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 # include checks
  29 check_include_file(dirent.h HAVE_DIRENT_H)
  30 check_include_file(dlfcn.h HAVE_DLFCN_H)
  31 check_include_file(errno.h HAVE_ERRNO_H)
  32 check_include_file(fcntl.h HAVE_FCNTL_H)
  33 check_include_file(link.h HAVE_LINK_H)
  34 check_include_file(malloc.h HAVE_MALLOC_H)
  35 check_include_file(malloc/malloc.h HAVE_MALLOC_MALLOC_H)
  36 check_include_file(ndir.h HAVE_NDIR_H)
  37 if( NOT PURE_WINDOWS )
  38   check_include_file(pthread.h HAVE_PTHREAD_H)
  39 endif()
  40 check_include_file(signal.h HAVE_SIGNAL_H)
  41 check_include_file(sys/dir.h HAVE_SYS_DIR_H)
  42 check_include_file(sys/ioctl.h HAVE_SYS_IOCTL_H)
  43 check_include_file(sys/mman.h HAVE_SYS_MMAN_H)
  44 check_include_file(sys/ndir.h HAVE_SYS_NDIR_H)
  45 check_include_file(sys/param.h HAVE_SYS_PARAM_H)
  46 check_include_file(sys/resource.h HAVE_SYS_RESOURCE_H)
  47 check_include_file(sys/stat.h HAVE_SYS_STAT_H)
  48 check_include_file(sys/time.h HAVE_SYS_TIME_H)
  49 check_include_file(sys/types.h HAVE_SYS_TYPES_H)
  50 check_include_file(termios.h HAVE_TERMIOS_H)
  51 check_include_file(unistd.h HAVE_UNISTD_H)
  52 check_include_file(valgrind/valgrind.h HAVE_VALGRIND_VALGRIND_H)
  53 check_include_file(zlib.h HAVE_ZLIB_H)
  54 check_include_file(fenv.h HAVE_FENV_H)
  55 check_symbol_exists(FE_ALL_EXCEPT "fenv.h" HAVE_DECL_FE_ALL_EXCEPT)
  56 check_symbol_exists(FE_INEXACT "fenv.h" HAVE_DECL_FE_INEXACT)
  57
  58 check_include_file(mach/mach.h HAVE_MACH_MACH_H)
  59 check_include_file(histedit.h HAVE_HISTEDIT_H)
  60 check_include_file(CrashReporterClient.h HAVE_CRASHREPORTERCLIENT_H)
  61 if(APPLE)
  62   include(CheckCSourceCompiles)
  63   CHECK_C_SOURCE_COMPILES("
  64      static const char *__crashreporter_info__ = 0;
  65      asm(\".desc ___crashreporter_info__, 0x10\");
  66      int main() { return 0; }"
  67     HAVE_CRASHREPORTER_INFO)
  68 endif()
  69
  70 if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
  71   check_include_file(linux/magic.h HAVE_LINUX_MAGIC_H)
  72   if(NOT HAVE_LINUX_MAGIC_H)
  73     # older kernels use split files
  74     check_include_file(linux/nfs_fs.h HAVE_LINUX_NFS_FS_H)
  75     check_include_file(linux/smb.h HAVE_LINUX_SMB_H)
  76   endif()
  77 endif()
  78
  79 # library checks
  80 if( NOT PURE_WINDOWS )
  81   check_library_exists(pthread pthread_create "" HAVE_LIBPTHREAD)
  82   if (HAVE_LIBPTHREAD)
  83     check_library_exists(pthread pthread_getspecific "" HAVE_PTHREAD_GETSPECIFIC)
  84     check_library_exists(pthread pthread_rwlock_init "" HAVE_PTHREAD_RWLOCK_INIT)
  85     check_library_exists(pthread pthread_mutex_lock "" HAVE_PTHREAD_MUTEX_LOCK)
  86   else()
  87     # this could be Android
  88     check_library_exists(c pthread_create "" PTHREAD_IN_LIBC)
  89     if (PTHREAD_IN_LIBC)
  90       check_library_exists(c pthread_getspecific "" HAVE_PTHREAD_GETSPECIFIC)
  91       check_library_exists(c pthread_rwlock_init "" HAVE_PTHREAD_RWLOCK_INIT)
  92       check_library_exists(c pthread_mutex_lock "" HAVE_PTHREAD_MUTEX_LOCK)
  93     endif()
  94   endif()
  95   check_library_exists(dl dlopen "" HAVE_LIBDL)
  96   check_library_exists(rt clock_gettime "" HAVE_LIBRT)
  97 endif()
  98
  99 if(HAVE_LIBPTHREAD)
 100   # We want to find pthreads library and at the moment we do want to
 101   # have it reported as '-l<lib>' instead of '-pthread'.
