1if( WIN32 AND NOT CYGWIN ) 2 # We consider Cygwin as another Unix 3 set(PURE_WINDOWS 1) 4endif() 5 6include(CheckIncludeFile) 7include(CheckLibraryExists) 8include(CheckSymbolExists) 9include(CheckCXXSymbolExists) 10include(CheckFunctionExists) 11include(CheckStructHasMember) 12include(CheckCCompilerFlag) 13include(CheckCSourceCompiles) 14include(CMakePushCheckState) 15 16include(CheckCompilerVersion) 17include(CheckProblematicConfigurations) 18include(HandleLLVMStdlib) 19 20if (ANDROID OR CYGWIN OR CMAKE_SYSTEM_NAME MATCHES "AIX|DragonFly|FreeBSD|Haiku|Linux|NetBSD|OpenBSD|SunOS") 21 set(HAVE_MACH_MACH_H 0) 22 set(HAVE_MALLOC_MALLOC_H 0) 23 set(HAVE_PTHREAD_H 1) 24 set(HAVE_SYS_MMAN_H 1) 25 set(HAVE_SYSEXITS_H 1) 26 set(HAVE_UNISTD_H 1) 27elseif (APPLE) 28 set(HAVE_MACH_MACH_H 1) 29 set(HAVE_MALLOC_MALLOC_H 1) 30 set(HAVE_PTHREAD_H 1) 31 set(HAVE_SYS_MMAN_H 1) 32 set(HAVE_SYSEXITS_H 1) 33 set(HAVE_UNISTD_H 1) 34elseif (PURE_WINDOWS) 35 set(HAVE_MACH_MACH_H 0) 36 set(HAVE_MALLOC_MALLOC_H 0) 37 set(HAVE_PTHREAD_H 0) 38 set(HAVE_SYS_MMAN_H 0) 39 set(HAVE_SYSEXITS_H 0) 40 set(HAVE_UNISTD_H 0) 41elseif (ZOS) 42 # Confirmed in 43 # https://github.com/llvm/llvm-project/pull/104706#issuecomment-2297109613 44 set(HAVE_MACH_MACH_H 0) 45 set(HAVE_MALLOC_MALLOC_H 0) 46 set(HAVE_PTHREAD_H 1) 47 set(HAVE_SYS_MMAN_H 1) 48 set(HAVE_SYSEXITS_H 0) 49 set(HAVE_UNISTD_H 1) 50else() 51 # Other platforms that we don't promise support for. 52 check_include_file(mach/mach.h HAVE_MACH_MACH_H) 53 check_include_file(malloc/malloc.h HAVE_MALLOC_MALLOC_H) 54 check_include_file(pthread.h HAVE_PTHREAD_H) 55 check_include_file(sys/mman.h HAVE_SYS_MMAN_H) 56 check_include_file(sysexits.h HAVE_SYSEXITS_H) 57 check_include_file(unistd.h HAVE_UNISTD_H) 58endif() 59 60if( UNIX AND NOT (APPLE OR BEOS OR HAIKU) ) 61 # Used by check_symbol_exists: 62 list(APPEND CMAKE_REQUIRED_LIBRARIES "m") 63endif() 64# x86_64 FreeBSD 9.2 requires libcxxrt to be specified explicitly. 65if( CMAKE_SYSTEM MATCHES "FreeBSD-9.2-RELEASE" AND 66 CMAKE_SIZEOF_VOID_P EQUAL 8 ) 67 list(APPEND CMAKE_REQUIRED_LIBRARIES "cxxrt") 68endif() 69 70# Do checks with _XOPEN_SOURCE and large-file API on AIX, because we will build 71# with those too. 72if (UNIX AND ${CMAKE_SYSTEM_NAME} MATCHES "AIX") 73 list(APPEND CMAKE_REQUIRED_DEFINITIONS "-D_XOPEN_SOURCE=700") 74 list(APPEND CMAKE_REQUIRED_DEFINITIONS "-D_LARGE_FILE_API") 75endif() 76 77# Do checks with _FILE_OFFSET_BITS=64 on Solaris, because we will build 78# with those too. 79if (UNIX AND ${CMAKE_SYSTEM_NAME} MATCHES "SunOS") 80 list(APPEND CMAKE_REQUIRED_DEFINITIONS "-D_FILE_OFFSET_BITS=64") 81endif() 82 83# Newer POSIX functions aren't available without the appropriate defines. 84# Usually those are set by the use of -std=gnuXX, but one can also use the 85# newer functions with -std=c(++)XX, i.e. without the GNU language extensions. 86# Keep this at the top to make sure we don't add _GNU_SOURCE dependent checks 87# before adding it. 88check_symbol_exists(__GLIBC__ stdio.h LLVM_USING_GLIBC) 89if(LLVM_USING_GLIBC) 90 add_compile_definitions(_GNU_SOURCE) 91 list(APPEND CMAKE_REQUIRED_DEFINITIONS "-D_GNU_SOURCE") 92 93 # enable 64bit off_t on 32bit systems using glibc 94 if(CMAKE_SIZEOF_VOID_P EQUAL 4) 95 add_compile_definitions(_FILE_OFFSET_BITS=64) 96 list(APPEND CMAKE_REQUIRED_DEFINITIONS "-D_FILE_OFFSET_BITS=64") 97 endif() 98endif() 99 100# include checks 101check_include_file(valgrind/valgrind.h HAVE_VALGRIND_VALGRIND_H) 102check_symbol_exists(FE_ALL_EXCEPT "fenv.h" HAVE_DECL_FE_ALL_EXCEPT) 103check_symbol_exists(FE_INEXACT "fenv.h" HAVE_DECL_FE_INEXACT) 104check_c_source_compiles(" 105 #if __has_attribute(used) 106 #define LLVM_ATTRIBUTE_USED __attribute__((__used__)) 107 #else 108 #define LLVM_ATTRIBUTE_USED 109 #endif 110 LLVM_ATTRIBUTE_USED void *foo() { 111 return __builtin_thread_pointer(); 112 } 113 int main(void) { return 0; }" 114 HAVE_BUILTIN_THREAD_POINTER) 115 116check_include_file(CrashReporterClient.h HAVE_CRASHREPORTERCLIENT_H) 117if(APPLE) 118 check_c_source_compiles(" 119 static const char *__crashreporter_info__ = 0; 120 asm(\".desc ___crashreporter_info__, 0x10\"); 121 int main(void) { return 0; }" 122 HAVE_CRASHREPORTER_INFO) 123endif() 124 125if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux") 126 check_include_file(linux/magic.h HAVE_LINUX_MAGIC_H) 127 if(NOT HAVE_LINUX_MAGIC_H) 128 # older kernels use split files 129 check_include_file(linux/nfs_fs.h HAVE_LINUX_NFS_FS_H) 130 check_include_file(linux/smb.h HAVE_LINUX_SMB_H) 131 endif() 132endif() 133 134# library checks 135if( NOT PURE_WINDOWS ) 136 check_library_exists(pthread pthread_create "" HAVE_LIBPTHREAD) 137 if (HAVE_LIBPTHREAD) 138 check_library_exists(pthread pthread_rwlock_init "" HAVE_PTHREAD_RWLOCK_INIT) 139 check_library_exists(pthread pthread_mutex_lock "" HAVE_PTHREAD_MUTEX_LOCK) 140 else() 141 # this could be Android 142 check_library_exists(c pthread_create "" PTHREAD_IN_LIBC) 143 if (PTHREAD_IN_LIBC) 144 check_library_exists(c pthread_rwlock_init "" HAVE_PTHREAD_RWLOCK_INIT) 145 check_library_exists(c pthread_mutex_lock "" HAVE_PTHREAD_MUTEX_LOCK) 146 endif() 147 endif() 148 check_library_exists(dl dlopen "" HAVE_LIBDL) 149 check_library_exists(rt shm_open "" HAVE_LIBRT) 150endif() 151 152# Check for libpfm. 153include(FindLibpfm) 154 155if(HAVE_LIBPTHREAD) 156 # We want to find pthreads library and at the moment we do want to 157 # have it reported as '-l<lib>' instead of '-pthread'. 158 # TODO: switch to -pthread once the rest of the build system can deal with it. 159 set(CMAKE_THREAD_PREFER_PTHREAD TRUE) 160 set(THREADS_HAVE_PTHREAD_ARG Off) 161 find_package(Threads REQUIRED) 162 set(LLVM_PTHREAD_LIB ${CMAKE_THREAD_LIBS_INIT}) 163endif() 164 165if(LLVM_ENABLE_ZLIB) 166 if(LLVM_ENABLE_ZLIB STREQUAL FORCE_ON) 167 find_package(ZLIB REQUIRED) 168 elseif(NOT LLVM_USE_SANITIZER MATCHES "Memory.*") 169 find_package(ZLIB) 170 endif() 171 if(ZLIB_FOUND) 172 # Check if zlib we found is usable; for example, we may have found a 32-bit 173 # library on a 64-bit system which would result in a link-time failure. 174 cmake_push_check_state() 175 list(APPEND CMAKE_REQUIRED_INCLUDES ${ZLIB_INCLUDE_DIRS}) 176 list(APPEND CMAKE_REQUIRED_LIBRARIES ${ZLIB_LIBRARY}) 177 check_symbol_exists(compress2 zlib.h HAVE_ZLIB) 178 cmake_pop_check_state() 179 if(LLVM_ENABLE_ZLIB STREQUAL FORCE_ON AND NOT HAVE_ZLIB) 180 message(FATAL_ERROR "Failed to configure zlib") 181 endif() 182 endif() 183 set(LLVM_ENABLE_ZLIB "${HAVE_ZLIB}") 184else() 185 set(LLVM_ENABLE_ZLIB 0) 186endif() 187 188set(zstd_FOUND 0) 189if(LLVM_ENABLE_ZSTD) 190 if(LLVM_ENABLE_ZSTD STREQUAL FORCE_ON) 191 find_package(zstd REQUIRED) 192 if(NOT zstd_FOUND) 193 message(FATAL_ERROR "Failed to configure zstd, but LLVM_ENABLE_ZSTD is FORCE_ON") 194 endif() 195 elseif(NOT LLVM_USE_SANITIZER MATCHES "Memory.*") 196 find_package(zstd QUIET) 197 endif() 198endif() 199set(LLVM_ENABLE_ZSTD ${zstd_FOUND}) 200 201if(LLVM_ENABLE_LIBXML2) 202 if(LLVM_ENABLE_LIBXML2 STREQUAL FORCE_ON) 203 find_package(LibXml2 REQUIRED) 204 elseif(NOT LLVM_USE_SANITIZER MATCHES "Memory.*") 205 find_package(LibXml2) 206 endif() 207 if(LibXml2_FOUND) 208 # Check if libxml2 we found is usable; for example, we may have found a 32-bit 209 # library on a 64-bit system which would result in a link-time failure. 