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(CheckCXXSourceCompiles)
  12 include(TestBigEndian)
  13
  14 include(CheckCompilerVersion)
  15 include(HandleLLVMStdlib)
  16
  17 if( UNIX AND NOT (BEOS OR HAIKU) )
  18   # Used by check_symbol_exists:
  19   set(CMAKE_REQUIRED_LIBRARIES m)
  20 endif()
  21 # x86_64 FreeBSD 9.2 requires libcxxrt to be specified explicitly.
  22 if( CMAKE_SYSTEM MATCHES "FreeBSD-9.2-RELEASE" AND
  23     CMAKE_SIZEOF_VOID_P EQUAL 8 )
  24   list(APPEND CMAKE_REQUIRED_LIBRARIES "cxxrt")
  25 endif()
  26
  27 # Helper macros and functions
  28 macro(add_cxx_include result files)
  29   set(${result} "")
  30   foreach (file_name ${files})
  31      set(${result} "${${result}}#include<${file_name}>\n")
  32   endforeach()
  33 endmacro(add_cxx_include files result)
  34
  35 function(check_type_exists type files variable)
  36   add_cxx_include(includes "${files}")
  37   CHECK_CXX_SOURCE_COMPILES("
  38     ${includes} ${type} typeVar;
  39     int main() {
  40         return 0;
  41     }
  42     " ${variable})
  43 endfunction()
  44
  45 # include checks
  46 check_include_file(dirent.h HAVE_DIRENT_H)
  47 check_include_file(dlfcn.h HAVE_DLFCN_H)
  48 check_include_file(errno.h HAVE_ERRNO_H)
  49 check_include_file(fcntl.h HAVE_FCNTL_H)
  50 check_include_file(inttypes.h HAVE_INTTYPES_H)
  51 check_include_file(link.h HAVE_LINK_H)
  52 check_include_file(malloc.h HAVE_MALLOC_H)
  53 check_include_file(malloc/malloc.h HAVE_MALLOC_MALLOC_H)
  54 check_include_file(ndir.h HAVE_NDIR_H)
  55 if( NOT PURE_WINDOWS )
  56   check_include_file(pthread.h HAVE_PTHREAD_H)
  57 endif()
  58 check_include_file(signal.h HAVE_SIGNAL_H)
  59 check_include_file(stdint.h HAVE_STDINT_H)
  60 check_include_file(sys/dir.h HAVE_SYS_DIR_H)
  61 check_include_file(sys/ioctl.h HAVE_SYS_IOCTL_H)
  62 check_include_file(sys/mman.h HAVE_SYS_MMAN_H)
  63 check_include_file(sys/ndir.h HAVE_SYS_NDIR_H)
  64 check_include_file(sys/param.h HAVE_SYS_PARAM_H)
  65 check_include_file(sys/resource.h HAVE_SYS_RESOURCE_H)
  66 check_include_file(sys/stat.h HAVE_SYS_STAT_H)
  67 check_include_file(sys/time.h HAVE_SYS_TIME_H)
  68 check_include_file(sys/types.h HAVE_SYS_TYPES_H)
  69 check_include_file(sys/uio.h HAVE_SYS_UIO_H)
  70 check_include_file(termios.h HAVE_TERMIOS_H)
  71 check_include_file(unistd.h HAVE_UNISTD_H)
  72 check_include_file(valgrind/valgrind.h HAVE_VALGRIND_VALGRIND_H)
  73 check_include_file(zlib.h HAVE_ZLIB_H)
  74 check_include_file(fenv.h HAVE_FENV_H)
  75 check_symbol_exists(FE_ALL_EXCEPT "fenv.h" HAVE_DECL_FE_ALL_EXCEPT)
  76 check_symbol_exists(FE_INEXACT "fenv.h" HAVE_DECL_FE_INEXACT)
  77
  78 check_include_file(mach/mach.h HAVE_MACH_MACH_H)
  79 check_include_file(histedit.h HAVE_HISTEDIT_H)
  80 check_include_file(CrashReporterClient.h HAVE_CRASHREPORTERCLIENT_H)
  81 if(APPLE)
  82   include(CheckCSourceCompiles)
  83   CHECK_C_SOURCE_COMPILES("
  84      static const char *__crashreporter_info__ = 0;
  85      asm(\".desc ___crashreporter_info__, 0x10\");
  86      int main() { return 0; }"
