1 cmake_minimum_required(VERSION 3.4.3)
3 # If we are not building as a part of LLVM, build Clang as an
4 # standalone project, using LLVM as an external library:
5 if( CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR )
10 find_program(LLVM_CONFIG "llvm-config")
12 message(STATUS "Found LLVM_CONFIG as ${LLVM_CONFIG}")
13 set(CONFIG_COMMAND ${LLVM_CONFIG}
22 COMMAND ${CONFIG_COMMAND}
23 RESULT_VARIABLE HAD_ERROR
24 OUTPUT_VARIABLE CONFIG_OUTPUT
28 "[ \t]*[\r\n]+[ \t]*" ";"
29 CONFIG_OUTPUT ${CONFIG_OUTPUT})
31 string(REPLACE ";" " " CONFIG_COMMAND_STR "${CONFIG_COMMAND}")
32 message(STATUS "${CONFIG_COMMAND_STR}")
33 message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}")
36 message(FATAL_ERROR "llvm-config not found -- ${LLVM_CONFIG}")
39 list(GET CONFIG_OUTPUT 0 ENABLE_ASSERTIONS)
40 list(GET CONFIG_OUTPUT 1 TOOLS_BINARY_DIR)
41 list(GET CONFIG_OUTPUT 2 LIBRARY_DIR)
42 list(GET CONFIG_OUTPUT 3 INCLUDE_DIR)
43 list(GET CONFIG_OUTPUT 4 LLVM_OBJ_ROOT)
44 list(GET CONFIG_OUTPUT 5 MAIN_SRC_DIR)
45 list(GET CONFIG_OUTPUT 6 LLVM_CONFIG_CMAKE_PATH)
48 set(LLVM_ENABLE_ASSERTIONS ${ENABLE_ASSERTIONS}
49 CACHE BOOL "Enable assertions")
50 # Assertions should follow llvm-config's.
51 mark_as_advanced(LLVM_ENABLE_ASSERTIONS)
54 set(LLVM_TOOLS_BINARY_DIR ${TOOLS_BINARY_DIR} CACHE PATH "Path to llvm/bin")
55 set(LLVM_LIBRARY_DIR ${LIBRARY_DIR} CACHE PATH "Path to llvm/lib")
56 set(LLVM_MAIN_INCLUDE_DIR ${INCLUDE_DIR} CACHE PATH "Path to llvm/include")
57 set(LLVM_BINARY_DIR ${LLVM_OBJ_ROOT} CACHE PATH "Path to LLVM build tree")
58 set(LLVM_MAIN_SRC_DIR ${MAIN_SRC_DIR} CACHE PATH "Path to LLVM source tree")
60 # Normalize LLVM_CMAKE_PATH. --cmakedir might contain backslashes.
61 # CMake assumes slashes as PATH.
62 file(TO_CMAKE_PATH ${LLVM_CONFIG_CMAKE_PATH} LLVM_CMAKE_PATH)
64 find_program(LLVM_TABLEGEN_EXE "llvm-tblgen" ${LLVM_TOOLS_BINARY_DIR}
67 set(LLVMCONFIG_FILE "${LLVM_CMAKE_PATH}/LLVMConfig.cmake")
68 if(EXISTS ${LLVMCONFIG_FILE})
69 list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}")
70 include(${LLVMCONFIG_FILE})
72 message(FATAL_ERROR "Not found: ${LLVMCONFIG_FILE}")
75 # They are used as destination of target generators.
76 set(LLVM_RUNTIME_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/bin)
77 set(LLVM_LIBRARY_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX})
79 # DLL platform -- put DLLs into bin.
