1if( WIN32 AND NOT CYGWIN ) 2 # We consider Cygwin as another Unix 3 set(PURE_WINDOWS 1) 4endif() 5 6include(CheckIncludeFile) 7include(CheckIncludeFileCXX) 8include(CheckLibraryExists) 9include(CheckSymbolExists) 10include(CheckFunctionExists) 11include(CheckCXXSourceCompiles) 12include(TestBigEndian) 13 14if( UNIX AND NOT BEOS ) 15 # Used by check_symbol_exists: 16 set(CMAKE_REQUIRED_LIBRARIES m) 17endif() 18 19# Helper macros and functions 20macro(add_cxx_include result files) 21 set(${result} "") 22 foreach (file_name ${files}) 23 set(${result} "${${result}}#include<${file_name}>\n") 24 endforeach() 25endmacro(add_cxx_include files result) 26 27function(check_type_exists type files variable) 28 add_cxx_include(includes "${files}") 29 CHECK_CXX_SOURCE_COMPILES(" 30 ${includes} ${type} typeVar; 31 int main() { 32 return 0; 33 } 34 " ${variable}) 35endfunction() 36 37# include checks 38check_include_file_cxx(cxxabi.h HAVE_CXXABI_H) 39check_include_file(dirent.h HAVE_DIRENT_H) 40check_include_file(dlfcn.h HAVE_DLFCN_H) 41check_include_file(errno.h HAVE_ERRNO_H) 42check_include_file(execinfo.h HAVE_EXECINFO_H) 43check_include_file(fcntl.h HAVE_FCNTL_H) 44check_include_file(inttypes.h HAVE_INTTYPES_H) 45check_include_file(limits.h HAVE_LIMITS_H) 46check_include_file(malloc.h HAVE_MALLOC_H) 47check_include_file(malloc/malloc.h HAVE_MALLOC_MALLOC_H) 48check_include_file(ndir.h HAVE_NDIR_H) 49if( NOT PURE_WINDOWS ) 50 check_include_file(pthread.h HAVE_PTHREAD_H) 51endif() 52check_include_file(sanitizer/msan_interface.h HAVE_SANITIZER_MSAN_INTERFACE_H) 53check_include_file(signal.h HAVE_SIGNAL_H) 54check_include_file(stdint.h HAVE_STDINT_H) 55check_include_file(sys/dir.h HAVE_SYS_DIR_H) 56check_include_file(sys/ioctl.h HAVE_SYS_IOCTL_H) 57check_include_file(sys/mman.h HAVE_SYS_MMAN_H) 58check_include_file(sys/ndir.h HAVE_SYS_NDIR_H) 59check_include_file(sys/param.h HAVE_SYS_PARAM_H) 60check_include_file(sys/resource.h HAVE_SYS_RESOURCE_H) 61check_include_file(sys/stat.h HAVE_SYS_STAT_H) 62check_include_file(sys/time.h HAVE_SYS_TIME_H) 63check_include_file(sys/uio.h HAVE_SYS_UIO_H) 64check_include_file(sys/wait.h HAVE_SYS_WAIT_H) 65check_include_file(termios.h HAVE_TERMIOS_H) 66check_include_file(unistd.h HAVE_UNISTD_H) 67check_include_file(utime.h HAVE_UTIME_H) 68check_include_file(valgrind/valgrind.h HAVE_VALGRIND_VALGRIND_H) 69check_include_file(zlib.h HAVE_ZLIB_H) 70check_include_file(fenv.h HAVE_FENV_H) 71check_symbol_exists(FE_ALL_EXCEPT "fenv.h" HAVE_DECL_FE_ALL_EXCEPT) 72check_symbol_exists(FE_INEXACT "fenv.h" HAVE_DECL_FE_INEXACT) 73 74check_include_file(mach/mach.h HAVE_MACH_MACH_H) 75check_include_file(mach-o/dyld.h HAVE_MACH_O_DYLD_H) 76 77check_include_file(curses.h HAVE_CURSES_H) 