1cmake_minimum_required(VERSION 3.4.3) 2 3if(POLICY CMP0075) 4 cmake_policy(SET CMP0075 NEW) 5endif() 6 7# If we are not building as a part of LLVM, build Clang as an 8# standalone project, using LLVM as an external library: 9if( CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR ) 10 project(Clang) 11 12 # Rely on llvm-config. 13 set(CONFIG_OUTPUT) 14 if(LLVM_CONFIG) 15 set (LLVM_CONFIG_FOUND 1) 16 message(STATUS "Found LLVM_CONFIG as ${LLVM_CONFIG}") 17 message(DEPRECATION "Using llvm-config to detect the LLVM installation is \ 18 deprecated. The installed cmake files should be used \ 19 instead. CMake should be able to detect your LLVM install \ 20 automatically, but you can also use LLVM_DIR to specify \ 21 the path containing LLVMConfig.cmake.") 22 set(CONFIG_COMMAND ${LLVM_CONFIG} 23 "--assertion-mode" 24 "--bindir" 25 "--libdir" 26 "--includedir" 27 "--prefix" 28 "--src-root" 29 "--cmakedir") 30 execute_process( 31 COMMAND ${CONFIG_COMMAND} 32 RESULT_VARIABLE HAD_ERROR 33 OUTPUT_VARIABLE CONFIG_OUTPUT 34 ) 35 if(NOT HAD_ERROR) 36 string(REGEX REPLACE 37 "[ \t]*[\r\n]+[ \t]*" ";" 38 CONFIG_OUTPUT ${CONFIG_OUTPUT}) 39 else() 40 string(REPLACE ";" " " CONFIG_COMMAND_STR "${CONFIG_COMMAND}") 41 message(STATUS "${CONFIG_COMMAND_STR}") 42 message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}") 43 endif() 44 45 list(GET CONFIG_OUTPUT 0 ENABLE_ASSERTIONS) 46 list(GET CONFIG_OUTPUT 1 TOOLS_BINARY_DIR) 47 list(GET CONFIG_OUTPUT 2 LIBRARY_DIR) 48 list(GET CONFIG_OUTPUT 3 INCLUDE_DIR) 49 list(GET CONFIG_OUTPUT 4 LLVM_OBJ_ROOT) 50 list(GET CONFIG_OUTPUT 5 MAIN_SRC_DIR) 51 list(GET CONFIG_OUTPUT 6 LLVM_CONFIG_CMAKE_PATH) 52 53 # Normalize LLVM_CMAKE_PATH. --cmakedir might contain backslashes. 54 # CMake assumes slashes as PATH. 55 file(TO_CMAKE_PATH ${LLVM_CONFIG_CMAKE_PATH} LLVM_CMAKE_PATH) 56 endif() 57 58 59 if(NOT MSVC_IDE) 60 set(LLVM_ENABLE_ASSERTIONS ${ENABLE_ASSERTIONS} 61 CACHE BOOL "Enable assertions") 62 # Assertions should follow llvm-config's. 63 mark_as_advanced(LLVM_ENABLE_ASSERTIONS) 64 endif() 65 66 find_package(LLVM REQUIRED HINTS "${LLVM_CMAKE_PATH}") 67 list(APPEND CMAKE_MODULE_PATH ${LLVM_DIR}) 68 69 # We can't check LLVM_CONFIG here, because find_package(LLVM ...) also sets 70 # LLVM_CONFIG. 71 if (NOT LLVM_CONFIG_FOUND) 72 # Pull values from LLVMConfig.cmake. We can drop this once the llvm-config 73 # path is removed. 74 set(TOOLS_BINARY_DIR ${LLVM_TOOLS_BINARY_DIR}) 75 set(LIBRARY_DIR ${LLVM_LIBRARY_DIR}) 76 set(INCLUDE_DIR ${LLVM_INCLUDE_DIR}) 77 set(LLVM_OBJ_DIR ${LLVM_BINARY_DIR}) 78 # The LLVM_CMAKE_PATH variable is set when doing non-standalone builds and 79 # used in this project, so we need to make sure we set this value. 80 # FIXME: LLVM_CMAKE_DIR comes from LLVMConfig.cmake. We should rename 81 # LLVM_CMAKE_PATH to LLVM_CMAKE_DIR throughout the project. 82 set(LLVM_CMAKE_PATH ${LLVM_CMAKE_DIR}) 83 endif() 84 85 set(LLVM_TOOLS_BINARY_DIR ${TOOLS_BINARY_DIR} CACHE PATH "Path to llvm/bin") 86 set(LLVM_LIBRARY_DIR ${LIBRARY_DIR} CACHE PATH "Path to llvm/lib") 87 set(LLVM_MAIN_INCLUDE_DIR ${INCLUDE_DIR} CACHE PATH "Path to llvm/include") 88 set(LLVM_BINARY_DIR ${LLVM_OBJ_ROOT} CACHE PATH "Path to LLVM build tree") 89 set(LLVM_MAIN_SRC_DIR ${MAIN_SRC_DIR} CACHE PATH "Path to LLVM source tree") 90 91 find_program(LLVM_TABLEGEN_EXE "llvm-tblgen" ${LLVM_TOOLS_BINARY_DIR} 92 NO_DEFAULT_PATH) 93 94 # They are used as destination of target generators. 95 set(LLVM_RUNTIME_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/bin) 96 set(LLVM_LIBRARY_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX}) 97 if(WIN32 OR CYGWIN) 98 # DLL platform -- put DLLs into bin. 99 set(LLVM_SHLIB_OUTPUT_INTDIR ${LLVM_RUNTIME_OUTPUT_INTDIR}) 100 else() 101 set(LLVM_SHLIB_OUTPUT_INTDIR ${LLVM_LIBRARY_OUTPUT_INTDIR}) 102 endif() 103 104 option(LLVM_ENABLE_WARNINGS "Enable compiler warnings." ON) 105 option(LLVM_INSTALL_TOOLCHAIN_ONLY 106 "Only include toolchain files in the 'install' target." OFF) 107 108 option(LLVM_FORCE_USE_OLD_HOST_TOOLCHAIN 109 "Set to ON to force using an old, unsupported host toolchain." OFF) 110 option(CLANG_ENABLE_BOOTSTRAP "Generate the clang bootstrap target" OFF) 111 option(LLVM_ENABLE_LIBXML2 "Use libxml2 if available." ON) 112 113 include(AddLLVM) 114 include(TableGen) 115 include(HandleLLVMOptions) 116 include(VersionFromVCS) 117 include(LLVMDistributionSupport) 118 119 set(PACKAGE_VERSION "${LLVM_PACKAGE_VERSION}") 120 121 if (NOT DEFINED LLVM_INCLUDE_TESTS) 122 set(LLVM_INCLUDE_TESTS ON) 123 endif() 124 125 include_directories("${LLVM_BINARY_DIR}/include" "${LLVM_MAIN_INCLUDE_DIR}") 126 link_directories("${LLVM_LIBRARY_DIR}") 127 128 set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin ) 129 set( CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} ) 130 set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} ) 131 132 if(LLVM_INCLUDE_TESTS) 133 include(FindPythonInterp) 134 if(NOT PYTHONINTERP_FOUND) 135 message(FATAL_ERROR 136"Unable to find Python interpreter, required for builds and testing. 137 138Please install Python or specify the PYTHON_EXECUTABLE CMake variable.") 139 endif() 140 141 if( ${PYTHON_VERSION_STRING} VERSION_LESS 2.7 ) 142 message(FATAL_ERROR "Python 2.7 or newer is required") 143 endif() 144 145 # Check prebuilt llvm/utils. 146 if(EXISTS ${LLVM_TOOLS_BINARY_DIR}/FileCheck${CMAKE_EXECUTABLE_SUFFIX} 147 AND EXISTS ${LLVM_TOOLS_BINARY_DIR}/count${CMAKE_EXECUTABLE_SUFFIX} 148 AND EXISTS ${LLVM_TOOLS_BINARY_DIR}/not${CMAKE_EXECUTABLE_SUFFIX}) 149 set(LLVM_UTILS_PROVIDED ON) 150 endif() 151 152 if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py) 153 # Note: path not really used, except for checking if lit was found 154 set(LLVM_LIT ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py) 155 if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/llvm-lit) 156 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/llvm-lit utils/llvm-lit) 157 endif() 158 if(NOT LLVM_UTILS_PROVIDED) 159 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/FileCheck utils/FileCheck) 160 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/count utils/count) 161 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/not utils/not) 162 set(LLVM_UTILS_PROVIDED ON) 163 set(CLANG_TEST_DEPS FileCheck count not) 164 endif() 165 set(UNITTEST_DIR ${LLVM_MAIN_SRC_DIR}/utils/unittest) 166 if(EXISTS ${UNITTEST_DIR}/googletest/include/gtest/gtest.h 167 AND NOT EXISTS ${LLVM_LIBRARY_DIR}/${CMAKE_STATIC_LIBRARY_PREFIX}gtest${CMAKE_STATIC_LIBRARY_SUFFIX} 168 AND EXISTS ${UNITTEST_DIR}/CMakeLists.txt) 169 add_subdirectory(${UNITTEST_DIR} utils/unittest) 170 endif() 171 else() 172 # Seek installed Lit. 173 find_program(LLVM_LIT 174 NAMES llvm-lit lit.py lit 175 PATHS "${LLVM_MAIN_SRC_DIR}/utils/lit" 176 DOC "Path to lit.py") 177 endif() 178 179 if(LLVM_LIT) 180 # Define the default arguments to use with 'lit', and an option for the user 181 # to override. 182 set(LIT_ARGS_DEFAULT "-sv") 183 if (MSVC OR XCODE) 184 set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar") 185 endif() 186 set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit") 187 188 # On Win32 hosts, provide an option to specify the path to the GnuWin32 tools. 189 if( WIN32 AND NOT CYGWIN ) 190 set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools") 191 endif() 192 else() 193 set(LLVM_INCLUDE_TESTS OFF) 194 endif() 195 endif() 196 197 set( CLANG_BUILT_STANDALONE 1 ) 198 set(BACKEND_PACKAGE_STRING "LLVM ${LLVM_PACKAGE_VERSION}") 199else() 200 set(BACKEND_PACKAGE_STRING "${PACKAGE_STRING}") 201endif() 202 203# Make sure that our source directory is on the current cmake module path so that 204# we can include cmake files from this directory. 205list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules") 206 207if(LLVM_ENABLE_LIBXML2) 208 # Don't look for libxml if we're using MSan, since uninstrumented third party 209 # code may call MSan interceptors like strlen, leading to false positives. 210 if(NOT LLVM_USE_SANITIZER MATCHES "Memory.*") 211 set (LIBXML2_FOUND 0) 212 find_package(LibXml2 2.5.3 QUIET) 213 if (LIBXML2_FOUND) 214 set(CLANG_HAVE_LIBXML 1) 215 endif() 216 endif() 217endif() 218 219include(CheckIncludeFile) 220check_include_file(sys/resource.h CLANG_HAVE_RLIMITS) 221 222set(CLANG_RESOURCE_DIR "" CACHE STRING 223 "Relative directory from the Clang binary to its resource files.") 