  87     HAVE_CRASHREPORTER_INFO)
  88 endif()
  89
  90 if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
  91   check_include_file(linux/magic.h HAVE_LINUX_MAGIC_H)
  92   if(NOT HAVE_LINUX_MAGIC_H)
  93     # older kernels use split files
  94     check_include_file(linux/nfs_fs.h HAVE_LINUX_NFS_FS_H)
  95     check_include_file(linux/smb.h HAVE_LINUX_SMB_H)
  96   endif()
  97 endif()
  98
  99 # library checks
 100 if( NOT PURE_WINDOWS )
 101   check_library_exists(pthread pthread_create "" HAVE_LIBPTHREAD)
 102   if (HAVE_LIBPTHREAD)
 103     check_library_exists(pthread pthread_getspecific "" HAVE_PTHREAD_GETSPECIFIC)
 104     check_library_exists(pthread pthread_rwlock_init "" HAVE_PTHREAD_RWLOCK_INIT)
 105     check_library_exists(pthread pthread_mutex_lock "" HAVE_PTHREAD_MUTEX_LOCK)
 106   else()
 107     # this could be Android
 108     check_library_exists(c pthread_create "" PTHREAD_IN_LIBC)
 109     if (PTHREAD_IN_LIBC)
 110       check_library_exists(c pthread_getspecific "" HAVE_PTHREAD_GETSPECIFIC)
 111       check_library_exists(c pthread_rwlock_init "" HAVE_PTHREAD_RWLOCK_INIT)
 112       check_library_exists(c pthread_mutex_lock "" HAVE_PTHREAD_MUTEX_LOCK)
 113     endif()
 114   endif()
 115   check_library_exists(dl dlopen "" HAVE_LIBDL)
 116   check_library_exists(rt clock_gettime "" HAVE_LIBRT)
 117 endif()
 118
 119 if(HAVE_LIBPTHREAD)
 120   # We want to find pthreads library and at the moment we do want to
 121   # have it reported as '-l<lib>' instead of '-pthread'.
 122   # TODO: switch to -pthread once the rest of the build system can deal with it.
 123   set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
 124   set(THREADS_HAVE_PTHREAD_ARG Off)
 125   find_package(Threads REQUIRED)
 126   set(LLVM_PTHREAD_LIB ${CMAKE_THREAD_LIBS_INIT})
 127 endif()
 128
 129 # Don't look for these libraries on Windows. Also don't look for them if we're
 130 # using MSan, since uninstrumented third party code may call MSan interceptors
 131 # like strlen, leading to false positives.
 132 if( NOT PURE_WINDOWS AND NOT LLVM_USE_SANITIZER MATCHES "Memory.*")
 133   if (LLVM_ENABLE_ZLIB)
 134     check_library_exists(z compress2 "" HAVE_LIBZ)
 135   else()
 136     set(HAVE_LIBZ 0)
 137   endif()
 138   # Skip libedit if using ASan as it contains memory leaks.
 139   if (LLVM_ENABLE_LIBEDIT AND HAVE_HISTEDIT_H AND NOT LLVM_USE_SANITIZER MATCHES ".*Address.*")
 140     check_library_exists(edit el_init "" HAVE_LIBEDIT)
 141   else()
 142     set(HAVE_LIBEDIT 0)
 143   endif()
 144   if(LLVM_ENABLE_TERMINFO)
 145     set(HAVE_TERMINFO 0)
 146     foreach(library tinfo terminfo curses ncurses ncursesw)
 147       string(TOUPPER ${library} library_suffix)
 148       check_library_exists(${library} setupterm "" HAVE_TERMINFO_${library_suffix})
 149       if(HAVE_TERMINFO_${library_suffix})
 150         set(HAVE_TERMINFO 1)
 151         set(TERMINFO_LIBS "${library}")
 152         break()
 153       endif()
 154     endforeach()
 155   else()
 156     set(HAVE_TERMINFO 0)
 157   endif()
 158
 159   find_library(ICONV_LIBRARY_PATH NAMES iconv libiconv libiconv-2 c)
