${LLVM_LINK_LLVM_DYLIB} CACHE BOOL 267 "Link tools against libclang-cpp.so") 268 269if (NOT LLVM_LINK_LLVM_DYLIB AND CLANG_LINK_CLANG_DYLIB) 270 message(FATAL_ERROR "Cannot set CLANG_LINK_CLANG_DYLIB=ON when " 271 "LLVM_LINK_LLVM_DYLIB=OFF") 272endif() 273 274# The libdir suffix must exactly match whatever LLVM's configuration used. 275set(CLANG_LIBDIR_SUFFIX "${LLVM_LIBDIR_SUFFIX}") 276 277set(CLANG_TOOLS_INSTALL_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH 278 "Path for binary subdirectory (defaults to '${CMAKE_INSTALL_BINDIR}')") 279mark_as_advanced(CLANG_TOOLS_INSTALL_DIR) 280 281set(CLANG_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) 282set(CLANG_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) 283 284if( CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR AND NOT MSVC_IDE ) 285 message(FATAL_ERROR "In-source builds are not allowed. " 286"Please create a directory and run cmake " 287"from there, passing the path to this source directory as the last argument. " 288"This process created the file `CMakeCache.txt' and the directory " 289"`CMakeFiles'. Please delete them.") 290endif() 291 292# If CLANG_VERSION_* is specified, use it, if not use LLVM_VERSION_*. 293if(NOT DEFINED CLANG_VERSION_MAJOR) 294 set(CLANG_VERSION_MAJOR ${LLVM_VERSION_MAJOR}) 295endif() 296if(NOT DEFINED CLANG_VERSION_MINOR) 297 set(CLANG_VERSION_MINOR ${LLVM_VERSION_MINOR}) 298endif() 299if(NOT DEFINED CLANG_VERSION_PATCHLEVEL) 300 set(CLANG_VERSION_PATCHLEVEL ${LLVM_VERSION_PATCH}) 301endif() 302# Unlike PACKAGE_VERSION, CLANG_VERSION does not include LLVM_VERSION_SUFFIX. 303set(CLANG_VERSION "${CLANG_VERSION_MAJOR}.${CLANG_VERSION_MINOR}.${CLANG_VERSION_PATCHLEVEL}") 304message(STATUS "Clang version: ${CLANG_VERSION}") 305 306# Configure the Version.inc file. 307configure_file( 308 ${CMAKE_CURRENT_SOURCE_DIR}/include/clang/Basic/Version.inc.in 309 ${CMAKE_CURRENT_BINARY_DIR}/include/clang/Basic/Version.inc) 310 311# Add appropriate flags for GCC 312if (LLVM_COMPILER_IS_GCC_COMPATIBLE) 313 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-common -Woverloaded-virtual") 314 if (NOT "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang") 315 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-strict-aliasing") 316 endif () 317 318 # Enable -pedantic for Clang even if it's not enabled for LLVM. 319 if (NOT LLVM_ENABLE_PEDANTIC) 320 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic -Wno-long-long") 321 endif () 322 323 check_cxx_compiler_flag("-Werror -Wnested-anon-types" CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG) 324 if( CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG ) 325 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-nested-anon-types" ) 326 endif() 327endif () 328 329# Determine HOST_LINK_VERSION on Darwin. 330set(HOST_LINK_VERSION) 331if (APPLE AND NOT CMAKE_LINKER MATCHES ".*lld.*") 332 set(LD_V_OUTPUT) 333 execute_process( 334 COMMAND sh -c "${CMAKE_LINKER} -v 2>&1 | head -1" 335 RESULT_VARIABLE HAD_ERROR 336 OUTPUT_VARIABLE LD_V_OUTPUT 337 ) 338 if (HAD_ERROR) 339 message(FATAL_ERROR "${CMAKE_LINKER} failed with status ${HAD_ERROR}") 340 endif() 341 if ("${LD_V_OUTPUT}" MATCHES ".*ld64-([0-9.]+).*") 342 string(REGEX REPLACE ".*ld64-([0-9.]+).*" "\\1" HOST_LINK_VERSION ${LD_V_OUTPUT}) 343 elseif ("${LD_V_OUTPUT}" MATCHES "[^0-9]*([0-9.]+).