 102   # TODO: switch to -pthread once the rest of the build system can deal with it.
 103   set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
 104   set(THREADS_HAVE_PTHREAD_ARG Off)
 105   find_package(Threads REQUIRED)
 106   set(LLVM_PTHREAD_LIB ${CMAKE_THREAD_LIBS_INIT})
 107 endif()
 108
 109 # Don't look for these libraries if we're using MSan, since uninstrumented third
 110 # party code may call MSan interceptors like strlen, leading to false positives.
 111 if(NOT LLVM_USE_SANITIZER MATCHES "Memory.*")
 112   set(HAVE_LIBZ 0)
 113   if(LLVM_ENABLE_ZLIB)
 114     foreach(library z zlib_static zlib)
 115       string(TOUPPER ${library} library_suffix)
 116       check_library_exists(${library} compress2 "" HAVE_LIBZ_${library_suffix})
 117       if(HAVE_LIBZ_${library_suffix})
 118         set(HAVE_LIBZ 1)
 119         set(ZLIB_LIBRARIES "${library}")
 120         break()
 121       endif()
 122     endforeach()
 123   endif()
 124
 125   # Don't look for these libraries on Windows.
 126   if (NOT PURE_WINDOWS)
 127     # Skip libedit if using ASan as it contains memory leaks.
 128     if (LLVM_ENABLE_LIBEDIT AND HAVE_HISTEDIT_H AND NOT LLVM_USE_SANITIZER MATCHES ".*Address.*")
 129       check_library_exists(edit el_init "" HAVE_LIBEDIT)
 130     else()
 131       set(HAVE_LIBEDIT 0)
 132     endif()
 133     if(LLVM_ENABLE_TERMINFO)
 134       set(HAVE_TERMINFO 0)
 135       foreach(library tinfo terminfo curses ncurses ncursesw)
 136         string(TOUPPER ${library} library_suffix)
 137         check_library_exists(${library} setupterm "" HAVE_TERMINFO_${library_suffix})
 138         if(HAVE_TERMINFO_${library_suffix})
 139           set(HAVE_TERMINFO 1)
 140           set(TERMINFO_LIBS "${library}")
 141           break()
 142         endif()
 143       endforeach()
 144     else()
 145       set(HAVE_TERMINFO 0)
 146     endif()
 147
 148     find_library(ICONV_LIBRARY_PATH NAMES iconv libiconv libiconv-2 c)
 149     set(LLVM_LIBXML2_ENABLED 0)
 150     set(LIBXML2_FOUND 0)
 151     if((LLVM_ENABLE_LIBXML2) AND ((CMAKE_SYSTEM_NAME MATCHES "Linux") AND (ICONV_LIBRARY_PATH) OR APPLE))
 152       find_package(LibXml2)
 153       if (LIBXML2_FOUND)
 154         set(LLVM_LIBXML2_ENABLED 1)
 155         include_directories(${LIBXML2_INCLUDE_DIR})
 156         set(LIBXML2_LIBS "xml2")
 157       endif()
 158     endif()
 159   endif()
 160 endif()
 161
 162 if (LLVM_ENABLE_LIBXML2 STREQUAL "FORCE_ON" AND NOT LLVM_LIBXML2_ENABLED)
 163   message(FATAL_ERROR "Failed to congifure libxml2")
 164 endif()
 165
 166 check_library_exists(xar xar_open "" HAVE_LIBXAR)
 167 if(HAVE_LIBXAR)
 168   set(XAR_LIB xar)
 169 endif()
 170
 171 # function checks
 172 check_symbol_exists(arc4random "stdlib.h" HAVE_DECL_ARC4RANDOM)
 173 find_package(Backtrace)
 174 set(HAVE_BACKTRACE ${Backtrace_FOUND})
 175 set(BACKTRACE_HEADER ${Backtrace_HEADER})
 176
 177 # Prevent check_symbol_exists from using API that is not supported for a given
 178 # deployment target.
