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}
21 COMMAND ${CONFIG_COMMAND}
22 RESULT_VARIABLE HAD_ERROR
23 OUTPUT_VARIABLE CONFIG_OUTPUT
27 "[ \t]*[\r\n]+[ \t]*" ";"
28 CONFIG_OUTPUT ${CONFIG_OUTPUT})
30 string(REPLACE ";" " " CONFIG_COMMAND_STR "${CONFIG_COMMAND}")
31 message(STATUS "${CONFIG_COMMAND_STR}")
32 message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}")
35 message(FATAL_ERROR "llvm-config not found -- ${LLVM_CONFIG}")
38 list(GET CONFIG_OUTPUT 0 ENABLE_ASSERTIONS)
39 list(GET CONFIG_OUTPUT 1 TOOLS_BINARY_DIR)
40 list(GET CONFIG_OUTPUT 2 LIBRARY_DIR)
41 list(GET CONFIG_OUTPUT 3 INCLUDE_DIR)
42 list(GET CONFIG_OUTPUT 4 LLVM_OBJ_ROOT)
43 list(GET CONFIG_OUTPUT 5 MAIN_SRC_DIR)
46 set(LLVM_ENABLE_ASSERTIONS ${ENABLE_ASSERTIONS}
47 CACHE BOOL "Enable assertions")
48 # Assertions should follow llvm-config's.
49 mark_as_advanced(LLVM_ENABLE_ASSERTIONS)
52 set(LLVM_TOOLS_BINARY_DIR ${TOOLS_BINARY_DIR} CACHE PATH "Path to llvm/bin")
53 set(LLVM_LIBRARY_DIR ${LIBRARY_DIR} CACHE PATH "Path to llvm/lib")
54 set(LLVM_MAIN_INCLUDE_DIR ${INCLUDE_DIR} CACHE PATH "Path to llvm/include")
55 set(LLVM_BINARY_DIR ${LLVM_OBJ_ROOT} CACHE PATH "Path to LLVM build tree")
56 set(LLVM_MAIN_SRC_DIR ${MAIN_SRC_DIR} CACHE PATH "Path to LLVM source tree")
58 find_program(LLVM_TABLEGEN_EXE "llvm-tblgen" ${LLVM_TOOLS_BINARY_DIR}
61 set(LLVM_CMAKE_PATH "${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm")
62 set(LLVMCONFIG_FILE "${LLVM_CMAKE_PATH}/LLVMConfig.cmake")
63 if(EXISTS ${LLVMCONFIG_FILE})
64 list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}")
65 include(${LLVMCONFIG_FILE})
67 message(FATAL_ERROR "Not found: ${LLVMCONFIG_FILE}")
70 # They are used as destination of target generators.
71 set(LLVM_RUNTIME_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/bin)
72 set(LLVM_LIBRARY_OUTPUT_INTDIR ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX})
74 # DLL platform -- put DLLs into bin.
75 set(LLVM_SHLIB_OUTPUT_INTDIR ${LLVM_RUNTIME_OUTPUT_INTDIR})
77 set(LLVM_SHLIB_OUTPUT_INTDIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
80 option(LLVM_INSTALL_TOOLCHAIN_ONLY
81 "Only include toolchain files in the 'install' target." OFF)
83 option(LLVM_FORCE_USE_OLD_HOST_TOOLCHAIN
84 "Set to ON to force using an old, unsupported host toolchain." OFF)
85 option(CLANG_ENABLE_BOOTSTRAP "Generate the clang bootstrap target" OFF)
89 include(HandleLLVMOptions)
90 include(VersionFromVCS)
92 set(PACKAGE_VERSION "${LLVM_PACKAGE_VERSION}")
94 if (NOT DEFINED LLVM_INCLUDE_TESTS)
95 set(LLVM_INCLUDE_TESTS ON)
98 include_directories("${LLVM_BINARY_DIR}/include" "${LLVM_MAIN_INCLUDE_DIR}")
99 link_directories("${LLVM_LIBRARY_DIR}")
101 set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin )
102 set( CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} )
103 set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} )
105 if(LLVM_INCLUDE_TESTS)
106 set(Python_ADDITIONAL_VERSIONS 2.7)
107 include(FindPythonInterp)
108 if(NOT PYTHONINTERP_FOUND)
110 "Unable to find Python interpreter, required for builds and testing.