224 225set(C_INCLUDE_DIRS "" CACHE STRING 226 "Colon separated list of directories clang will search for headers.") 227 228set(GCC_INSTALL_PREFIX "" CACHE PATH "Directory where gcc is installed." ) 229set(DEFAULT_SYSROOT "" CACHE PATH 230 "Default <path> to all compiler invocations for --sysroot=<path>." ) 231 232set(ENABLE_LINKER_BUILD_ID OFF CACHE BOOL "pass --build-id to ld") 233 234set(ENABLE_X86_RELAX_RELOCATIONS OFF CACHE BOOL 235 "enable x86 relax relocations by default") 236 237set(ENABLE_EXPERIMENTAL_NEW_PASS_MANAGER FALSE CACHE BOOL 238 "Enable the experimental new pass manager by default.") 239 240set(CLANG_SPAWN_CC1 OFF CACHE BOOL 241 "Whether clang should use a new process for the CC1 invocation") 242 243# TODO: verify the values against LangStandards.def? 244set(CLANG_DEFAULT_STD_C "" CACHE STRING 245 "Default standard to use for C/ObjC code (IDENT from LangStandards.def, empty for platform default)") 246set(CLANG_DEFAULT_STD_CXX "" CACHE STRING 247 "Default standard to use for C++/ObjC++ code (IDENT from LangStandards.def, empty for platform default)") 248 249set(CLANG_DEFAULT_LINKER "" CACHE STRING 250 "Default linker to use (linker name or absolute path, empty for platform default)") 251 252set(CLANG_DEFAULT_CXX_STDLIB "" CACHE STRING 253 "Default C++ stdlib to use (\"libstdc++\" or \"libc++\", empty for platform default") 254if (NOT(CLANG_DEFAULT_CXX_STDLIB STREQUAL "" OR 255 CLANG_DEFAULT_CXX_STDLIB STREQUAL "libstdc++" OR 256 CLANG_DEFAULT_CXX_STDLIB STREQUAL "libc++")) 257 message(WARNING "Resetting default C++ stdlib to use platform default") 258 set(CLANG_DEFAULT_CXX_STDLIB "" CACHE STRING 259 "Default C++ stdlib to use (\"libstdc++\" or \"libc++\", empty for platform default" FORCE) 260endif() 261 262set(CLANG_DEFAULT_RTLIB "" CACHE STRING 263 "Default runtime library to use (\"libgcc\" or \"compiler-rt\", empty for platform default)") 264if (NOT(CLANG_DEFAULT_RTLIB STREQUAL "" OR 265 CLANG_DEFAULT_RTLIB STREQUAL "libgcc" OR 266 CLANG_DEFAULT_RTLIB STREQUAL "compiler-rt")) 267 message(WARNING "Resetting default rtlib to use platform default") 268 set(CLANG_DEFAULT_RTLIB "" CACHE STRING 269 "Default runtime library to use (\"libgcc\" or \"compiler-rt\", empty for platform default)" FORCE) 270endif() 271 272set(CLANG_DEFAULT_UNWINDLIB "" CACHE STRING 273 "Default unwind library to use (\"none\" \"libgcc\" or \"libunwind\", empty to match runtime library.)") 274if (CLANG_DEFAULT_UNWINDLIB STREQUAL "") 275 if (CLANG_DEFAULT_RTLIB STREQUAL "libgcc") 276 set (CLANG_DEFAULT_UNWINDLIB "libgcc" CACHE STRING "" FORCE) 277 elseif (CLANG_DEFAULT_RTLIBS STREQUAL "libunwind") 278 set (CLANG_DEFAULT_UNWINDLIB "none" CACHE STRING "" FORCE) 279 endif() 280endif() 281 282if (NOT(CLANG_DEFAULT_UNWINDLIB STREQUAL "" OR 283 CLANG_DEFAULT_UNWINDLIB STREQUAL "none" OR 284 CLANG_DEFAULT_UNWINDLIB STREQUAL "libgcc" OR 285 CLANG_DEFAULT_UNWINDLIB STREQUAL "libunwind")) 286 message(WARNING "Resetting default unwindlib to use platform default") 287 set(CLANG_DEFAULT_UNWINDLIB "" CACHE STRING 288 "Default unwind library to use (\"none\" \"libgcc\" or \"libunwind\", empty for none)" FORCE) 289endif() 290 291set(CLANG_DEFAULT_OBJCOPY "objcopy" CACHE STRING 292 "Default objcopy executable to use.") 293 294set(CLANG_DEFAULT_OPENMP_RUNTIME "libomp" CACHE STRING 295 "Default OpenMP runtime used by -fopenmp.") 296 297# OpenMP offloading requires at least sm_35 because we use shuffle instructions 298# to generate efficient code for reductions and the atomicMax instruction on 299# 64-bit integers in the implementation of conditional lastprivate. 300set(CLANG_OPENMP_NVPTX_DEFAULT_ARCH "sm_35" CACHE STRING 301 "Default architecture for OpenMP offloading to Nvidia GPUs.") 302string(REGEX MATCH "^sm_([0-9]+)$" MATCHED_ARCH "${CLANG_OPENMP_NVPTX_DEFAULT_ARCH}") 303if (NOT DEFINED MATCHED_ARCH OR "${CMAKE_MATCH_1}" LESS 35) 304 message(WARNING "Resetting default architecture for OpenMP offloading to Nvidia GPUs to sm_35") 305 set(CLANG_OPENMP_NVPTX_DEFAULT_ARCH "sm_35" CACHE STRING 306 "Default architecture for OpenMP offloading to Nvidia GPUs." FORCE) 307endif() 308 309set(CLANG_VENDOR ${PACKAGE_VENDOR} CACHE STRING 310 "Vendor-specific text for showing with version information.") 