1 # CMake build for CompilerRT.
3 # An important constraint of the build is that it only produces libraries
4 # based on the ability of the host toolchain to target various platforms.
6 cmake_minimum_required(VERSION 3.4.3)
8 # Check if compiler-rt is built as a standalone project.
9 if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR OR COMPILER_RT_STANDALONE_BUILD)
10 project(CompilerRT C CXX ASM)
11 set(COMPILER_RT_STANDALONE_BUILD TRUE)
12 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
15 # Add path for custom compiler-rt modules.
16 list(INSERT CMAKE_MODULE_PATH 0
17 "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
18 "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
21 if(CMAKE_CONFIGURATION_TYPES)
22 set(CMAKE_CFG_RESOLVED_INTDIR "${CMAKE_CFG_INTDIR}/")
24 set(CMAKE_CFG_RESOLVED_INTDIR "")
27 include(base-config-ix)
28 include(CompilerRTUtils)
30 option(COMPILER_RT_BUILD_BUILTINS "Build builtins" ON)
31 mark_as_advanced(COMPILER_RT_BUILD_BUILTINS)
32 option(COMPILER_RT_BUILD_SANITIZERS "Build sanitizers" ON)
33 mark_as_advanced(COMPILER_RT_BUILD_SANITIZERS)
34 option(COMPILER_RT_BUILD_XRAY "Build xray" ON)
35 mark_as_advanced(COMPILER_RT_BUILD_XRAY)
36 option(COMPILER_RT_BUILD_LIBFUZZER "Build libFuzzer" ON)
37 mark_as_advanced(COMPILER_RT_BUILD_LIBFUZZER)
38 option(COMPILER_RT_BUILD_PROFILE "Build profile runtime" ON)
39 mark_as_advanced(COMPILER_RT_BUILD_PROFILE)
40 option(COMPILER_RT_BUILD_XRAY_NO_PREINIT "Build xray with no preinit patching" OFF)
41 mark_as_advanced(COMPILER_RT_BUILD_XRAY_NO_PREINIT)
43 set(COMPILER_RT_ASAN_SHADOW_SCALE ""
44 CACHE STRING "Override the shadow scale to be used in ASan runtime")
46 if (NOT COMPILER_RT_ASAN_SHADOW_SCALE STREQUAL "")
47 # Check that the shadow scale value is valid.
48 if (NOT (COMPILER_RT_ASAN_SHADOW_SCALE GREATER -1 AND
49 COMPILER_RT_ASAN_SHADOW_SCALE LESS 8))
51 Invalid ASan Shadow Scale '${COMPILER_RT_ASAN_SHADOW_SCALE}'.")
54 set(COMPILER_RT_ASAN_SHADOW_SCALE_LLVM_FLAG
55 -mllvm -asan-mapping-scale=${COMPILER_RT_ASAN_SHADOW_SCALE})
56 set(COMPILER_RT_ASAN_SHADOW_SCALE_DEFINITION
57 ASAN_SHADOW_SCALE=${COMPILER_RT_ASAN_SHADOW_SCALE})
58 set(COMPILER_RT_ASAN_SHADOW_SCALE_FLAG
59 -D${COMPILER_RT_ASAN_SHADOW_SCALE_DEFINITION})
62 set(COMPILER_RT_HWASAN_WITH_INTERCEPTORS ON CACHE BOOLEAN
63 "Enable libc interceptors in HWASan (testing mode)")
65 set(COMPILER_RT_BAREMETAL_BUILD OFF CACHE BOOLEAN
66 "Build for a bare-metal target.")
68 if (COMPILER_RT_STANDALONE_BUILD)
70 if (TARGET intrinsics_gen)
71 # Loading the llvm config causes this target to be imported so place it
72 # under the appropriate folder in an IDE.
73 set_target_properties(intrinsics_gen PROPERTIES FOLDER "Compiler-RT Misc")
76 # Find Python interpreter.
77 set(Python_ADDITIONAL_VERSIONS 2.7 2.6 2.5)
78 include(FindPythonInterp)
79 if(NOT PYTHONINTERP_FOUND)
81 Unable to find Python interpreter required testing. Please install Python
82 or specify the PYTHON_EXECUTABLE CMake variable.")