80 set(LLVM_SHLIB_OUTPUT_INTDIR ${LLVM_RUNTIME_OUTPUT_INTDIR})
82 set(LLVM_SHLIB_OUTPUT_INTDIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
85 option(LLVM_ENABLE_WARNINGS "Enable compiler warnings." ON)
86 option(LLVM_INSTALL_TOOLCHAIN_ONLY
87 "Only include toolchain files in the 'install' target." OFF)
89 option(LLVM_FORCE_USE_OLD_HOST_TOOLCHAIN
90 "Set to ON to force using an old, unsupported host toolchain." OFF)
91 option(CLANG_ENABLE_BOOTSTRAP "Generate the clang bootstrap target" OFF)
95 include(HandleLLVMOptions)
96 include(VersionFromVCS)
98 set(PACKAGE_VERSION "${LLVM_PACKAGE_VERSION}")
100 if (NOT DEFINED LLVM_INCLUDE_TESTS)
101 set(LLVM_INCLUDE_TESTS ON)
104 include_directories("${LLVM_BINARY_DIR}/include" "${LLVM_MAIN_INCLUDE_DIR}")
105 link_directories("${LLVM_LIBRARY_DIR}")
107 set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin )
108 set( CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} )
109 set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} )
111 if(LLVM_INCLUDE_TESTS)
112 set(Python_ADDITIONAL_VERSIONS 2.7)
113 include(FindPythonInterp)
114 if(NOT PYTHONINTERP_FOUND)
116 "Unable to find Python interpreter, required for builds and testing.
118 Please install Python or specify the PYTHON_EXECUTABLE CMake variable.")
121 if( ${PYTHON_VERSION_STRING} VERSION_LESS 2.7 )
122 message(FATAL_ERROR "Python 2.7 or newer is required")
125 # Check prebuilt llvm/utils.
126 if(EXISTS ${LLVM_TOOLS_BINARY_DIR}/FileCheck${CMAKE_EXECUTABLE_SUFFIX}
127 AND EXISTS ${LLVM_TOOLS_BINARY_DIR}/count${CMAKE_EXECUTABLE_SUFFIX}
128 AND EXISTS ${LLVM_TOOLS_BINARY_DIR}/not${CMAKE_EXECUTABLE_SUFFIX})
129 set(LLVM_UTILS_PROVIDED ON)
132 if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py)
133 # Note: path not really used, except for checking if lit was found
134 set(LLVM_LIT ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py)
135 if(NOT LLVM_UTILS_PROVIDED)
136 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/FileCheck utils/FileCheck)
137 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/count utils/count)
138 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/not utils/not)
139 set(LLVM_UTILS_PROVIDED ON)
140 set(CLANG_TEST_DEPS FileCheck count not)
142 set(UNITTEST_DIR ${LLVM_MAIN_SRC_DIR}/utils/unittest)
143 if(EXISTS ${UNITTEST_DIR}/googletest/include/gtest/gtest.h
144 AND NOT EXISTS ${LLVM_LIBRARY_DIR}/${CMAKE_STATIC_LIBRARY_PREFIX}gtest${CMAKE_STATIC_LIBRARY_SUFFIX}
145 AND EXISTS ${UNITTEST_DIR}/CMakeLists.txt)
146 add_subdirectory(${UNITTEST_DIR} utils/unittest)
149 # Seek installed Lit.
150 find_program(LLVM_LIT
151 NAMES llvm-lit lit.py lit
152 PATHS "${LLVM_MAIN_SRC_DIR}/utils/lit"
153 DOC "Path to lit.py")
157 # Define the default arguments to use with 'lit', and an option for the user
159 set(LIT_ARGS_DEFAULT "-sv")
161 set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar")
163 set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit")
165 # On Win32 hosts, provide an option to specify the path to the GnuWin32 tools.
166 if( WIN32 AND NOT CYGWIN )
167 set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools")
170 set(LLVM_INCLUDE_TESTS OFF)
174 set( CLANG_BUILT_STANDALONE 1 )
175 set(BACKEND_PACKAGE_STRING "LLVM ${LLVM_PACKAGE_VERSION}")
177 set(BACKEND_PACKAGE_STRING "${PACKAGE_STRING}")
180 # Make sure that our source directory is on the current cmake module path so that
181 # we can include cmake files from this directory.
182 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules")
184 # Don't look for libxml if we're using MSan, since uninstrumented third party
185 # code may call MSan interceptors like strlen, leading to false positives.