 160   set(LLVM_LIBXML2_ENABLED 0)
 161   set(LIBXML2_FOUND 0)
 162   if((LLVM_ENABLE_LIBXML2) AND (CMAKE_SYSTEM_NAME MATCHES "Linux") AND (ICONV_LIBRARY_PATH) AND (NOT LLVM_NATIVE_ARCH MATCHES "i686"))
 163     find_package(LibXml2)
 164     if (LIBXML2_FOUND)
 165       set(LLVM_LIBXML2_ENABLED 1)
 166       include_directories(${LIBXML2_INCLUDE_DIR})
 167       set(LIBXML2_LIBS "xml2")
 168     endif()
 169   endif()
 170 endif()
 171
 172 check_library_exists(xar xar_open "" HAVE_LIBXAR)
 173 if(HAVE_LIBXAR)
 174   set(XAR_LIB xar)
 175 endif()
 176
 177 # function checks
 178 check_symbol_exists(arc4random "stdlib.h" HAVE_DECL_ARC4RANDOM)
 179 find_package(Backtrace)
 180 set(HAVE_BACKTRACE ${Backtrace_FOUND})
 181 set(BACKTRACE_HEADER ${Backtrace_HEADER})
 182 check_symbol_exists(_Unwind_Backtrace "unwind.h" HAVE__UNWIND_BACKTRACE)
 183 check_symbol_exists(getpagesize unistd.h HAVE_GETPAGESIZE)
 184 check_symbol_exists(sysconf unistd.h HAVE_SYSCONF)
 185 check_symbol_exists(getrusage sys/resource.h HAVE_GETRUSAGE)
 186 check_symbol_exists(setrlimit sys/resource.h HAVE_SETRLIMIT)
 187 check_symbol_exists(isatty unistd.h HAVE_ISATTY)
 188 check_symbol_exists(futimens sys/stat.h HAVE_FUTIMENS)
 189 check_symbol_exists(futimes sys/time.h HAVE_FUTIMES)
 190 check_symbol_exists(posix_fallocate fcntl.h HAVE_POSIX_FALLOCATE)
 191 # AddressSanitizer conflicts with lib/Support/Unix/Signals.inc
 192 # Avoid sigaltstack on Apple platforms, where backtrace() cannot handle it
 193 # (rdar://7089625) and _Unwind_Backtrace is unusable because it cannot unwind
 194 # past the signal handler after an assertion failure (rdar://29866587).
 195 if( HAVE_SIGNAL_H AND NOT LLVM_USE_SANITIZER MATCHES ".*Address.*" AND NOT APPLE )
 196   check_symbol_exists(sigaltstack signal.h HAVE_SIGALTSTACK)
 197 endif()
 198 if( HAVE_SYS_UIO_H )
 199   check_symbol_exists(writev sys/uio.h HAVE_WRITEV)
 200 endif()
 201 set(CMAKE_REQUIRED_DEFINITIONS "-D_LARGEFILE64_SOURCE")
 202 check_symbol_exists(lseek64 "sys/types.h;unistd.h" HAVE_LSEEK64)
 203 set(CMAKE_REQUIRED_DEFINITIONS "")
 204 check_symbol_exists(mallctl malloc_np.h HAVE_MALLCTL)
 205 check_symbol_exists(mallinfo malloc.h HAVE_MALLINFO)
 206 check_symbol_exists(malloc_zone_statistics malloc/malloc.h
 207                     HAVE_MALLOC_ZONE_STATISTICS)
 208 check_symbol_exists(mkdtemp "stdlib.h;unistd.h" HAVE_MKDTEMP)
 209 check_symbol_exists(mkstemp "stdlib.h;unistd.h" HAVE_MKSTEMP)
 210 check_symbol_exists(mktemp "stdlib.h;unistd.h" HAVE_MKTEMP)
 211 check_symbol_exists(getcwd unistd.h HAVE_GETCWD)
 212 check_symbol_exists(gettimeofday sys/time.h HAVE_GETTIMEOFDAY)
 213 check_symbol_exists(getrlimit "sys/types.h;sys/time.h;sys/resource.h" HAVE_GETRLIMIT)
 214 check_symbol_exists(posix_spawn spawn.h HAVE_POSIX_SPAWN)
 215 check_symbol_exists(pread unistd.h HAVE_PREAD)
 216 check_symbol_exists(realpath stdlib.h HAVE_REALPATH)
 217 check_symbol_exists(sbrk unistd.h HAVE_SBRK)
 218 check_symbol_exists(strtoll stdlib.h HAVE_STRTOLL)
 219 check_symbol_exists(strerror string.h HAVE_STRERROR)
