cmake/config-ix.cmake

   1 if( WIN32 AND NOT CYGWIN )
   2   # We consider Cygwin as another Unix
   3   set(PURE_WINDOWS 1)
   4 endif()
   5
   6 include(CheckIncludeFile)
   7 include(CheckIncludeFileCXX)
   8 include(CheckLibraryExists)
   9 include(CheckSymbolExists)
  10 include(CheckFunctionExists)
  11 include(CheckCCompilerFlag)
  12 include(CheckCXXSourceCompiles)
  13 include(TestBigEndian)
  14
  15 include(CheckCompilerVersion)
  16 include(HandleLLVMStdlib)
  17
  18 if( UNIX AND NOT (BEOS OR HAIKU) )
  19   # Used by check_symbol_exists:
  20   list(APPEND CMAKE_REQUIRED_LIBRARIES "m")
  21 endif()
  22 # x86_64 FreeBSD 9.2 requires libcxxrt to be specified explicitly.
  23 if( CMAKE_SYSTEM MATCHES "FreeBSD-9.2-RELEASE" AND
  24     CMAKE_SIZEOF_VOID_P EQUAL 8 )
  25   list(APPEND CMAKE_REQUIRED_LIBRARIES "cxxrt")
  26 endif()
  27
  28 # Helper macros and functions
  29 macro(add_cxx_include result files)
  30   set(${result} "")
  31   foreach (file_name ${files})
  32      set(${result} "${${result}}#include<${file_name}>\n")
  33   endforeach()
  34 endmacro(add_cxx_include files result)
  35
  36 function(check_type_exists type files variable)
  37   add_cxx_include(includes "${files}")
  38   CHECK_CXX_SOURCE_COMPILES("
  39     ${includes} ${type} typeVar;
  40     int main() {
  41         return 0;
  42     }
  43     " ${variable})
  44 endfunction()
  45
  46 # include checks
  47 check_include_file(dirent.h HAVE_DIRENT_H)
  48 check_include_file(dlfcn.h HAVE_DLFCN_H)
  49 check_include_file(errno.h HAVE_ERRNO_H)
  50 check_include_file(fcntl.h HAVE_FCNTL_H)
  51 check_include_file(inttypes.h HAVE_INTTYPES_H)
  52 check_include_file(link.h HAVE_LINK_H)
  53 check_include_file(malloc.h HAVE_MALLOC_H)
  54 check_include_file(malloc/malloc.h HAVE_MALLOC_MALLOC_H)
  55 check_include_file(ndir.h HAVE_NDIR_H)
  56 if( NOT PURE_WINDOWS )
  57   check_include_file(pthread.h HAVE_PTHREAD_H)
  58 endif()
  59 check_include_file(signal.h HAVE_SIGNAL_H)
  60 check_include_file(stdint.h HAVE_STDINT_H)
  61 check_include_file(sys/dir.h HAVE_SYS_DIR_H)
  62 check_include_file(sys/ioctl.h HAVE_SYS_IOCTL_H)
  63 check_include_file(sys/mman.h HAVE_SYS_MMAN_H)
  64 check_include_file(sys/ndir.h HAVE_SYS_NDIR_H)
  65 check_include_file(sys/param.h HAVE_SYS_PARAM_H)
  66 check_include_file(sys/resource.h HAVE_SYS_RESOURCE_H)
  67 check_include_file(sys/stat.h HAVE_SYS_STAT_H)
  68 check_include_file(sys/time.h HAVE_SYS_TIME_H)
  69 check_include_file(sys/types.h HAVE_SYS_TYPES_H)
  70 check_include_file(sys/uio.h HAVE_SYS_UIO_H)
  71 check_include_file(termios.h HAVE_TERMIOS_H)
  72 check_include_file(unistd.h HAVE_UNISTD_H)
  73 check_include_file(valgrind/valgrind.h HAVE_VALGRIND_VALGRIND_H)
  74 check_include_file(zlib.h HAVE_ZLIB_H)
  75 check_include_file(fenv.h HAVE_FENV_H)
  76 check_symbol_exists(FE_ALL_EXCEPT "fenv.h" HAVE_DECL_FE_ALL_EXCEPT)
  77 check_symbol_exists(FE_INEXACT "fenv.h" HAVE_DECL_FE_INEXACT)
  78
  79 check_include_file(mach/mach.h HAVE_MACH_MACH_H)
  80 check_include_file(histedit.h HAVE_HISTEDIT_H)
  81 check_include_file(CrashReporterClient.h HAVE_CRASHREPORTERCLIENT_H)
  82 if(APPLE)
  83   include(CheckCSourceCompiles)
  84   CHECK_C_SOURCE_COMPILES("
  85      static const char *__crashreporter_info__ = 0;
  86      asm(\".desc ___crashreporter_info__, 0x10\");
  87      int main() { return 0; }"
  88     HAVE_CRASHREPORTER_INFO)
  89 endif()
  90
  91 if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
  92   check_include_file(linux/magic.h HAVE_LINUX_MAGIC_H)
  93   if(NOT HAVE_LINUX_MAGIC_H)
  94     # older kernels use split files
  95     check_include_file(linux/nfs_fs.h HAVE_LINUX_NFS_FS_H)
  96     check_include_file(linux/smb.h HAVE_LINUX_SMB_H)
  97   endif()
  98 endif()
  99
 100 # library checks
 101 if( NOT PURE_WINDOWS )
 102   check_library_exists(pthread pthread_create "" HAVE_LIBPTHREAD)
 103   if (HAVE_LIBPTHREAD)