210 cmake_push_check_state() 211 list(APPEND CMAKE_REQUIRED_INCLUDES ${LIBXML2_INCLUDE_DIRS}) 212 list(APPEND CMAKE_REQUIRED_LIBRARIES ${LIBXML2_LIBRARIES}) 213 list(APPEND CMAKE_REQUIRED_DEFINITIONS ${LIBXML2_DEFINITIONS}) 214 check_symbol_exists(xmlReadMemory libxml/xmlreader.h HAVE_LIBXML2) 215 cmake_pop_check_state() 216 if(LLVM_ENABLE_LIBXML2 STREQUAL FORCE_ON AND NOT HAVE_LIBXML2) 217 message(FATAL_ERROR "Failed to configure libxml2") 218 endif() 219 endif() 220 set(LLVM_ENABLE_LIBXML2 "${HAVE_LIBXML2}") 221endif() 222 223if(LLVM_ENABLE_CURL) 224 if(LLVM_ENABLE_CURL STREQUAL FORCE_ON) 225 find_package(CURL REQUIRED) 226 else() 227 find_package(CURL) 228 endif() 229 if(CURL_FOUND) 230 # Check if curl we found is usable; for example, we may have found a 32-bit 231 # library on a 64-bit system which would result in a link-time failure. 232 cmake_push_check_state() 233 list(APPEND CMAKE_REQUIRED_LIBRARIES CURL::libcurl) 234 check_symbol_exists(curl_easy_init curl/curl.h HAVE_CURL) 235 cmake_pop_check_state() 236 if(LLVM_ENABLE_CURL STREQUAL FORCE_ON AND NOT HAVE_CURL) 237 message(FATAL_ERROR "Failed to configure curl") 238 endif() 239 endif() 240 set(LLVM_ENABLE_CURL "${HAVE_CURL}") 241endif() 242 243if(LLVM_ENABLE_HTTPLIB) 244 if(LLVM_ENABLE_HTTPLIB STREQUAL FORCE_ON) 245 find_package(httplib REQUIRED) 246 else() 247 find_package(httplib) 248 endif() 249 if(HTTPLIB_FOUND) 250 # Check if the "httplib" we found is usable; for example there may be another 251 # library with the same name. 252 cmake_push_check_state() 253 list(APPEND CMAKE_REQUIRED_LIBRARIES ${HTTPLIB_LIBRARY}) 254 check_cxx_symbol_exists(CPPHTTPLIB_HTTPLIB_H ${HTTPLIB_HEADER_PATH} HAVE_HTTPLIB) 255 cmake_pop_check_state() 256 if(LLVM_ENABLE_HTTPLIB STREQUAL FORCE_ON AND NOT HAVE_HTTPLIB) 257 message(FATAL_ERROR "Failed to configure cpp-httplib") 258 endif() 259 endif() 260 set(LLVM_ENABLE_HTTPLIB "${HAVE_HTTPLIB}") 261endif() 262 263# Don't look for these libraries if we're using MSan, since uninstrumented third 264# party code may call MSan interceptors like strlen, leading to false positives. 265if(NOT LLVM_USE_SANITIZER MATCHES "Memory.*") 266 # Don't look for these libraries on Windows. 267 if (NOT PURE_WINDOWS) 268 # Skip libedit if using ASan as it contains memory leaks. 269 if (LLVM_ENABLE_LIBEDIT AND NOT LLVM_USE_SANITIZER MATCHES ".*Address.*") 270 if(LLVM_ENABLE_LIBEDIT STREQUAL FORCE_ON) 271 find_package(LibEdit REQUIRED) 272 else() 273 find_package(LibEdit) 274 endif() 275 set(HAVE_LIBEDIT "${LibEdit_FOUND}") 276 else() 277 set(HAVE_LIBEDIT 0) 278 endif() 279 else() 280 set(HAVE_LIBEDIT 0) 281 endif() 282else() 283 set(HAVE_LIBEDIT 0) 284endif() 285 286if(LLVM_HAS_LOGF128) 287 include(CheckCXXSymbolExists) 288 check_cxx_symbol_exists(logf128 math.h HAS_LOGF128) 289 290 if(LLVM_HAS_LOGF128 STREQUAL FORCE_ON AND NOT HAS_LOGF128) 291 message(FATAL_ERROR "Failed to configure logf128") 292 endif() 293 294 set(LLVM_HAS_LOGF128 "${HAS_LOGF128}") 295endif() 296 297# function checks 298check_symbol_exists(arc4random "stdlib.h" HAVE_DECL_ARC4RANDOM) 299find_package(Backtrace) 300set(HAVE_BACKTRACE ${Backtrace_FOUND}) 301set(BACKTRACE_HEADER ${Backtrace_HEADER}) 302 303# Prevent check_symbol_exists from using API that is not supported for a given 304# deployment target. 305check_c_compiler_flag("-Werror=unguarded-availability-new" "C_SUPPORTS_WERROR_UNGUARDED_AVAILABILITY_NEW") 306if(C_SUPPORTS_WERROR_UNGUARDED_AVAILABILITY_NEW) 307 set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -Werror=unguarded-availability-new") 308endif() 309 310# Determine whether we can register EH tables. 