 220 check_symbol_exists(strerror_r string.h HAVE_STRERROR_R)
 221 check_symbol_exists(strerror_s string.h HAVE_DECL_STRERROR_S)
 222 check_symbol_exists(setenv stdlib.h HAVE_SETENV)
 223 if( PURE_WINDOWS )
 224   check_symbol_exists(_chsize_s io.h HAVE__CHSIZE_S)
 225
 226   check_function_exists(_alloca HAVE__ALLOCA)
 227   check_function_exists(__alloca HAVE___ALLOCA)
 228   check_function_exists(__chkstk HAVE___CHKSTK)
 229   check_function_exists(__chkstk_ms HAVE___CHKSTK_MS)
 230   check_function_exists(___chkstk HAVE____CHKSTK)
 231   check_function_exists(___chkstk_ms HAVE____CHKSTK_MS)
 232
 233   check_function_exists(__ashldi3 HAVE___ASHLDI3)
 234   check_function_exists(__ashrdi3 HAVE___ASHRDI3)
 235   check_function_exists(__divdi3 HAVE___DIVDI3)
 236   check_function_exists(__fixdfdi HAVE___FIXDFDI)
 237   check_function_exists(__fixsfdi HAVE___FIXSFDI)
 238   check_function_exists(__floatdidf HAVE___FLOATDIDF)
 239   check_function_exists(__lshrdi3 HAVE___LSHRDI3)
 240   check_function_exists(__moddi3 HAVE___MODDI3)
 241   check_function_exists(__udivdi3 HAVE___UDIVDI3)
 242   check_function_exists(__umoddi3 HAVE___UMODDI3)
 243
 244   check_function_exists(__main HAVE___MAIN)
 245   check_function_exists(__cmpdi2 HAVE___CMPDI2)
 246 endif()
 247 if( HAVE_DLFCN_H )
 248   if( HAVE_LIBDL )
 249     list(APPEND CMAKE_REQUIRED_LIBRARIES dl)
 250   endif()
 251   check_symbol_exists(dlopen dlfcn.h HAVE_DLOPEN)
 252   check_symbol_exists(dladdr dlfcn.h HAVE_DLADDR)
 253   if( HAVE_LIBDL )
 254     list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES dl)
 255   endif()
 256 endif()
 257
 258 check_symbol_exists(__GLIBC__ stdio.h LLVM_USING_GLIBC)
 259 if( LLVM_USING_GLIBC )
 260   add_definitions( -D_GNU_SOURCE )
 261 endif()
 262 # This check requires _GNU_SOURCE
 263 if(HAVE_LIBPTHREAD)
 264   check_library_exists(pthread pthread_getname_np "" HAVE_PTHREAD_GETNAME_NP)
 265   check_library_exists(pthread pthread_setname_np "" HAVE_PTHREAD_SETNAME_NP)
 266 elseif(PTHREAD_IN_LIBC)
 267   check_library_exists(c pthread_getname_np "" HAVE_PTHREAD_GETNAME_NP)
 268   check_library_exists(c pthread_setname_np "" HAVE_PTHREAD_SETNAME_NP)
 269 endif()
 270
 271 set(headers "sys/types.h")
 272
 273 if (HAVE_INTTYPES_H)
 274   set(headers ${headers} "inttypes.h")
 275 endif()
 276
 277 if (HAVE_STDINT_H)
 278   set(headers ${headers} "stdint.h")
 279 endif()
 280
 281 check_type_exists(int64_t "${headers}" HAVE_INT64_T)
 282 check_type_exists(uint64_t "${headers}" HAVE_UINT64_T)
 283 check_type_exists(u_int64_t "${headers}" HAVE_U_INT64_T)
 284
 285 # available programs checks
 286 function(llvm_find_program name)
 287   string(TOUPPER ${name} NAME)
 288   string(REGEX REPLACE "\\." "_" NAME ${NAME})
 289
 290   find_program(LLVM_PATH_${NAME} NAMES ${ARGV})
 291   mark_as_advanced(LLVM_PATH_${NAME})
 292   if(LLVM_PATH_${NAME})
 293     set(HAVE_${NAME} 1 CACHE INTERNAL "Is ${name} available ?")
 294     mark_as_advanced(HAVE_${NAME})
 295   else(LLVM_PATH_${NAME})
 296     set(HAVE_${NAME} "" CACHE INTERNAL "Is ${name} available ?")