85 # Ensure that fat libraries are built correctly on Darwin
86 if(CMAKE_SYSTEM_NAME STREQUAL Darwin)
88 find_program(CMAKE_XCRUN
92 execute_process(COMMAND
93 ${CMAKE_XCRUN} -find libtool
96 OUTPUT_STRIP_TRAILING_WHITESPACE)
99 if(NOT CMAKE_LIBTOOL OR NOT EXISTS CMAKE_LIBTOOL)
100 find_program(CMAKE_LIBTOOL
106 get_property(languages GLOBAL PROPERTY ENABLED_LANGUAGES)
109 set(CMAKE_LIBTOOL ${CMAKE_LIBTOOL} CACHE PATH "libtool executable")
110 message(STATUS "Found libtool - ${CMAKE_LIBTOOL}")
112 execute_process(COMMAND
116 OUTPUT_STRIP_TRAILING_WHITESPACE)
117 if("${LIBTOOL_V_OUTPUT}" MATCHES ".*cctools-([0-9]+).*")
118 string(REGEX REPLACE ".*cctools-([0-9]+).*" "\\1" LIBTOOL_VERSION ${LIBTOOL_V_OUTPUT})
119 if(NOT LIBTOOL_VERSION VERSION_LESS "862")
120 set(LIBTOOL_NO_WARNING_FLAG "-no_warning_for_no_symbols")
124 foreach(lang ${languages})
125 set(CMAKE_${lang}_CREATE_STATIC_LIBRARY "\"${CMAKE_LIBTOOL}\" -static ${LIBTOOL_NO_WARNING_FLAG} -o <TARGET> <LINK_FLAGS> <OBJECTS>")
130 if(DYLD_LIBRARY_PATH)
131 set(dyld_envar "DYLD_LIBRARY_PATH=${DYLD_LIBRARY_PATH}")
132 foreach(lang ${languages})
133 foreach(cmd ${CMAKE_${lang}_CREATE_STATIC_LIBRARY})
134 list(APPEND CMAKE_${lang}_CREATE_STATIC_LIBRARY_NEW "${dyld_envar} ${cmd}")
140 # Define default arguments to lit.
141 set(LIT_ARGS_DEFAULT "-sv")
143 set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar")
145 set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit")
146 set(LLVM_LIT_OUTPUT_DIR "${COMPILER_RT_EXEC_OUTPUT_DIR}")
149 construct_compiler_rt_default_triple()
150 if ("${COMPILER_RT_DEFAULT_TARGET_TRIPLE}" MATCHES ".*hf$")
151 if (${COMPILER_RT_DEFAULT_TARGET_ARCH} MATCHES "^arm")
152 set(COMPILER_RT_DEFAULT_TARGET_ARCH "armhf")
155 if ("${COMPILER_RT_DEFAULT_TARGET_TRIPLE}" MATCHES ".*android.*")
158 pythonize_bool(ANDROID)
160 set(COMPILER_RT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
161 set(COMPILER_RT_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
163 pythonize_bool(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR)
165 # We support running instrumented tests when we're not cross compiling
166 # and target a UNIX-like system or Windows.
167 # We can run tests on Android even when we are cross-compiling.
168 if(("${CMAKE_HOST_SYSTEM}" STREQUAL "${CMAKE_SYSTEM}" AND (UNIX OR WIN32)) OR ANDROID
169 OR COMPILER_RT_EMULATOR)
170 option(COMPILER_RT_CAN_EXECUTE_TESTS "Can we execute instrumented tests" ON)
172 option(COMPILER_RT_CAN_EXECUTE_TESTS "Can we execute instrumented tests" OFF)
175 option(COMPILER_RT_DEBUG "Build runtimes with full debug info" OFF)
176 option(COMPILER_RT_EXTERNALIZE_DEBUGINFO
177 "Generate dSYM files and strip executables and libraries (Darwin Only)" OFF)
178 # COMPILER_RT_DEBUG_PYBOOL is used by lit.common.configured.in.
