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(CheckFunctionExists) 10include(CheckCXXSourceCompiles) 11include(TestBigEndian) 12 13if( UNIX AND NOT BEOS ) 14 # Used by check_symbol_exists: 15 set(CMAKE_REQUIRED_LIBRARIES m) 16endif() 17 18# Helper macros and functions 19macro(add_cxx_include result files) 20 set(${result} "") 21 foreach (file_name ${files}) 22 set(${result} "${${result}}#include<${file_name}>\n") 23 endforeach() 24endmacro(add_cxx_include files result) 25 26function(check_type_exists type files variable) 27 add_cxx_include(includes "${files}") 28 CHECK_CXX_SOURCE_COMPILES(" 29 ${includes} ${type} typeVar; 30 int main() { 31 return 0; 32 } 33 " ${variable}) 34endfunction() 35 36# include checks 37check_include_file(argz.h HAVE_ARGZ_H) 38check_include_file(assert.h HAVE_ASSERT_H) 39check_include_file(ctype.h HAVE_CTYPE_H) 40check_include_file(dirent.h HAVE_DIRENT_H) 41check_include_file(dl.h HAVE_DL_H) 42check_include_file(dld.h HAVE_DLD_H) 43check_include_file(dlfcn.h HAVE_DLFCN_H) 44check_include_file(errno.h HAVE_ERRNO_H) 45check_include_file(execinfo.h HAVE_EXECINFO_H) 46check_include_file(fcntl.h HAVE_FCNTL_H) 47check_include_file(inttypes.h HAVE_INTTYPES_H) 48check_include_file(limits.h HAVE_LIMITS_H) 49check_include_file(link.h HAVE_LINK_H) 50check_include_file(malloc.h HAVE_MALLOC_H) 51check_include_file(malloc/malloc.h HAVE_MALLOC_MALLOC_H) 52check_include_file(memory.h HAVE_MEMORY_H) 53check_include_file(ndir.h HAVE_NDIR_H) 54if( NOT PURE_WINDOWS ) 55 check_include_file(pthread.h HAVE_PTHREAD_H) 56endif() 57check_include_file(sanitizer/msan_interface.h HAVE_SANITIZER_MSAN_INTERFACE_H) 58check_include_file(setjmp.h HAVE_SETJMP_H) 59check_include_file(signal.h HAVE_SIGNAL_H) 60check_include_file(stdint.h HAVE_STDINT_H) 61check_include_file(stdio.h HAVE_STDIO_H) 62check_include_file(stdlib.h HAVE_STDLIB_H) 63check_include_file(string.h HAVE_STRING_H) 64check_include_file(strings.h HAVE_STRINGS_H) 65check_include_file(sys/dir.h HAVE_SYS_DIR_H) 66check_include_file(sys/dl.h HAVE_SYS_DL_H) 67check_include_file(sys/ioctl.h HAVE_SYS_IOCTL_H) 68check_include_file(sys/mman.h HAVE_SYS_MMAN_H) 69check_include_file(sys/ndir.h HAVE_SYS_NDIR_H) 70check_include_file(sys/param.h HAVE_SYS_PARAM_H) 71check_include_file(sys/resource.h HAVE_SYS_RESOURCE_H) 72check_include_file(sys/stat.h HAVE_SYS_STAT_H) 73check_include_file(sys/time.h HAVE_SYS_TIME_H) 74check_include_file(sys/types.h HAVE_SYS_TYPES_H) 75check_include_file(sys/uio.h HAVE_SYS_UIO_H) 76check_include_file(sys/wait.h HAVE_SYS_WAIT_H) 77check_include_file(termios.h HAVE_TERMIOS_H) 78check_include_file(unistd.h HAVE_UNISTD_H) 79check_include_file(utime.h HAVE_UTIME_H) 80check_include_file(valgrind/valgrind.h HAVE_VALGRIND_VALGRIND_H) 81check_include_file(windows.h HAVE_WINDOWS_H) 