112 Please install Python or specify the PYTHON_EXECUTABLE CMake variable.")
115 if( ${PYTHON_VERSION_STRING} VERSION_LESS 2.7 )
116 message(FATAL_ERROR "Python 2.7 or newer is required")
119 # Check prebuilt llvm/utils.
120 if(EXISTS ${LLVM_TOOLS_BINARY_DIR}/FileCheck${CMAKE_EXECUTABLE_SUFFIX}
121 AND EXISTS ${LLVM_TOOLS_BINARY_DIR}/count${CMAKE_EXECUTABLE_SUFFIX}
122 AND EXISTS ${LLVM_TOOLS_BINARY_DIR}/not${CMAKE_EXECUTABLE_SUFFIX})
123 set(LLVM_UTILS_PROVIDED ON)
126 if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py)
127 set(LLVM_LIT ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py)
128 if(NOT LLVM_UTILS_PROVIDED)
129 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/FileCheck utils/FileCheck)
130 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/count utils/count)
131 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/not utils/not)
132 set(LLVM_UTILS_PROVIDED ON)
133 set(CLANG_TEST_DEPS FileCheck count not)
135 set(UNITTEST_DIR ${LLVM_MAIN_SRC_DIR}/utils/unittest)
136 if(EXISTS ${UNITTEST_DIR}/googletest/include/gtest/gtest.h
137 AND NOT EXISTS ${LLVM_LIBRARY_DIR}/${CMAKE_STATIC_LIBRARY_PREFIX}gtest${CMAKE_STATIC_LIBRARY_SUFFIX}
138 AND EXISTS ${UNITTEST_DIR}/CMakeLists.txt)
139 add_subdirectory(${UNITTEST_DIR} utils/unittest)
142 # Seek installed Lit.
143 find_program(LLVM_LIT "lit.py" ${LLVM_MAIN_SRC_DIR}/utils/lit
144 DOC "Path to lit.py")
148 # Define the default arguments to use with 'lit', and an option for the user
150 set(LIT_ARGS_DEFAULT "-sv")
152 set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar")
154 set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit")
156 # On Win32 hosts, provide an option to specify the path to the GnuWin32 tools.
157 if( WIN32 AND NOT CYGWIN )
158 set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools")
161 set(LLVM_INCLUDE_TESTS OFF)
165 set( CLANG_BUILT_STANDALONE 1 )
166 set(BACKEND_PACKAGE_STRING "LLVM ${LLVM_PACKAGE_VERSION}")
168 set(BACKEND_PACKAGE_STRING "${PACKAGE_STRING}")
171 # Make sure that our source directory is on the current cmake module path so that
172 # we can include cmake files from this directory.
173 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules")
175 find_package(LibXml2 2.5.3 QUIET)
177 set(CLANG_HAVE_LIBXML 1)
180 include(CheckIncludeFile)
181 check_include_file(sys/resource.h CLANG_HAVE_RLIMITS)
183 set(CLANG_RESOURCE_DIR "" CACHE STRING
184 "Relative directory from the Clang binary to its resource files.")
186 set(C_INCLUDE_DIRS "" CACHE STRING
187 "Colon separated list of directories clang will search for headers.")