311 312if( CLANG_VENDOR ) 313 add_definitions( -DCLANG_VENDOR="${CLANG_VENDOR} " ) 314endif() 315 316set(CLANG_REPOSITORY_STRING "" CACHE STRING 317 "Vendor-specific text for showing the repository the source is taken from.") 318 319if(CLANG_REPOSITORY_STRING) 320 add_definitions(-DCLANG_REPOSITORY_STRING="${CLANG_REPOSITORY_STRING}") 321endif() 322 323set(CLANG_VENDOR_UTI "org.llvm.clang" CACHE STRING 324 "Vendor-specific uti.") 325 326set(CLANG_PYTHON_BINDINGS_VERSIONS "" CACHE STRING 327 "Python versions to install libclang python bindings for") 328 329set(CLANG_LINK_CLANG_DYLIB ${LLVM_LINK_LLVM_DYLIB} CACHE BOOL 330 "Link tools against libclang-cpp.so") 331 332if (NOT LLVM_LINK_LLVM_DYLIB AND CLANG_LINK_CLANG_DYLIB) 333 message(FATAL_ERROR "Cannot set CLANG_LINK_CLANG_DYLIB=ON when " 334 "LLVM_LINK_LLVM_DYLIB=OFF") 335endif() 336 337# The libdir suffix must exactly match whatever LLVM's configuration used. 338set(CLANG_LIBDIR_SUFFIX "${LLVM_LIBDIR_SUFFIX}") 339 340set(CLANG_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) 341set(CLANG_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) 342 343if( CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR AND NOT MSVC_IDE ) 344 message(FATAL_ERROR "In-source builds are not allowed. " 345"Please create a directory and run cmake " 346"from there, passing the path to this source directory as the last argument. " 347"This process created the file `CMakeCache.txt' and the directory " 348"`CMakeFiles'. Please delete them.") 349endif() 350 351# If CLANG_VERSION_* is specified, use it, if not use LLVM_VERSION_*. 352if(NOT DEFINED CLANG_VERSION_MAJOR) 353 set(CLANG_VERSION_MAJOR ${LLVM_VERSION_MAJOR}) 354endif() 355if(NOT DEFINED CLANG_VERSION_MINOR) 356 set(CLANG_VERSION_MINOR ${LLVM_VERSION_MINOR}) 357endif() 358if(NOT DEFINED CLANG_VERSION_PATCHLEVEL) 359 set(CLANG_VERSION_PATCHLEVEL ${LLVM_VERSION_PATCH}) 360endif() 361# Unlike PACKAGE_VERSION, CLANG_VERSION does not include LLVM_VERSION_SUFFIX. 362set(CLANG_VERSION "${CLANG_VERSION_MAJOR}.${CLANG_VERSION_MINOR}.${CLANG_VERSION_PATCHLEVEL}") 363message(STATUS "Clang version: ${CLANG_VERSION}") 364 365# Configure the Version.inc file. 366configure_file( 367 ${CMAKE_CURRENT_SOURCE_DIR}/include/clang/Basic/Version.inc.in 368 ${CMAKE_CURRENT_BINARY_DIR}/include/clang/Basic/Version.inc) 369 370# Add appropriate flags for GCC 371if (LLVM_COMPILER_IS_GCC_COMPATIBLE) 372 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-common -Woverloaded-virtual") 373 if (NOT "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang") 374 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-strict-aliasing") 375 endif () 376 377 # Enable -pedantic for Clang even if it's not enabled for LLVM. 378 if (NOT LLVM_ENABLE_PEDANTIC) 379 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic -Wno-long-long") 380 endif () 381 382 check_cxx_compiler_flag("-Werror -Wnested-anon-types" CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG) 383 if( CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG ) 384 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-nested-anon-types" ) 385 endif() 386endif () 387 388# Determine HOST_LINK_VERSION on Darwin. 389set(HOST_LINK_VERSION) 390if (APPLE) 391 set(LD_V_OUTPUT) 392 execute_process( 393 COMMAND sh -c "${CMAKE_LINKER} -v 2>&1 | head -1" 394 RESULT_VARIABLE HAD_ERROR 395 OUTPUT_VARIABLE LD_V_OUTPUT 396 ) 397 if (NOT HAD_ERROR) 398 if ("${LD_V_OUTPUT}" MATCHES ".*ld64-([0-9.]+).*") 399 string(REGEX REPLACE ".*ld64-([0-9.]+).*" "\\1" HOST_LINK_VERSION ${LD_V_OUTPUT}) 400 elseif ("${LD_V_OUTPUT}" MATCHES "[^0-9]*([0-9.]+).*") 401 string(REGEX REPLACE "[^0-9]*([0-9.]+).