 104     check_library_exists(pthread pthread_getspecific "" HAVE_PTHREAD_GETSPECIFIC)
 105     check_library_exists(pthread pthread_rwlock_init "" HAVE_PTHREAD_RWLOCK_INIT)
 106     check_library_exists(pthread pthread_mutex_lock "" HAVE_PTHREAD_MUTEX_LOCK)
 107   else()
 108     # this could be Android
 109     check_library_exists(c pthread_create "" PTHREAD_IN_LIBC)
 110     if (PTHREAD_IN_LIBC)
 111       check_library_exists(c pthread_getspecific "" HAVE_PTHREAD_GETSPECIFIC)
 112       check_library_exists(c pthread_rwlock_init "" HAVE_PTHREAD_RWLOCK_INIT)
 113       check_library_exists(c pthread_mutex_lock "" HAVE_PTHREAD_MUTEX_LOCK)
 114     endif()
 115   endif()
 116   check_library_exists(dl dlopen "" HAVE_LIBDL)
 117   check_library_exists(rt clock_gettime "" HAVE_LIBRT)
 118 endif()
 119
 120 if(HAVE_LIBPTHREAD)
 121   # We want to find pthreads library and at the moment we do want to
 122   # have it reported as '-l<lib>' instead of '-pthread'.
 123   # TODO: switch to -pthread once the rest of the build system can deal with it.
 124   set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
 125   set(THREADS_HAVE_PTHREAD_ARG Off)
 126   find_package(Threads REQUIRED)
 127   set(LLVM_PTHREAD_LIB ${CMAKE_THREAD_LIBS_INIT})
 128 endif()
 129
 130 # Don't look for these libraries if we're using MSan, since uninstrumented third
 131 # party code may call MSan interceptors like strlen, leading to false positives.
 132 if(NOT LLVM_USE_SANITIZER MATCHES "Memory.*")
 133   set(HAVE_LIBZ 0)
 134   if(LLVM_ENABLE_ZLIB)
 135     foreach(library z zlib_static zlib)
 136       string(TOUPPER ${library} library_suffix)
 137       check_library_exists(${library} compress2 "" HAVE_LIBZ_${library_suffix})
 138       if(HAVE_LIBZ_${library_suffix})
 139         set(HAVE_LIBZ 1)
 140         set(ZLIB_LIBRARIES "${library}")
 141         break()
 142       endif()
 143     endforeach()
 144   endif()
 145
 146   # Don't look for these libraries on Windows.
 147   if (NOT PURE_WINDOWS)
 148     # Skip libedit if using ASan as it contains memory leaks.
 149     if (LLVM_ENABLE_LIBEDIT AND HAVE_HISTEDIT_H AND NOT LLVM_USE_SANITIZER MATCHES ".*Address.*")
 150       check_library_exists(edit el_init "" HAVE_LIBEDIT)
 151     else()
 152       set(HAVE_LIBEDIT 0)
 153     endif()
 154     if(LLVM_ENABLE_TERMINFO)
 155       set(HAVE_TERMINFO 0)
 156       foreach(library tinfo terminfo curses ncurses ncursesw)
 157         string(TOUPPER ${library} library_suffix)
 158         check_library_exists(${library} setupterm "" HAVE_TERMINFO_${library_suffix})
 159         if(HAVE_TERMINFO_${library_suffix})
 160           set(HAVE_TERMINFO 1)
 161           set(TERMINFO_LIBS "${library}")
 162           break()
 163         endif()
 164       endforeach()
 165     else()
 166       set(HAVE_TERMINFO 0)
 167     endif()
 168
 169     find_library(ICONV_LIBRARY_PATH NAMES iconv libiconv libiconv-2 c)
 170     set(LLVM_LIBXML2_ENABLED 0)
 171     set(LIBXML2_FOUND 0)
 172     if((LLVM_ENABLE_LIBXML2) AND ((CMAKE_SYSTEM_NAME MATCHES "Linux") AND (ICONV_LIBRARY_PATH) OR APPLE))
 173       find_package(LibXml2)
 174       if (LIBXML2_FOUND)
 175         set(LLVM_LIBXML2_ENABLED 1)
 176         include_directories(${LIBXML2_INCLUDE_DIR})
 177         set(LIBXML2_LIBS "xml2")
 178       endif()
 179     endif()
 180   endif()
 181 endif()
 182
 183 if (LLVM_ENABLE_LIBXML2 STREQUAL "FORCE_ON" AND NOT LLVM_LIBXML2_ENABLED)
 184   message(FATAL_ERROR "Failed to congifure libxml2")
 185 endif()
 186
 187 check_library_exists(xar xar_open "" HAVE_LIBXAR)
 188 if(HAVE_LIBXAR)
 189   set(XAR_LIB xar)
 190 endif()
 191
 192 # function checks
 193 check_symbol_exists(arc4random "stdlib.h" HAVE_DECL_ARC4RANDOM)
 194 find_package(Backtrace)
 195 set(HAVE_BACKTRACE ${Backtrace_FOUND})
 196 set(BACKTRACE_HEADER ${Backtrace_HEADER})
 197
 198 # Prevent check_symbol_exists from using API that is not supported for a given
 199 # deployment target.