82check_include_file(fenv.h HAVE_FENV_H) 83check_include_file(mach/mach.h HAVE_MACH_MACH_H) 84check_include_file(mach-o/dyld.h HAVE_MACH_O_DYLD_H) 85 86# library checks 87if( NOT PURE_WINDOWS ) 88 check_library_exists(pthread pthread_create "" HAVE_LIBPTHREAD) 89 if (HAVE_LIBPTHREAD) 90 check_library_exists(pthread pthread_getspecific "" HAVE_PTHREAD_GETSPECIFIC) 91 check_library_exists(pthread pthread_rwlock_init "" HAVE_PTHREAD_RWLOCK_INIT) 92 check_library_exists(pthread pthread_mutex_lock "" HAVE_PTHREAD_MUTEX_LOCK) 93 else() 94 # this could be Android 95 check_library_exists(c pthread_create "" PTHREAD_IN_LIBC) 96 if (PTHREAD_IN_LIBC) 97 check_library_exists(c pthread_getspecific "" HAVE_PTHREAD_GETSPECIFIC) 98 check_library_exists(c pthread_rwlock_init "" HAVE_PTHREAD_RWLOCK_INIT) 99 check_library_exists(c pthread_mutex_lock "" HAVE_PTHREAD_MUTEX_LOCK) 100 endif() 101 endif() 102 check_library_exists(dl dlopen "" HAVE_LIBDL) 103 check_library_exists(rt clock_gettime "" HAVE_LIBRT) 104endif() 105 106# function checks 107check_symbol_exists(arc4random "stdlib.h" HAVE_ARC4RANDOM) 108check_symbol_exists(backtrace "execinfo.h" HAVE_BACKTRACE) 109check_symbol_exists(getpagesize unistd.h HAVE_GETPAGESIZE) 110check_symbol_exists(getrusage sys/resource.h HAVE_GETRUSAGE) 111check_symbol_exists(setrlimit sys/resource.h HAVE_SETRLIMIT) 112check_symbol_exists(isatty unistd.h HAVE_ISATTY) 113check_symbol_exists(index strings.h HAVE_INDEX) 114check_symbol_exists(isinf cmath HAVE_ISINF_IN_CMATH) 115check_symbol_exists(isinf math.h HAVE_ISINF_IN_MATH_H) 116check_symbol_exists(finite ieeefp.h HAVE_FINITE_IN_IEEEFP_H) 117check_symbol_exists(isnan cmath HAVE_ISNAN_IN_CMATH) 118check_symbol_exists(isnan math.h HAVE_ISNAN_IN_MATH_H) 119check_symbol_exists(ceilf math.h HAVE_CEILF) 120check_symbol_exists(floorf math.h HAVE_FLOORF) 121check_symbol_exists(fmodf math.h HAVE_FMODF) 122check_symbol_exists(log math.h HAVE_LOG) 123check_symbol_exists(log2 math.h HAVE_LOG2) 124check_symbol_exists(log10 math.h HAVE_LOG10) 125check_symbol_exists(exp math.h HAVE_EXP) 126check_symbol_exists(exp2 math.h HAVE_EXP2) 127check_symbol_exists(exp10 math.h HAVE_EXP10) 128if( HAVE_SETJMP_H ) 129 check_symbol_exists(longjmp setjmp.h HAVE_LONGJMP) 130 check_symbol_exists(setjmp setjmp.h HAVE_SETJMP) 131 check_symbol_exists(siglongjmp setjmp.h HAVE_SIGLONGJMP) 132 check_symbol_exists(sigsetjmp setjmp.h HAVE_SIGSETJMP) 133endif() 134if( HAVE_SYS_UIO_H ) 135 check_symbol_exists(writev sys/uio.h HAVE_WRITEV) 136endif() 137check_symbol_exists(nearbyintf math.h HAVE_NEARBYINTF) 138check_symbol_exists(mallinfo malloc.h HAVE_MALLINFO) 139check_symbol_exists(malloc_zone_statistics malloc/malloc.h 140 HAVE_MALLOC_ZONE_STATISTICS) 141check_symbol_exists(mkdtemp "stdlib.h;unistd.h" HAVE_MKDTEMP) 