*" "\\1" HOST_LINK_VERSION ${LD_V_OUTPUT}) 402 endif() 403 else() 404 message(FATAL_ERROR "${CMAKE_LINKER} failed with status ${HAD_ERROR}") 405 endif() 406endif() 407 408include(CMakeParseArguments) 409include(AddClang) 410 411set(CMAKE_INCLUDE_CURRENT_DIR ON) 412 413include_directories(BEFORE 414 ${CMAKE_CURRENT_BINARY_DIR}/include 415 ${CMAKE_CURRENT_SOURCE_DIR}/include 416 ) 417 418if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY) 419 install(DIRECTORY include/clang include/clang-c 420 DESTINATION include 421 COMPONENT clang-headers 422 FILES_MATCHING 423 PATTERN "*.def" 424 PATTERN "*.h" 425 PATTERN "config.h" EXCLUDE 426 PATTERN ".svn" EXCLUDE 427 ) 428 429 install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/include/clang 430 DESTINATION include 431 COMPONENT clang-headers 432 FILES_MATCHING 433 PATTERN "CMakeFiles" EXCLUDE 434 PATTERN "*.inc" 435 PATTERN "*.h" 436 ) 437 438 # Installing the headers needs to depend on generating any public 439 # tablegen'd headers. 440 add_custom_target(clang-headers DEPENDS clang-tablegen-targets) 441 set_target_properties(clang-headers PROPERTIES FOLDER "Misc") 442 if(NOT LLVM_ENABLE_IDE) 443 add_llvm_install_targets(install-clang-headers 444 DEPENDS clang-headers 445 COMPONENT clang-headers) 446 endif() 447 448 add_custom_target(bash-autocomplete DEPENDS utils/bash-autocomplete.sh) 449 install(PROGRAMS utils/bash-autocomplete.sh 450 DESTINATION share/clang 451 COMPONENT bash-autocomplete) 452 if(NOT LLVM_ENABLE_IDE) 453 add_llvm_install_targets(install-bash-autocomplete 454 DEPENDS bash-autocomplete 455 COMPONENT bash-autocomplete) 456 endif() 457endif() 458 459add_definitions( -D_GNU_SOURCE ) 460 461option(CLANG_BUILD_TOOLS 462 "Build the Clang tools. If OFF, just generate build targets." ON) 463 464option(CLANG_ENABLE_ARCMT "Build ARCMT." ON) 465option(CLANG_ENABLE_STATIC_ANALYZER "Build static analyzer." ON) 466 467option(CLANG_ENABLE_PROTO_FUZZER "Build Clang protobuf fuzzer." OFF) 468 469if(NOT CLANG_ENABLE_STATIC_ANALYZER AND CLANG_ENABLE_ARCMT) 470 message(FATAL_ERROR "Cannot disable static analyzer while enabling ARCMT or Z3") 471endif() 472 473if(CLANG_ENABLE_ARCMT) 474 set(CLANG_ENABLE_OBJC_REWRITER ON) 475endif() 476 477# Clang version information 478set(CLANG_EXECUTABLE_VERSION 479 "${CLANG_VERSION_MAJOR}" CACHE STRING 480 "Major version number that will be appended to the clang executable name") 481set(LIBCLANG_LIBRARY_VERSION 482 "${CLANG_VERSION_MAJOR}" CACHE STRING 483 "Major version number that will be appended to the libclang library") 484mark_as_advanced(CLANG_EXECUTABLE_VERSION LIBCLANG_LIBRARY_VERSION) 485 486option(CLANG_INCLUDE_TESTS 487 "Generate build targets for the Clang unit tests." 488 ${LLVM_INCLUDE_TESTS}) 489 490add_subdirectory(utils/TableGen) 491 492add_subdirectory(include) 493 494# All targets below may depend on all tablegen'd files. 495get_property(CLANG_TABLEGEN_TARGETS GLOBAL PROPERTY CLANG_TABLEGEN_TARGETS) 496add_custom_target(clang-tablegen-targets DEPENDS ${CLANG_TABLEGEN_TARGETS}) 497set_target_properties(clang-tablegen-targets PROPERTIES FOLDER "Misc") 498list(APPEND LLVM_COMMON_DEPENDS clang-tablegen-targets) 499 500# Force target to be built as soon as possible. Clang modules builds depend 501# header-wise on it as they ship all headers from the umbrella folders. Building 502# an entire module might include header, which depends on intrinsics_gen. 503if(LLVM_ENABLE_MODULES AND NOT CLANG_BUILT_STANDALONE) 504 list(APPEND LLVM_COMMON_DEPENDS intrinsics_gen) 505endif() 506 507add_subdirectory(lib) 508add_subdirectory(tools) 509add_subdirectory(runtime) 510 511option(CLANG_BUILD_EXAMPLES "Build CLANG example programs by default." OFF) 512add_subdirectory(examples) 513 514if(APPLE) 515 # this line is needed as a cleanup to ensure that any CMakeCaches with the old 516 # default value get updated to the new default. 517 if(CLANG_ORDER_FILE STREQUAL "") 518 unset(CLANG_ORDER_FILE CACHE) 519 unset(CLANG_ORDER_FILE) 520 endif() 521 522 523 set(CLANG_ORDER_FILE ${CMAKE_CURRENT_BINARY_DIR}/clang.order CACHE FILEPATH 524 "Order file to use when compiling clang in order to improve startup time (Darwin Only - requires ld64).") 525 526 if(NOT EXISTS ${CLANG_ORDER_FILE}) 527 string(FIND "${CLANG_ORDER_FILE}" "${CMAKE_CURRENT_BINARY_DIR}" PATH_START) 528 if(PATH_START EQUAL 0) 529 file(WRITE ${CLANG_ORDER_FILE} "\n") 530 else() 531 message(FATAL_ERROR "Specified order file '${CLANG_ORDER_FILE}' does not exist.") 