 200 check_c_compiler_flag("-Werror=unguarded-availability-new" "C_SUPPORTS_WERROR_UNGUARDED_AVAILABILITY_NEW")
 201 if(C_SUPPORTS_WERROR_UNGUARDED_AVAILABILITY_NEW)
 202   set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -Werror=unguarded-availability-new")
 203 endif()
 204
 205 check_symbol_exists(_Unwind_Backtrace "unwind.h" HAVE__UNWIND_BACKTRACE)
 206 check_symbol_exists(getpagesize unistd.h HAVE_GETPAGESIZE)
 207 check_symbol_exists(sysconf unistd.h HAVE_SYSCONF)
 208 check_symbol_exists(getrusage sys/resource.h HAVE_GETRUSAGE)
 209 check_symbol_exists(setrlimit sys/resource.h HAVE_SETRLIMIT)
 210 check_symbol_exists(isatty unistd.h HAVE_ISATTY)
 211 check_symbol_exists(futimens sys/stat.h HAVE_FUTIMENS)
 212 check_symbol_exists(futimes sys/time.h HAVE_FUTIMES)
 213 check_symbol_exists(posix_fallocate fcntl.h HAVE_POSIX_FALLOCATE)
 214 # AddressSanitizer conflicts with lib/Support/Unix/Signals.inc
 215 # Avoid sigaltstack on Apple platforms, where backtrace() cannot handle it
 216 # (rdar://7089625) and _Unwind_Backtrace is unusable because it cannot unwind
 217 # past the signal handler after an assertion failure (rdar://29866587).
 218 if( HAVE_SIGNAL_H AND NOT LLVM_USE_SANITIZER MATCHES ".*Address.*" AND NOT APPLE )
 219   check_symbol_exists(sigaltstack signal.h HAVE_SIGALTSTACK)
 220 endif()
 221 if( HAVE_SYS_UIO_H )
 222   check_symbol_exists(writev sys/uio.h HAVE_WRITEV)
 223 endif()
 224 set(CMAKE_REQUIRED_DEFINITIONS "-D_LARGEFILE64_SOURCE")
 225 check_symbol_exists(lseek64 "sys/types.h;unistd.h" HAVE_LSEEK64)
 226 set(CMAKE_REQUIRED_DEFINITIONS "")
 227 check_symbol_exists(mallctl malloc_np.h HAVE_MALLCTL)
 228 check_symbol_exists(mallinfo malloc.h HAVE_MALLINFO)
 229 check_symbol_exists(malloc_zone_statistics malloc/malloc.h
 230                     HAVE_MALLOC_ZONE_STATISTICS)
 231 check_symbol_exists(mkdtemp "stdlib.h;unistd.h" HAVE_MKDTEMP)
 232 check_symbol_exists(mkstemp "stdlib.h;unistd.h" HAVE_MKSTEMP)
 233 check_symbol_exists(mktemp "stdlib.h;unistd.h" HAVE_MKTEMP)
 234 check_symbol_exists(getcwd unistd.h HAVE_GETCWD)
 235 check_symbol_exists(gettimeofday sys/time.h HAVE_GETTIMEOFDAY)
 236 check_symbol_exists(getrlimit "sys/types.h;sys/time.h;sys/resource.h" HAVE_GETRLIMIT)
 237 check_symbol_exists(posix_spawn spawn.h HAVE_POSIX_SPAWN)
 238 check_symbol_exists(pread unistd.h HAVE_PREAD)
 239 check_symbol_exists(realpath stdlib.h HAVE_REALPATH)
 240 check_symbol_exists(sbrk unistd.h HAVE_SBRK)
 241 check_symbol_exists(strtoll stdlib.h HAVE_STRTOLL)
 242 check_symbol_exists(strerror string.h HAVE_STRERROR)
 243 check_symbol_exists(strerror_r string.h HAVE_STRERROR_R)
 244 check_symbol_exists(strerror_s string.h HAVE_DECL_STRERROR_S)
 245 check_symbol_exists(setenv stdlib.h HAVE_SETENV)
 246 if( PURE_WINDOWS )
 247   check_symbol_exists(_chsize_s io.h HAVE__CHSIZE_S)
 248
 249   check_function_exists(_alloca HAVE__ALLOCA)
 250   check_function_exists(__alloca HAVE___ALLOCA)