189 set(GCC_INSTALL_PREFIX "" CACHE PATH "Directory where gcc is installed." )
190 set(DEFAULT_SYSROOT "" CACHE PATH
191 "Default <path> to all compiler invocations for --sysroot=<path>." )
193 set(ENABLE_LINKER_BUILD_ID OFF CACHE BOOL "pass --build-id to ld")
195 set(ENABLE_X86_RELAX_RELOCATIONS OFF CACHE BOOL
196 "enable x86 relax relocations by default")
198 set(CLANG_DEFAULT_CXX_STDLIB "" CACHE STRING
199 "Default C++ stdlib to use (\"libstdc++\" or \"libc++\", empty for platform default")
200 if (NOT(CLANG_DEFAULT_CXX_STDLIB STREQUAL "" OR
201 CLANG_DEFAULT_CXX_STDLIB STREQUAL "libstdc++" OR
202 CLANG_DEFAULT_CXX_STDLIB STREQUAL "libc++"))
203 message(WARNING "Resetting default C++ stdlib to use platform default")
204 set(CLANG_DEFAULT_CXX_STDLIB "" CACHE STRING
205 "Default C++ stdlib to use (\"libstdc++\" or \"libc++\", empty for platform default" FORCE)
208 set(CLANG_DEFAULT_RTLIB "" CACHE STRING
209 "Default runtime library to use (\"libgcc\" or \"compiler-rt\", empty for platform default)")
210 if (NOT(CLANG_DEFAULT_RTLIB STREQUAL "" OR
211 CLANG_DEFAULT_RTLIB STREQUAL "libgcc" OR
212 CLANG_DEFAULT_RTLIB STREQUAL "compiler-rt"))
213 message(WARNING "Resetting default rtlib to use platform default")
214 set(CLANG_DEFAULT_RTLIB "" CACHE STRING
215 "Default runtime library to use (\"libgcc\" or \"compiler-rt\", empty for platform default)" FORCE)
218 set(CLANG_DEFAULT_OPENMP_RUNTIME "libomp" CACHE STRING
219 "Default OpenMP runtime used by -fopenmp.")
221 set(CLANG_VENDOR ${PACKAGE_VENDOR} CACHE STRING
222 "Vendor-specific text for showing with version information.")
225 add_definitions( -DCLANG_VENDOR="${CLANG_VENDOR} " )
228 set(CLANG_REPOSITORY_STRING "" CACHE STRING
229 "Vendor-specific text for showing the repository the source is taken from.")
231 if(CLANG_REPOSITORY_STRING)
232 add_definitions(-DCLANG_REPOSITORY_STRING="${CLANG_REPOSITORY_STRING}")
235 set(CLANG_VENDOR_UTI "org.llvm.clang" CACHE STRING
236 "Vendor-specific uti.")
238 # The libdir suffix must exactly match whatever LLVM's configuration used.
239 set(CLANG_LIBDIR_SUFFIX "${LLVM_LIBDIR_SUFFIX}")
241 set(CLANG_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
242 set(CLANG_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
244 if( CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR AND NOT MSVC_IDE )
245 message(FATAL_ERROR "In-source builds are not allowed. CMake would overwrite "
246 "the makefiles distributed with LLVM. Please create a directory and run cmake "
247 "from there, passing the path to this source directory as the last argument. "
248 "This process created the file `CMakeCache.txt' and the directory "
249 "`CMakeFiles'. Please delete them.")
252 if( NOT CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR )
254 tablegenned_files_on_include_dir
255 "${CLANG_SOURCE_DIR}/include/clang/*.inc")
256 if( tablegenned_files_on_include_dir )
257 message(FATAL_ERROR "Apparently there is a previous in-source build, "
258 "probably as the result of running `configure' and `make' on "
259 "${CLANG_SOURCE_DIR}. This may cause problems. The suspicious files are:\n"
260 "${tablegenned_files_on_include_dir}\nPlease clean the source directory.")
264 # Compute the Clang version from the LLVM version.
265 string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" CLANG_VERSION
267 message(STATUS "Clang version: ${CLANG_VERSION}")
269 string(REGEX REPLACE "([0-9]+)\\.[0-9]+(\\.[0-9]+)?" "\\1" CLANG_VERSION_MAJOR
271 string(REGEX REPLACE "[0-9]+\\.([0-9]+)(\\.[0-9]+)?" "\\1" CLANG_VERSION_MINOR
273 if (${CLANG_VERSION} MATCHES "[0-9]+\\.[0-9]+\\.[0-9]+")
274 set(CLANG_HAS_VERSION_PATCHLEVEL 1)
275 string(REGEX REPLACE "[0-9]+\\.[0-9]+\\.([0-9]+)" "\\1" CLANG_VERSION_PATCHLEVEL
278 set(CLANG_HAS_VERSION_PATCHLEVEL 0)
281 # Configure the Version.inc file.