*") 344 string(REGEX REPLACE "[^0-9]*([0-9.]+).*" "\\1" HOST_LINK_VERSION ${LD_V_OUTPUT}) 345 endif() 346 message(STATUS "Host linker version: ${HOST_LINK_VERSION}") 347endif() 348 349include(CMakeParseArguments) 350include(AddClang) 351 352set(CMAKE_INCLUDE_CURRENT_DIR ON) 353 354include_directories(BEFORE 355 ${CMAKE_CURRENT_BINARY_DIR}/include 356 ${CMAKE_CURRENT_SOURCE_DIR}/include 357 ) 358 359if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY) 360 install(DIRECTORY include/clang include/clang-c 361 DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}" 362 COMPONENT clang-headers 363 FILES_MATCHING 364 PATTERN "*.def" 365 PATTERN "*.h" 366 PATTERN "config.h" EXCLUDE 367 ) 368 369 install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/include/clang 370 DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}" 371 COMPONENT clang-headers 372 FILES_MATCHING 373 PATTERN "CMakeFiles" EXCLUDE 374 PATTERN "*.inc" 375 PATTERN "*.h" 376 ) 377 378 # Installing the headers needs to depend on generating any public 379 # tablegen'd headers. 380 add_custom_target(clang-headers DEPENDS clang-tablegen-targets) 381 set_target_properties(clang-headers PROPERTIES FOLDER "Misc") 382 if(NOT LLVM_ENABLE_IDE) 383 add_llvm_install_targets(install-clang-headers 384 DEPENDS clang-headers 385 COMPONENT clang-headers) 386 endif() 387 388 add_custom_target(bash-autocomplete DEPENDS utils/bash-autocomplete.sh) 389 install(FILES utils/bash-autocomplete.sh 390 DESTINATION "${CMAKE_INSTALL_DATADIR}/clang" 391 COMPONENT bash-autocomplete) 392 if(NOT LLVM_ENABLE_IDE) 393 add_llvm_install_targets(install-bash-autocomplete 394 DEPENDS bash-autocomplete 395 COMPONENT bash-autocomplete) 396 endif() 397endif() 398 399option(CLANG_BUILD_TOOLS 400 "Build the Clang tools. If OFF, just generate build targets." ON) 401 402if(LLVM_ENABLE_PLUGINS OR LLVM_EXPORT_SYMBOLS_FOR_PLUGINS) 403 set(HAVE_CLANG_PLUGIN_SUPPORT ON) 404else() 405 set(HAVE_CLANG_PLUGIN_SUPPORT OFF) 406endif() 407CMAKE_DEPENDENT_OPTION(CLANG_PLUGIN_SUPPORT 408 "Build clang with plugin support" ON 409 "HAVE_CLANG_PLUGIN_SUPPORT" OFF) 410 411# If libstdc++ is statically linked, clang-repl needs to statically link libstdc++ 412# itself, which is not possible in many platforms because of current limitations in 413# JIT stack. (more platforms need to be supported by JITLink) 414if(NOT LLVM_STATIC_LINK_CXX_STDLIB) 415 set(HAVE_CLANG_REPL_SUPPORT ON) 416endif() 417 418option(CLANG_ENABLE_ARCMT "Build ARCMT." ON) 419option(CLANG_ENABLE_STATIC_ANALYZER 420 "Include static analyzer in clang binary." ON) 421 422option(CLANG_ENABLE_PROTO_FUZZER "Build Clang protobuf fuzzer." OFF) 423 424if(NOT CLANG_ENABLE_STATIC_ANALYZER AND CLANG_ENABLE_ARCMT) 425 message(FATAL_ERROR "Cannot disable static analyzer while enabling ARCMT or Z3") 426endif() 427 428if(CLANG_ENABLE_ARCMT) 429 set(CLANG_ENABLE_OBJC_REWRITER ON) 430endif() 431 432# This option is a stop-gap, we should commit to removing this as 433# soon as possible. See discussion: 434# https://discourse.llvm.org/t/rationale-for-removing-versioned-libclang-middle-ground-to-keep-it-behind-option/ 435option(CLANG_FORCE_MATCHING_LIBCLANG_SOVERSION 436 "Force the SOVERSION of libclang to be equal to CLANG_MAJOR" ON) 437 438# Clang version information 439set(CLANG_EXECUTABLE_VERSION 440 "${CLANG_VERSION_MAJOR}" CACHE STRING 441 "Major version number that will be appended to the clang executable name") 442set(LIBCLANG_LIBRARY_VERSION 443 "${CLANG_VERSION_MAJOR}" CACHE STRING 444 "Major version number that will be appended to the libclang library") 445mark_as_advanced(CLANG_EXECUTABLE_VERSION LIBCLANG_LIBRARY_VERSION) 446 447option(CLANG_INCLUDE_TESTS 448 "Generate build targets for the Clang unit tests." 