142check_symbol_exists(mkstemp "stdlib.h;unistd.h" HAVE_MKSTEMP) 143check_symbol_exists(mktemp "stdlib.h;unistd.h" HAVE_MKTEMP) 144check_symbol_exists(closedir "sys/types.h;dirent.h" HAVE_CLOSEDIR) 145check_symbol_exists(opendir "sys/types.h;dirent.h" HAVE_OPENDIR) 146check_symbol_exists(readdir "sys/types.h;dirent.h" HAVE_READDIR) 147check_symbol_exists(getcwd unistd.h HAVE_GETCWD) 148check_symbol_exists(gettimeofday sys/time.h HAVE_GETTIMEOFDAY) 149check_symbol_exists(getrlimit "sys/types.h;sys/time.h;sys/resource.h" HAVE_GETRLIMIT) 150check_symbol_exists(posix_spawn spawn.h HAVE_POSIX_SPAWN) 151check_symbol_exists(pread unistd.h HAVE_PREAD) 152check_symbol_exists(rindex strings.h HAVE_RINDEX) 153check_symbol_exists(strchr string.h HAVE_STRCHR) 154check_symbol_exists(strcmp string.h HAVE_STRCMP) 155check_symbol_exists(strdup string.h HAVE_STRDUP) 156check_symbol_exists(strrchr string.h HAVE_STRRCHR) 157check_symbol_exists(sbrk unistd.h HAVE_SBRK) 158check_symbol_exists(srand48 stdlib.h HAVE_RAND48_SRAND48) 159if( HAVE_RAND48_SRAND48 ) 160 check_symbol_exists(lrand48 stdlib.h HAVE_RAND48_LRAND48) 161 if( HAVE_RAND48_LRAND48 ) 162 check_symbol_exists(drand48 stdlib.h HAVE_RAND48_DRAND48) 163 if( HAVE_RAND48_DRAND48 ) 164 set(HAVE_RAND48 1 CACHE INTERNAL "are srand48/lrand48/drand48 available?") 165 endif() 166 endif() 167endif() 168check_symbol_exists(strtoll stdlib.h HAVE_STRTOLL) 169check_symbol_exists(strtoq stdlib.h HAVE_STRTOQ) 170check_symbol_exists(strerror string.h HAVE_STRERROR) 171check_symbol_exists(strerror_r string.h HAVE_STRERROR_R) 172check_symbol_exists(strerror_s string.h HAVE_DECL_STRERROR_S) 173check_symbol_exists(memcpy string.h HAVE_MEMCPY) 174check_symbol_exists(memmove string.h HAVE_MEMMOVE) 175check_symbol_exists(setenv stdlib.h HAVE_SETENV) 176if( PURE_WINDOWS ) 177 check_symbol_exists(_chsize_s io.h HAVE__CHSIZE_S) 178 179 check_function_exists(_alloca HAVE__ALLOCA) 180 check_function_exists(__alloca HAVE___ALLOCA) 181 check_function_exists(__chkstk HAVE___CHKSTK) 182 check_function_exists(___chkstk HAVE____CHKSTK) 183 184 check_function_exists(__ashldi3 HAVE___ASHLDI3) 185 check_function_exists(__ashrdi3 HAVE___ASHRDI3) 186 check_function_exists(__divdi3 HAVE___DIVDI3) 187 check_function_exists(__fixdfdi HAVE___FIXDFDI) 188 check_function_exists(__fixsfdi HAVE___FIXSFDI) 189 check_function_exists(__floatdidf HAVE___FLOATDIDF) 190 check_function_exists(__lshrdi3 HAVE___LSHRDI3) 191 check_function_exists(__moddi3 HAVE___MODDI3) 192 check_function_exists(__udivdi3 HAVE___UDIVDI3) 193 check_function_exists(__umoddi3 HAVE___UMODDI3) 194 195 check_function_exists(__main HAVE___MAIN) 196 check_function_exists(__cmpdi2 HAVE___CMPDI2) 197endif() 198if( HAVE_ARGZ_H ) 199 check_symbol_exists(argz_append argz.h HAVE_ARGZ_APPEND) 