78check_include_file(ncurses.h HAVE_NCURSES_H) 79check_include_file(ncursesw.h HAVE_NCURSESW_H) 80check_include_file(ncurses/curses.h HAVE_NCURSES_CURSES_H) 81check_include_file(ncursesw/curses.h HAVE_NCURSESW_CURSES_H) 82 83# library checks 84if( NOT PURE_WINDOWS ) 85 check_library_exists(pthread pthread_create "" HAVE_LIBPTHREAD) 86 if (HAVE_LIBPTHREAD) 87 check_library_exists(pthread pthread_getspecific "" HAVE_PTHREAD_GETSPECIFIC) 88 check_library_exists(pthread pthread_rwlock_init "" HAVE_PTHREAD_RWLOCK_INIT) 89 check_library_exists(pthread pthread_mutex_lock "" HAVE_PTHREAD_MUTEX_LOCK) 90 else() 91 # this could be Android 92 check_library_exists(c pthread_create "" PTHREAD_IN_LIBC) 93 if (PTHREAD_IN_LIBC) 94 check_library_exists(c pthread_getspecific "" HAVE_PTHREAD_GETSPECIFIC) 95 check_library_exists(c pthread_rwlock_init "" HAVE_PTHREAD_RWLOCK_INIT) 96 check_library_exists(c pthread_mutex_lock "" HAVE_PTHREAD_MUTEX_LOCK) 97 endif() 98 endif() 99 check_library_exists(dl dlopen "" HAVE_LIBDL) 100 check_library_exists(rt clock_gettime "" HAVE_LIBRT) 101 if (LLVM_ENABLE_ZLIB) 102 check_library_exists(z compress2 "" HAVE_LIBZ) 103 else() 104 set(HAVE_LIBZ 0) 105 endif() 106 if(LLVM_ENABLE_CURSES) 107 check_library_exists(curses has_colors "" HAVE_CURSES) 108 if(NOT HAVE_CURSES) 109 check_library_exists(ncurses has_colors "" HAVE_NCURSES) 110 set(HAVE_CURSES ${HAVE_NCURSES}) 111 if(NOT HAVE_CURSES) 112 check_library_exists(ncursesw has_colors "" HAVE_NCURSESW) 113 set(HAVE_CURSES ${HAVE_NCURSESW}) 114 endif() 115 endif() 116 else() 117 set(HAVE_CURSES 0) 118 endif() 119endif() 120 121# function checks 122check_symbol_exists(arc4random "stdlib.h" HAVE_ARC4RANDOM) 123check_symbol_exists(backtrace "execinfo.h" HAVE_BACKTRACE) 124check_symbol_exists(getpagesize unistd.h HAVE_GETPAGESIZE) 125check_symbol_exists(getrusage sys/resource.h HAVE_GETRUSAGE) 126check_symbol_exists(setrlimit sys/resource.h HAVE_SETRLIMIT) 127check_symbol_exists(isatty unistd.h HAVE_ISATTY) 128check_symbol_exists(isinf cmath HAVE_ISINF_IN_CMATH) 129check_symbol_exists(isinf math.h HAVE_ISINF_IN_MATH_H) 130check_symbol_exists(finite ieeefp.h HAVE_FINITE_IN_IEEEFP_H) 131check_symbol_exists(isnan cmath HAVE_ISNAN_IN_CMATH) 132check_symbol_exists(isnan math.h HAVE_ISNAN_IN_MATH_H) 133check_symbol_exists(ceilf math.h HAVE_CEILF) 134check_symbol_exists(floorf math.h HAVE_FLOORF) 135check_symbol_exists(fmodf math.h HAVE_FMODF) 136check_symbol_exists(log math.h HAVE_LOG) 137check_symbol_exists(log2 math.h HAVE_LOG2) 138check_symbol_exists(log10 math.h HAVE_LOG10) 139check_symbol_exists(exp math.h HAVE_EXP) 140check_symbol_exists(exp2 math.h HAVE_EXP2) 141check_symbol_exists(exp10 math.h HAVE_EXP10) 142check_symbol_exists(futimens sys/stat.h HAVE_FUTIMENS) 