186 if(NOT LLVM_USE_SANITIZER MATCHES "Memory.*")
187 set (LIBXML2_FOUND 0)
188 find_package(LibXml2 2.5.3 QUIET)
190 set(CLANG_HAVE_LIBXML 1)
194 include(CheckIncludeFile)
195 check_include_file(sys/resource.h CLANG_HAVE_RLIMITS)
197 set(CLANG_RESOURCE_DIR "" CACHE STRING
198 "Relative directory from the Clang binary to its resource files.")
200 set(C_INCLUDE_DIRS "" CACHE STRING
201 "Colon separated list of directories clang will search for headers.")
203 set(GCC_INSTALL_PREFIX "" CACHE PATH "Directory where gcc is installed." )
204 set(DEFAULT_SYSROOT "" CACHE PATH
205 "Default <path> to all compiler invocations for --sysroot=<path>." )
207 set(ENABLE_LINKER_BUILD_ID OFF CACHE BOOL "pass --build-id to ld")
209 set(ENABLE_X86_RELAX_RELOCATIONS OFF CACHE BOOL
210 "enable x86 relax relocations by default")
212 set(CLANG_DEFAULT_LINKER "" CACHE STRING
213 "Default linker to use (linker name or absolute path, empty for platform default)")
215 set(CLANG_DEFAULT_CXX_STDLIB "" CACHE STRING
216 "Default C++ stdlib to use (\"libstdc++\" or \"libc++\", empty for platform default")
217 if (NOT(CLANG_DEFAULT_CXX_STDLIB STREQUAL "" OR
218 CLANG_DEFAULT_CXX_STDLIB STREQUAL "libstdc++" OR
219 CLANG_DEFAULT_CXX_STDLIB STREQUAL "libc++"))
220 message(WARNING "Resetting default C++ stdlib to use platform default")
221 set(CLANG_DEFAULT_CXX_STDLIB "" CACHE STRING
222 "Default C++ stdlib to use (\"libstdc++\" or \"libc++\", empty for platform default" FORCE)
225 set(CLANG_DEFAULT_RTLIB "" CACHE STRING
226 "Default runtime library to use (\"libgcc\" or \"compiler-rt\", empty for platform default)")
227 if (NOT(CLANG_DEFAULT_RTLIB STREQUAL "" OR
228 CLANG_DEFAULT_RTLIB STREQUAL "libgcc" OR
229 CLANG_DEFAULT_RTLIB STREQUAL "compiler-rt"))
230 message(WARNING "Resetting default rtlib to use platform default")
231 set(CLANG_DEFAULT_RTLIB "" CACHE STRING
232 "Default runtime library to use (\"libgcc\" or \"compiler-rt\", empty for platform default)" FORCE)
235 set(CLANG_DEFAULT_OPENMP_RUNTIME "libomp" CACHE STRING
236 "Default OpenMP runtime used by -fopenmp.")
238 # OpenMP offloading requires at least sm_30 because we use shuffle instructions
239 # to generate efficient code for reductions.
240 set(CLANG_OPENMP_NVPTX_DEFAULT_ARCH "sm_30" CACHE STRING
241 "Default architecture for OpenMP offloading to Nvidia GPUs.")
242 string(REGEX MATCH "^sm_([0-9]+)$" MATCHED_ARCH "${CLANG_OPENMP_NVPTX_DEFAULT_ARCH}")
243 if (NOT DEFINED MATCHED_ARCH OR "${CMAKE_MATCH_1}" LESS 30)
244 message(WARNING "Resetting default architecture for OpenMP offloading to Nvidia GPUs to sm_30")
245 set(CLANG_OPENMP_NVPTX_DEFAULT_ARCH "sm_30" CACHE STRING
246 "Default architecture for OpenMP offloading to Nvidia GPUs." FORCE)
249 set(CLANG_VENDOR ${PACKAGE_VENDOR} CACHE STRING
250 "Vendor-specific text for showing with version information.")
253 add_definitions( -DCLANG_VENDOR="${CLANG_VENDOR} " )
256 set(CLANG_REPOSITORY_STRING "" CACHE STRING
257 "Vendor-specific text for showing the repository the source is taken from.")