 179 check_c_compiler_flag("-Werror=unguarded-availability-new" "C_SUPPORTS_WERROR_UNGUARDED_AVAILABILITY_NEW")
 180 if(C_SUPPORTS_WERROR_UNGUARDED_AVAILABILITY_NEW)
 181   set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -Werror=unguarded-availability-new")
 182 endif()
 183
 184 check_symbol_exists(_Unwind_Backtrace "unwind.h" HAVE__UNWIND_BACKTRACE)
 185 check_symbol_exists(getpagesize unistd.h HAVE_GETPAGESIZE)
 186 check_symbol_exists(sysconf unistd.h HAVE_SYSCONF)
 187 check_symbol_exists(getrusage sys/resource.h HAVE_GETRUSAGE)
 188 check_symbol_exists(setrlimit sys/resource.h HAVE_SETRLIMIT)
 189 check_symbol_exists(isatty unistd.h HAVE_ISATTY)
 190 check_symbol_exists(futimens sys/stat.h HAVE_FUTIMENS)
 191 check_symbol_exists(futimes sys/time.h HAVE_FUTIMES)
 192 check_symbol_exists(posix_fallocate fcntl.h HAVE_POSIX_FALLOCATE)
 193 # AddressSanitizer conflicts with lib/Support/Unix/Signals.inc
 194 # Avoid sigaltstack on Apple platforms, where backtrace() cannot handle it
 195 # (rdar://7089625) and _Unwind_Backtrace is unusable because it cannot unwind
 196 # past the signal handler after an assertion failure (rdar://29866587).
 197 if( HAVE_SIGNAL_H AND NOT LLVM_USE_SANITIZER MATCHES ".*Address.*" AND NOT APPLE )
 198   check_symbol_exists(sigaltstack signal.h HAVE_SIGALTSTACK)
 199 endif()
 200 set(CMAKE_REQUIRED_DEFINITIONS "-D_LARGEFILE64_SOURCE")
 201 check_symbol_exists(lseek64 "sys/types.h;unistd.h" HAVE_LSEEK64)
 202 set(CMAKE_REQUIRED_DEFINITIONS "")
 203 check_symbol_exists(mallctl malloc_np.h HAVE_MALLCTL)
 204 check_symbol_exists(mallinfo malloc.h HAVE_MALLINFO)
 205 check_symbol_exists(malloc_zone_statistics malloc/malloc.h
 206                     HAVE_MALLOC_ZONE_STATISTICS)
 207 check_symbol_exists(getrlimit "sys/types.h;sys/time.h;sys/resource.h" HAVE_GETRLIMIT)
 208 check_symbol_exists(posix_spawn spawn.h HAVE_POSIX_SPAWN)
 209 check_symbol_exists(pread unistd.h HAVE_PREAD)
 210 check_symbol_exists(realpath stdlib.h HAVE_REALPATH)
 211 check_symbol_exists(sbrk unistd.h HAVE_SBRK)
 212 check_symbol_exists(strerror string.h HAVE_STRERROR)
 213 check_symbol_exists(strerror_r string.h HAVE_STRERROR_R)
 214 check_symbol_exists(strerror_s string.h HAVE_DECL_STRERROR_S)
 215 check_symbol_exists(setenv stdlib.h HAVE_SETENV)
 216 if( PURE_WINDOWS )
 217   check_symbol_exists(_chsize_s io.h HAVE__CHSIZE_S)
 218
 219   check_function_exists(_alloca HAVE__ALLOCA)
 220   check_function_exists(__alloca HAVE___ALLOCA)
 221   check_function_exists(__chkstk HAVE___CHKSTK)
 222   check_function_exists(__chkstk_ms HAVE___CHKSTK_MS)
 223   check_function_exists(___chkstk HAVE____CHKSTK)
 224   check_function_exists(___chkstk_ms HAVE____CHKSTK_MS)
 225
 226   check_function_exists(__ashldi3 HAVE___ASHLDI3)
 227   check_function_exists(__ashrdi3 HAVE___ASHRDI3)
 228   check_function_exists(__divdi3 HAVE___DIVDI3)