143check_symbol_exists(futimes sys/time.h HAVE_FUTIMES) 144if( HAVE_SETJMP_H ) 145 check_symbol_exists(longjmp setjmp.h HAVE_LONGJMP) 146 check_symbol_exists(setjmp setjmp.h HAVE_SETJMP) 147 check_symbol_exists(siglongjmp setjmp.h HAVE_SIGLONGJMP) 148 check_symbol_exists(sigsetjmp setjmp.h HAVE_SIGSETJMP) 149endif() 150if( HAVE_SYS_UIO_H ) 151 check_symbol_exists(writev sys/uio.h HAVE_WRITEV) 152endif() 153check_symbol_exists(nearbyintf math.h HAVE_NEARBYINTF) 154check_symbol_exists(mallinfo malloc.h HAVE_MALLINFO) 155check_symbol_exists(malloc_zone_statistics malloc/malloc.h 156 HAVE_MALLOC_ZONE_STATISTICS) 157check_symbol_exists(mkdtemp "stdlib.h;unistd.h" HAVE_MKDTEMP) 158check_symbol_exists(mkstemp "stdlib.h;unistd.h" HAVE_MKSTEMP) 159check_symbol_exists(mktemp "stdlib.h;unistd.h" HAVE_MKTEMP) 160check_symbol_exists(closedir "sys/types.h;dirent.h" HAVE_CLOSEDIR) 161check_symbol_exists(opendir "sys/types.h;dirent.h" HAVE_OPENDIR) 162check_symbol_exists(readdir "sys/types.h;dirent.h" HAVE_READDIR) 163check_symbol_exists(getcwd unistd.h HAVE_GETCWD) 164check_symbol_exists(gettimeofday sys/time.h HAVE_GETTIMEOFDAY) 165check_symbol_exists(getrlimit "sys/types.h;sys/time.h;sys/resource.h" HAVE_GETRLIMIT) 166check_symbol_exists(posix_spawn spawn.h HAVE_POSIX_SPAWN) 167check_symbol_exists(pread unistd.h HAVE_PREAD) 168check_symbol_exists(sbrk unistd.h HAVE_SBRK) 169check_symbol_exists(srand48 stdlib.h HAVE_RAND48_SRAND48) 170if( HAVE_RAND48_SRAND48 ) 171 check_symbol_exists(lrand48 stdlib.h HAVE_RAND48_LRAND48) 172 if( HAVE_RAND48_LRAND48 ) 173 check_symbol_exists(drand48 stdlib.h HAVE_RAND48_DRAND48) 174 if( HAVE_RAND48_DRAND48 ) 175 set(HAVE_RAND48 1 CACHE INTERNAL "are srand48/lrand48/drand48 available?") 176 endif() 177 endif() 178endif() 179check_symbol_exists(strtoll stdlib.h HAVE_STRTOLL) 180check_symbol_exists(strtoq stdlib.h HAVE_STRTOQ) 181check_symbol_exists(strerror string.h HAVE_STRERROR) 182check_symbol_exists(strerror_r string.h HAVE_STRERROR_R) 183check_symbol_exists(strerror_s string.h HAVE_DECL_STRERROR_S) 184check_symbol_exists(setenv stdlib.h HAVE_SETENV) 185if( PURE_WINDOWS ) 186 check_symbol_exists(_chsize_s io.h HAVE__CHSIZE_S) 187 188 check_function_exists(_alloca HAVE__ALLOCA) 189 check_function_exists(__alloca HAVE___ALLOCA) 190 check_function_exists(__chkstk HAVE___CHKSTK) 191 check_function_exists(___chkstk HAVE____CHKSTK) 192 193 check_function_exists(__ashldi3 HAVE___ASHLDI3) 194 check_function_exists(__ashrdi3 HAVE___ASHRDI3) 195 check_function_exists(__divdi3 HAVE___DIVDI3) 196 check_function_exists(__fixdfdi HAVE___FIXDFDI) 197 check_function_exists(__fixsfdi HAVE___FIXSFDI) 198 check_function_exists(__floatdidf HAVE___FLOATDIDF) 199 check_function_exists(__lshrdi3 