 251   check_function_exists(__chkstk HAVE___CHKSTK)
 252   check_function_exists(__chkstk_ms HAVE___CHKSTK_MS)
 253   check_function_exists(___chkstk HAVE____CHKSTK)
 254   check_function_exists(___chkstk_ms HAVE____CHKSTK_MS)
 255
 256   check_function_exists(__ashldi3 HAVE___ASHLDI3)
 257   check_function_exists(__ashrdi3 HAVE___ASHRDI3)
 258   check_function_exists(__divdi3 HAVE___DIVDI3)
 259   check_function_exists(__fixdfdi HAVE___FIXDFDI)
 260   check_function_exists(__fixsfdi HAVE___FIXSFDI)
 261   check_function_exists(__floatdidf HAVE___FLOATDIDF)
 262   check_function_exists(__lshrdi3 HAVE___LSHRDI3)
 263   check_function_exists(__moddi3 HAVE___MODDI3)
 264   check_function_exists(__udivdi3 HAVE___UDIVDI3)
 265   check_function_exists(__umoddi3 HAVE___UMODDI3)
 266
 267   check_function_exists(__main HAVE___MAIN)
 268   check_function_exists(__cmpdi2 HAVE___CMPDI2)
 269 endif()
 270 if( HAVE_DLFCN_H )
 271   if( HAVE_LIBDL )
 272     list(APPEND CMAKE_REQUIRED_LIBRARIES dl)
 273   endif()
 274   check_symbol_exists(dlopen dlfcn.h HAVE_DLOPEN)
 275   check_symbol_exists(dladdr dlfcn.h HAVE_DLADDR)
 276   if( HAVE_LIBDL )
 277     list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES dl)
 278   endif()
 279 endif()
 280
 281 check_symbol_exists(__GLIBC__ stdio.h LLVM_USING_GLIBC)
 282 if( LLVM_USING_GLIBC )
 283   add_definitions( -D_GNU_SOURCE )
 284   list(APPEND CMAKE_REQUIRED_DEFINITIONS "-D_GNU_SOURCE")
 285 endif()
 286 # This check requires _GNU_SOURCE
 287 check_symbol_exists(sched_getaffinity sched.h HAVE_SCHED_GETAFFINITY)
 288 check_symbol_exists(CPU_COUNT sched.h HAVE_CPU_COUNT)
 289 if(HAVE_LIBPTHREAD)
 290   check_library_exists(pthread pthread_getname_np "" HAVE_PTHREAD_GETNAME_NP)
 291   check_library_exists(pthread pthread_setname_np "" HAVE_PTHREAD_SETNAME_NP)
 292 elseif(PTHREAD_IN_LIBC)
 293   check_library_exists(c pthread_getname_np "" HAVE_PTHREAD_GETNAME_NP)
 294   check_library_exists(c pthread_setname_np "" HAVE_PTHREAD_SETNAME_NP)
 295 endif()
 296
 297 set(headers "sys/types.h")
 298
 299 if (HAVE_INTTYPES_H)
 300   set(headers ${headers} "inttypes.h")
 301 endif()
 302
 303 if (HAVE_STDINT_H)
 304   set(headers ${headers} "stdint.h")
 305 endif()
 306
 307 check_type_exists(int64_t "${headers}" HAVE_INT64_T)
 308 check_type_exists(uint64_t "${headers}" HAVE_UINT64_T)
 309 check_type_exists(u_int64_t "${headers}" HAVE_U_INT64_T)
 310
 311 # available programs checks
 312 function(llvm_find_program name)
 313   string(TOUPPER ${name} NAME)
 314   string(REGEX REPLACE "\\." "_" NAME ${NAME})
 315
 316   find_program(LLVM_PATH_${NAME} NAMES ${ARGV})
 317   mark_as_advanced(LLVM_PATH_${NAME})
 318   if(LLVM_PATH_${NAME})
 319     set(HAVE_${NAME} 1 CACHE INTERNAL "Is ${name} available ?")
 320     mark_as_advanced(HAVE_${NAME})
 321   else(LLVM_PATH_${NAME})
 322     set(HAVE_${NAME} "" CACHE INTERNAL "Is ${name} available ?")