259 if(CLANG_REPOSITORY_STRING)
260 add_definitions(-DCLANG_REPOSITORY_STRING="${CLANG_REPOSITORY_STRING}")
263 set(CLANG_VENDOR_UTI "org.llvm.clang" CACHE STRING
264 "Vendor-specific uti.")
266 # The libdir suffix must exactly match whatever LLVM's configuration used.
267 set(CLANG_LIBDIR_SUFFIX "${LLVM_LIBDIR_SUFFIX}")
269 set(CLANG_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
270 set(CLANG_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
272 if( CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR AND NOT MSVC_IDE )
273 message(FATAL_ERROR "In-source builds are not allowed. CMake would overwrite "
274 "the makefiles distributed with LLVM. Please create a directory and run cmake "
275 "from there, passing the path to this source directory as the last argument. "
276 "This process created the file `CMakeCache.txt' and the directory "
277 "`CMakeFiles'. Please delete them.")
280 if( NOT CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR )
282 tablegenned_files_on_include_dir
283 "${CLANG_SOURCE_DIR}/include/clang/*.inc")
284 if( tablegenned_files_on_include_dir )
285 message(FATAL_ERROR "Apparently there is a previous in-source build, "
286 "probably as the result of running `configure' and `make' on "
287 "${CLANG_SOURCE_DIR}. This may cause problems. The suspicious files are:\n"
288 "${tablegenned_files_on_include_dir}\nPlease clean the source directory.")
292 # If CLANG_VERSION_* is specified, use it, if not use LLVM_VERSION_*.
293 if(NOT DEFINED CLANG_VERSION_MAJOR)
294 set(CLANG_VERSION_MAJOR ${LLVM_VERSION_MAJOR})
296 if(NOT DEFINED CLANG_VERSION_MINOR)
297 set(CLANG_VERSION_MINOR ${LLVM_VERSION_MINOR})
299 if(NOT DEFINED CLANG_VERSION_PATCHLEVEL)
300 set(CLANG_VERSION_PATCHLEVEL ${LLVM_VERSION_PATCH})
302 # Unlike PACKAGE_VERSION, CLANG_VERSION does not include LLVM_VERSION_SUFFIX.
303 set(CLANG_VERSION "${CLANG_VERSION_MAJOR}.${CLANG_VERSION_MINOR}.${CLANG_VERSION_PATCHLEVEL}")
304 message(STATUS "Clang version: ${CLANG_VERSION}")
306 # Configure the Version.inc file.
308 ${CMAKE_CURRENT_SOURCE_DIR}/include/clang/Basic/Version.inc.in
309 ${CMAKE_CURRENT_BINARY_DIR}/include/clang/Basic/Version.inc)
311 # Add appropriate flags for GCC
312 if (LLVM_COMPILER_IS_GCC_COMPATIBLE)
313 set(CMAKE_CXX_FLAGS "${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")
318 # Enable -pedantic for Clang even if it's not enabled for LLVM.
319 if (NOT LLVM_ENABLE_PEDANTIC)
320 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic -Wno-long-long")
323 check_cxx_compiler_flag("-Werror -Wnested-anon-types" CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG)
324 if( CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG )
325 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-nested-anon-types" )
329 # Determine HOST_LINK_VERSION on Darwin.