179 pythonize_bool(COMPILER_RT_DEBUG)
181 if(APPLE AND SANITIZER_MIN_OSX_VERSION AND SANITIZER_MIN_OSX_VERSION VERSION_LESS "10.9")
182 # Mac OS X prior to 10.9 had problems with exporting symbols from
184 set(cxxabi_supported OFF)
186 set(cxxabi_supported ON)
189 option(SANITIZER_ALLOW_CXXABI "Allow use of C++ ABI details in ubsan" ON)
191 set(SANITIZE_CAN_USE_CXXABI OFF)
192 if (cxxabi_supported AND SANITIZER_ALLOW_CXXABI)
193 set(SANITIZER_CAN_USE_CXXABI ON)
195 pythonize_bool(SANITIZER_CAN_USE_CXXABI)
197 set(SANITIZER_CXX_ABI "default" CACHE STRING
198 "Specify C++ ABI library to use.")
199 set(CXXABIS none default libstdc++ libc++)
200 set_property(CACHE SANITIZER_CXX_ABI PROPERTY STRINGS ;${CXXABIS})
202 if (SANITIZER_CXX_ABI STREQUAL "default")
203 if (APPLE OR CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
204 set(SANITIZER_CXX_ABI_LIBNAME "libc++")
205 set(SANITIZER_CXX_ABI_SYSTEM 1)
207 set(SANITIZER_CXX_ABI_LIBNAME "libc++")
208 set(SANITIZER_CXX_ABI_INTREE 1)
210 set(SANITIZER_CXX_ABI_LIBNAME "libstdc++")
211 set(SANITIZER_CXX_ABI_SYSTEM 1)
214 set(SANITIZER_CXX_ABI_LIBNAME "${SANITIZER_CXX_ABI}")
215 set(SANITIZER_CXX_ABI_SYSTEM 1)
218 set(DEFAULT_COMPILER_RT_USE_BUILTINS_LIBRARY OFF)
220 set(DEFAULT_COMPILER_RT_USE_BUILTINS_LIBRARY ON)
223 option(COMPILER_RT_USE_BUILTINS_LIBRARY
224 "Use compiler-rt builtins instead of libgcc" ${DEFAULT_COMPILER_RT_USE_BUILTINS_LIBRARY})
228 #================================
229 # Setup Compiler Flags
230 #================================
233 # Override any existing /W flags with /W4. This is what LLVM does. Failing to
234 # remove other /W[0-4] flags will result in a warning about overriding a
236 if (COMPILER_RT_HAS_W4_FLAG)
237 string(REGEX REPLACE " /W[0-4]" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
238 string(REGEX REPLACE " /W[0-4]" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
239 append_string_if(COMPILER_RT_HAS_W4_FLAG /W4 CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
242 append_string_if(COMPILER_RT_HAS_WALL_FLAG -Wall CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
244 if(COMPILER_RT_ENABLE_WERROR)
245 append_string_if(COMPILER_RT_HAS_WERROR_FLAG -Werror CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
246 append_string_if(COMPILER_RT_HAS_WX_FLAG /WX CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
249 append_string_if(COMPILER_RT_HAS_STD_CXX11_FLAG -std=c++11 CMAKE_CXX_FLAGS)
251 # Emulate C99 and C++11's __func__ for MSVC prior to 2013 CTP.
252 if(NOT COMPILER_RT_HAS_FUNC_SYMBOL)
253 add_definitions(-D__func__=__FUNCTION__)
256 # Provide some common commmandline flags for Sanitizer runtimes.
258 append_list_if(COMPILER_RT_HAS_FPIC_FLAG -fPIC SANITIZER_COMMON_CFLAGS)
260 append_list_if(COMPILER_RT_HAS_FNO_BUILTIN_FLAG -fno-builtin SANITIZER_COMMON_CFLAGS)
261 append_list_if(COMPILER_RT_HAS_FNO_EXCEPTIONS_FLAG -fno-exceptions SANITIZER_COMMON_CFLAGS)
262 if(NOT COMPILER_RT_DEBUG AND NOT APPLE)
263 append_list_if(COMPILER_RT_HAS_FOMIT_FRAME_POINTER_FLAG -fomit-frame-pointer SANITIZER_COMMON_CFLAGS)
265 append_list_if(COMPILER_RT_HAS_FUNWIND_TABLES_FLAG -funwind-tables SANITIZER_COMMON_CFLAGS)
266 append_list_if(COMPILER_RT_HAS_FNO_STACK_PROTECTOR_FLAG -fno-stack-protector SANITIZER_COMMON_CFLAGS)
267 append_list_if(COMPILER_RT_HAS_FNO_SANITIZE_SAFE_STACK_FLAG -fno-sanitize=safe-stack SANITIZER_COMMON_CFLAGS)
268 append_list_if(COMPILER_RT_HAS_FVISIBILITY_HIDDEN_FLAG -fvisibility=hidden SANITIZER_COMMON_CFLAGS)
269 if(NOT COMPILER_RT_HAS_FVISIBILITY_HIDDEN_FLAG)
270 append_list_if(COMPILER_RT_HAS_FVISIBILITY_INLINES_HIDDEN_FLAG -fvisibility-inlines-hidden SANITIZER_COMMON_CFLAGS)
272 append_list_if(COMPILER_RT_HAS_FNO_LTO_FLAG -fno-lto SANITIZER_COMMON_CFLAGS)
274 # The following is a workaround for powerpc64le. This is the only architecture
275 # that requires -fno-function-sections to work properly. If lacking, the ASan
276 # Linux test function-sections-are-bad.cc fails with the following error:
277 # 'undefined symbol: __sanitizer_unaligned_load32'.