 297   endif(LLVM_PATH_${NAME})
 298 endfunction()
 299
 300 if (LLVM_ENABLE_DOXYGEN)
 301   llvm_find_program(dot)
 302 endif ()
 303
 304 if( LLVM_ENABLE_FFI )
 305   find_path(FFI_INCLUDE_PATH ffi.h PATHS ${FFI_INCLUDE_DIR})
 306   if( EXISTS "${FFI_INCLUDE_PATH}/ffi.h" )
 307     set(FFI_HEADER ffi.h CACHE INTERNAL "")
 308     set(HAVE_FFI_H 1 CACHE INTERNAL "")
 309   else()
 310     find_path(FFI_INCLUDE_PATH ffi/ffi.h PATHS ${FFI_INCLUDE_DIR})
 311     if( EXISTS "${FFI_INCLUDE_PATH}/ffi/ffi.h" )
 312       set(FFI_HEADER ffi/ffi.h CACHE INTERNAL "")
 313       set(HAVE_FFI_FFI_H 1 CACHE INTERNAL "")
 314     endif()
 315   endif()
 316
 317   if( NOT FFI_HEADER )
 318     message(FATAL_ERROR "libffi includes are not found.")
 319   endif()
 320
 321   find_library(FFI_LIBRARY_PATH ffi PATHS ${FFI_LIBRARY_DIR})
 322   if( NOT FFI_LIBRARY_PATH )
 323     message(FATAL_ERROR "libffi is not found.")
 324   endif()
 325
 326   list(APPEND CMAKE_REQUIRED_LIBRARIES ${FFI_LIBRARY_PATH})
 327   list(APPEND CMAKE_REQUIRED_INCLUDES ${FFI_INCLUDE_PATH})
 328   check_symbol_exists(ffi_call ${FFI_HEADER} HAVE_FFI_CALL)
 329   list(REMOVE_ITEM CMAKE_REQUIRED_INCLUDES ${FFI_INCLUDE_PATH})
 330   list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES ${FFI_LIBRARY_PATH})
 331 else()
 332   unset(HAVE_FFI_FFI_H CACHE)
 333   unset(HAVE_FFI_H CACHE)
 334   unset(HAVE_FFI_CALL CACHE)
 335 endif( LLVM_ENABLE_FFI )
 336
 337 # Define LLVM_HAS_ATOMICS if gcc or MSVC atomic builtins are supported.
 338 include(CheckAtomic)
 339
 340 if( LLVM_ENABLE_PIC )
 341   set(ENABLE_PIC 1)
 342 else()
 343   set(ENABLE_PIC 0)
 344   check_cxx_compiler_flag("-fno-pie" SUPPORTS_NO_PIE_FLAG)
 345   if(SUPPORTS_NO_PIE_FLAG)
 346     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fno-pie")
 347   endif()
 348 endif()
 349
 350 check_cxx_compiler_flag("-Wvariadic-macros" SUPPORTS_VARIADIC_MACROS_FLAG)
 351 check_cxx_compiler_flag("-Wgnu-zero-variadic-macro-arguments"
 352                         SUPPORTS_GNU_ZERO_VARIADIC_MACRO_ARGUMENTS_FLAG)
 353
 354 set(USE_NO_MAYBE_UNINITIALIZED 0)
 355 set(USE_NO_UNINITIALIZED 0)
 356
 357 # Disable gcc's potentially uninitialized use analysis as it presents lots of
 358 # false positives.
 359 if (CMAKE_COMPILER_IS_GNUCXX)
 360   check_cxx_compiler_flag("-Wmaybe-uninitialized" HAS_MAYBE_UNINITIALIZED)
 361   if (HAS_MAYBE_UNINITIALIZED)
 362     set(USE_NO_MAYBE_UNINITIALIZED 1)
 363   else()
 364     # Only recent versions of gcc make the distinction between -Wuninitialized
 365     # and -Wmaybe-uninitialized. If -Wmaybe-uninitialized isn't supported, just
 366     # turn off all uninitialized use warnings.
 367     check_cxx_compiler_flag("-Wuninitialized" HAS_UNINITIALIZED)
 368     set(USE_NO_UNINITIALIZED ${HAS_UNINITIALIZED})
 369   endif()
 370 endif()
 371
 372 # By default, we target the host, but this can be overridden at CMake
 373 # invocation time.
 374 include(GetHostTriple)
 375 get_host_triple(LLVM_INFERRED_HOST_TRIPLE)
 376
 377 set(LLVM_HOST_TRIPLE "${LLVM_INFERRED_HOST_TRIPLE}" CACHE STRING
 378     "Host on which LLVM binaries will run")
 379
 380 # Determine the native architecture.