283 ${CMAKE_CURRENT_SOURCE_DIR}/include/clang/Basic/Version.inc.in
284 ${CMAKE_CURRENT_BINARY_DIR}/include/clang/Basic/Version.inc)
286 # Add appropriate flags for GCC
287 if (LLVM_COMPILER_IS_GCC_COMPATIBLE)
288 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-common -Woverloaded-virtual")
289 if (NOT "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
290 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-strict-aliasing")
293 # Enable -pedantic for Clang even if it's not enabled for LLVM.
294 if (NOT LLVM_ENABLE_PEDANTIC)
295 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic -Wno-long-long")
298 check_cxx_compiler_flag("-Werror -Wnested-anon-types" CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG)
299 if( CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG )
300 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-nested-anon-types" )
304 # Determine HOST_LINK_VERSION on Darwin.
305 set(HOST_LINK_VERSION)
309 COMMAND sh -c "${CMAKE_LINKER} -v 2>&1 | head -1"
310 RESULT_VARIABLE HAD_ERROR
311 OUTPUT_VARIABLE LD_V_OUTPUT
314 if ("${LD_V_OUTPUT}" MATCHES ".*ld64-([0-9.]+).*")
315 string(REGEX REPLACE ".*ld64-([0-9.]+).*" "\\1" HOST_LINK_VERSION ${LD_V_OUTPUT})
316 elseif ("${LD_V_OUTPUT}" MATCHES "[^0-9]*([0-9.]+).*")
317 string(REGEX REPLACE "[^0-9]*([0-9.]+).*" "\\1" HOST_LINK_VERSION ${LD_V_OUTPUT})
320 message(FATAL_ERROR "${CMAKE_LINKER} failed with status ${HAD_ERROR}")
325 ${CLANG_SOURCE_DIR}/include/clang/Config/config.h.cmake
326 ${CLANG_BINARY_DIR}/include/clang/Config/config.h)
328 include(CMakeParseArguments)
331 set(CMAKE_INCLUDE_CURRENT_DIR ON)
333 include_directories(BEFORE
334 ${CMAKE_CURRENT_BINARY_DIR}/include
335 ${CMAKE_CURRENT_SOURCE_DIR}/include
338 if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
339 install(DIRECTORY include/clang include/clang-c
344 PATTERN "config.h" EXCLUDE
345 PATTERN ".svn" EXCLUDE
348 install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/include/clang
351 PATTERN "CMakeFiles" EXCLUDE
357 add_definitions( -D_GNU_SOURCE )
359 option(CLANG_BUILD_TOOLS
360 "Build the Clang tools. If OFF, just generate build targets." ON)
362 option(CLANG_ENABLE_ARCMT "Build ARCMT." ON)
363 if (CLANG_ENABLE_ARCMT)
364 set(ENABLE_CLANG_ARCMT "1")
366 set(ENABLE_CLANG_ARCMT "0")
369 option(CLANG_ENABLE_STATIC_ANALYZER "Build static analyzer." ON)
370 if (CLANG_ENABLE_STATIC_ANALYZER)
371 set(ENABLE_CLANG_STATIC_ANALYZER "1")
373 set(ENABLE_CLANG_STATIC_ANALYZER "0")
376 if (NOT CLANG_ENABLE_STATIC_ANALYZER AND CLANG_ENABLE_ARCMT)
377 message(FATAL_ERROR "Cannot disable static analyzer while enabling ARCMT")
380 if(CLANG_ENABLE_ARCMT)
381 add_definitions(-DCLANG_ENABLE_ARCMT)
382 add_definitions(-DCLANG_ENABLE_OBJC_REWRITER)
384 if(CLANG_ENABLE_STATIC_ANALYZER)
385 add_definitions(-DCLANG_ENABLE_STATIC_ANALYZER)
388 # Clang version information
389 set(CLANG_EXECUTABLE_VERSION
390 "${CLANG_VERSION_MAJOR}.${CLANG_VERSION_MINOR}" CACHE STRING
391 "Version number that will be placed into the clang executable, in the form XX.YY")
392 set(LIBCLANG_LIBRARY_VERSION
393 "${CLANG_VERSION_MAJOR}.${CLANG_VERSION_MINOR}" CACHE STRING
394 "Version number that will be placed into the libclang library , in the form XX.YY")
395 mark_as_advanced(CLANG_EXECUTABLE_VERSION LIBCLANG_LIBRARY_VERSION)
397 option(CLANG_INCLUDE_TESTS
398 "Generate build targets for the Clang unit tests."