 323   endif(LLVM_PATH_${NAME})
 324 endfunction()
 325
 326 if (LLVM_ENABLE_DOXYGEN)
 327   llvm_find_program(dot)
 328 endif ()
 329
 330 if( LLVM_ENABLE_FFI )
 331   find_path(FFI_INCLUDE_PATH ffi.h PATHS ${FFI_INCLUDE_DIR})
 332   if( EXISTS "${FFI_INCLUDE_PATH}/ffi.h" )
 333     set(FFI_HEADER ffi.h CACHE INTERNAL "")
 334     set(HAVE_FFI_H 1 CACHE INTERNAL "")
 335   else()
 336     find_path(FFI_INCLUDE_PATH ffi/ffi.h PATHS ${FFI_INCLUDE_DIR})
 337     if( EXISTS "${FFI_INCLUDE_PATH}/ffi/ffi.h" )
 338       set(FFI_HEADER ffi/ffi.h CACHE INTERNAL "")
 339       set(HAVE_FFI_FFI_H 1 CACHE INTERNAL "")
 340     endif()
 341   endif()
 342
 343   if( NOT FFI_HEADER )
 344     message(FATAL_ERROR "libffi includes are not found.")
 345   endif()
 346
 347   find_library(FFI_LIBRARY_PATH ffi PATHS ${FFI_LIBRARY_DIR})
 348   if( NOT FFI_LIBRARY_PATH )
 349     message(FATAL_ERROR "libffi is not found.")
 350   endif()
 351
 352   list(APPEND CMAKE_REQUIRED_LIBRARIES ${FFI_LIBRARY_PATH})
 353   list(APPEND CMAKE_REQUIRED_INCLUDES ${FFI_INCLUDE_PATH})
 354   check_symbol_exists(ffi_call ${FFI_HEADER} HAVE_FFI_CALL)
 355   list(REMOVE_ITEM CMAKE_REQUIRED_INCLUDES ${FFI_INCLUDE_PATH})
 356   list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES ${FFI_LIBRARY_PATH})
 357 else()
 358   unset(HAVE_FFI_FFI_H CACHE)
 359   unset(HAVE_FFI_H CACHE)
 360   unset(HAVE_FFI_CALL CACHE)
 361 endif( LLVM_ENABLE_FFI )
 362
 363 # Define LLVM_HAS_ATOMICS if gcc or MSVC atomic builtins are supported.
 364 include(CheckAtomic)
 365
 366 if( LLVM_ENABLE_PIC )
 367   set(ENABLE_PIC 1)
 368 else()
 369   set(ENABLE_PIC 0)
 370   check_cxx_compiler_flag("-fno-pie" SUPPORTS_NO_PIE_FLAG)
 371   if(SUPPORTS_NO_PIE_FLAG)
 372     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fno-pie")
 373   endif()
 374 endif()
 375
 376 check_cxx_compiler_flag("-Wvariadic-macros" SUPPORTS_VARIADIC_MACROS_FLAG)
 377 check_cxx_compiler_flag("-Wgnu-zero-variadic-macro-arguments"
 378                         SUPPORTS_GNU_ZERO_VARIADIC_MACRO_ARGUMENTS_FLAG)
 379
 380 set(USE_NO_MAYBE_UNINITIALIZED 0)
 381 set(USE_NO_UNINITIALIZED 0)
 382
 383 # Disable gcc's potentially uninitialized use analysis as it presents lots of
 384 # false positives.
 385 if (CMAKE_COMPILER_IS_GNUCXX)
 386   check_cxx_compiler_flag("-Wmaybe-uninitialized" HAS_MAYBE_UNINITIALIZED)
 387   if (HAS_MAYBE_UNINITIALIZED)
 388     set(USE_NO_MAYBE_UNINITIALIZED 1)
 389   else()
 390     # Only recent versions of gcc make the distinction between -Wuninitialized
 391     # and -Wmaybe-uninitialized. If -Wmaybe-uninitialized isn't supported, just
 392     # turn off all uninitialized use warnings.
 393     check_cxx_compiler_flag("-Wuninitialized" HAS_UNINITIALIZED)
 394     set(USE_NO_UNINITIALIZED ${HAS_UNINITIALIZED})
 395   endif()
 396 endif()
 397
 398 # By default, we target the host, but this can be overridden at CMake
 399 # invocation time.
 400 include(GetHostTriple)
 401 get_host_triple(LLVM_INFERRED_HOST_TRIPLE)
 402
 403 set(LLVM_HOST_TRIPLE "${LLVM_INFERRED_HOST_TRIPLE}" CACHE STRING
 404     "Host on which LLVM binaries will run")
 405
 406 # Determine the native architecture.