311check_symbol_exists(__register_frame "${CMAKE_CURRENT_LIST_DIR}/unwind.h" HAVE_REGISTER_FRAME) 312check_symbol_exists(__deregister_frame "${CMAKE_CURRENT_LIST_DIR}/unwind.h" HAVE_DEREGISTER_FRAME) 313check_symbol_exists(__unw_add_dynamic_fde "${CMAKE_CURRENT_LIST_DIR}/unwind.h" HAVE_UNW_ADD_DYNAMIC_FDE) 314 315check_symbol_exists(_Unwind_Backtrace "unwind.h" HAVE__UNWIND_BACKTRACE) 316check_symbol_exists(getpagesize unistd.h HAVE_GETPAGESIZE) 317check_symbol_exists(sysconf unistd.h HAVE_SYSCONF) 318check_symbol_exists(getrusage sys/resource.h HAVE_GETRUSAGE) 319check_symbol_exists(isatty unistd.h HAVE_ISATTY) 320check_symbol_exists(futimens sys/stat.h HAVE_FUTIMENS) 321check_symbol_exists(futimes sys/time.h HAVE_FUTIMES) 322# AddressSanitizer conflicts with lib/Support/Unix/Signals.inc 323# Avoid sigaltstack on Apple platforms, where backtrace() cannot handle it 324# (rdar://7089625) and _Unwind_Backtrace is unusable because it cannot unwind 325# past the signal handler after an assertion failure (rdar://29866587). 326if( NOT LLVM_USE_SANITIZER MATCHES ".*Address.*" AND NOT APPLE ) 327 check_symbol_exists(sigaltstack signal.h HAVE_SIGALTSTACK) 328endif() 329check_symbol_exists(mallctl malloc_np.h HAVE_MALLCTL) 330check_symbol_exists(mallinfo malloc.h HAVE_MALLINFO) 331check_symbol_exists(mallinfo2 malloc.h HAVE_MALLINFO2) 332check_symbol_exists(malloc_zone_statistics malloc/malloc.h 333 HAVE_MALLOC_ZONE_STATISTICS) 334check_symbol_exists(posix_spawn spawn.h HAVE_POSIX_SPAWN) 335check_symbol_exists(pread unistd.h HAVE_PREAD) 336check_symbol_exists(sbrk unistd.h HAVE_SBRK) 337check_symbol_exists(strerror_r string.h HAVE_STRERROR_R) 338check_symbol_exists(strerror_s string.h HAVE_DECL_STRERROR_S) 339check_symbol_exists(setenv stdlib.h HAVE_SETENV) 340if( PURE_WINDOWS ) 341 check_symbol_exists(_chsize_s io.h HAVE__CHSIZE_S) 342 343 check_function_exists(_alloca HAVE__ALLOCA) 344 check_function_exists(__alloca HAVE___ALLOCA) 345 check_function_exists(__chkstk HAVE___CHKSTK) 346 check_function_exists(__chkstk_ms HAVE___CHKSTK_MS) 347 check_function_exists(___chkstk HAVE____CHKSTK) 348 check_function_exists(___chkstk_ms HAVE____CHKSTK_MS) 349 350 check_function_exists(__ashldi3 HAVE___ASHLDI3) 351 check_function_exists(__ashrdi3 HAVE___ASHRDI3) 352 check_function_exists(__divdi3 HAVE___DIVDI3) 353 check_function_exists(__fixdfdi HAVE___FIXDFDI) 354 check_function_exists(__fixsfdi HAVE___FIXSFDI) 355 check_function_exists(__floatdidf HAVE___FLOATDIDF) 356 check_function_exists(__lshrdi3 HAVE___LSHRDI3) 357 check_function_exists(__moddi3 HAVE___MODDI3) 358 check_function_exists(__udivdi3 HAVE___UDIVDI3) 359 check_function_exists(__umoddi3 HAVE___UMODDI3) 360 361 check_function_exists(__main HAVE___MAIN) 362 check_function_exists(__cmpdi2 HAVE___CMPDI2) 363endif() 364 365CHECK_STRUCT_HAS_MEMBER("struct stat" st_mtimespec.tv_nsec 366 "sys/types.h;sys/stat.h" HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC) 367if (UNIX AND ${CMAKE_SYSTEM_NAME} MATCHES "AIX") 368# The st_mtim.tv_nsec member of a `stat` structure is not reliable on some AIX 369# environments. 370 set(HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC 0) 371else() 372 CHECK_STRUCT_HAS_MEMBER("struct stat" st_mtim.tv_nsec 373 "sys/types.h;sys/stat.h" HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC) 374endif() 375 376# This check requires _GNU_SOURCE. 