200 check_symbol_exists(argz_create_sep argz.h HAVE_ARGZ_CREATE_SEP) 201 check_symbol_exists(argz_insert argz.h HAVE_ARGZ_INSERT) 202 check_symbol_exists(argz_next argz.h HAVE_ARGZ_NEXT) 203 check_symbol_exists(argz_stringify argz.h HAVE_ARGZ_STRINGIFY) 204endif() 205if( HAVE_DLFCN_H ) 206 if( HAVE_LIBDL ) 207 list(APPEND CMAKE_REQUIRED_LIBRARIES dl) 208 endif() 209 check_symbol_exists(dlerror dlfcn.h HAVE_DLERROR) 210 check_symbol_exists(dlopen dlfcn.h HAVE_DLOPEN) 211 if( HAVE_LIBDL ) 212 list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES dl) 213 endif() 214endif() 215 216check_symbol_exists(__GLIBC__ stdio.h LLVM_USING_GLIBC) 217if( LLVM_USING_GLIBC ) 218 add_llvm_definitions( -D_GNU_SOURCE ) 219endif() 220 221set(headers "") 222if (HAVE_SYS_TYPES_H) 223 set(headers ${headers} "sys/types.h") 224endif() 225 226if (HAVE_INTTYPES_H) 227 set(headers ${headers} "inttypes.h") 228endif() 229 230if (HAVE_STDINT_H) 231 set(headers ${headers} "stdint.h") 232endif() 233 234check_type_exists(int64_t "${headers}" HAVE_INT64_T) 235check_type_exists(uint64_t "${headers}" HAVE_UINT64_T) 236check_type_exists(u_int64_t "${headers}" HAVE_U_INT64_T) 237check_type_exists(error_t errno.h HAVE_ERROR_T) 238 239# available programs checks 240function(llvm_find_program name) 241 string(TOUPPER ${name} NAME) 242 string(REGEX REPLACE "\\." "_" NAME ${NAME}) 243 find_program(LLVM_PATH_${NAME} ${name}) 244 mark_as_advanced(LLVM_PATH_${NAME}) 245 if(LLVM_PATH_${NAME}) 246 set(HAVE_${NAME} 1 CACHE INTERNAL "Is ${name} available ?") 247 mark_as_advanced(HAVE_${NAME}) 248 else(LLVM_PATH_${NAME}) 249 set(HAVE_${NAME} "" CACHE INTERNAL "Is ${name} available ?") 250 endif(LLVM_PATH_${NAME}) 251endfunction() 252 253llvm_find_program(gv) 254llvm_find_program(circo) 255llvm_find_program(twopi) 256llvm_find_program(neato) 257llvm_find_program(fdp) 258llvm_find_program(dot) 259llvm_find_program(dotty) 260llvm_find_program(xdot.py) 261llvm_find_program(Graphviz) 262 263if( LLVM_ENABLE_FFI ) 264 find_path(FFI_INCLUDE_PATH ffi.h PATHS ${FFI_INCLUDE_DIR}) 265 if( FFI_INCLUDE_PATH ) 266 set(FFI_HEADER ffi.h CACHE INTERNAL "") 267 set(HAVE_FFI_H 1 CACHE INTERNAL "") 268 else() 269 find_path(FFI_INCLUDE_PATH ffi/ffi.h PATHS ${FFI_INCLUDE_DIR}) 270 if( FFI_INCLUDE_PATH ) 271 set(FFI_HEADER ffi/ffi.h CACHE INTERNAL "") 272 set(HAVE_FFI_FFI_H 1 CACHE INTERNAL "") 273 endif() 274 endif() 275 276 if( NOT FFI_HEADER ) 277 message(FATAL_ERROR "libffi includes are not found.") 278 endif() 279 280 find_library(FFI_LIBRARY_PATH ffi PATHS ${FFI_LIBRARY_DIR}) 281 if( NOT FFI_LIBRARY_PATH ) 282 message(FATAL_ERROR "libffi is not found.") 