330 set(HOST_LINK_VERSION)
334 COMMAND sh -c "${CMAKE_LINKER} -v 2>&1 | head -1"
335 RESULT_VARIABLE HAD_ERROR
336 OUTPUT_VARIABLE LD_V_OUTPUT
339 if ("${LD_V_OUTPUT}" MATCHES ".*ld64-([0-9.]+).*")
340 string(REGEX REPLACE ".*ld64-([0-9.]+).*" "\\1" HOST_LINK_VERSION ${LD_V_OUTPUT})
341 elseif ("${LD_V_OUTPUT}" MATCHES "[^0-9]*([0-9.]+).*")
342 string(REGEX REPLACE "[^0-9]*([0-9.]+).*" "\\1" HOST_LINK_VERSION ${LD_V_OUTPUT})
345 message(FATAL_ERROR "${CMAKE_LINKER} failed with status ${HAD_ERROR}")
349 include(CMakeParseArguments)
352 set(CMAKE_INCLUDE_CURRENT_DIR ON)
354 include_directories(BEFORE
355 ${CMAKE_CURRENT_BINARY_DIR}/include
356 ${CMAKE_CURRENT_SOURCE_DIR}/include
359 if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
360 install(DIRECTORY include/clang include/clang-c
365 PATTERN "config.h" EXCLUDE
366 PATTERN ".svn" EXCLUDE
369 install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/include/clang
372 PATTERN "CMakeFiles" EXCLUDE
377 install(PROGRAMS utils/bash-autocomplete.sh
378 DESTINATION share/clang
382 add_definitions( -D_GNU_SOURCE )
384 option(CLANG_BUILD_TOOLS
385 "Build the Clang tools. If OFF, just generate build targets." ON)
387 option(CLANG_ENABLE_ARCMT "Build ARCMT." ON)
388 option(CLANG_ENABLE_STATIC_ANALYZER "Build static analyzer." ON)
390 option(CLANG_ANALYZER_BUILD_Z3
391 "Build the static analyzer with the Z3 constraint manager." OFF)
393 option(CLANG_ENABLE_PROTO_FUZZER "Build Clang protobuf fuzzer." OFF)
395 if(NOT CLANG_ENABLE_STATIC_ANALYZER AND (CLANG_ENABLE_ARCMT OR CLANG_ANALYZER_BUILD_Z3))
396 message(FATAL_ERROR "Cannot disable static analyzer while enabling ARCMT or Z3")
399 if(CLANG_ANALYZER_BUILD_Z3)
402 set(CLANG_ANALYZER_WITH_Z3 1)
404 message(FATAL_ERROR "Cannot find Z3 header file or shared library")
408 if(CLANG_ENABLE_ARCMT)
409 set(CLANG_ENABLE_OBJC_REWRITER ON)
412 # Clang version information
413 set(CLANG_EXECUTABLE_VERSION
414 "${CLANG_VERSION_MAJOR}.${CLANG_VERSION_MINOR}" CACHE STRING
415 "Version number that will be placed into the clang executable, in the form XX.YY")
416 set(LIBCLANG_LIBRARY_VERSION
417 "${CLANG_VERSION_MAJOR}.${CLANG_VERSION_MINOR}" CACHE STRING
418 "Version number that will be placed into the libclang library , in the form XX.YY")
419 mark_as_advanced(CLANG_EXECUTABLE_VERSION LIBCLANG_LIBRARY_VERSION)
421 option(CLANG_INCLUDE_TESTS
422 "Generate build targets for the Clang unit tests."
423 ${LLVM_INCLUDE_TESTS})
425 add_subdirectory(utils/TableGen)
427 add_subdirectory(include)
429 # All targets below may depend on all tablegen'd files.
430 get_property(CLANG_TABLEGEN_TARGETS GLOBAL PROPERTY CLANG_TABLEGEN_TARGETS)
431 add_custom_target(clang-tablegen-targets DEPENDS ${CLANG_TABLEGEN_TARGETS})
432 list(APPEND LLVM_COMMON_DEPENDS clang-tablegen-targets)
434 # Force target to be built as soon as possible. Clang modules builds depend
435 # header-wise on it as they ship all headers from the umbrella folders. Building
436 # an entire module might include header, which depends on intrinsics_gen.
437 if(LLVM_ENABLE_MODULES AND NOT CLANG_BUILT_STANDALONE)
438 list(APPEND LLVM_COMMON_DEPENDS intrinsics_gen)
441 add_subdirectory(lib)
442 add_subdirectory(tools)
443 add_subdirectory(runtime)
445 option(CLANG_BUILD_EXAMPLES "Build CLANG example programs by default." OFF)
446 add_subdirectory(examples)
449 # this line is needed as a cleanup to ensure that any CMakeCaches with the old
450 # default value get updated to the new default.