399 ${LLVM_INCLUDE_TESTS})
401 add_subdirectory(utils/TableGen)
403 add_subdirectory(include)
405 # All targets below may depend on all tablegen'd files.
406 get_property(CLANG_TABLEGEN_TARGETS GLOBAL PROPERTY CLANG_TABLEGEN_TARGETS)
407 list(APPEND LLVM_COMMON_DEPENDS ${CLANG_TABLEGEN_TARGETS})
409 add_subdirectory(lib)
410 add_subdirectory(tools)
411 add_subdirectory(runtime)
413 option(CLANG_BUILD_EXAMPLES "Build CLANG example programs by default." OFF)
414 if (CLANG_BUILD_EXAMPLES)
415 set(ENABLE_CLANG_EXAMPLES "1")
417 set(ENABLE_CLANG_EXAMPLES "0")
419 add_subdirectory(examples)
421 if( CLANG_INCLUDE_TESTS )
422 if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/unittest/googletest/include/gtest/gtest.h)
423 add_subdirectory(unittests)
424 list(APPEND CLANG_TEST_DEPS ClangUnitTests)
425 list(APPEND CLANG_TEST_PARAMS
426 clang_unit_site_config=${CMAKE_CURRENT_BINARY_DIR}/test/Unit/lit.site.cfg
429 add_subdirectory(test)
431 if(CLANG_BUILT_STANDALONE)
432 # Add a global check rule now that all subdirectories have been traversed
433 # and we know the total set of lit testsuites.
434 get_property(LLVM_LIT_TESTSUITES GLOBAL PROPERTY LLVM_LIT_TESTSUITES)
435 get_property(LLVM_LIT_PARAMS GLOBAL PROPERTY LLVM_LIT_PARAMS)
436 get_property(LLVM_LIT_DEPENDS GLOBAL PROPERTY LLVM_LIT_DEPENDS)
437 get_property(LLVM_LIT_EXTRA_ARGS GLOBAL PROPERTY LLVM_LIT_EXTRA_ARGS)
438 add_lit_target(check-all
439 "Running all regression tests"
440 ${LLVM_LIT_TESTSUITES}
441 PARAMS ${LLVM_LIT_PARAMS}
442 DEPENDS ${LLVM_LIT_DEPENDS}
443 ARGS ${LLVM_LIT_EXTRA_ARGS}
446 add_subdirectory(utils/perf-training)
449 option(CLANG_INCLUDE_DOCS "Generate build targets for the Clang docs."
450 ${LLVM_INCLUDE_DOCS})
451 if( CLANG_INCLUDE_DOCS )
452 add_subdirectory(docs)
457 # this line is needed as a cleanup to ensure that any CMakeCaches with the old
458 # default value get updated to the new default.
459 if(CLANG_ORDER_FILE STREQUAL "")
460 unset(CLANG_ORDER_FILE CACHE)
461 unset(CLANG_ORDER_FILE)
465 set(CLANG_ORDER_FILE ${CMAKE_CURRENT_BINARY_DIR}/clang.order CACHE FILEPATH
466 "Order file to use when compiling clang in order to improve startup time (Darwin Only - requires ld64).")
468 if(CLANG_ORDER_FILE AND NOT EXISTS ${CLANG_ORDER_FILE})
469 string(FIND "${CLANG_ORDER_FILE}" "${CMAKE_CURRENT_BINARY_DIR}" PATH_START)
470 if(PATH_START EQUAL 0)
471 file(WRITE ${CLANG_ORDER_FILE} "\n")
473 message(FATAL_ERROR "Specified order file '${CLANG_ORDER_FILE}' does not exist.")