 229   check_function_exists(__fixdfdi HAVE___FIXDFDI)
 230   check_function_exists(__fixsfdi HAVE___FIXSFDI)
 231   check_function_exists(__floatdidf HAVE___FLOATDIDF)
 232   check_function_exists(__lshrdi3 HAVE___LSHRDI3)
 233   check_function_exists(__moddi3 HAVE___MODDI3)
 234   check_function_exists(__udivdi3 HAVE___UDIVDI3)
 235   check_function_exists(__umoddi3 HAVE___UMODDI3)
 236
 237   check_function_exists(__main HAVE___MAIN)
 238   check_function_exists(__cmpdi2 HAVE___CMPDI2)
 239 endif()
 240 if( HAVE_DLFCN_H )
 241   if( HAVE_LIBDL )
 242     list(APPEND CMAKE_REQUIRED_LIBRARIES dl)
 243   endif()
 244   check_symbol_exists(dlopen dlfcn.h HAVE_DLOPEN)
 245   check_symbol_exists(dladdr dlfcn.h HAVE_DLADDR)
 246   if( HAVE_LIBDL )
 247     list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES dl)
 248   endif()
 249 endif()
 250
 251 check_symbol_exists(__GLIBC__ stdio.h LLVM_USING_GLIBC)
 252 if( LLVM_USING_GLIBC )
 253   add_definitions( -D_GNU_SOURCE )
 254   list(APPEND CMAKE_REQUIRED_DEFINITIONS "-D_GNU_SOURCE")
 255 endif()
 256 # This check requires _GNU_SOURCE
 257 check_symbol_exists(sched_getaffinity sched.h HAVE_SCHED_GETAFFINITY)
 258 check_symbol_exists(CPU_COUNT sched.h HAVE_CPU_COUNT)
 259 if(HAVE_LIBPTHREAD)
 260   check_library_exists(pthread pthread_getname_np "" HAVE_PTHREAD_GETNAME_NP)
 261   check_library_exists(pthread pthread_setname_np "" HAVE_PTHREAD_SETNAME_NP)
 262 elseif(PTHREAD_IN_LIBC)
 263   check_library_exists(c pthread_getname_np "" HAVE_PTHREAD_GETNAME_NP)
 264   check_library_exists(c pthread_setname_np "" HAVE_PTHREAD_SETNAME_NP)
 265 endif()
 266
 267 # available programs checks
 268 function(llvm_find_program name)
 269   string(TOUPPER ${name} NAME)
 270   string(REGEX REPLACE "\\." "_" NAME ${NAME})
 271
 272   find_program(LLVM_PATH_${NAME} NAMES ${ARGV})
 273   mark_as_advanced(LLVM_PATH_${NAME})
 274   if(LLVM_PATH_${NAME})
 275     set(HAVE_${NAME} 1 CACHE INTERNAL "Is ${name} available ?")
 276     mark_as_advanced(HAVE_${NAME})
 277   else(LLVM_PATH_${NAME})
 278     set(HAVE_${NAME} "" CACHE INTERNAL "Is ${name} available ?")
 279   endif(LLVM_PATH_${NAME})
 280 endfunction()
 281
 282 if (LLVM_ENABLE_DOXYGEN)
 283   llvm_find_program(dot)
 284 endif ()
 285
 286 if( LLVM_ENABLE_FFI )
 287   find_path(FFI_INCLUDE_PATH ffi.h PATHS ${FFI_INCLUDE_DIR})
 288   if( EXISTS "${FFI_INCLUDE_PATH}/ffi.h" )
 289     set(FFI_HEADER ffi.h CACHE INTERNAL "")
 290     set(HAVE_FFI_H 1 CACHE INTERNAL "")
 291   else()
 292     find_path(FFI_INCLUDE_PATH ffi/ffi.h PATHS ${FFI_INCLUDE_DIR})
 293     if( EXISTS "${FFI_INCLUDE_PATH}/ffi/ffi.h" )
 294       set(FFI_HEADER ffi/ffi.h CACHE INTERNAL "")
 295       set(HAVE_FFI_FFI_H 1 CACHE INTERNAL "")
 296     endif()
 297   endif()
 298
 299   if( NOT FFI_HEADER )
 300     message(FATAL_ERROR "libffi includes are not found.")