377if (NOT PURE_WINDOWS) 378 if (LLVM_PTHREAD_LIB) 379 list(APPEND CMAKE_REQUIRED_LIBRARIES ${LLVM_PTHREAD_LIB}) 380 endif() 381 check_symbol_exists(pthread_getname_np pthread.h HAVE_PTHREAD_GETNAME_NP) 382 check_symbol_exists(pthread_setname_np pthread.h HAVE_PTHREAD_SETNAME_NP) 383 check_symbol_exists(pthread_get_name_np "pthread.h;pthread_np.h" HAVE_PTHREAD_GET_NAME_NP) 384 check_symbol_exists(pthread_set_name_np "pthread.h;pthread_np.h" HAVE_PTHREAD_SET_NAME_NP) 385 if (LLVM_PTHREAD_LIB) 386 list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES ${LLVM_PTHREAD_LIB}) 387 endif() 388 389 if( HAVE_LIBDL ) 390 list(APPEND CMAKE_REQUIRED_LIBRARIES dl) 391 endif() 392 check_symbol_exists(dlopen dlfcn.h HAVE_DLOPEN) 393 if( HAVE_LIBDL ) 394 list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES dl) 395 endif() 396endif() 397 398# available programs checks 399function(llvm_find_program name) 400 string(TOUPPER ${name} NAME) 401 string(REGEX REPLACE "\\." "_" NAME ${NAME}) 402 403 find_program(LLVM_PATH_${NAME} NAMES ${ARGV}) 404 mark_as_advanced(LLVM_PATH_${NAME}) 405 if(LLVM_PATH_${NAME}) 406 set(HAVE_${NAME} 1 CACHE INTERNAL "Is ${name} available ?") 407 mark_as_advanced(HAVE_${NAME}) 408 else(LLVM_PATH_${NAME}) 409 set(HAVE_${NAME} "" CACHE INTERNAL "Is ${name} available ?") 410 endif(LLVM_PATH_${NAME}) 411endfunction() 412 413if (LLVM_ENABLE_DOXYGEN) 414 llvm_find_program(dot) 415endif () 416 417if(LLVM_ENABLE_FFI) 418 set(FFI_REQUIRE_INCLUDE On) 419 if(LLVM_ENABLE_FFI STREQUAL FORCE_ON) 420 find_package(FFI REQUIRED) 421 else() 422 find_package(FFI) 423 endif() 424 set(LLVM_ENABLE_FFI "${FFI_FOUND}") 425else() 426 unset(HAVE_FFI_FFI_H CACHE) 427 unset(HAVE_FFI_H CACHE) 428 unset(HAVE_FFI_CALL CACHE) 429endif() 430 431check_symbol_exists(proc_pid_rusage "libproc.h" HAVE_PROC_PID_RUSAGE) 432 433# Define LLVM_HAS_ATOMICS if gcc or MSVC atomic builtins are supported. 434include(CheckAtomic) 435 436if( LLVM_ENABLE_PIC ) 437 set(ENABLE_PIC 1) 438else() 439 set(ENABLE_PIC 0) 440 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fno-pie") 441endif() 442 443set(SUPPORTS_VARIADIC_MACROS_FLAG 0) 444if (LLVM_COMPILER_IS_GCC_COMPATIBLE) 445 set(SUPPORTS_VARIADIC_MACROS_FLAG 1) 446endif() 447if (CMAKE_CXX_COMPILER_ID MATCHES "Clang") 448 set(SUPPORTS_GNU_ZERO_VARIADIC_MACRO_ARGUMENTS_FLAG 1) 449else() 450 set(SUPPORTS_GNU_ZERO_VARIADIC_MACRO_ARGUMENTS_FLAG 0) 451endif() 452 453set(USE_NO_MAYBE_UNINITIALIZED 0) 454set(USE_NO_UNINITIALIZED 0) 455 456# Disable gcc's potentially uninitialized use analysis as it presents lots of 457# false positives. 458if (CMAKE_COMPILER_IS_GNUCXX) 459 # Disable all -Wuninitialized warning for old GCC versions. 460 if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 12.0) 461 set(USE_NO_UNINITIALIZED 1) 462 else() 463 set(USE_NO_MAYBE_UNINITIALIZED 1) 464 endif() 465endif() 466 467if(LLVM_INCLUDE_TESTS) 468 include(GetErrcMessages) 469 get_errc_messages(LLVM_LIT_ERRC_MESSAGES) 470endif() 471 472# By default, we target the host, but this can be overridden at CMake 473# invocation time. 474include(GetHostTriple) 475get_host_triple(LLVM_INFERRED_HOST_TRIPLE) 476 477set(LLVM_HOST_TRIPLE "${LLVM_INFERRED_HOST_TRIPLE}" CACHE STRING 478 "Host on which LLVM binaries will run") 479message(STATUS "LLVM host triple: ${LLVM_HOST_TRIPLE}") 480 481# Determine the native architecture. 