283 endif() 284 285 list(APPEND CMAKE_REQUIRED_LIBRARIES ${FFI_LIBRARY_PATH}) 286 list(APPEND CMAKE_REQUIRED_INCLUDES ${FFI_INCLUDE_PATH}) 287 check_symbol_exists(ffi_call ${FFI_HEADER} HAVE_FFI_CALL) 288 list(REMOVE_ITEM CMAKE_REQUIRED_INCLUDES ${FFI_INCLUDE_PATH}) 289 list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES ${FFI_LIBRARY_PATH}) 290else() 291 unset(HAVE_FFI_FFI_H CACHE) 292 unset(HAVE_FFI_H CACHE) 293 unset(HAVE_FFI_CALL CACHE) 294endif( LLVM_ENABLE_FFI ) 295 296# Define LLVM_HAS_ATOMICS if gcc or MSVC atomic builtins are supported. 297include(CheckAtomic) 298 299if( LLVM_ENABLE_PIC ) 300 set(ENABLE_PIC 1) 301else() 302 set(ENABLE_PIC 0) 303endif() 304 305find_package(LibXml2) 306if (LIBXML2_FOUND) 307 set(CLANG_HAVE_LIBXML 1) 308endif () 309 310include(CheckCXXCompilerFlag) 311 312check_cxx_compiler_flag("-Wno-variadic-macros" SUPPORTS_NO_VARIADIC_MACROS_FLAG) 313 314set(USE_NO_MAYBE_UNINITIALIZED 0) 315set(USE_NO_UNINITIALIZED 0) 316 317# Disable gcc's potentially uninitialized use analysis as it presents lots of 318# false positives. 319if (CMAKE_COMPILER_IS_GNUCXX) 320 check_cxx_compiler_flag("-Wmaybe-uninitialized" HAS_MAYBE_UNINITIALIZED) 321 if (HAS_MAYBE_UNINITIALIZED) 322 set(USE_NO_MAYBE_UNINITIALIZED 1) 323 else() 324 # Only recent versions of gcc make the distinction between -Wuninitialized 325 # and -Wmaybe-uninitialized. If -Wmaybe-uninitialized isn't supported, just 326 # turn off all uninitialized use warnings. 327 check_cxx_compiler_flag("-Wuninitialized" HAS_UNINITIALIZED) 328 set(USE_NO_UNINITIALIZED ${HAS_UNINITIALIZED}) 329 endif() 330endif() 331 332include(GetHostTriple) 333get_host_triple(LLVM_HOST_TRIPLE) 334 335# By default, we target the host, but this can be overridden at CMake 336# invocation time. 337set(LLVM_HOSTTRIPLE "${LLVM_HOST_TRIPLE}") 338 339# Determine the native architecture. 340string(TOLOWER "${LLVM_TARGET_ARCH}" LLVM_NATIVE_ARCH) 341if( LLVM_NATIVE_ARCH STREQUAL "host" ) 342 string(REGEX MATCH "^[^-]*" LLVM_NATIVE_ARCH ${LLVM_HOST_TRIPLE}) 343endif () 344 345if (LLVM_NATIVE_ARCH MATCHES "i[2-6]86") 346 set(LLVM_NATIVE_ARCH X86) 347elseif (LLVM_NATIVE_ARCH STREQUAL "x86") 348 set(LLVM_NATIVE_ARCH X86) 349elseif (LLVM_NATIVE_ARCH STREQUAL "amd64") 350 set(LLVM_NATIVE_ARCH X86) 351elseif (LLVM_NATIVE_ARCH STREQUAL "x86_64") 352 set(LLVM_NATIVE_ARCH X86) 353elseif (LLVM_NATIVE_ARCH MATCHES "sparc") 354 set(LLVM_NATIVE_ARCH Sparc) 355elseif (LLVM_NATIVE_ARCH MATCHES "powerpc") 356 set(LLVM_NATIVE_ARCH PowerPC) 357elseif (LLVM_NATIVE_ARCH MATCHES "arm") 358 set(LLVM_NATIVE_ARCH ARM) 359elseif (LLVM_NATIVE_ARCH MATCHES "mips") 360 set(LLVM_NATIVE_ARCH Mips) 361elseif (LLVM_NATIVE_ARCH MATCHES "xcore") 362 set(LLVM_NATIVE_ARCH XCore) 363elseif (LLVM_NATIVE_ARCH MATCHES "msp430") 364 set(LLVM_NATIVE_ARCH MSP430) 365elseif (LLVM_NATIVE_ARCH MATCHES "hexagon") 366 set(LLVM_NATIVE_ARCH Hexagon) 367else () 368 message(FATAL_ERROR "Unknown architecture ${LLVM_NATIVE_ARCH}") 369endif () 370 371list(FIND LLVM_TARGETS_TO_BUILD ${LLVM_NATIVE_ARCH} NATIVE_ARCH_IDX) 372if (NATIVE_ARCH_IDX EQUAL -1) 373 message(STATUS 374 "Native target ${LLVM_NATIVE_ARCH} is not selected; lli will not JIT code") 375else () 376 message(STATUS "Native target architecture is ${LLVM_NATIVE_ARCH}") 377 set(LLVM_NATIVE_TARGET LLVMInitialize${LLVM_NATIVE_ARCH}Target) 378 set(LLVM_NATIVE_TARGETINFO LLVMInitialize${LLVM_NATIVE_ARCH}TargetInfo) 379 set(LLVM_NATIVE_TARGETMC LLVMInitialize${LLVM_NATIVE_ARCH}TargetMC) 380 set(LLVM_NATIVE_ASMPRINTER LLVMInitialize${LLVM_NATIVE_ARCH}AsmPrinter) 381 382 # We don't have an ASM parser for all architectures yet. 383 if (EXISTS ${CMAKE_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/AsmParser/CMakeLists.txt) 384 set(LLVM_NATIVE_ASMPARSER LLVMInitialize${LLVM_NATIVE_ARCH}AsmParser) 385 endif () 386 387 # We don't have an disassembler for all architectures yet. 388 if (EXISTS ${CMAKE_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/Disassembler/CMakeLists.txt) 389 set(LLVM_NATIVE_DISASSEMBLER LLVMInitialize${LLVM_NATIVE_ARCH}Disassembler) 390 endif () 391endif () 392 393if( MINGW ) 394 set(HAVE_LIBIMAGEHLP 1) 395 set(HAVE_LIBPSAPI 1) 396 # TODO: Check existence of libraries. 397 # include(CheckLibraryExists) 398 # CHECK_LIBRARY_EXISTS(imagehlp ??? . HAVE_LIBIMAGEHLP) 399endif( MINGW ) 400 401if( MSVC ) 402 set(error_t int) 403 set(LTDL_SHLIBPATH_VAR "PATH") 404 set(LTDL_SYSSEARCHPATH "") 405 set(LTDL_DLOPEN_DEPLIBS 1) 406 set(SHLIBEXT ".lib") 407 set(LTDL_OBJDIR "_libs") 408 set(HAVE_STRTOLL 1) 409 set(strtoll "_strtoi64") 410 set(strtoull "_strtoui64") 411 set(stricmp "_stricmp") 412 set(strdup "_strdup") 413else( MSVC ) 414 set(LTDL_SHLIBPATH_VAR "LD_LIBRARY_PATH") 415 set(LTDL_SYSSEARCHPATH "") # TODO 416 set(LTDL_DLOPEN_DEPLIBS 0) # TODO 417endif( MSVC ) 418 419if( PURE_WINDOWS ) 420 CHECK_CXX_SOURCE_COMPILES(" 421 #include <windows.h> 422 #include <imagehlp.h> 423 extern \"C\" void foo(PENUMLOADED_MODULES_CALLBACK); 424 extern \"C\" void foo(BOOL(CALLBACK*)(PCSTR,ULONG_PTR,ULONG,PVOID)); 425 int main(){return 0;}" 426 HAVE_ELMCB_PCSTR) 427 if( HAVE_ELMCB_PCSTR ) 428 set(WIN32_ELMCB_PCSTR "PCSTR") 429 else() 430 set(WIN32_ELMCB_PCSTR "PSTR") 431 endif() 432endif( PURE_WINDOWS ) 433 434# FIXME: Signal handler return type, currently hardcoded to 'void' 435set(RETSIGTYPE void) 436 437if( LLVM_ENABLE_THREADS ) 438 # Check if threading primitives aren't supported on this platform 439 if( NOT HAVE_PTHREAD_H AND NOT WIN32 ) 440 set(LLVM_ENABLE_THREADS 0) 441 endif() 442endif() 443 444if( LLVM_ENABLE_THREADS ) 445 message(STATUS "Threads enabled.") 446else( LLVM_ENABLE_THREADS ) 447 message(STATUS "Threads disabled.") 448endif() 449 450set(LLVM_PREFIX ${CMAKE_INSTALL_PREFIX}) 451