HAVE___LSHRDI3) 200 check_function_exists(__moddi3 HAVE___MODDI3) 201 check_function_exists(__udivdi3 HAVE___UDIVDI3) 202 check_function_exists(__umoddi3 HAVE___UMODDI3) 203 204 check_function_exists(__main HAVE___MAIN) 205 check_function_exists(__cmpdi2 HAVE___CMPDI2) 206endif() 207if( HAVE_DLFCN_H ) 208 if( HAVE_LIBDL ) 209 list(APPEND CMAKE_REQUIRED_LIBRARIES dl) 210 endif() 211 check_symbol_exists(dlerror dlfcn.h HAVE_DLERROR) 212 check_symbol_exists(dlopen dlfcn.h HAVE_DLOPEN) 213 if( HAVE_LIBDL ) 214 list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES dl) 215 endif() 216endif() 217 218check_symbol_exists(__GLIBC__ stdio.h LLVM_USING_GLIBC) 219if( LLVM_USING_GLIBC ) 220 add_llvm_definitions( -D_GNU_SOURCE ) 221endif() 222 223set(headers "sys/types.h") 224 225if (HAVE_INTTYPES_H) 226 set(headers ${headers} "inttypes.h") 227endif() 228 229if (HAVE_STDINT_H) 230 set(headers ${headers} "stdint.h") 231endif() 232 233check_type_exists(int64_t "${headers}" HAVE_INT64_T) 234check_type_exists(uint64_t "${headers}" HAVE_UINT64_T) 235check_type_exists(u_int64_t "${headers}" HAVE_U_INT64_T) 236 237# available programs checks 238function(llvm_find_program name) 239 string(TOUPPER ${name} NAME) 240 string(REGEX REPLACE "\\." "_" NAME ${NAME}) 241 242 find_program(LLVM_PATH_${NAME} NAMES ${ARGV}) 243 mark_as_advanced(LLVM_PATH_${NAME}) 244 if(LLVM_PATH_${NAME}) 245 set(HAVE_${NAME} 1 CACHE INTERNAL "Is ${name} available ?") 246 mark_as_advanced(HAVE_${NAME}) 247 else(LLVM_PATH_${NAME}) 248 set(HAVE_${NAME} "" CACHE INTERNAL "Is ${name} available ?") 249 endif(LLVM_PATH_${NAME}) 250endfunction() 251 252llvm_find_program(gv) 253llvm_find_program(circo) 254llvm_find_program(twopi) 255llvm_find_program(neato) 256llvm_find_program(fdp) 257llvm_find_program(dot) 258llvm_find_program(dotty) 259llvm_find_program(xdot xdot.py) 260llvm_find_program(Graphviz) 261 262if( LLVM_ENABLE_FFI ) 263 find_path(FFI_INCLUDE_PATH ffi.h PATHS ${FFI_INCLUDE_DIR}) 264 if( FFI_INCLUDE_PATH ) 265 set(FFI_HEADER ffi.h CACHE INTERNAL "") 266 set(HAVE_FFI_H 1 CACHE INTERNAL "") 267 else() 268 find_path(FFI_INCLUDE_PATH ffi/ffi.h PATHS ${FFI_INCLUDE_DIR}) 269 if( FFI_INCLUDE_PATH ) 270 set(FFI_HEADER ffi/ffi.h CACHE INTERNAL "") 271 set(HAVE_FFI_FFI_H 1 CACHE INTERNAL "") 272 endif() 273 endif() 274 275 if( NOT FFI_HEADER ) 276 message(FATAL_ERROR "libffi includes are not found.") 277 endif() 278 279 find_library(FFI_LIBRARY_PATH ffi PATHS ${FFI_LIBRARY_DIR}) 280 if( NOT FFI_LIBRARY_PATH ) 281 message(FATAL_ERROR "libffi is not found.") 