482string(TOLOWER "${LLVM_TARGET_ARCH}" LLVM_NATIVE_ARCH) 483if( LLVM_NATIVE_ARCH STREQUAL "host" ) 484 string(REGEX MATCH "^[^-]*" LLVM_NATIVE_ARCH ${LLVM_HOST_TRIPLE}) 485endif () 486 487if (LLVM_NATIVE_ARCH MATCHES "i[2-6]86") 488 set(LLVM_NATIVE_ARCH X86) 489elseif (LLVM_NATIVE_ARCH STREQUAL "x86") 490 set(LLVM_NATIVE_ARCH X86) 491elseif (LLVM_NATIVE_ARCH STREQUAL "amd64") 492 set(LLVM_NATIVE_ARCH X86) 493elseif (LLVM_NATIVE_ARCH STREQUAL "x86_64") 494 set(LLVM_NATIVE_ARCH X86) 495elseif (LLVM_NATIVE_ARCH MATCHES "sparc") 496 set(LLVM_NATIVE_ARCH Sparc) 497elseif (LLVM_NATIVE_ARCH MATCHES "powerpc") 498 set(LLVM_NATIVE_ARCH PowerPC) 499elseif (LLVM_NATIVE_ARCH MATCHES "ppc64le") 500 set(LLVM_NATIVE_ARCH PowerPC) 501elseif (LLVM_NATIVE_ARCH MATCHES "aarch64") 502 set(LLVM_NATIVE_ARCH AArch64) 503elseif (LLVM_NATIVE_ARCH MATCHES "arm64") 504 set(LLVM_NATIVE_ARCH AArch64) 505elseif (LLVM_NATIVE_ARCH MATCHES "arm") 506 set(LLVM_NATIVE_ARCH ARM) 507elseif (LLVM_NATIVE_ARCH MATCHES "avr") 508 set(LLVM_NATIVE_ARCH AVR) 509elseif (LLVM_NATIVE_ARCH MATCHES "mips") 510 set(LLVM_NATIVE_ARCH Mips) 511elseif (LLVM_NATIVE_ARCH MATCHES "xcore") 512 set(LLVM_NATIVE_ARCH XCore) 513elseif (LLVM_NATIVE_ARCH MATCHES "msp430") 514 set(LLVM_NATIVE_ARCH MSP430) 515elseif (LLVM_NATIVE_ARCH MATCHES "hexagon") 516 set(LLVM_NATIVE_ARCH Hexagon) 517elseif (LLVM_NATIVE_ARCH MATCHES "s390x") 518 set(LLVM_NATIVE_ARCH SystemZ) 519elseif (LLVM_NATIVE_ARCH MATCHES "wasm32") 520 set(LLVM_NATIVE_ARCH WebAssembly) 521elseif (LLVM_NATIVE_ARCH MATCHES "wasm64") 522 set(LLVM_NATIVE_ARCH WebAssembly) 523elseif (LLVM_NATIVE_ARCH MATCHES "riscv32") 524 set(LLVM_NATIVE_ARCH RISCV) 525elseif (LLVM_NATIVE_ARCH MATCHES "riscv64") 526 set(LLVM_NATIVE_ARCH RISCV) 527elseif (LLVM_NATIVE_ARCH STREQUAL "m68k") 528 set(LLVM_NATIVE_ARCH M68k) 529elseif (LLVM_NATIVE_ARCH MATCHES "loongarch") 530 set(LLVM_NATIVE_ARCH LoongArch) 531else () 532 message(FATAL_ERROR "Unknown architecture ${LLVM_NATIVE_ARCH}") 533endif () 534 535# If build targets includes "host" or "Native", then replace with native architecture. 536foreach (NATIVE_KEYWORD host Native) 537 list(FIND LLVM_TARGETS_TO_BUILD ${NATIVE_KEYWORD} idx) 538 if( NOT idx LESS 0 ) 539 list(REMOVE_AT LLVM_TARGETS_TO_BUILD ${idx}) 540 list(APPEND LLVM_TARGETS_TO_BUILD ${LLVM_NATIVE_ARCH}) 541 list(REMOVE_DUPLICATES LLVM_TARGETS_TO_BUILD) 542 endif() 543endforeach() 544 545if (NOT ${LLVM_NATIVE_ARCH} IN_LIST LLVM_TARGETS_TO_BUILD) 546 message(STATUS 547 "Native target ${LLVM_NATIVE_ARCH} is not selected; lli will not JIT code") 548else () 549 message(STATUS "Native target architecture is ${LLVM_NATIVE_ARCH}") 550 set(LLVM_NATIVE_TARGET LLVMInitialize${LLVM_NATIVE_ARCH}Target) 551 set(LLVM_NATIVE_TARGETINFO LLVMInitialize${LLVM_NATIVE_ARCH}TargetInfo) 552 set(LLVM_NATIVE_TARGETMC LLVMInitialize${LLVM_NATIVE_ARCH}TargetMC) 553 set(LLVM_NATIVE_ASMPRINTER LLVMInitialize${LLVM_NATIVE_ARCH}AsmPrinter) 554 555 # We don't have an ASM parser for all architectures yet. 556 if (EXISTS ${PROJECT_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/AsmParser/CMakeLists.txt) 557 set(LLVM_NATIVE_ASMPARSER LLVMInitialize${LLVM_NATIVE_ARCH}AsmParser) 558 endif () 559 560 # We don't have an disassembler for all architectures yet. 561 if (EXISTS ${PROJECT_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/Disassembler/CMakeLists.txt) 562 set(LLVM_NATIVE_DISASSEMBLER LLVMInitialize${LLVM_NATIVE_ARCH}Disassembler) 563 endif () 564endif () 565 566if( MSVC ) 567 set(SHLIBEXT ".lib") 568 set(stricmp "_stricmp") 569 set(strdup "_strdup") 570 571 # Allow setting clang-cl's /winsysroot flag. 572 set(LLVM_WINSYSROOT "" CACHE STRING 573 "If set, argument to clang-cl's /winsysroot") 574 575 if (LLVM_WINSYSROOT) 576 set(MSVC_DIA_SDK_DIR "${LLVM_WINSYSROOT}/DIA SDK" CACHE PATH 577 "Path to the DIA SDK") 578 else() 579 set(MSVC_DIA_SDK_DIR "$ENV{VSINSTALLDIR}DIA SDK" CACHE PATH 580 "Path to the DIA SDK") 581 endif() 582 583 # See if the DIA SDK is available and usable. 