532 endif() 533 endif() 534endif() 535 536 537if( CLANG_INCLUDE_TESTS ) 538 if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/unittest/googletest/include/gtest/gtest.h) 539 add_subdirectory(unittests) 540 list(APPEND CLANG_TEST_DEPS ClangUnitTests) 541 list(APPEND CLANG_TEST_PARAMS 542 clang_unit_site_config=${CMAKE_CURRENT_BINARY_DIR}/test/Unit/lit.site.cfg 543 ) 544 endif() 545 add_subdirectory(test) 546 add_subdirectory(bindings/python/tests) 547 548 if(CLANG_BUILT_STANDALONE) 549 # Add a global check rule now that all subdirectories have been traversed 550 # and we know the total set of lit testsuites. 551 get_property(LLVM_LIT_TESTSUITES GLOBAL PROPERTY LLVM_LIT_TESTSUITES) 552 get_property(LLVM_LIT_PARAMS GLOBAL PROPERTY LLVM_LIT_PARAMS) 553 get_property(LLVM_LIT_DEPENDS GLOBAL PROPERTY LLVM_LIT_DEPENDS) 554 get_property(LLVM_LIT_EXTRA_ARGS GLOBAL PROPERTY LLVM_LIT_EXTRA_ARGS) 555 get_property(LLVM_ADDITIONAL_TEST_TARGETS 556 GLOBAL PROPERTY LLVM_ADDITIONAL_TEST_TARGETS) 557 add_lit_target(check-all 558 "Running all regression tests" 559 ${LLVM_LIT_TESTSUITES} 560 PARAMS ${LLVM_LIT_PARAMS} 561 DEPENDS ${LLVM_LIT_DEPENDS} ${LLVM_ADDITIONAL_TEST_TARGETS} 562 ARGS ${LLVM_LIT_EXTRA_ARGS} 563 ) 564 endif() 565 add_subdirectory(utils/perf-training) 566endif() 567 568option(CLANG_INCLUDE_DOCS "Generate build targets for the Clang docs." 569 ${LLVM_INCLUDE_DOCS}) 570if( CLANG_INCLUDE_DOCS ) 571 add_subdirectory(docs) 572endif() 573 574# Custom target to install all clang libraries. 575add_custom_target(clang-libraries) 576set_target_properties(clang-libraries PROPERTIES FOLDER "Misc") 577 578if(NOT LLVM_ENABLE_IDE) 579 add_llvm_install_targets(install-clang-libraries 580 DEPENDS clang-libraries 581 COMPONENT clang-libraries) 582endif() 583 584get_property(CLANG_LIBS GLOBAL PROPERTY CLANG_LIBS) 585if(CLANG_LIBS) 586 list(REMOVE_DUPLICATES CLANG_LIBS) 587 foreach(lib ${CLANG_LIBS}) 588 add_dependencies(clang-libraries ${lib}) 589 if(NOT LLVM_ENABLE_IDE) 590 add_dependencies(install-clang-libraries install-${lib}) 591 endif() 592 endforeach() 593endif() 594 595add_subdirectory(cmake/modules) 596 597if(CLANG_STAGE) 598 message(STATUS "Setting current clang stage to: ${CLANG_STAGE}") 599endif() 600 601if (CLANG_ENABLE_BOOTSTRAP) 602 include(ExternalProject) 603 604 add_custom_target(clang-bootstrap-deps DEPENDS clang) 605 606 if(NOT CLANG_STAGE) 607 set(CLANG_STAGE stage1) 608 endif() 609 610 string(REGEX MATCH "stage([0-9]*)" MATCHED_STAGE "${CLANG_STAGE}") 611 if(MATCHED_STAGE) 612 if(NOT LLVM_BUILD_INSTRUMENTED) 613 math(EXPR STAGE_NUM "${CMAKE_MATCH_1} + 1") 614 set(NEXT_CLANG_STAGE stage${STAGE_NUM}) 615 else() 616 set(NEXT_CLANG_STAGE stage${CMAKE_MATCH_1}) 617 endif() 618 else() 619 set(NEXT_CLANG_STAGE bootstrap) 620 endif() 621 622 if(BOOTSTRAP_LLVM_BUILD_INSTRUMENTED) 623 set(NEXT_CLANG_STAGE ${NEXT_CLANG_STAGE}-instrumented) 624 endif() 625 message(STATUS "Setting next clang stage to: ${NEXT_CLANG_STAGE}") 626 627 628 set(STAMP_DIR ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-stamps/) 629 set(BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-bins/) 630 631 if(BOOTSTRAP_LLVM_ENABLE_LLD) 632 add_dependencies(clang-bootstrap-deps lld) 633 endif() 634 635 # If the next stage is LTO we need to depend on LTO and possibly lld or LLVMgold 636 if(BOOTSTRAP_LLVM_ENABLE_LTO OR LLVM_ENABLE_LTO AND NOT LLVM_BUILD_INSTRUMENTED) 637 if(APPLE) 638 add_dependencies(clang-bootstrap-deps LTO) 639 # on Darwin we need to set DARWIN_LTO_LIBRARY so that -flto will work 640 # using the just-built compiler, and we need to override DYLD_LIBRARY_PATH 641 # so that the host object file tools will use the just-built libLTO. 642 # However if System Integrity Protection is enabled the DYLD variables 643 # will be scrubbed from the environment of any base system commands. This 644 # includes /bin/sh, which ninja uses when executing build commands. To 645 # work around the envar being filtered away we pass it in as a CMake 646 # variable, and have LLVM's CMake append the envar to the archiver calls. 