 381 string(TOLOWER "${LLVM_TARGET_ARCH}" LLVM_NATIVE_ARCH)
 382 if( LLVM_NATIVE_ARCH STREQUAL "host" )
 383   string(REGEX MATCH "^[^-]*" LLVM_NATIVE_ARCH ${LLVM_HOST_TRIPLE})
 384 endif ()
 385
 386 if (LLVM_NATIVE_ARCH MATCHES "i[2-6]86")
 387   set(LLVM_NATIVE_ARCH X86)
 388 elseif (LLVM_NATIVE_ARCH STREQUAL "x86")
 389   set(LLVM_NATIVE_ARCH X86)
 390 elseif (LLVM_NATIVE_ARCH STREQUAL "amd64")
 391   set(LLVM_NATIVE_ARCH X86)
 392 elseif (LLVM_NATIVE_ARCH STREQUAL "x86_64")
 393   set(LLVM_NATIVE_ARCH X86)
 394 elseif (LLVM_NATIVE_ARCH MATCHES "sparc")
 395   set(LLVM_NATIVE_ARCH Sparc)
 396 elseif (LLVM_NATIVE_ARCH MATCHES "powerpc")
 397   set(LLVM_NATIVE_ARCH PowerPC)
 398 elseif (LLVM_NATIVE_ARCH MATCHES "aarch64")
 399   set(LLVM_NATIVE_ARCH AArch64)
 400 elseif (LLVM_NATIVE_ARCH MATCHES "arm64")
 401   set(LLVM_NATIVE_ARCH AArch64)
 402 elseif (LLVM_NATIVE_ARCH MATCHES "arm")
 403   set(LLVM_NATIVE_ARCH ARM)
 404 elseif (LLVM_NATIVE_ARCH MATCHES "mips")
 405   set(LLVM_NATIVE_ARCH Mips)
 406 elseif (LLVM_NATIVE_ARCH MATCHES "xcore")
 407   set(LLVM_NATIVE_ARCH XCore)
 408 elseif (LLVM_NATIVE_ARCH MATCHES "msp430")
 409   set(LLVM_NATIVE_ARCH MSP430)
 410 elseif (LLVM_NATIVE_ARCH MATCHES "hexagon")
 411   set(LLVM_NATIVE_ARCH Hexagon)
 412 elseif (LLVM_NATIVE_ARCH MATCHES "s390x")
 413   set(LLVM_NATIVE_ARCH SystemZ)
 414 elseif (LLVM_NATIVE_ARCH MATCHES "wasm32")
 415   set(LLVM_NATIVE_ARCH WebAssembly)
 416 elseif (LLVM_NATIVE_ARCH MATCHES "wasm64")
 417   set(LLVM_NATIVE_ARCH WebAssembly)
 418 else ()
 419   message(FATAL_ERROR "Unknown architecture ${LLVM_NATIVE_ARCH}")
 420 endif ()
 421
 422 # If build targets includes "host", then replace with native architecture.
 423 list(FIND LLVM_TARGETS_TO_BUILD "host" idx)
 424 if( NOT idx LESS 0 )
 425   list(REMOVE_AT LLVM_TARGETS_TO_BUILD ${idx})
 426   list(APPEND LLVM_TARGETS_TO_BUILD ${LLVM_NATIVE_ARCH})
 427   list(REMOVE_DUPLICATES LLVM_TARGETS_TO_BUILD)
 428 endif()
 429
 430 list(FIND LLVM_TARGETS_TO_BUILD ${LLVM_NATIVE_ARCH} NATIVE_ARCH_IDX)
 431 if (NATIVE_ARCH_IDX EQUAL -1)
 432   message(STATUS
 433     "Native target ${LLVM_NATIVE_ARCH} is not selected; lli will not JIT code")
 434 else ()
 435   message(STATUS "Native target architecture is ${LLVM_NATIVE_ARCH}")
 436   set(LLVM_NATIVE_TARGET LLVMInitialize${LLVM_NATIVE_ARCH}Target)
 437   set(LLVM_NATIVE_TARGETINFO LLVMInitialize${LLVM_NATIVE_ARCH}TargetInfo)
 438   set(LLVM_NATIVE_TARGETMC LLVMInitialize${LLVM_NATIVE_ARCH}TargetMC)
 439   set(LLVM_NATIVE_ASMPRINTER LLVMInitialize${LLVM_NATIVE_ARCH}AsmPrinter)
 440
 441   # We don't have an ASM parser for all architectures yet.