278 if(DEFINED TARGET_powerpc64le_CFLAGS)
279 append_list_if(COMPILER_RT_HAS_FNO_FUNCTION_SECTIONS_FLAG -fno-function-sections TARGET_powerpc64le_CFLAGS)
283 # Replace the /M[DT][d] flags with /MT, and strip any definitions of _DEBUG,
284 # which cause definition mismatches at link time.
285 # FIXME: In fact, sanitizers should support both /MT and /MD, see PR20214.
286 if(COMPILER_RT_HAS_MT_FLAG)
288 CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
289 CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO
290 CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE
291 CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO)
292 string(REGEX REPLACE "/M[DT]d" "/MT" ${flag_var} "${${flag_var}}")
293 string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
294 string(REGEX REPLACE "/D_DEBUG" "" ${flag_var} "${${flag_var}}")
297 append_list_if(COMPILER_RT_HAS_Oy_FLAG /Oy- SANITIZER_COMMON_CFLAGS)
298 append_list_if(COMPILER_RT_HAS_GS_FLAG /GS- SANITIZER_COMMON_CFLAGS)
299 # VS 2015 (version 1900) added support for thread safe static initialization.
300 # However, ASan interceptors run before CRT initialization, which causes the
301 # new thread safe code to crash. Disable this feature for now.
302 if (MSVC_VERSION GREATER 1899 OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
303 list(APPEND SANITIZER_COMMON_CFLAGS /Zc:threadSafeInit-)
307 append_list_if(COMPILER_RT_DEBUG -DSANITIZER_DEBUG=1 SANITIZER_COMMON_CFLAGS)
309 # If we're using MSVC,
310 # always respect the optimization flags set by CMAKE_BUILD_TYPE instead.
313 # Build with optimization, unless we're in debug mode.
314 if(COMPILER_RT_DEBUG)
315 list(APPEND SANITIZER_COMMON_CFLAGS -O0)
317 list(APPEND SANITIZER_COMMON_CFLAGS -O3)
321 # Determine if we should restrict stack frame sizes.
322 # Stack frames on PowerPC and Mips and in debug biuld can be much larger than
324 # FIXME: Fix all sanitizers and add -Wframe-larger-than to
325 # SANITIZER_COMMON_FLAGS
326 if(COMPILER_RT_HAS_WFRAME_LARGER_THAN_FLAG AND NOT COMPILER_RT_DEBUG
327 AND NOT ${COMPILER_RT_DEFAULT_TARGET_ARCH} MATCHES "powerpc|mips")
328 set(SANITIZER_LIMIT_FRAME_SIZE TRUE)
330 set(SANITIZER_LIMIT_FRAME_SIZE FALSE)
334 set(SANITIZER_USE_SYMBOLS TRUE)
336 set(SANITIZER_USE_SYMBOLS FALSE)
339 # Build sanitizer runtimes with debug info.
341 # Use /Z7 instead of /Zi for the asan runtime. This avoids the LNK4099
342 # warning from the MS linker complaining that it can't find the 'vc140.pdb'
343 # file used by our object library compilations.