451 if(CLANG_ORDER_FILE STREQUAL "")
452 unset(CLANG_ORDER_FILE CACHE)
453 unset(CLANG_ORDER_FILE)
457 set(CLANG_ORDER_FILE ${CMAKE_CURRENT_BINARY_DIR}/clang.order CACHE FILEPATH
458 "Order file to use when compiling clang in order to improve startup time (Darwin Only - requires ld64).")
460 if(NOT EXISTS ${CLANG_ORDER_FILE})
461 string(FIND "${CLANG_ORDER_FILE}" "${CMAKE_CURRENT_BINARY_DIR}" PATH_START)
462 if(PATH_START EQUAL 0)
463 file(WRITE ${CLANG_ORDER_FILE} "\n")
465 message(FATAL_ERROR "Specified order file '${CLANG_ORDER_FILE}' does not exist.")
471 if( CLANG_INCLUDE_TESTS )
472 if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/unittest/googletest/include/gtest/gtest.h)
473 add_subdirectory(unittests)
474 list(APPEND CLANG_TEST_DEPS ClangUnitTests)
475 list(APPEND CLANG_TEST_PARAMS
476 clang_unit_site_config=${CMAKE_CURRENT_BINARY_DIR}/test/Unit/lit.site.cfg
479 add_subdirectory(test)
481 if(CLANG_BUILT_STANDALONE)
482 # Add a global check rule now that all subdirectories have been traversed
483 # and we know the total set of lit testsuites.
484 get_property(LLVM_LIT_TESTSUITES GLOBAL PROPERTY LLVM_LIT_TESTSUITES)
485 get_property(LLVM_LIT_PARAMS GLOBAL PROPERTY LLVM_LIT_PARAMS)
486 get_property(LLVM_LIT_DEPENDS GLOBAL PROPERTY LLVM_LIT_DEPENDS)
487 get_property(LLVM_LIT_EXTRA_ARGS GLOBAL PROPERTY LLVM_LIT_EXTRA_ARGS)
488 add_lit_target(check-all
489 "Running all regression tests"
490 ${LLVM_LIT_TESTSUITES}
491 PARAMS ${LLVM_LIT_PARAMS}
492 DEPENDS ${LLVM_LIT_DEPENDS}
493 ARGS ${LLVM_LIT_EXTRA_ARGS}
496 add_subdirectory(utils/perf-training)
499 option(CLANG_INCLUDE_DOCS "Generate build targets for the Clang docs."
500 ${LLVM_INCLUDE_DOCS})
501 if( CLANG_INCLUDE_DOCS )
502 add_subdirectory(docs)
505 add_subdirectory(cmake/modules)
508 message(STATUS "Setting current clang stage to: ${CLANG_STAGE}")
511 if (CLANG_ENABLE_BOOTSTRAP)
512 include(ExternalProject)
514 add_custom_target(clang-bootstrap-deps DEPENDS clang)
517 set(CLANG_STAGE stage1)
520 string(REGEX MATCH "stage([0-9]*)" MATCHED_STAGE "${CLANG_STAGE}")
522 if(NOT LLVM_BUILD_INSTRUMENTED)
523 math(EXPR STAGE_NUM "${CMAKE_MATCH_1} + 1")
524 set(NEXT_CLANG_STAGE stage${STAGE_NUM})
526 set(NEXT_CLANG_STAGE stage${CMAKE_MATCH_1})
529 set(NEXT_CLANG_STAGE bootstrap)
532 if(BOOTSTRAP_LLVM_BUILD_INSTRUMENTED)
533 set(NEXT_CLANG_STAGE ${NEXT_CLANG_STAGE}-instrumented)
535 message(STATUS "Setting next clang stage to: ${NEXT_CLANG_STAGE}")
538 set(STAMP_DIR ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-stamps/)
539 set(BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-bins/)
541 if(BOOTSTRAP_LLVM_ENABLE_LLD)
542 add_dependencies(clang-bootstrap-deps lld)
545 # If the next stage is LTO we need to depend on LTO and possibly lld or LLVMgold
546 if(BOOTSTRAP_LLVM_ENABLE_LTO OR LLVM_ENABLE_LTO AND NOT LLVM_BUILD_INSTRUMENTED)
548 add_dependencies(clang-bootstrap-deps LTO)
549 # on Darwin we need to set DARWIN_LTO_LIBRARY so that -flto will work
550 # using the just-built compiler, and we need to override DYLD_LIBRARY_PATH
551 # so that the host object file tools will use the just-built libLTO.