647 set(LTO_LIBRARY -DDARWIN_LTO_LIBRARY=${LLVM_SHLIB_OUTPUT_INTDIR}/libLTO.dylib 648 -DDYLD_LIBRARY_PATH=${LLVM_LIBRARY_OUTPUT_INTDIR}) 649 elseif(NOT WIN32) 650 add_dependencies(clang-bootstrap-deps llvm-ar llvm-ranlib) 651 if(NOT BOOTSTRAP_LLVM_ENABLE_LLD AND LLVM_BINUTILS_INCDIR) 652 add_dependencies(clang-bootstrap-deps LLVMgold) 653 endif() 654 set(${CLANG_STAGE}_AR -DCMAKE_AR=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ar) 655 set(${CLANG_STAGE}_RANLIB -DCMAKE_RANLIB=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ranlib) 656 endif() 657 endif() 658 659 if(CLANG_BOOTSTRAP_EXTRA_DEPS) 660 add_dependencies(clang-bootstrap-deps ${CLANG_BOOTSTRAP_EXTRA_DEPS}) 661 endif() 662 663 add_custom_target(${NEXT_CLANG_STAGE}-clear 664 DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-cleared 665 ) 666 add_custom_command( 667 OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-cleared 668 DEPENDS clang-bootstrap-deps 669 COMMAND ${CMAKE_COMMAND} -E remove_directory ${BINARY_DIR} 670 COMMAND ${CMAKE_COMMAND} -E make_directory ${BINARY_DIR} 671 COMMAND ${CMAKE_COMMAND} -E remove_directory ${STAMP_DIR} 672 COMMAND ${CMAKE_COMMAND} -E make_directory ${STAMP_DIR} 673 COMMENT "Clobberring ${NEXT_CLANG_STAGE} build and stamp directories" 674 ) 675 676 if(CMAKE_VERBOSE_MAKEFILE) 677 set(verbose -DCMAKE_VERBOSE_MAKEFILE=On) 678 endif() 679 680 set(_BOOTSTRAP_DEFAULT_PASSTHROUGH 681 PACKAGE_VERSION 682 PACKAGE_VENDOR 683 LLVM_VERSION_MAJOR 684 LLVM_VERSION_MINOR 685 LLVM_VERSION_PATCH 686 CLANG_VERSION_MAJOR 687 CLANG_VERSION_MINOR 688 CLANG_VERSION_PATCHLEVEL 689 LLVM_VERSION_SUFFIX 690 LLVM_BINUTILS_INCDIR 691 CLANG_REPOSITORY_STRING 692 CMAKE_C_COMPILER_LAUNCHER 693 CMAKE_CXX_COMPILER_LAUNCHER 694 CMAKE_MAKE_PROGRAM 695 CMAKE_OSX_ARCHITECTURES 696 LLVM_ENABLE_PROJECTS 697 LLVM_ENABLE_RUNTIMES) 698 699 # We don't need to depend on compiler-rt/libcxx if we're building instrumented 700 # because the next stage will use the same compiler used to build this stage. 701 if(NOT LLVM_BUILD_INSTRUMENTED) 702 if(TARGET compiler-rt) 703 add_dependencies(clang-bootstrap-deps compiler-rt) 704 endif() 705 if(TARGET cxx-headers) 706 add_dependencies(clang-bootstrap-deps cxx-headers) 707 endif() 708 endif() 709 710 set(C_COMPILER "clang") 711 set(CXX_COMPILER "clang++") 712 if(WIN32) 713 set(C_COMPILER "clang-cl.exe") 714 set(CXX_COMPILER "clang-cl.exe") 715 endif() 716 717 set(COMPILER_OPTIONS 718 -DCMAKE_CXX_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/${CXX_COMPILER} 719 -DCMAKE_C_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/${C_COMPILER} 720 -DCMAKE_ASM_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/${C_COMPILER} 721 -DCMAKE_ASM_COMPILER_ID=Clang) 722 723 if(BOOTSTRAP_CMAKE_SYSTEM_NAME) 724 set(${CLANG_STAGE}_CONFIG -DLLVM_CONFIG_PATH=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-config) 725 set(${CLANG_STAGE}_TABLEGEN 726 -DLLVM_TABLEGEN=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-tblgen 727 -DCLANG_TABLEGEN=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang-tblgen) 728 if(BOOTSTRAP_CMAKE_SYSTEM_NAME STREQUAL "Linux") 729 if(BOOTSTRAP_LLVM_ENABLE_LLD) 730 set(${CLANG_STAGE}_LINKER -DCMAKE_LINKER=${LLVM_RUNTIME_OUTPUT_INTDIR}/ld.lld) 731 endif() 732 if(NOT BOOTSTRAP_LLVM_ENABLE_LTO) 733 add_dependencies(clang-bootstrap-deps llvm-ar llvm-ranlib) 734 set(${CLANG_STAGE}_AR -DCMAKE_AR=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ar) 735 set(${CLANG_STAGE}_RANLIB -DCMAKE_RANLIB=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ranlib) 736 endif() 737 add_dependencies(clang-bootstrap-deps llvm-objcopy llvm-strip) 738 set(${CLANG_STAGE}_OBJCOPY -DCMAKE_OBJCOPY=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-objcopy) 739 set(${CLANG_STAGE}_STRIP -DCMAKE_STRIP=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-strip) 740 endif() 741 endif() 742 743 if(BOOTSTRAP_LLVM_BUILD_INSTRUMENTED) 744 add_dependencies(clang-bootstrap-deps llvm-profdata) 745 set(PGO_OPT -DLLVM_PROFDATA=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-profdata) 746 endif() 747 748 if(LLVM_BUILD_INSTRUMENTED) 749 add_dependencies(clang-bootstrap-deps generate-profdata) 