 407 string(TOLOWER "${LLVM_TARGET_ARCH}" LLVM_NATIVE_ARCH)
 408 if( LLVM_NATIVE_ARCH STREQUAL "host" )
 409   string(REGEX MATCH "^[^-]*" LLVM_NATIVE_ARCH ${LLVM_HOST_TRIPLE})
 410 endif ()
 411
 412 if (LLVM_NATIVE_ARCH MATCHES "i[2-6]86")
 413   set(LLVM_NATIVE_ARCH X86)
 414 elseif (LLVM_NATIVE_ARCH STREQUAL "x86")
 415   set(LLVM_NATIVE_ARCH X86)
 416 elseif (LLVM_NATIVE_ARCH STREQUAL "amd64")
 417   set(LLVM_NATIVE_ARCH X86)
 418 elseif (LLVM_NATIVE_ARCH STREQUAL "x86_64")
 419   set(LLVM_NATIVE_ARCH X86)
 420 elseif (LLVM_NATIVE_ARCH MATCHES "sparc")
 421   set(LLVM_NATIVE_ARCH Sparc)
 422 elseif (LLVM_NATIVE_ARCH MATCHES "powerpc")
 423   set(LLVM_NATIVE_ARCH PowerPC)
 424 elseif (LLVM_NATIVE_ARCH MATCHES "aarch64")
 425   set(LLVM_NATIVE_ARCH AArch64)
 426 elseif (LLVM_NATIVE_ARCH MATCHES "arm64")
 427   set(LLVM_NATIVE_ARCH AArch64)
 428 elseif (LLVM_NATIVE_ARCH MATCHES "arm")
 429   set(LLVM_NATIVE_ARCH ARM)
 430 elseif (LLVM_NATIVE_ARCH MATCHES "mips")
 431   set(LLVM_NATIVE_ARCH Mips)
 432 elseif (LLVM_NATIVE_ARCH MATCHES "xcore")
 433   set(LLVM_NATIVE_ARCH XCore)
 434 elseif (LLVM_NATIVE_ARCH MATCHES "msp430")
 435   set(LLVM_NATIVE_ARCH MSP430)
 436 elseif (LLVM_NATIVE_ARCH MATCHES "hexagon")
 437   set(LLVM_NATIVE_ARCH Hexagon)
 438 elseif (LLVM_NATIVE_ARCH MATCHES "s390x")
 439   set(LLVM_NATIVE_ARCH SystemZ)
 440 elseif (LLVM_NATIVE_ARCH MATCHES "wasm32")
 441   set(LLVM_NATIVE_ARCH WebAssembly)
 442 elseif (LLVM_NATIVE_ARCH MATCHES "wasm64")
 443   set(LLVM_NATIVE_ARCH WebAssembly)
 444 else ()
 445   message(FATAL_ERROR "Unknown architecture ${LLVM_NATIVE_ARCH}")
 446 endif ()
 447
 448 # If build targets includes "host", then replace with native architecture.
 449 list(FIND LLVM_TARGETS_TO_BUILD "host" idx)
 450 if( NOT idx LESS 0 )
 451   list(REMOVE_AT LLVM_TARGETS_TO_BUILD ${idx})
 452   list(APPEND LLVM_TARGETS_TO_BUILD ${LLVM_NATIVE_ARCH})
 453   list(REMOVE_DUPLICATES LLVM_TARGETS_TO_BUILD)
 454 endif()
 455
 456 list(FIND LLVM_TARGETS_TO_BUILD ${LLVM_NATIVE_ARCH} NATIVE_ARCH_IDX)
 457 if (NATIVE_ARCH_IDX EQUAL -1)
 458   message(STATUS
 459     "Native target ${LLVM_NATIVE_ARCH} is not selected; lli will not JIT code")
 460 else ()
 461   message(STATUS "Native target architecture is ${LLVM_NATIVE_ARCH}")
 462   set(LLVM_NATIVE_TARGET LLVMInitialize${LLVM_NATIVE_ARCH}Target)
 463   set(LLVM_NATIVE_TARGETINFO LLVMInitialize${LLVM_NATIVE_ARCH}TargetInfo)
 464   set(LLVM_NATIVE_TARGETMC LLVMInitialize${LLVM_NATIVE_ARCH}TargetMC)
 465   set(LLVM_NATIVE_ASMPRINTER LLVMInitialize${LLVM_NATIVE_ARCH}AsmPrinter)
 466
 467   # We don't have an ASM parser for all architectures yet.
 468   if (EXISTS ${PROJECT_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/AsmParser/CMakeLists.txt)
 469     set(LLVM_NATIVE_ASMPARSER LLVMInitialize${LLVM_NATIVE_ARCH}AsmParser)
 470   endif ()
 471
 472   # We don't have an disassembler for all architectures yet.