552 # However if System Integrity Protection is enabled the DYLD variables
553 # will be scrubbed from the environment of any base system commands. This
554 # includes /bin/sh, which ninja uses when executing build commands. To
555 # work around the envar being filtered away we pass it in as a CMake
556 # variable, and have LLVM's CMake append the envar to the archiver calls.
557 set(LTO_LIBRARY -DDARWIN_LTO_LIBRARY=${LLVM_SHLIB_OUTPUT_INTDIR}/libLTO.dylib
558 -DDYLD_LIBRARY_PATH=${LLVM_LIBRARY_OUTPUT_INTDIR})
560 add_dependencies(clang-bootstrap-deps llvm-ar llvm-ranlib)
561 if(NOT BOOTSTRAP_LLVM_ENABLE_LLD AND LLVM_BINUTILS_INCDIR)
562 add_dependencies(clang-bootstrap-deps LLVMgold)
564 set(LTO_AR -DCMAKE_AR=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ar)
565 set(LTO_RANLIB -DCMAKE_RANLIB=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ranlib)
569 add_custom_target(${NEXT_CLANG_STAGE}-clear
570 DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-cleared
573 OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-cleared
574 DEPENDS clang-bootstrap-deps
575 COMMAND ${CMAKE_COMMAND} -E remove_directory ${BINARY_DIR}
576 COMMAND ${CMAKE_COMMAND} -E make_directory ${BINARY_DIR}
577 COMMAND ${CMAKE_COMMAND} -E remove_directory ${STAMP_DIR}
578 COMMAND ${CMAKE_COMMAND} -E make_directory ${STAMP_DIR}
579 COMMENT "Clobberring ${NEXT_CLANG_STAGE} build and stamp directories"
582 if(CMAKE_VERBOSE_MAKEFILE)
583 set(verbose -DCMAKE_VERBOSE_MAKEFILE=On)
586 set(_BOOTSTRAP_DEFAULT_PASSTHROUGH
594 CLANG_VERSION_PATCHLEVEL
597 CLANG_REPOSITORY_STRING
599 CMAKE_OSX_ARCHITECTURES)
601 # We don't need to depend on compiler-rt if we're building instrumented
602 # because the next stage will use the same compiler used to build this stage.
603 if(TARGET compiler-rt AND NOT LLVM_BUILD_INSTRUMENTED)
604 add_dependencies(clang-bootstrap-deps compiler-rt)
607 set(C_COMPILER "clang")
608 set(CXX_COMPILER "clang++")
610 set(C_COMPILER "clang-cl.exe")
611 set(CXX_COMPILER "clang-cl.exe")
615 -DCMAKE_CXX_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/${CXX_COMPILER}
616 -DCMAKE_C_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/${C_COMPILER}
617 -DCMAKE_ASM_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/${C_COMPILER})
619 if(BOOTSTRAP_LLVM_BUILD_INSTRUMENTED)
620 add_dependencies(clang-bootstrap-deps llvm-profdata)
621 set(PGO_OPT -DLLVM_PROFDATA=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-profdata)
624 if(LLVM_BUILD_INSTRUMENTED)
625 add_dependencies(clang-bootstrap-deps generate-profdata)
626 set(PGO_OPT -DLLVM_PROFDATA_FILE=${CMAKE_CURRENT_BINARY_DIR}/utils/perf-training/clang.profdata)
627 # Use the current tools for LTO instead of the instrumented ones
628 list(APPEND _BOOTSTRAP_DEFAULT_PASSTHROUGH
637 set(COMPILER_OPTIONS)
643 # Find all variables that start with BOOTSTRAP_ and populate a variable with