449 ${LLVM_INCLUDE_TESTS}) 450 451option(CLANG_ENABLE_HLSL "Include HLSL build products" Off) 452# While HLSL support is experimental this should stay hidden. 453mark_as_advanced(CLANG_ENABLE_HLSL) 454 455add_subdirectory(utils/TableGen) 456 457# Export CLANG_TABLEGEN_EXE for use by flang docs. 458set(CLANG_TABLEGEN_EXE "${CLANG_TABLEGEN_EXE}" CACHE INTERNAL "") 459 460add_subdirectory(include) 461 462# All targets below may depend on all tablegen'd files. 463get_property(CLANG_TABLEGEN_TARGETS GLOBAL PROPERTY CLANG_TABLEGEN_TARGETS) 464add_custom_target(clang-tablegen-targets 465 DEPENDS 466 omp_gen 467 ${CLANG_TABLEGEN_TARGETS}) 468set_target_properties(clang-tablegen-targets PROPERTIES FOLDER "Misc") 469list(APPEND LLVM_COMMON_DEPENDS clang-tablegen-targets) 470 471# Force target to be built as soon as possible. Clang modules builds depend 472# header-wise on it as they ship all headers from the umbrella folders. Building 473# an entire module might include header, which depends on intrinsics_gen. 474if(LLVM_ENABLE_MODULES) 475 list(APPEND LLVM_COMMON_DEPENDS intrinsics_gen) 476endif() 477 478add_subdirectory(lib) 479add_subdirectory(tools) 480add_subdirectory(runtime) 481 482option(CLANG_BUILD_EXAMPLES "Build CLANG example programs by default." OFF) 483add_subdirectory(examples) 484 485if(APPLE) 486 # this line is needed as a cleanup to ensure that any CMakeCaches with the old 487 # default value get updated to the new default. 488 if(CLANG_ORDER_FILE STREQUAL "") 489 unset(CLANG_ORDER_FILE CACHE) 490 unset(CLANG_ORDER_FILE) 491 endif() 492 493 494 set(CLANG_ORDER_FILE ${CMAKE_CURRENT_BINARY_DIR}/clang.order CACHE FILEPATH 495 "Order file to use when compiling clang in order to improve startup time (Darwin Only - requires ld64).") 496 497 if(NOT EXISTS ${CLANG_ORDER_FILE}) 498 string(FIND "${CLANG_ORDER_FILE}" "${CMAKE_CURRENT_BINARY_DIR}" PATH_START) 499 if(PATH_START EQUAL 0) 500 file(WRITE ${CLANG_ORDER_FILE} "\n") 501 else() 502 message(FATAL_ERROR "Specified order file '${CLANG_ORDER_FILE}' does not exist.") 503 endif() 504 endif() 505endif() 506 507 508if( CLANG_INCLUDE_TESTS ) 509 if(EXISTS ${LLVM_THIRD_PARTY_DIR}/unittest/googletest/include/gtest/gtest.h) 510 add_subdirectory(unittests) 511 list(APPEND CLANG_TEST_DEPS ClangUnitTests) 512 list(APPEND CLANG_TEST_PARAMS 513 clang_unit_site_config=${CMAKE_CURRENT_BINARY_DIR}/test/Unit/lit.site.cfg 514 ) 515 endif() 516 add_subdirectory(test) 517 add_subdirectory(bindings/python/tests) 518 519 if(CLANG_BUILT_STANDALONE) 520 umbrella_lit_testsuite_end(check-all) 521 endif() 522 add_subdirectory(utils/perf-training) 523endif() 524 525option(CLANG_INCLUDE_DOCS "Generate build targets for the Clang docs." 526 ${LLVM_INCLUDE_DOCS}) 527if( CLANG_INCLUDE_DOCS ) 528 add_subdirectory(docs) 529endif() 530 531# Custom target to install all clang libraries. 