282 endif() 283 284 list(APPEND CMAKE_REQUIRED_LIBRARIES ${FFI_LIBRARY_PATH}) 285 list(APPEND CMAKE_REQUIRED_INCLUDES ${FFI_INCLUDE_PATH}) 286 check_symbol_exists(ffi_call ${FFI_HEADER} HAVE_FFI_CALL) 287 list(REMOVE_ITEM CMAKE_REQUIRED_INCLUDES ${FFI_INCLUDE_PATH}) 288 list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES ${FFI_LIBRARY_PATH}) 289else() 290 unset(HAVE_FFI_FFI_H CACHE) 291 unset(HAVE_FFI_H CACHE) 292 unset(HAVE_FFI_CALL CACHE) 293endif( LLVM_ENABLE_FFI ) 294 295# Define LLVM_HAS_ATOMICS if gcc or MSVC atomic builtins are supported. 296include(CheckAtomic) 297 298if( LLVM_ENABLE_PIC ) 299 set(ENABLE_PIC 1) 300else() 301 set(ENABLE_PIC 0) 302endif() 303 304find_package(LibXml2) 305if (LIBXML2_FOUND) 306 set(CLANG_HAVE_LIBXML 1) 307endif () 308 309include(CheckCXXCompilerFlag) 310 311check_cxx_compiler_flag("-Wno-variadic-macros" SUPPORTS_NO_VARIADIC_MACROS_FLAG) 312 313set(USE_NO_MAYBE_UNINITIALIZED 0) 314set(USE_NO_UNINITIALIZED 0) 315 316# Disable gcc's potentially uninitialized use analysis as it presents lots of 317# false positives. 318if (CMAKE_COMPILER_IS_GNUCXX) 319 check_cxx_compiler_flag("-Wmaybe-uninitialized" HAS_MAYBE_UNINITIALIZED) 320 if (HAS_MAYBE_UNINITIALIZED) 321 set(USE_NO_MAYBE_UNINITIALIZED 1) 322 else() 323 # Only recent versions of gcc make the distinction between -Wuninitialized 324 # and -Wmaybe-uninitialized. If -Wmaybe-uninitialized isn't supported, just 325 # turn off all uninitialized use warnings. 326 check_cxx_compiler_flag("-Wuninitialized" HAS_UNINITIALIZED) 327 set(USE_NO_UNINITIALIZED ${HAS_UNINITIALIZED}) 328 endif() 329endif() 330 331# By default, we target the host, but this can be overridden at CMake 332# invocation time. 333include(GetHostTriple) 334get_host_triple(LLVM_INFERRED_HOST_TRIPLE) 335 336set(LLVM_HOST_TRIPLE "${LLVM_INFERRED_HOST_TRIPLE}" CACHE STRING 337 "Host on which LLVM binaries will run") 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 "aarch64") 358 set(LLVM_NATIVE_ARCH AArch64) 359elseif (LLVM_NATIVE_ARCH MATCHES "arm") 360 set(LLVM_NATIVE_ARCH ARM) 361elseif (LLVM_NATIVE_ARCH MATCHES "mips") 362 set(LLVM_NATIVE_ARCH Mips) 363elseif (LLVM_NATIVE_ARCH MATCHES "xcore") 364 set(LLVM_NATIVE_ARCH XCore) 365elseif (LLVM_NATIVE_ARCH MATCHES "msp430") 366 set(LLVM_NATIVE_ARCH MSP430) 367elseif (LLVM_NATIVE_ARCH MATCHES "hexagon") 368 set(LLVM_NATIVE_ARCH Hexagon) 369elseif (LLVM_NATIVE_ARCH MATCHES "s390x") 370 set(LLVM_NATIVE_ARCH SystemZ) 371else () 372 message(FATAL_ERROR "Unknown architecture ${LLVM_NATIVE_ARCH}") 373endif () 374 375# If build targets includes "host", then replace with native architecture. 