750 set(PGO_OPT -DLLVM_PROFDATA_FILE=${CMAKE_CURRENT_BINARY_DIR}/utils/perf-training/clang.profdata) 751 # Use the current tools for LTO instead of the instrumented ones 752 list(APPEND _BOOTSTRAP_DEFAULT_PASSTHROUGH 753 CMAKE_CXX_COMPILER 754 CMAKE_C_COMPILER 755 CMAKE_ASM_COMPILER 756 CMAKE_AR 757 CMAKE_RANLIB 758 DARWIN_LTO_LIBRARY 759 DYLD_LIBRARY_PATH) 760 761 set(COMPILER_OPTIONS) 762 set(LTO_LIBRARY) 763 set(LTO_AR) 764 set(LTO_RANLIB) 765 endif() 766 767 # Find all variables that start with BOOTSTRAP_ and populate a variable with 768 # them. 769 get_cmake_property(variableNames VARIABLES) 770 foreach(variableName ${variableNames}) 771 if(variableName MATCHES "^BOOTSTRAP_") 772 string(SUBSTRING ${variableName} 10 -1 varName) 773 string(REPLACE ";" "|" value "${${variableName}}") 774 list(APPEND PASSTHROUGH_VARIABLES 775 -D${varName}=${value}) 776 endif() 777 if(${variableName} AND variableName MATCHES "LLVM_EXTERNAL_.*_SOURCE_DIR") 778 list(APPEND PASSTHROUGH_VARIABLES 779 -D${variableName}=${${variableName}}) 780 endif() 781 endforeach() 782 783 # Populate the passthrough variables 784 foreach(variableName ${CLANG_BOOTSTRAP_PASSTHROUGH} ${_BOOTSTRAP_DEFAULT_PASSTHROUGH}) 785 if(DEFINED ${variableName}) 786 if("${${variableName}}" STREQUAL "") 787 set(value "") 788 else() 789 string(REPLACE ";" "|" value "${${variableName}}") 790 endif() 791 list(APPEND PASSTHROUGH_VARIABLES 792 -D${variableName}=${value}) 793 endif() 794 endforeach() 795 796 ExternalProject_Add(${NEXT_CLANG_STAGE} 797 DEPENDS clang-bootstrap-deps 798 PREFIX ${NEXT_CLANG_STAGE} 799 SOURCE_DIR ${CMAKE_SOURCE_DIR} 800 STAMP_DIR ${STAMP_DIR} 801 BINARY_DIR ${BINARY_DIR} 802 EXCLUDE_FROM_ALL 1 803 CMAKE_ARGS 804 # We shouldn't need to set this here, but INSTALL_DIR doesn't 805 # seem to work, so instead I'm passing this through 806 -DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX} 807 ${PASSTHROUGH_VARIABLES} 808 ${CLANG_BOOTSTRAP_CMAKE_ARGS} 809 -DCLANG_STAGE=${NEXT_CLANG_STAGE} 810 ${COMPILER_OPTIONS} 811 ${${CLANG_STAGE}_CONFIG} 812 ${${CLANG_STAGE}_TABLEGEN} 813 ${LTO_LIBRARY} ${verbose} ${PGO_OPT} 814 ${${CLANG_STAGE}_LINKER} 815 ${${CLANG_STAGE}_AR} 816 ${${CLANG_STAGE}_RANLIB} 817 ${${CLANG_STAGE}_OBJCOPY} 818 ${${CLANG_STAGE}_STRIP} 819 INSTALL_COMMAND "" 820 STEP_TARGETS configure build 821 USES_TERMINAL_CONFIGURE 1 822 USES_TERMINAL_BUILD 1 823 USES_TERMINAL_INSTALL 1 824 LIST_SEPARATOR | 825 ) 826 827 # exclude really-install from main target 828 set_target_properties(${NEXT_CLANG_STAGE} PROPERTIES _EP_really-install_EXCLUDE_FROM_MAIN On) 829 ExternalProject_Add_Step(${NEXT_CLANG_STAGE} really-install 830 COMMAND ${CMAKE_COMMAND} --build <BINARY_DIR> --target install 831 COMMENT "Performing install step for '${NEXT_CLANG_STAGE}'" 832 DEPENDEES build 833 USES_TERMINAL 1 834 ) 835 ExternalProject_Add_StepTargets(${NEXT_CLANG_STAGE} really-install) 836 add_custom_target(${NEXT_CLANG_STAGE}-install DEPENDS ${NEXT_CLANG_STAGE}-really-install) 837 838 if(NOT CLANG_BOOTSTRAP_TARGETS) 839 set(CLANG_BOOTSTRAP_TARGETS check-llvm check-clang check-all) 840 endif() 841 foreach(target ${CLANG_BOOTSTRAP_TARGETS}) 842 # exclude from main target 843 set_target_properties(${NEXT_CLANG_STAGE} PROPERTIES _EP_${target}_EXCLUDE_FROM_MAIN On) 844 845 ExternalProject_Add_Step(${NEXT_CLANG_STAGE} ${target} 846 COMMAND ${CMAKE_COMMAND} --build <BINARY_DIR> --target ${target} 847 COMMENT "Performing ${target} for '${NEXT_CLANG_STAGE}'" 848 DEPENDEES configure 849 USES_TERMINAL 1 850 ) 851 852 if(target MATCHES "^stage[0-9]*") 853 add_custom_target(${target} DEPENDS ${NEXT_CLANG_STAGE}-${target}) 854 endif() 855 856 ExternalProject_Add_StepTargets(${NEXT_CLANG_STAGE} ${target}) 857 endforeach() 858endif() 859 860if (LLVM_ADD_NATIVE_VISUALIZERS_TO_SOLUTION) 861 add_subdirectory(utils/ClangVisualizers) 862endif() 863add_subdirectory(utils/hmaptool) 864 865if(CLANG_BUILT_STANDALONE) 866 llvm_distribution_add_targets() 867 process_llvm_pass_plugins() 868endif() 869 870configure_file( 871 ${CLANG_SOURCE_DIR}/include/clang/Config/config.h.cmake 872 ${CLANG_BINARY_DIR}/include/clang/Config/config.h) 873