532add_custom_target(clang-libraries) 533set_target_properties(clang-libraries PROPERTIES FOLDER "Misc") 534 535if(NOT LLVM_ENABLE_IDE) 536 add_llvm_install_targets(install-clang-libraries 537 DEPENDS clang-libraries 538 COMPONENT clang-libraries) 539endif() 540 541get_property(CLANG_LIBS GLOBAL PROPERTY CLANG_LIBS) 542if(CLANG_LIBS) 543 list(REMOVE_DUPLICATES CLANG_LIBS) 544 foreach(lib ${CLANG_LIBS}) 545 add_dependencies(clang-libraries ${lib}) 546 if(NOT LLVM_ENABLE_IDE) 547 add_dependencies(install-clang-libraries install-${lib}) 548 add_dependencies(install-clang-libraries-stripped install-${lib}-stripped) 549 endif() 550 endforeach() 551endif() 552 553add_subdirectory(cmake/modules) 554 555if(CLANG_STAGE) 556 message(STATUS "Setting current clang stage to: ${CLANG_STAGE}") 557endif() 558 559if (CLANG_ENABLE_BOOTSTRAP) 560 include(ExternalProject) 561 562 add_custom_target(clang-bootstrap-deps DEPENDS clang) 563 564 if(NOT CLANG_STAGE) 565 set(CLANG_STAGE stage1) 566 endif() 567 568 string(REGEX MATCH "stage([0-9]*)" MATCHED_STAGE "${CLANG_STAGE}") 569 if(MATCHED_STAGE) 570 if(NOT LLVM_BUILD_INSTRUMENTED) 571 math(EXPR STAGE_NUM "${CMAKE_MATCH_1} + 1") 572 set(NEXT_CLANG_STAGE stage${STAGE_NUM}) 573 else() 574 set(NEXT_CLANG_STAGE stage${CMAKE_MATCH_1}) 575 endif() 576 else() 577 set(NEXT_CLANG_STAGE bootstrap) 578 endif() 579 580 if(BOOTSTRAP_LLVM_BUILD_INSTRUMENTED) 581 set(NEXT_CLANG_STAGE ${NEXT_CLANG_STAGE}-instrumented) 582 endif() 583 message(STATUS "Setting next clang stage to: ${NEXT_CLANG_STAGE}") 584 585 586 set(STAMP_DIR ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-stamps/) 587 set(BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-bins/) 588 589 if(BOOTSTRAP_LLVM_ENABLE_LLD) 590 # adding lld to clang-bootstrap-deps without having it enabled in 591 # LLVM_ENABLE_PROJECTS just generates a cryptic error message. 592 if (NOT "lld" IN_LIST LLVM_ENABLE_PROJECTS) 593 message(FATAL_ERROR "LLD is enabled in the bootstrap build, but lld is not in LLVM_ENABLE_PROJECTS") 594 endif() 595 add_dependencies(clang-bootstrap-deps lld) 596 endif() 597 598 # If the next stage is LTO we need to depend on LTO and possibly lld or LLVMgold 599 if(BOOTSTRAP_LLVM_ENABLE_LTO OR LLVM_ENABLE_LTO AND NOT LLVM_BUILD_INSTRUMENTED) 600 if(APPLE) 601 add_dependencies(clang-bootstrap-deps LTO) 602 # on Darwin we need to set DARWIN_LTO_LIBRARY so that -flto will work 603 # using the just-built compiler, and we need to override DYLD_LIBRARY_PATH 604 # so that the host object file tools will use the just-built libLTO. 605 # However if System Integrity Protection is enabled the DYLD variables 606 # will be scrubbed from the environment of any base system commands. This 607 # includes /bin/sh, which ninja uses when executing build commands. To 608 # work around the envar being filtered away we pass it in as a CMake 609 # variable, and have LLVM's CMake append the envar to the archiver calls. 610 set(LTO_LIBRARY -DDARWIN_LTO_LIBRARY=${LLVM_SHLIB_OUTPUT_INTDIR}/libLTO.dylib 611 -DDYLD_LIBRARY_PATH=${LLVM_LIBRARY_OUTPUT_INTDIR}) 612 elseif(NOT WIN32) 613 add_dependencies(clang-bootstrap-deps llvm-ar llvm-ranlib) 614 if(NOT BOOTSTRAP_LLVM_ENABLE_LLD AND LLVM_BINUTILS_INCDIR) 615 add_dependencies(clang-bootstrap-deps LLVMgold) 616 endif() 617 set(${CLANG_STAGE}_AR -DCMAKE_AR=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ar) 618 set(${CLANG_STAGE}_RANLIB -DCMAKE_RANLIB=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ranlib) 