344 list(APPEND SANITIZER_COMMON_CFLAGS /Z7)
345 llvm_replace_compiler_option(CMAKE_CXX_FLAGS "/Z[i7I]" "/Z7")
346 llvm_replace_compiler_option(CMAKE_CXX_FLAGS_DEBUG "/Z[i7I]" "/Z7")
347 llvm_replace_compiler_option(CMAKE_CXX_FLAGS_RELWITHDEBINFO "/Z[i7I]" "/Z7")
348 elseif(COMPILER_RT_HAS_GLINE_TABLES_ONLY_FLAG AND NOT COMPILER_RT_DEBUG)
349 list(APPEND SANITIZER_COMMON_CFLAGS -gline-tables-only)
350 elseif(COMPILER_RT_HAS_G_FLAG)
351 list(APPEND SANITIZER_COMMON_CFLAGS -g)
354 if(LLVM_ENABLE_MODULES)
355 # Sanitizers cannot be built with -fmodules. The interceptors intentionally
356 # don't include system headers, which is incompatible with modules.
357 list(APPEND SANITIZER_COMMON_CFLAGS -fno-modules)
360 # Turn off several warnings.
361 append_list_if(COMPILER_RT_HAS_WGNU_FLAG -Wno-gnu SANITIZER_COMMON_CFLAGS)
362 append_list_if(COMPILER_RT_HAS_WVARIADIC_MACROS_FLAG -Wno-variadic-macros SANITIZER_COMMON_CFLAGS)
363 append_list_if(COMPILER_RT_HAS_WC99_EXTENSIONS_FLAG -Wno-c99-extensions SANITIZER_COMMON_CFLAGS)
364 append_list_if(COMPILER_RT_HAS_WNON_VIRTUAL_DTOR_FLAG -Wno-non-virtual-dtor SANITIZER_COMMON_CFLAGS)
365 append_list_if(COMPILER_RT_HAS_WD4146_FLAG /wd4146 SANITIZER_COMMON_CFLAGS)
366 append_list_if(COMPILER_RT_HAS_WD4291_FLAG /wd4291 SANITIZER_COMMON_CFLAGS)
367 append_list_if(COMPILER_RT_HAS_WD4391_FLAG /wd4391 SANITIZER_COMMON_CFLAGS)
368 append_list_if(COMPILER_RT_HAS_WD4722_FLAG /wd4722 SANITIZER_COMMON_CFLAGS)
369 append_list_if(COMPILER_RT_HAS_WD4800_FLAG /wd4800 SANITIZER_COMMON_CFLAGS)
371 append_list_if(MINGW -fms-extensions SANITIZER_COMMON_CFLAGS)
373 # Set common link flags.
374 append_list_if(COMPILER_RT_HAS_NODEFAULTLIBS_FLAG -nodefaultlibs SANITIZER_COMMON_LINK_FLAGS)
376 if (COMPILER_RT_USE_BUILTINS_LIBRARY)
377 list(APPEND SANITIZER_COMMON_LINK_LIBS ${COMPILER_RT_BUILTINS_LIBRARY})
378 string(REPLACE "-Wl,-z,defs" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
381 append_list_if(COMPILER_RT_HAS_GCC_LIB gcc SANITIZER_COMMON_LINK_LIBS)
383 append_list_if(COMPILER_RT_HAS_GCC_S_LIB gcc_s SANITIZER_COMMON_LINK_LIBS)
387 append_list_if(COMPILER_RT_HAS_LIBC c SANITIZER_COMMON_LINK_LIBS)
389 if("${CMAKE_SYSTEM_NAME}" STREQUAL "Fuchsia")
390 list(APPEND SANITIZER_COMMON_LINK_FLAGS -Wl,-z,defs,-z,now,-z,relro)
391 list(APPEND SANITIZER_COMMON_LINK_LIBS zircon)
394 if (SANITIZER_CXX_ABI_LIBNAME STREQUAL "libc++")
395 if (SANITIZER_CXX_ABI_INTREE)
396 if (NOT LIBCXXABI_ENABLE_STATIC_UNWINDER AND (TARGET unwind_shared OR HAVE_LIBUNWIND))
397 list(APPEND SANITIZER_CXX_ABI_LIBRARY unwind_shared)
398 elseif (LIBCXXABI_ENABLE_STATIC_UNWINDER AND (TARGET unwind_static OR HAVE_LIBUNWIND))
399 list(APPEND SANITIZER_CXX_ABI_LIBRARY unwind_static)
401 if (NOT LIBCXX_ENABLE_STATIC_ABI_LIBRARY AND (TARGET cxxabi_shared OR HAVE_LIBCXXABI))
402 list(APPEND SANITIZER_CXX_ABI_LIBRARY cxxabi_shared)
403 elseif (LIBCXX_ENABLE_STATIC_ABI_LIBRARY AND (TARGET cxxabi_static OR HAVE_LIBCXXABI))
404 list(APPEND SANITIZER_CXX_ABI_LIBRARY cxxabi_static)
407 append_list_if(COMPILER_RT_HAS_LIBCXX c++ SANITIZER_CXX_ABI_LIBRARY)
409 elseif (SANITIZER_CXX_ABI_LIBNAME STREQUAL "libcxxabi")
410 list(APPEND SANITIZER_CXX_ABI_LIBRARY "c++abi")
411 elseif (SANITIZER_CXX_ABI_LIBNAME STREQUAL "libstdc++")
412 append_list_if(COMPILER_RT_HAS_LIBSTDCXX stdc++ SANITIZER_CXX_ABI_LIBRARY)
415 # Warnings to turn off for all libraries, not just sanitizers.