 442   if (EXISTS ${PROJECT_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/AsmParser/CMakeLists.txt)
 443     set(LLVM_NATIVE_ASMPARSER LLVMInitialize${LLVM_NATIVE_ARCH}AsmParser)
 444   endif ()
 445
 446   # We don't have an disassembler for all architectures yet.
 447   if (EXISTS ${PROJECT_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/Disassembler/CMakeLists.txt)
 448     set(LLVM_NATIVE_DISASSEMBLER LLVMInitialize${LLVM_NATIVE_ARCH}Disassembler)
 449   endif ()
 450 endif ()
 451
 452 if( MINGW )
 453   set(HAVE_LIBPSAPI 1)
 454   set(HAVE_LIBSHELL32 1)
 455   # TODO: Check existence of libraries.
 456   #   include(CheckLibraryExists)
 457 endif( MINGW )
 458
 459 if (NOT HAVE_STRTOLL)
 460   # Use _strtoi64 if strtoll is not available.
 461   check_symbol_exists(_strtoi64 stdlib.h have_strtoi64)
 462   if (have_strtoi64)
 463     set(HAVE_STRTOLL 1)
 464     set(strtoll "_strtoi64")
 465     set(strtoull "_strtoui64")
 466   endif ()
 467 endif ()
 468
 469 if( MSVC )
 470   set(SHLIBEXT ".lib")
 471   set(stricmp "_stricmp")
 472   set(strdup "_strdup")
 473
 474   # See if the DIA SDK is available and usable.
 475   set(MSVC_DIA_SDK_DIR "$ENV{VSINSTALLDIR}DIA SDK")
 476
 477   # Due to a bug in MSVC 2013's installation software, it is possible
 478   # for MSVC 2013 to write the DIA SDK into the Visual Studio 2012
 479   # install directory.  If this happens, the installation is corrupt
 480   # and there's nothing we can do.  It happens with enough frequency
 481   # though that we should handle it.  We do so by simply checking that
 482   # the DIA SDK folder exists.  Should this happen you will need to
 483   # uninstall VS 2012 and then re-install VS 2013.
 484   if (IS_DIRECTORY ${MSVC_DIA_SDK_DIR})
 485     set(HAVE_DIA_SDK 1)
 486   else()
 487     set(HAVE_DIA_SDK 0)
 488   endif()
 489
 490   option(LLVM_ENABLE_DIA_SDK "Use MSVC DIA SDK for debugging if available."
 491                              ${HAVE_DIA_SDK})
 492
 493   if(LLVM_ENABLE_DIA_SDK AND NOT HAVE_DIA_SDK)
 494     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.")
 495   endif()
 496 else()
 497   set(LLVM_ENABLE_DIA_SDK 0)
 498 endif( MSVC )
 499
 500 # FIXME: Signal handler return type, currently hardcoded to 'void'
 501 set(RETSIGTYPE void)
 502
 503 if( LLVM_ENABLE_THREADS )
 504   # Check if threading primitives aren't supported on this platform
 505   if( NOT HAVE_PTHREAD_H AND NOT WIN32 )
 506     set(LLVM_ENABLE_THREADS 0)
 507   endif()
 508 endif()
 509
 510 if( LLVM_ENABLE_THREADS )
 511   message(STATUS "Threads enabled.")
 512 else( LLVM_ENABLE_THREADS )
 513   message(STATUS "Threads disabled.")
 514 endif()
 515
 516 if (LLVM_ENABLE_ZLIB )
 517   # Check if zlib is available in the system.
 518   if ( NOT HAVE_ZLIB_H OR NOT HAVE_LIBZ )
 519     set(LLVM_ENABLE_ZLIB 0)
 520   endif()
 521 endif()
 522
 523 if (LLVM_ENABLE_DOXYGEN)
 524   message(STATUS "Doxygen enabled.")
 525   find_package(Doxygen REQUIRED)
 526
 527   if (DOXYGEN_FOUND)
 528     # If we find doxygen and we want to enable doxygen by default create a
 529     # global aggregate doxygen target for generating llvm and any/all
 530     # subprojects doxygen documentation.