619 endif() 620 endif() 621 622 if(CLANG_BOOTSTRAP_EXTRA_DEPS) 623 add_dependencies(clang-bootstrap-deps ${CLANG_BOOTSTRAP_EXTRA_DEPS}) 624 endif() 625 626 add_custom_target(${NEXT_CLANG_STAGE}-clear 627 DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-cleared 628 ) 629 add_custom_command( 630 OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-cleared 631 DEPENDS clang-bootstrap-deps 632 COMMAND ${CMAKE_COMMAND} -E remove_directory ${BINARY_DIR} 633 COMMAND ${CMAKE_COMMAND} -E make_directory ${BINARY_DIR} 634 COMMAND ${CMAKE_COMMAND} -E remove_directory ${STAMP_DIR} 635 COMMAND ${CMAKE_COMMAND} -E make_directory ${STAMP_DIR} 636 COMMENT "Clobberring ${NEXT_CLANG_STAGE} build and stamp directories" 637 ) 638 639 if(CMAKE_VERBOSE_MAKEFILE) 640 set(verbose -DCMAKE_VERBOSE_MAKEFILE=On) 641 endif() 642 643 set(_BOOTSTRAP_DEFAULT_PASSTHROUGH 644 PACKAGE_VERSION 645 PACKAGE_VENDOR 646 LLVM_VERSION_MAJOR 647 LLVM_VERSION_MINOR 648 LLVM_VERSION_PATCH 649 CLANG_VERSION_MAJOR 650 CLANG_VERSION_MINOR 651 CLANG_VERSION_PATCHLEVEL 652 CLANG_VENDOR 653 LLVM_VERSION_SUFFIX 654 LLVM_BINUTILS_INCDIR 655 CLANG_REPOSITORY_STRING 656 CMAKE_C_COMPILER_LAUNCHER 657 CMAKE_CXX_COMPILER_LAUNCHER 658 CMAKE_MAKE_PROGRAM 659 CMAKE_OSX_ARCHITECTURES 660 CMAKE_BUILD_TYPE 661 LLVM_ENABLE_PROJECTS 662 LLVM_ENABLE_RUNTIMES) 663 664 # We don't need to depend on compiler-rt/libcxx if we're building instrumented 665 # because the next stage will use the same compiler used to build this stage. 666 if(NOT LLVM_BUILD_INSTRUMENTED) 667 if(TARGET compiler-rt) 668 add_dependencies(clang-bootstrap-deps compiler-rt) 669 endif() 670 if(TARGET cxx-headers) 671 add_dependencies(clang-bootstrap-deps cxx-headers) 672 endif() 673 endif() 674 675 set(C_COMPILER "clang") 676 set(CXX_COMPILER "clang++") 677 if(WIN32) 678 set(C_COMPILER "clang-cl.exe") 679 set(CXX_COMPILER "clang-cl.exe") 680 endif() 681 682 set(COMPILER_OPTIONS 683 -DCMAKE_CXX_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/${CXX_COMPILER} 684 -DCMAKE_C_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/${C_COMPILER} 685 -DCMAKE_ASM_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/${C_COMPILER} 686 -DCMAKE_ASM_COMPILER_ID=Clang) 687 688 # cmake requires CMAKE_LINKER to be specified if the compiler is MSVC-like, 689 # otherwise it defaults the linker to be link.exe. 690 if(BOOTSTRAP_LLVM_ENABLE_LLD) 691 if((WIN32 AND NOT BOOTSTRAP_CMAKE_SYSTEM_NAME) OR BOOTSTRAP_CMAKE_SYSTEM_NAME STREQUAL "Windows") 692 set(${CLANG_STAGE}_LINKER -DCMAKE_LINKER=${LLVM_RUNTIME_OUTPUT_INTDIR}/lld-link${CMAKE_EXECUTABLE_SUFFIX}) 693 endif() 694 endif() 695 696 if(BOOTSTRAP_CMAKE_SYSTEM_NAME) 697 set(${CLANG_STAGE}_TABLEGEN 698 -DLLVM_TABLEGEN=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-tblgen 699 -DCLANG_TABLEGEN=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang-tblgen) 700 if(BOOTSTRAP_CMAKE_SYSTEM_NAME STREQUAL "Linux") 701 if(BOOTSTRAP_LLVM_ENABLE_LLD) 702 set(${CLANG_STAGE}_LINKER -DCMAKE_LINKER=${LLVM_RUNTIME_OUTPUT_INTDIR}/ld.lld) 703 endif() 704 if(NOT BOOTSTRAP_LLVM_ENABLE_LTO) 705 add_dependencies(clang-bootstrap-deps llvm-ar llvm-ranlib) 706 set(${CLANG_STAGE}_AR -DCMAKE_AR=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ar) 707 set(${CLANG_STAGE}_RANLIB -DCMAKE_RANLIB=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ranlib) 