584 # Due to a bug in MSVC 2013's installation software, it is possible 585 # for MSVC 2013 to write the DIA SDK into the Visual Studio 2012 586 # install directory. If this happens, the installation is corrupt 587 # and there's nothing we can do. It happens with enough frequency 588 # though that we should handle it. We do so by simply checking that 589 # the DIA SDK folder exists. Should this happen you will need to 590 # uninstall VS 2012 and then re-install VS 2013. 591 if (IS_DIRECTORY "${MSVC_DIA_SDK_DIR}") 592 set(HAVE_DIA_SDK 1) 593 else() 594 set(HAVE_DIA_SDK 0) 595 endif() 596 597 option(LLVM_ENABLE_DIA_SDK "Use MSVC DIA SDK for debugging if available." 598 ${HAVE_DIA_SDK}) 599 600 if(LLVM_ENABLE_DIA_SDK AND NOT HAVE_DIA_SDK) 601 message(FATAL_ERROR "DIA SDK not found. If you have both VS 2012 and 2013 installed, you may need to uninstall the former and re-install the latter afterwards.") 602 endif() 603else() 604 set(LLVM_ENABLE_DIA_SDK 0) 605endif( MSVC ) 606 607if( LLVM_ENABLE_THREADS ) 608 # Check if threading primitives aren't supported on this platform 609 if( NOT HAVE_PTHREAD_H AND NOT WIN32 ) 610 set(LLVM_ENABLE_THREADS 0) 611 endif() 612endif() 613 614if( LLVM_ENABLE_THREADS ) 615 message(STATUS "Threads enabled.") 616else( LLVM_ENABLE_THREADS ) 617 message(STATUS "Threads disabled.") 618endif() 619 620if (LLVM_ENABLE_DOXYGEN) 621 message(STATUS "Doxygen enabled.") 622 find_package(Doxygen REQUIRED) 623 624 if (DOXYGEN_FOUND) 625 # If we find doxygen and we want to enable doxygen by default create a 626 # global aggregate doxygen target for generating llvm and any/all 627 # subprojects doxygen documentation. 628 if (LLVM_BUILD_DOCS) 629 add_custom_target(doxygen ALL) 630 endif() 631 632 option(LLVM_DOXYGEN_EXTERNAL_SEARCH "Enable doxygen external search." OFF) 633 if (LLVM_DOXYGEN_EXTERNAL_SEARCH) 634 set(LLVM_DOXYGEN_SEARCHENGINE_URL "" CACHE STRING "URL to use for external search.") 635 set(LLVM_DOXYGEN_SEARCH_MAPPINGS "" CACHE STRING "Doxygen Search Mappings") 636 endif() 637 endif() 638else() 639 message(STATUS "Doxygen disabled.") 640endif() 641 642find_program(GOLD_EXECUTABLE NAMES ${LLVM_DEFAULT_TARGET_TRIPLE}-ld.gold ld.gold ${LLVM_DEFAULT_TARGET_TRIPLE}-ld ld DOC "The gold linker") 643set(LLVM_BINUTILS_INCDIR "" CACHE PATH 644 "PATH to binutils/include containing plugin-api.h for gold plugin.") 645 646if(CMAKE_GENERATOR MATCHES "Ninja") 647 execute_process(COMMAND ${CMAKE_MAKE_PROGRAM} --version 648 OUTPUT_VARIABLE NINJA_VERSION 649 OUTPUT_STRIP_TRAILING_WHITESPACE) 650 set(NINJA_VERSION ${NINJA_VERSION} CACHE STRING "Ninja version number" FORCE) 651 message(STATUS "Ninja version: ${NINJA_VERSION}") 652endif() 653 654if(CMAKE_GENERATOR MATCHES "Ninja" AND 655 NOT "${NINJA_VERSION}" VERSION_LESS "1.9.0" AND 656 CMAKE_HOST_APPLE AND CMAKE_HOST_SYSTEM_VERSION VERSION_GREATER "15.6.0") 657 set(LLVM_TOUCH_STATIC_LIBRARIES ON) 658endif() 659 660if(CMAKE_HOST_APPLE AND APPLE) 661 if(NOT LD64_EXECUTABLE) 662 if(NOT CMAKE_XCRUN) 663 find_program(CMAKE_XCRUN NAMES xcrun) 664 endif() 665 666 # First, check if there's ld-classic, which is ld64 in newer SDKs. 667 if(CMAKE_XCRUN) 668 execute_process(COMMAND ${CMAKE_XCRUN} -find ld-classic 669 OUTPUT_VARIABLE LD64_EXECUTABLE 670 OUTPUT_STRIP_TRAILING_WHITESPACE) 671 else() 672 find_program(LD64_EXECUTABLE NAMES ld-classic DOC "The ld64 linker") 673 endif() 674 675 # Otherwise look for ld directly. 676 if(NOT LD64_EXECUTABLE) 677 if(CMAKE_XCRUN) 678 execute_process(COMMAND ${CMAKE_XCRUN} -find ld 679 OUTPUT_VARIABLE LD64_EXECUTABLE 680 OUTPUT_STRIP_TRAILING_WHITESPACE) 681 else() 682 find_program(LD64_EXECUTABLE NAMES ld DOC "The ld64 linker") 683 endif() 684 endif() 685 endif() 686 687 if(LD64_EXECUTABLE) 688 set(LD64_EXECUTABLE ${LD64_EXECUTABLE} CACHE PATH "ld64 executable") 689 message(STATUS "Found ld64 - ${LD64_EXECUTABLE}") 690 endif() 691endif() 692 693# Keep the version requirements in sync with bindings/ocaml/README.txt. 694set(LLVM_BINDINGS "") 695include(FindOCaml) 696include(AddOCaml) 697if(WIN32 OR NOT LLVM_ENABLE_BINDINGS) 698 message(STATUS "OCaml bindings disabled.") 