478 add_subdirectory(cmake/modules)
481 message(STATUS "Setting current clang stage to: ${CLANG_STAGE}")
484 if (CLANG_ENABLE_BOOTSTRAP)
485 include(ExternalProject)
488 set(CLANG_STAGE stage1)
491 string(REGEX MATCH "stage([0-9]*)" MATCHED_STAGE "${CLANG_STAGE}")
493 if(NOT LLVM_BUILD_INSTRUMENTED)
494 math(EXPR STAGE_NUM "${CMAKE_MATCH_1} + 1")
495 set(NEXT_CLANG_STAGE stage${STAGE_NUM})
497 set(NEXT_CLANG_STAGE stage${CMAKE_MATCH_1})
500 set(NEXT_CLANG_STAGE bootstrap)
503 if(BOOTSTRAP_LLVM_BUILD_INSTRUMENTED)
504 set(NEXT_CLANG_STAGE ${NEXT_CLANG_STAGE}-instrumented)
506 message(STATUS "Setting next clang stage to: ${NEXT_CLANG_STAGE}")
509 set(STAMP_DIR ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-stamps/)
510 set(BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-bins/)
512 # If the next stage is LTO we need to depend on LTO and possibly LLVMgold
513 if(BOOTSTRAP_LLVM_ENABLE_LTO OR LLVM_ENABLE_LTO)
516 # on Darwin we need to set DARWIN_LTO_LIBRARY so that -flto will work
517 # using the just-built compiler, and we need to override DYLD_LIBRARY_PATH
518 # so that the host object file tools will use the just-built libLTO.
519 # However if System Integrity Protection is enabled the DYLD variables
520 # will be scrubbed from the environment of any base system commands. This
521 # includes /bin/sh, which ninja uses when executing build commands. To
522 # work around the envar being filtered away we pass it in as a CMake
523 # variable, and have LLVM's CMake append the envar to the archiver calls.
524 set(LTO_LIBRARY -DDARWIN_LTO_LIBRARY=${LLVM_SHLIB_OUTPUT_INTDIR}/libLTO.dylib
525 -DDYLD_LIBRARY_PATH=${LLVM_LIBRARY_OUTPUT_INTDIR})
527 list(APPEND LTO_DEP LLVMgold llvm-ar llvm-ranlib)
528 set(LTO_AR -DCMAKE_AR=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ar)
529 set(LTO_RANLIB -DCMAKE_RANLIB=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ranlib)
533 add_custom_target(${NEXT_CLANG_STAGE}-clear
534 DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-cleared
537 OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${NEXT_CLANG_STAGE}-cleared
538 DEPENDS clang ${LTO_DEP}
539 COMMAND ${CMAKE_COMMAND} -E remove_directory ${BINARY_DIR}
540 COMMAND ${CMAKE_COMMAND} -E make_directory ${BINARY_DIR}
541 COMMAND ${CMAKE_COMMAND} -E remove_directory ${STAMP_DIR}
542 COMMAND ${CMAKE_COMMAND} -E make_directory ${STAMP_DIR}
543 COMMENT "Clobberring ${NEXT_CLANG_STAGE} build and stamp directories"
546 if(CMAKE_VERBOSE_MAKEFILE)
547 set(verbose -DCMAKE_VERBOSE_MAKEFILE=On)
550 set(_BOOTSTRAP_DEFAULT_PASSTHROUGH
557 CLANG_REPOSITORY_STRING
560 if(TARGET compiler-rt)
561 set(RUNTIME_DEP compiler-rt)
565 -DCMAKE_CXX_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang++
566 -DCMAKE_C_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang
567 -DCMAKE_ASM_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang)
569 if(BOOTSTRAP_LLVM_BUILD_INSTRUMENTED)
570 set(PGO_DEP llvm-profdata)
571 set(PGO_OPT -DLLVM_PROFDATA=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-profdata)
574 if(LLVM_BUILD_INSTRUMENTED)