 473   if (EXISTS ${PROJECT_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/Disassembler/CMakeLists.txt)
 474     set(LLVM_NATIVE_DISASSEMBLER LLVMInitialize${LLVM_NATIVE_ARCH}Disassembler)
 475   endif ()
 476 endif ()
 477
 478 if( MINGW )
 479   set(HAVE_LIBPSAPI 1)
 480   set(HAVE_LIBSHELL32 1)
 481   # TODO: Check existence of libraries.
 482   #   include(CheckLibraryExists)
 483 endif( MINGW )
 484
 485 if (NOT HAVE_STRTOLL)
 486   # Use _strtoi64 if strtoll is not available.
 487   check_symbol_exists(_strtoi64 stdlib.h have_strtoi64)
 488   if (have_strtoi64)
 489     set(HAVE_STRTOLL 1)
 490     set(strtoll "_strtoi64")
 491     set(strtoull "_strtoui64")
 492   endif ()
 493 endif ()
 494
 495 if( MSVC )
 496   set(SHLIBEXT ".lib")
 497   set(stricmp "_stricmp")
 498   set(strdup "_strdup")
 499
 500   # See if the DIA SDK is available and usable.
 501   set(MSVC_DIA_SDK_DIR "$ENV{VSINSTALLDIR}DIA SDK")
 502
 503   # Due to a bug in MSVC 2013's installation software, it is possible
 504   # for MSVC 2013 to write the DIA SDK into the Visual Studio 2012
 505   # install directory.  If this happens, the installation is corrupt
 506   # and there's nothing we can do.  It happens with enough frequency
 507   # though that we should handle it.  We do so by simply checking that
 508   # the DIA SDK folder exists.  Should this happen you will need to
 509   # uninstall VS 2012 and then re-install VS 2013.
 510   if (IS_DIRECTORY ${MSVC_DIA_SDK_DIR})
 511     set(HAVE_DIA_SDK 1)
 512   else()
 513     set(HAVE_DIA_SDK 0)
 514   endif()
 515
 516   option(LLVM_ENABLE_DIA_SDK "Use MSVC DIA SDK for debugging if available."
 517                              ${HAVE_DIA_SDK})
 518
 519   if(LLVM_ENABLE_DIA_SDK AND NOT HAVE_DIA_SDK)
 520     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.")
 521   endif()
 522 else()
 523   set(LLVM_ENABLE_DIA_SDK 0)
 524 endif( MSVC )
 525
 526 # FIXME: Signal handler return type, currently hardcoded to 'void'
 527 set(RETSIGTYPE void)
 528
 529 if( LLVM_ENABLE_THREADS )
 530   # Check if threading primitives aren't supported on this platform
 531   if( NOT HAVE_PTHREAD_H AND NOT WIN32 )
 532     set(LLVM_ENABLE_THREADS 0)
 533   endif()
 534 endif()
 535
 536 if( LLVM_ENABLE_THREADS )
 537   message(STATUS "Threads enabled.")
 538 else( LLVM_ENABLE_THREADS )
 539   message(STATUS "Threads disabled.")
 540 endif()
 541
 542 if (LLVM_ENABLE_ZLIB )
 543   # Check if zlib is available in the system.
 544   if ( NOT HAVE_ZLIB_H OR NOT HAVE_LIBZ )
 545     set(LLVM_ENABLE_ZLIB 0)
 546   endif()
 547 endif()
 548
 549 if (LLVM_ENABLE_DOXYGEN)
 550   message(STATUS "Doxygen enabled.")
 551   find_package(Doxygen REQUIRED)
 552
 553   if (DOXYGEN_FOUND)
 554     # If we find doxygen and we want to enable doxygen by default create a
 555     # global aggregate doxygen target for generating llvm and any/all
 556     # subprojects doxygen documentation.
 557     if (LLVM_BUILD_DOCS)
 558       add_custom_target(doxygen ALL)
 559     endif()
 560
 561     option(LLVM_DOXYGEN_EXTERNAL_SEARCH "Enable doxygen external search." OFF)
 562     if (LLVM_DOXYGEN_EXTERNAL_SEARCH)
 563       set(LLVM_DOXYGEN_SEARCHENGINE_URL "" CACHE STRING "URL to use for external search.")
 564       set(LLVM_DOXYGEN_SEARCH_MAPPINGS "" CACHE STRING "Doxygen Search Mappings")
 565     endif()
 566   endif()
 567 else()
 568   message(STATUS "Doxygen disabled.")
 569 endif()
 570
 571 set(LLVM_BINDINGS "")
 572 if(WIN32)
 573   message(STATUS "Go bindings disabled.")
 574 else()
 575   find_program(GO_EXECUTABLE NAMES go DOC "go executable")
 576   if(GO_EXECUTABLE STREQUAL "GO_EXECUTABLE-NOTFOUND")
 577     message(STATUS "Go bindings disabled.")