376list(FIND LLVM_TARGETS_TO_BUILD "host" idx) 377if( NOT idx LESS 0 ) 378 list(REMOVE_AT LLVM_TARGETS_TO_BUILD ${idx}) 379 list(APPEND LLVM_TARGETS_TO_BUILD ${LLVM_NATIVE_ARCH}) 380 list(REMOVE_DUPLICATES LLVM_TARGETS_TO_BUILD) 381endif() 382 383list(FIND LLVM_TARGETS_TO_BUILD ${LLVM_NATIVE_ARCH} NATIVE_ARCH_IDX) 384if (NATIVE_ARCH_IDX EQUAL -1) 385 message(STATUS 386 "Native target ${LLVM_NATIVE_ARCH} is not selected; lli will not JIT code") 387else () 388 message(STATUS "Native target architecture is ${LLVM_NATIVE_ARCH}") 389 set(LLVM_NATIVE_TARGET LLVMInitialize${LLVM_NATIVE_ARCH}Target) 390 set(LLVM_NATIVE_TARGETINFO LLVMInitialize${LLVM_NATIVE_ARCH}TargetInfo) 391 set(LLVM_NATIVE_TARGETMC LLVMInitialize${LLVM_NATIVE_ARCH}TargetMC) 392 set(LLVM_NATIVE_ASMPRINTER LLVMInitialize${LLVM_NATIVE_ARCH}AsmPrinter) 393 394 # We don't have an ASM parser for all architectures yet. 395 if (EXISTS ${CMAKE_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/AsmParser/CMakeLists.txt) 396 set(LLVM_NATIVE_ASMPARSER LLVMInitialize${LLVM_NATIVE_ARCH}AsmParser) 397 endif () 398 399 # We don't have an disassembler for all architectures yet. 400 if (EXISTS ${CMAKE_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/Disassembler/CMakeLists.txt) 401 set(LLVM_NATIVE_DISASSEMBLER LLVMInitialize${LLVM_NATIVE_ARCH}Disassembler) 402 endif () 403endif () 404 405if( MINGW ) 406 set(HAVE_LIBIMAGEHLP 1) 407 set(HAVE_LIBPSAPI 1) 408 # TODO: Check existence of libraries. 409 # include(CheckLibraryExists) 410 # CHECK_LIBRARY_EXISTS(imagehlp ??? . HAVE_LIBIMAGEHLP) 411endif( MINGW ) 412 413if (NOT HAVE_STRTOLL) 414 # Use _strtoi64 if strtoll is not available. 415 check_symbol_exists(_strtoi64 stdlib.h have_strtoi64) 416 if (have_strtoi64) 417 set(HAVE_STRTOLL 1) 418 set(strtoll "_strtoi64") 419 set(strtoull "_strtoui64") 420 endif () 421endif () 422 423if( MSVC ) 424 set(SHLIBEXT ".lib") 425 set(stricmp "_stricmp") 426 set(strdup "_strdup") 427endif( MSVC ) 428 429if( PURE_WINDOWS ) 430 CHECK_CXX_SOURCE_COMPILES(" 431 #include <windows.h> 432 #include <imagehlp.h> 433 extern \"C\" void foo(PENUMLOADED_MODULES_CALLBACK); 434 extern \"C\" void foo(BOOL(CALLBACK*)(PCSTR,ULONG_PTR,ULONG,PVOID)); 435 int main(){return 0;}" 436 HAVE_ELMCB_PCSTR) 437 if( HAVE_ELMCB_PCSTR ) 438 set(WIN32_ELMCB_PCSTR "PCSTR") 439 else() 440 set(WIN32_ELMCB_PCSTR "PSTR") 441 endif() 442endif( PURE_WINDOWS ) 443 444# FIXME: Signal handler return type, currently hardcoded to 'void' 445set(RETSIGTYPE void) 446 447if( LLVM_ENABLE_THREADS ) 448 # Check if threading primitives aren't supported on this platform 449 if( NOT HAVE_PTHREAD_H AND NOT WIN32 ) 450 set(LLVM_ENABLE_THREADS 0) 451 endif() 452endif() 453 454if( LLVM_ENABLE_THREADS ) 455 message(STATUS "Threads enabled.") 456else( LLVM_ENABLE_THREADS ) 457 message(STATUS "Threads disabled.") 458endif() 459 460if (LLVM_ENABLE_ZLIB ) 461 # Check if zlib is available in the system. 462 if ( NOT HAVE_ZLIB_H OR NOT HAVE_LIBZ ) 463 set(LLVM_ENABLE_ZLIB 0) 464 endif() 465endif() 466 467set(LLVM_PREFIX ${CMAKE_INSTALL_PREFIX}) 468