708 endif() 709 add_dependencies(clang-bootstrap-deps llvm-objcopy llvm-strip) 710 set(${CLANG_STAGE}_OBJCOPY -DCMAKE_OBJCOPY=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-objcopy) 711 set(${CLANG_STAGE}_STRIP -DCMAKE_STRIP=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-strip) 712 set(${CLANG_STAGE}_READELF -DCMAKE_READELF=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-readelf) 713 endif() 714 endif() 715 716 if(BOOTSTRAP_LLVM_BUILD_INSTRUMENTED) 717 add_dependencies(clang-bootstrap-deps llvm-profdata) 718 set(PGO_OPT -DLLVM_PROFDATA=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-profdata) 719 endif() 720 721 if(LLVM_BUILD_INSTRUMENTED) 722 add_dependencies(clang-bootstrap-deps generate-profdata) 723 set(PGO_OPT -DLLVM_PROFDATA_FILE=${CMAKE_CURRENT_BINARY_DIR}/utils/perf-training/clang.profdata) 724 # Use the current tools for LTO instead of the instrumented ones 725 list(APPEND _BOOTSTRAP_DEFAULT_PASSTHROUGH 726 CMAKE_CXX_COMPILER 727 CMAKE_C_COMPILER 728 CMAKE_ASM_COMPILER 729 CMAKE_AR 730 CMAKE_RANLIB 731 DARWIN_LTO_LIBRARY 732 DYLD_LIBRARY_PATH) 733 734 set(COMPILER_OPTIONS) 735 set(LTO_LIBRARY) 736 set(LTO_AR) 737 set(LTO_RANLIB) 738 endif() 739 740 # Populate the passthrough variables 741 foreach(variableName ${CLANG_BOOTSTRAP_PASSTHROUGH} ${_BOOTSTRAP_DEFAULT_PASSTHROUGH}) 742 if(DEFINED ${variableName}) 743 if("${${variableName}}" STREQUAL "") 744 set(value "") 745 else() 746 string(REPLACE ";" "|" value "${${variableName}}") 747 endif() 748 list(APPEND PASSTHROUGH_VARIABLES 749 -D${variableName}=${value}) 750 endif() 751 endforeach() 752 753 # Find all variables that start with BOOTSTRAP_ and populate a variable with 754 # them. 755 get_cmake_property(variableNames VARIABLES) 756 foreach(variableName ${variableNames}) 757 if(variableName MATCHES "^BOOTSTRAP_") 758 string(SUBSTRING ${variableName} 10 -1 varName) 759 string(REPLACE ";" "|" value "${${variableName}}") 760 list(APPEND PASSTHROUGH_VARIABLES 761 -D${varName}=${value}) 762 endif() 763 if(${variableName} AND variableName MATCHES "LLVM_EXTERNAL_.*_SOURCE_DIR") 764 list(APPEND PASSTHROUGH_VARIABLES 765 -D${variableName}=${${variableName}}) 766 endif() 767 endforeach() 768 769 # Build arguments for native tool used in CMake. 770 set(build_configuration "$<CONFIG>") 771 set(build_tool_args "${LLVM_EXTERNAL_PROJECT_BUILD_TOOL_ARGS}") 772 if(NOT build_tool_args STREQUAL "") 773 string(PREPEND build_tool_args "-- ") 774 separate_arguments(build_tool_args UNIX_COMMAND "${build_tool_args}") 775 endif() 776 777 ExternalProject_Add(${NEXT_CLANG_STAGE} 778 DEPENDS clang-bootstrap-deps 779 PREFIX ${NEXT_CLANG_STAGE} 780 SOURCE_DIR ${CMAKE_SOURCE_DIR} 781 STAMP_DIR ${STAMP_DIR} 782 BINARY_DIR ${BINARY_DIR} 783 EXCLUDE_FROM_ALL 1 784 CMAKE_ARGS 785 # We shouldn't need to set this here, but INSTALL_DIR doesn't 786 # seem to work, so instead I'm passing this through 787 -DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX} 788 ${PASSTHROUGH_VARIABLES} 789 ${CLANG_BOOTSTRAP_CMAKE_ARGS} 790 -DCLANG_STAGE=${NEXT_CLANG_STAGE} 791 ${COMPILER_OPTIONS} 792 ${${CLANG_STAGE}_TABLEGEN} 793 ${LTO_LIBRARY} ${verbose} ${PGO_OPT} 794 ${${CLANG_STAGE}_LINKER} 795 ${${CLANG_STAGE}_AR} 796 ${${CLANG_STAGE}_RANLIB} 797 ${${CLANG_STAGE}_OBJCOPY} 798 ${${CLANG_STAGE}_STRIP} 799 BUILD_COMMAND ${CMAKE_COMMAND} --build ${BINARY_DIR} 800 --config ${build_configuration} 801 ${build_tool_args} 802 INSTALL_COMMAND "" 803 STEP_TARGETS configure build 804 USES_TERMINAL_CONFIGURE 1 805 USES_TERMINAL_BUILD 1 806 USES_TERMINAL_INSTALL 1 807 LIST_SEPARATOR | 808 ) 809 810 # exclude really-install from main target 811 set_target_properties(${NEXT_CLANG_STAGE} PROPERTIES _EP_really-install_EXCLUDE_FROM_MAIN On) 812 ExternalProject_Add_Step(${NEXT_CLANG_STAGE} really-install 813 COMMAND ${CMAKE_COMMAND} --build <BINARY_DIR> --target install 814 COMMENT "Performing install step for '${NEXT_CLANG_STAGE}'" 815 DEPENDEES build 816 USES_TERMINAL 1 817 ) 818 ExternalProject_Add_StepTargets(${NEXT_CLANG_STAGE} really-install) 819 add_custom_target(${NEXT_CLANG_STAGE}-install DEPENDS ${NEXT_CLANG_STAGE}-really-install) 820 821 if(NOT CLANG_BOOTSTRAP_TARGETS) 822 set(CLANG_BOOTSTRAP_TARGETS check-llvm check-clang check-all) 823 endif() 824 foreach(target ${CLANG_BOOTSTRAP_TARGETS}) 825 # Install targets have side effects, so we always want to execute them. 826 # "install" is reserved by CMake and can't be used as a step name for 827 # ExternalProject_Add_Step, so we can match against "^install-" instead of 828 # "^install" to get a tighter match. CMake's installation scripts already 829 # skip up-to-date files, so there's no behavior change if you install to the 830 # same destination multiple times. 831 if(target MATCHES "^install-") 832 set(step_always ON) 833 else() 834 set(step_always OFF) 835 endif() 836 837 ExternalProject_Add_Step(${NEXT_CLANG_STAGE} ${target} 838 COMMAND ${CMAKE_COMMAND} --build <BINARY_DIR> --target ${target} 839 COMMENT "Performing ${target} for '${NEXT_CLANG_STAGE}'" 840 DEPENDEES configure 841 ALWAYS ${step_always} 842 EXCLUDE_FROM_MAIN ON 843 USES_TERMINAL 1 844 ) 845 846 if(target MATCHES "^stage[0-9]*") 847 add_custom_target(${target} DEPENDS ${NEXT_CLANG_STAGE}-${target}) 848 endif() 849 850 ExternalProject_Add_StepTargets(${NEXT_CLANG_STAGE} ${target}) 851 endforeach() 852endif() 853 854if (CLANG_BOLT_INSTRUMENT AND NOT LLVM_BUILD_INSTRUMENTED) 855 set(CLANG_PATH ${LLVM_RUNTIME_OUTPUT_INTDIR}/clang) 856 set(CLANGXX_PATH ${CLANG_PATH}++) 857 set(CLANG_INSTRUMENTED ${CLANG_PATH}-bolt.inst) 858 set(CLANGXX_INSTRUMENTED ${CLANGXX_PATH}-bolt.inst) 859 set(CLANG_OPTIMIZED ${CLANG_PATH}-bolt) 860 set(CLANGXX_OPTIMIZED ${CLANGXX_PATH}-bolt) 861 862 # Instrument clang with BOLT 863 add_custom_target(clang-instrumented 864 DEPENDS ${CLANG_INSTRUMENTED} 865 ) 866 add_custom_command(OUTPUT ${CLANG_INSTRUMENTED} 867 DEPENDS clang llvm-bolt 868 COMMAND llvm-bolt ${CLANG_PATH} -o ${CLANG_INSTRUMENTED} 869 -instrument --instrumentation-file-append-pid 870 --instrumentation-file=${CMAKE_CURRENT_BINARY_DIR}/prof.fdata 871 COMMENT "Instrumenting clang binary with BOLT" 872 VERBATIM 873 ) 874 875 # Make a symlink from clang-bolt.inst to clang++-bolt.inst 876 add_custom_target(clang++-instrumented 877 DEPENDS ${CLANGXX_INSTRUMENTED} 878 ) 879 add_custom_command(OUTPUT ${CLANGXX_INSTRUMENTED} 880 DEPENDS clang-instrumented 881 COMMAND ${CMAKE_COMMAND} -E create_symlink 882 ${CLANG_INSTRUMENTED} 883 ${CLANGXX_INSTRUMENTED} 884 COMMENT "Creating symlink from BOLT instrumented clang to clang++" 885 VERBATIM 886 ) 887 888 # Build specified targets with instrumented Clang to collect the profile 889 set(STAMP_DIR ${CMAKE_CURRENT_BINARY_DIR}/bolt-instrumented-clang-stamps/) 890 set(BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/bolt-instrumented-clang-bins/) 891 set(build_configuration "$<CONFIG>") 892 include(ExternalProject) 893 ExternalProject_Add(bolt-instrumentation-profile 894 DEPENDS clang++-instrumented 895 PREFIX bolt-instrumentation-profile 896 SOURCE_DIR ${CMAKE_SOURCE_DIR} 897 STAMP_DIR ${STAMP_DIR} 898 BINARY_DIR ${BINARY_DIR} 899 EXCLUDE_FROM_ALL 1 900 CMAKE_ARGS 901 ${CLANG_BOLT_INSTRUMENT_EXTRA_CMAKE_FLAGS} 902 # We shouldn't need to set this here, but INSTALL_DIR doesn't 903 # seem to work, so instead I'm passing this through 904 -DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX} 905 -DCMAKE_C_COMPILER=${CLANG_INSTRUMENTED} 906 -DCMAKE_CXX_COMPILER=${CLANGXX_INSTRUMENTED} 907 -DCMAKE_ASM_COMPILER=${CLANG_INSTRUMENTED} 908 -DCMAKE_ASM_COMPILER_ID=Clang 909 -DCMAKE_BUILD_TYPE=Release 910 -DLLVM_ENABLE_PROJECTS=${CLANG_BOLT_INSTRUMENT_PROJECTS} 911 -DLLVM_TARGETS_TO_BUILD=${LLVM_TARGETS_TO_BUILD} 912 BUILD_COMMAND ${CMAKE_COMMAND} --build ${BINARY_DIR} 913 --config ${build_configuration} 914 --target ${CLANG_BOLT_INSTRUMENT_TARGETS} 915 INSTALL_COMMAND "" 916 STEP_TARGETS configure build 917 USES_TERMINAL_CONFIGURE 1 918 USES_TERMINAL_BUILD 1 919 USES_TERMINAL_INSTALL 1 920 ) 921 922 # Merge profiles into one using merge-fdata 923 add_custom_target(clang-bolt-profile 924 DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/prof.fdata 925 ) 926 add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/prof.fdata 927 DEPENDS merge-fdata bolt-instrumentation-profile-build 928 WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR} 929 COMMAND ${Python3_EXECUTABLE} 930 ${CMAKE_CURRENT_SOURCE_DIR}/utils/perf-training/perf-helper.py merge-fdata 931 $<TARGET_FILE:merge-fdata> ${CMAKE_CURRENT_BINARY_DIR}/prof.fdata 932 ${CMAKE_CURRENT_BINARY_DIR} 933 COMMENT "Preparing BOLT profile" 934 VERBATIM 935 ) 936 937 # Optimize original (pre-bolt) Clang using the collected profile 938 add_custom_target(clang-bolt 939 DEPENDS ${CLANG_OPTIMIZED} 940 ) 941 add_custom_command(OUTPUT ${CLANG_OPTIMIZED} 942 DEPENDS clang-bolt-profile 943 COMMAND llvm-bolt ${CLANG_PATH} 944 -o ${CLANG_OPTIMIZED} 945 -data ${CMAKE_CURRENT_BINARY_DIR}/prof.fdata 946 -reorder-blocks=ext-tsp -reorder-functions=hfsort+ -split-functions 947 -split-all-cold -split-eh -dyno-stats -icf=1 -use-gnu-stack 948 COMMENT "Optimizing Clang with BOLT" 949 VERBATIM 950 ) 951 952 # Make a symlink from clang-bolt to clang++-bolt 953 add_custom_target(clang++-bolt 954 DEPENDS ${CLANGXX_OPTIMIZED} 955 ) 956 add_custom_command(OUTPUT ${CLANGXX_OPTIMIZED} 957 DEPENDS clang-bolt 958 COMMAND ${CMAKE_COMMAND} -E create_symlink 959 ${CLANG_OPTIMIZED} 960 ${CLANGXX_OPTIMIZED} 961 COMMENT "Creating symlink from BOLT optimized clang to clang++" 962 VERBATIM 963 ) 964endif() 965 966if (LLVM_ADD_NATIVE_VISUALIZERS_TO_SOLUTION) 967 add_subdirectory(utils/ClangVisualizers) 968endif() 969add_subdirectory(utils/hmaptool) 970 971if(CLANG_BUILT_STANDALONE) 972 llvm_distribution_add_targets() 973 process_llvm_pass_plugins() 974endif() 975 976set(CLANG_INSTALL_LIBDIR_BASENAME "lib${CLANG_LIBDIR_SUFFIX}") 977 978configure_file( 979 ${CLANG_SOURCE_DIR}/include/clang/Config/config.h.cmake 980 ${CLANG_BINARY_DIR}/include/clang/Config/config.h) 981