699else() 700 find_package(OCaml) 701 if( NOT OCAML_FOUND ) 702 message(STATUS "OCaml bindings disabled.") 703 else() 704 if( OCAML_VERSION VERSION_LESS "4.00.0" ) 705 message(STATUS "OCaml bindings disabled, need OCaml >=4.00.0.") 706 else() 707 find_ocamlfind_package(ctypes VERSION 0.4 OPTIONAL) 708 if( HAVE_OCAML_CTYPES ) 709 message(STATUS "OCaml bindings enabled.") 710 set(LLVM_BINDINGS "${LLVM_BINDINGS} ocaml") 711 712 set(LLVM_OCAML_INSTALL_PATH "${OCAML_STDLIB_PATH}" CACHE STRING 713 "Install directory for LLVM OCaml packages") 714 else() 715 message(STATUS "OCaml bindings disabled, need ctypes >=0.4.") 716 endif() 717 endif() 718 endif() 719endif() 720 721string(REPLACE " " ";" LLVM_BINDINGS_LIST "${LLVM_BINDINGS}") 722 723function(find_python_module module) 724 string(REPLACE "." "_" module_name ${module}) 725 string(TOUPPER ${module_name} module_upper) 726 set(FOUND_VAR PY_${module_upper}_FOUND) 727 if (DEFINED ${FOUND_VAR}) 728 return() 729 endif() 730 731 execute_process(COMMAND "${Python3_EXECUTABLE}" "-c" "import ${module}" 732 RESULT_VARIABLE status 733 ERROR_QUIET) 734 735 if(status) 736 set(${FOUND_VAR} OFF CACHE BOOL "Failed to find python module '${module}'") 737 message(STATUS "Could NOT find Python module ${module}") 738 else() 739 set(${FOUND_VAR} ON CACHE BOOL "Found python module '${module}'") 740 message(STATUS "Found Python module ${module}") 741 endif() 742endfunction() 743 744set (PYTHON_MODULES 745 pygments 746 # Some systems still don't have pygments.lexers.c_cpp which was introduced in 747 # version 2.0 in 2014... 748 pygments.lexers.c_cpp 749 yaml 750 ) 751foreach(module ${PYTHON_MODULES}) 752 find_python_module(${module}) 753endforeach() 754 755if(PY_PYGMENTS_FOUND AND PY_PYGMENTS_LEXERS_C_CPP_FOUND AND PY_YAML_FOUND) 756 set (LLVM_HAVE_OPT_VIEWER_MODULES 1) 757else() 758 set (LLVM_HAVE_OPT_VIEWER_MODULES 0) 759endif() 760 761function(llvm_get_host_prefixes_and_suffixes) 762 # Not all platform files will set these variables (relying on them being 763 # implicitly empty if they're unset), so unset the variables before including 764 # the platform file, to prevent any values from the target system leaking. 765 unset(CMAKE_STATIC_LIBRARY_PREFIX) 766 unset(CMAKE_STATIC_LIBRARY_SUFFIX) 767 unset(CMAKE_SHARED_LIBRARY_PREFIX) 768 unset(CMAKE_SHARED_LIBRARY_SUFFIX) 769 unset(CMAKE_IMPORT_LIBRARY_PREFIX) 770 unset(CMAKE_IMPORT_LIBRARY_SUFFIX) 771 unset(CMAKE_EXECUTABLE_SUFFIX) 772 unset(CMAKE_LINK_LIBRARY_SUFFIX) 773 include(Platform/${CMAKE_HOST_SYSTEM_NAME} OPTIONAL RESULT_VARIABLE _includedFile) 774 if (_includedFile) 775 set(LLVM_HOST_STATIC_LIBRARY_PREFIX ${CMAKE_STATIC_LIBRARY_PREFIX} PARENT_SCOPE) 776 set(LLVM_HOST_STATIC_LIBRARY_SUFFIX ${CMAKE_STATIC_LIBRARY_SUFFIX} PARENT_SCOPE) 777 set(LLVM_HOST_SHARED_LIBRARY_PREFIX ${CMAKE_SHARED_LIBRARY_PREFIX} PARENT_SCOPE) 778 set(LLVM_HOST_SHARED_LIBRARY_SUFFIX ${CMAKE_SHARED_LIBRARY_SUFFIX} PARENT_SCOPE) 779 set(LLVM_HOST_IMPORT_LIBRARY_PREFIX ${CMAKE_IMPORT_LIBRARY_PREFIX} PARENT_SCOPE) 780 set(LLVM_HOST_IMPORT_LIBRARY_SUFFIX ${CMAKE_IMPORT_LIBRARY_SUFFIX} PARENT_SCOPE) 781 set(LLVM_HOST_EXECUTABLE_SUFFIX ${CMAKE_EXECUTABLE_SUFFIX} PARENT_SCOPE) 782 set(LLVM_HOST_LINK_LIBRARY_SUFFIX ${CMAKE_LINK_LIBRARY_SUFFIX} PARENT_SCOPE) 783 endif() 784endfunction() 785 786llvm_get_host_prefixes_and_suffixes() 787