416 append_string_if(COMPILER_RT_HAS_WUNUSED_PARAMETER_FLAG -Wno-unused-parameter CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
418 if (CMAKE_LINKER MATCHES "link.exe$")
419 # Silence MSVC linker warnings caused by empty object files. The
420 # sanitizer libraries intentionally use ifdefs that result in empty
421 # files, rather than skipping these files in the build system.
422 # Ideally, we would pass this flag only for the libraries that need
423 # it, but CMake doesn't seem to have a way to set linker flags for
424 # individual static libraries, so we enable the suppression flag for
425 # the whole compiler-rt project.
426 set(CMAKE_STATIC_LINKER_FLAGS "${CMAKE_STATIC_LINKER_FLAGS} /IGNORE:4221")
429 add_subdirectory(include)
431 option(COMPILER_RT_USE_LIBCXX
432 "Enable compiler-rt to use libc++ from the source tree" ON)
433 if(COMPILER_RT_USE_LIBCXX)
434 foreach(path IN ITEMS ${LLVM_MAIN_SRC_DIR}/projects/libcxx
435 ${LLVM_MAIN_SRC_DIR}/runtimes/libcxx
436 ${LLVM_MAIN_SRC_DIR}/../libcxx
437 ${LLVM_EXTERNAL_LIBCXX_SOURCE_DIR})
438 if(IS_DIRECTORY ${path})
439 set(COMPILER_RT_LIBCXX_PATH ${path})
445 set(COMPILER_RT_LLD_PATH ${LLVM_MAIN_SRC_DIR}/tools/lld)
446 if(EXISTS ${COMPILER_RT_LLD_PATH}/ AND LLVM_TOOL_LLD_BUILD)
447 set(COMPILER_RT_HAS_LLD TRUE)
449 set(COMPILER_RT_LLD_PATH ${LLVM_MAIN_SRC_DIR}/../lld)
450 if(EXISTS ${COMPILER_RT_LLD_PATH}/ AND LLVM_TOOL_LLD_BUILD)
451 set(COMPILER_RT_HAS_LLD TRUE)
453 set(COMPILER_RT_HAS_LLD FALSE)
456 pythonize_bool(COMPILER_RT_HAS_LLD)
458 add_subdirectory(lib)
460 if(COMPILER_RT_INCLUDE_TESTS)
461 add_subdirectory(unittests)
462 add_subdirectory(test)
463 if (COMPILER_RT_STANDALONE_BUILD)
464 # If we have a valid source tree, generate llvm-lit into the bin directory.
465 # The user can still choose to have the check targets *use* a different lit
466 # by specifying -DLLVM_EXTERNAL_LIT, but we generate it regardless.
467 if (EXISTS ${LLVM_MAIN_SRC_DIR}/utils/llvm-lit)
468 add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/llvm-lit ${CMAKE_CURRENT_BINARY_DIR}/llvm-lit)
469 elseif(NOT EXISTS ${LLVM_EXTERNAL_LIT})
470 message(WARNING "Could not find LLVM source directory and LLVM_EXTERNAL_LIT does not"
471 "point to a valid file. You will not be able to run tests.")