 578   else()
 579     execute_process(COMMAND ${GO_EXECUTABLE} run ${PROJECT_SOURCE_DIR}/bindings/go/conftest.go
 580                     RESULT_VARIABLE GO_CONFTEST)
 581     if(GO_CONFTEST STREQUAL "0")
 582       set(LLVM_BINDINGS "${LLVM_BINDINGS} go")
 583       message(STATUS "Go bindings enabled.")
 584     else()
 585       message(STATUS "Go bindings disabled, need at least Go 1.2.")
 586     endif()
 587   endif()
 588 endif()
 589
 590 find_program(GOLD_EXECUTABLE NAMES ${LLVM_DEFAULT_TARGET_TRIPLE}-ld.gold ld.gold ${LLVM_DEFAULT_TARGET_TRIPLE}-ld ld DOC "The gold linker")
 591 set(LLVM_BINUTILS_INCDIR "" CACHE PATH
 592         "PATH to binutils/include containing plugin-api.h for gold plugin.")
 593
 594 if(CMAKE_HOST_APPLE AND APPLE)
 595   if(NOT CMAKE_XCRUN)
 596     find_program(CMAKE_XCRUN NAMES xcrun)
 597   endif()
 598   if(CMAKE_XCRUN)
 599     execute_process(COMMAND ${CMAKE_XCRUN} -find ld
 600       OUTPUT_VARIABLE LD64_EXECUTABLE
 601       OUTPUT_STRIP_TRAILING_WHITESPACE)
 602   else()
 603     find_program(LD64_EXECUTABLE NAMES ld DOC "The ld64 linker")
 604   endif()
 605
 606   if(LD64_EXECUTABLE)
 607     set(LD64_EXECUTABLE ${LD64_EXECUTABLE} CACHE PATH "ld64 executable")
 608     message(STATUS "Found ld64 - ${LD64_EXECUTABLE}")
 609   endif()
 610 endif()
 611
 612 # Keep the version requirements in sync with bindings/ocaml/README.txt.
 613 include(FindOCaml)
 614 include(AddOCaml)
 615 if(WIN32)
 616   message(STATUS "OCaml bindings disabled.")
 617 else()
 618   find_package(OCaml)
 619   if( NOT OCAML_FOUND )
 620     message(STATUS "OCaml bindings disabled.")
 621   else()
 622     if( OCAML_VERSION VERSION_LESS "4.00.0" )
 623       message(STATUS "OCaml bindings disabled, need OCaml >=4.00.0.")
 624     else()
 625       find_ocamlfind_package(ctypes VERSION 0.4 OPTIONAL)
 626       if( HAVE_OCAML_CTYPES )
 627         message(STATUS "OCaml bindings enabled.")
 628         find_ocamlfind_package(oUnit VERSION 2 OPTIONAL)
 629         set(LLVM_BINDINGS "${LLVM_BINDINGS} ocaml")
 630
 631         set(LLVM_OCAML_INSTALL_PATH "${OCAML_STDLIB_PATH}" CACHE STRING
 632             "Install directory for LLVM OCaml packages")
 633       else()
 634         message(STATUS "OCaml bindings disabled, need ctypes >=0.4.")
 635       endif()
 636     endif()
 637   endif()
 638 endif()
 639
 640 string(REPLACE " " ";" LLVM_BINDINGS_LIST "${LLVM_BINDINGS}")
 641
 642 function(find_python_module module)
 643   string(REPLACE "." "_" module_name ${module})
 644   string(TOUPPER ${module_name} module_upper)
 645   set(FOUND_VAR PY_${module_upper}_FOUND)
 646
 647   execute_process(COMMAND "${PYTHON_EXECUTABLE}" "-c" "import ${module}"
 648     RESULT_VARIABLE status
 649     ERROR_QUIET)
 650
 651   if(status)
 652     set(${FOUND_VAR} 0 PARENT_SCOPE)
 653     message(STATUS "Could NOT find Python module ${module}")
 654   else()
 655     set(${FOUND_VAR} 1 PARENT_SCOPE)
 656     message(STATUS "Found Python module ${module}")
 657   endif()
 658 endfunction()
 659
 660 set (PYTHON_MODULES
 661   pygments
 662   # Some systems still don't have pygments.lexers.c_cpp which was introduced in
 663   # version 2.0 in 2014...
 664   pygments.lexers.c_cpp
 665   yaml
 666   )
 667 foreach(module ${PYTHON_MODULES})
 668   find_python_module(${module})
 669 endforeach()
 670
 671 if(PY_PYGMENTS_FOUND AND PY_PYGMENTS_LEXERS_C_CPP_FOUND AND PY_YAML_FOUND)
 672   set (LLVM_HAVE_OPT_VIEWER_MODULES 1)
 673 else()
 674   set (LLVM_HAVE_OPT_VIEWER_MODULES 0)
 675 endif()