645 get_cmake_property(variableNames VARIABLES)
646 foreach(variableName ${variableNames})
647 if(variableName MATCHES "^BOOTSTRAP_")
648 string(SUBSTRING ${variableName} 10 -1 varName)
649 string(REPLACE ";" "\;" value "${${variableName}}")
650 list(APPEND PASSTHROUGH_VARIABLES
651 -D${varName}=${value})
653 if(${variableName} AND variableName MATCHES "LLVM_EXTERNAL_.*_SOURCE_DIR")
654 list(APPEND PASSTHROUGH_VARIABLES
655 -D${variableName}=${${variableName}})
659 # Populate the passthrough variables
660 foreach(variableName ${CLANG_BOOTSTRAP_PASSTHROUGH} ${_BOOTSTRAP_DEFAULT_PASSTHROUGH})
661 if(DEFINED ${variableName})
662 if("${${variableName}}" STREQUAL "")
665 string(REPLACE ";" "\;" value ${${variableName}})
667 list(APPEND PASSTHROUGH_VARIABLES
668 -D${variableName}=${value})
672 ExternalProject_Add(${NEXT_CLANG_STAGE}
673 DEPENDS clang-bootstrap-deps
674 PREFIX ${NEXT_CLANG_STAGE}
675 SOURCE_DIR ${CMAKE_SOURCE_DIR}
676 STAMP_DIR ${STAMP_DIR}
677 BINARY_DIR ${BINARY_DIR}
680 # We shouldn't need to set this here, but INSTALL_DIR doesn't
681 # seem to work, so instead I'm passing this through
682 -DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}
683 ${CLANG_BOOTSTRAP_CMAKE_ARGS}
684 ${PASSTHROUGH_VARIABLES}
685 -DCLANG_STAGE=${NEXT_CLANG_STAGE}
687 ${LTO_LIBRARY} ${LTO_AR} ${LTO_RANLIB} ${verbose} ${PGO_OPT}
689 STEP_TARGETS configure build
690 USES_TERMINAL_CONFIGURE 1
691 USES_TERMINAL_BUILD 1
692 USES_TERMINAL_INSTALL 1
695 # exclude really-install from main target
696 set_target_properties(${NEXT_CLANG_STAGE} PROPERTIES _EP_really-install_EXCLUDE_FROM_MAIN On)
697 ExternalProject_Add_Step(${NEXT_CLANG_STAGE} really-install
698 COMMAND ${CMAKE_COMMAND} --build <BINARY_DIR> --target install
699 COMMENT "Performing install step for '${NEXT_CLANG_STAGE}'"
703 ExternalProject_Add_StepTargets(${NEXT_CLANG_STAGE} really-install)
704 add_custom_target(${NEXT_CLANG_STAGE}-install DEPENDS ${NEXT_CLANG_STAGE}-really-install)
706 if(NOT CLANG_BOOTSTRAP_TARGETS)
707 set(CLANG_BOOTSTRAP_TARGETS check-llvm check-clang check-all)
709 foreach(target ${CLANG_BOOTSTRAP_TARGETS})
710 # exclude from main target
711 set_target_properties(${NEXT_CLANG_STAGE} PROPERTIES _EP_${target}_EXCLUDE_FROM_MAIN On)
713 ExternalProject_Add_Step(${NEXT_CLANG_STAGE} ${target}
714 COMMAND ${CMAKE_COMMAND} --build <BINARY_DIR> --target ${target}
715 COMMENT "Performing ${target} for '${NEXT_CLANG_STAGE}'"
720 if(target MATCHES "^stage[0-9]*")
721 add_custom_target(${target} DEPENDS ${NEXT_CLANG_STAGE}-${target})
724 ExternalProject_Add_StepTargets(${NEXT_CLANG_STAGE} ${target})
728 if (LLVM_ADD_NATIVE_VISUALIZERS_TO_SOLUTION)
729 add_subdirectory(utils/ClangVisualizers)
733 ${CLANG_SOURCE_DIR}/include/clang/Config/config.h.cmake
734 ${CLANG_BINARY_DIR}/include/clang/Config/config.h)