575 set(PGO_DEP generate-profdata)
576 set(PGO_OPT -DLLVM_PROFDATA_FILE=${CMAKE_CURRENT_BINARY_DIR}/utils/perf-training/clang.profdata)
577 # Use the current tools for LTO instead of the instrumented ones
578 list(APPEND _BOOTSTRAP_DEFAULT_PASSTHROUGH
587 set(COMPILER_OPTIONS)
589 set(RUNTIME_DEP) # Don't set runtime dependencies
590 set(LTO_DEP) # Don't need to depend on LTO
595 # Find all variables that start with BOOTSTRAP_ and populate a variable with
597 get_cmake_property(variableNames VARIABLES)
598 foreach(variableName ${variableNames})
599 if(variableName MATCHES "^BOOTSTRAP_")
600 string(SUBSTRING ${variableName} 10 -1 varName)
601 string(REPLACE ";" "\;" value "${${variableName}}")
602 list(APPEND PASSTHROUGH_VARIABLES
603 -D${varName}=${value})
605 if(${variableName} AND variableName MATCHES "LLVM_EXTERNAL_.*_SOURCE_DIR")
606 list(APPEND PASSTHROUGH_VARIABLES
607 -D${variableName}=${${variableName}})
611 # Populate the passthrough variables
612 foreach(variableName ${CLANG_BOOTSTRAP_PASSTHROUGH} ${_BOOTSTRAP_DEFAULT_PASSTHROUGH})
614 string(REPLACE ";" "\;" value ${${variableName}})
615 list(APPEND PASSTHROUGH_VARIABLES
616 -D${variableName}=${value})
620 ExternalProject_Add(${NEXT_CLANG_STAGE}
621 DEPENDS clang ${LTO_DEP} ${RUNTIME_DEP} ${PGO_DEP}
622 PREFIX ${NEXT_CLANG_STAGE}
623 SOURCE_DIR ${CMAKE_SOURCE_DIR}
624 STAMP_DIR ${STAMP_DIR}
625 BINARY_DIR ${BINARY_DIR}
628 # We shouldn't need to set this here, but INSTALL_DIR doesn't
629 # seem to work, so instead I'm passing this through
630 -DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}
631 ${CLANG_BOOTSTRAP_CMAKE_ARGS}
632 ${PASSTHROUGH_VARIABLES}
633 -DCLANG_STAGE=${NEXT_CLANG_STAGE}
635 ${LTO_LIBRARY} ${LTO_AR} ${LTO_RANLIB} ${verbose} ${PGO_OPT}
637 STEP_TARGETS configure build
638 USES_TERMINAL_CONFIGURE 1
639 USES_TERMINAL_BUILD 1
640 USES_TERMINAL_INSTALL 1
643 # exclude really-install from main target
644 set_target_properties(${NEXT_CLANG_STAGE} PROPERTIES _EP_really-install_EXCLUDE_FROM_MAIN On)
645 ExternalProject_Add_Step(${NEXT_CLANG_STAGE} really-install
646 COMMAND ${CMAKE_COMMAND} --build <BINARY_DIR> --target install
647 COMMENT "Performing install step for '${NEXT_CLANG_STAGE}'"
651 ExternalProject_Add_StepTargets(${NEXT_CLANG_STAGE} really-install)
652 add_custom_target(${NEXT_CLANG_STAGE}-install DEPENDS ${NEXT_CLANG_STAGE}-really-install)
654 if(NOT CLANG_BOOTSTRAP_TARGETS)
655 set(CLANG_BOOTSTRAP_TARGETS check-llvm check-clang check-all)
657 foreach(target ${CLANG_BOOTSTRAP_TARGETS})
658 # exclude from main target
659 set_target_properties(${NEXT_CLANG_STAGE} PROPERTIES _EP_${target}_EXCLUDE_FROM_MAIN On)
661 ExternalProject_Add_Step(${NEXT_CLANG_STAGE} ${target}
662 COMMAND ${CMAKE_COMMAND} --build <BINARY_DIR> --target ${target}
663 COMMENT "Performing ${target} for '${NEXT_CLANG_STAGE}'"
668 if(target MATCHES "^stage[0-9]*")
669 add_custom_target(${target} DEPENDS ${NEXT_CLANG_STAGE}-${target})
672 ExternalProject_Add_StepTargets(${NEXT_CLANG_STAGE} ${target})
676 if (LLVM_ADD_NATIVE_VISUALIZERS_TO_SOLUTION)
677 add_subdirectory(utils/ClangVisualizers)