 531     if (LLVM_BUILD_DOCS)
 532       add_custom_target(doxygen ALL)
 533     endif()
 534
 535     option(LLVM_DOXYGEN_EXTERNAL_SEARCH "Enable doxygen external search." OFF)
 536     if (LLVM_DOXYGEN_EXTERNAL_SEARCH)
 537       set(LLVM_DOXYGEN_SEARCHENGINE_URL "" CACHE STRING "URL to use for external search.")
 538       set(LLVM_DOXYGEN_SEARCH_MAPPINGS "" CACHE STRING "Doxygen Search Mappings")
 539     endif()
 540   endif()
 541 else()
 542   message(STATUS "Doxygen disabled.")
 543 endif()
 544
 545 set(LLVM_BINDINGS "")
 546 if(WIN32)
 547   message(STATUS "Go bindings disabled.")
 548 else()
 549   find_program(GO_EXECUTABLE NAMES go DOC "go executable")
 550   if(GO_EXECUTABLE STREQUAL "GO_EXECUTABLE-NOTFOUND")
 551     message(STATUS "Go bindings disabled.")
 552   else()
 553     execute_process(COMMAND ${GO_EXECUTABLE} run ${PROJECT_SOURCE_DIR}/bindings/go/conftest.go
 554                     RESULT_VARIABLE GO_CONFTEST)
 555     if(GO_CONFTEST STREQUAL "0")
 556       set(LLVM_BINDINGS "${LLVM_BINDINGS} go")
 557       message(STATUS "Go bindings enabled.")
 558     else()
 559       message(STATUS "Go bindings disabled, need at least Go 1.2.")
 560     endif()
 561   endif()
 562 endif()
 563
 564 find_program(GOLD_EXECUTABLE NAMES ${LLVM_DEFAULT_TARGET_TRIPLE}-ld.gold ld.gold ${LLVM_DEFAULT_TARGET_TRIPLE}-ld ld DOC "The gold linker")
 565 set(LLVM_BINUTILS_INCDIR "" CACHE PATH
 566         "PATH to binutils/include containing plugin-api.h for gold plugin.")
 567
 568 if(CMAKE_HOST_APPLE AND APPLE)
 569   if(NOT CMAKE_XCRUN)
 570     find_program(CMAKE_XCRUN NAMES xcrun)
 571   endif()
 572   if(CMAKE_XCRUN)
 573     execute_process(COMMAND ${CMAKE_XCRUN} -find ld
 574       OUTPUT_VARIABLE LD64_EXECUTABLE
 575       OUTPUT_STRIP_TRAILING_WHITESPACE)
 576   else()
 577     find_program(LD64_EXECUTABLE NAMES ld DOC "The ld64 linker")
 578   endif()
 579
 580   if(LD64_EXECUTABLE)
 581     set(LD64_EXECUTABLE ${LD64_EXECUTABLE} CACHE PATH "ld64 executable")
 582     message(STATUS "Found ld64 - ${LD64_EXECUTABLE}")
 583   endif()
 584 endif()
 585
 586 # Keep the version requirements in sync with bindings/ocaml/README.txt.
 587 include(FindOCaml)
 588 include(AddOCaml)
 589 if(WIN32)
 590   message(STATUS "OCaml bindings disabled.")
 591 else()
 592   find_package(OCaml)
 593   if( NOT OCAML_FOUND )
 594     message(STATUS "OCaml bindings disabled.")
 595   else()
 596     if( OCAML_VERSION VERSION_LESS "4.00.0" )
 597       message(STATUS "OCaml bindings disabled, need OCaml >=4.00.0.")
 598     else()
 599       find_ocamlfind_package(ctypes VERSION 0.4 OPTIONAL)
 600       if( HAVE_OCAML_CTYPES )
 601         message(STATUS "OCaml bindings enabled.")
 602         find_ocamlfind_package(oUnit VERSION 2 OPTIONAL)
 603         set(LLVM_BINDINGS "${LLVM_BINDINGS} ocaml")
 604
 605         set(LLVM_OCAML_INSTALL_PATH "${OCAML_STDLIB_PATH}" CACHE STRING
 606             "Install directory for LLVM OCaml packages")
 607       else()
 608         message(STATUS "OCaml bindings disabled, need ctypes >=0.4.")
 609       endif()
 610     endif()
 611   endif()
 612 endif()
 613
 614 string(REPLACE " " ";" LLVM_BINDINGS_LIST "${LLVM_BINDINGS}")