 301   endif()
 302
 303   find_library(FFI_LIBRARY_PATH ffi PATHS ${FFI_LIBRARY_DIR})
 304   if( NOT FFI_LIBRARY_PATH )
 305     message(FATAL_ERROR "libffi is not found.")
 306   endif()
 307
 308   list(APPEND CMAKE_REQUIRED_LIBRARIES ${FFI_LIBRARY_PATH})
 309   list(APPEND CMAKE_REQUIRED_INCLUDES ${FFI_INCLUDE_PATH})
 310   check_symbol_exists(ffi_call ${FFI_HEADER} HAVE_FFI_CALL)
 311   list(REMOVE_ITEM CMAKE_REQUIRED_INCLUDES ${FFI_INCLUDE_PATH})
 312   list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES ${FFI_LIBRARY_PATH})
 313 else()
 314   unset(HAVE_FFI_FFI_H CACHE)
 315   unset(HAVE_FFI_H CACHE)
 316   unset(HAVE_FFI_CALL CACHE)
 317 endif( LLVM_ENABLE_FFI )
 318
 319 # Define LLVM_HAS_ATOMICS if gcc or MSVC atomic builtins are supported.
 320 include(CheckAtomic)
 321
 322 if( LLVM_ENABLE_PIC )
 323   set(ENABLE_PIC 1)
 324 else()
 325   set(ENABLE_PIC 0)
 326   check_cxx_compiler_flag("-fno-pie" SUPPORTS_NO_PIE_FLAG)
 327   if(SUPPORTS_NO_PIE_FLAG)
 328     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fno-pie")
 329   endif()
 330 endif()
 331
 332 check_cxx_compiler_flag("-Wvariadic-macros" SUPPORTS_VARIADIC_MACROS_FLAG)
 333 check_cxx_compiler_flag("-Wgnu-zero-variadic-macro-arguments"
 334                         SUPPORTS_GNU_ZERO_VARIADIC_MACRO_ARGUMENTS_FLAG)
 335
 336 set(USE_NO_MAYBE_UNINITIALIZED 0)
 337 set(USE_NO_UNINITIALIZED 0)
 338
 339 # Disable gcc's potentially uninitialized use analysis as it presents lots of
 340 # false positives.
 341 if (CMAKE_COMPILER_IS_GNUCXX)
 342   check_cxx_compiler_flag("-Wmaybe-uninitialized" HAS_MAYBE_UNINITIALIZED)
 343   if (HAS_MAYBE_UNINITIALIZED)
 344     set(USE_NO_MAYBE_UNINITIALIZED 1)
 345   else()
 346     # Only recent versions of gcc make the distinction between -Wuninitialized
 347     # and -Wmaybe-uninitialized. If -Wmaybe-uninitialized isn't supported, just
 348     # turn off all uninitialized use warnings.
 349     check_cxx_compiler_flag("-Wuninitialized" HAS_UNINITIALIZED)
 350     set(USE_NO_UNINITIALIZED ${HAS_UNINITIALIZED})
 351   endif()
 352 endif()
 353
 354 # By default, we target the host, but this can be overridden at CMake
 355 # invocation time.
 356 include(GetHostTriple)
 357 get_host_triple(LLVM_INFERRED_HOST_TRIPLE)
 358
 359 set(LLVM_HOST_TRIPLE "${LLVM_INFERRED_HOST_TRIPLE}" CACHE STRING
 360     "Host on which LLVM binaries will run")
 361
 362 # Determine the native architecture.
 363 string(TOLOWER "${LLVM_TARGET_ARCH}" LLVM_NATIVE_ARCH)
 364 if( LLVM_NATIVE_ARCH STREQUAL "host" )
 365   string(REGEX MATCH "^[^-]*" LLVM_NATIVE_ARCH ${LLVM_HOST_TRIPLE})
 366 endif ()
 367
 368 if (LLVM_NATIVE_ARCH MATCHES "i[2-6]86")
 369   set(LLVM_NATIVE_ARCH X86)
 370 elseif (LLVM_NATIVE_ARCH STREQUAL "x86")
 371   set(LLVM_NATIVE_ARCH X86)
 372 elseif (LLVM_NATIVE_ARCH STREQUAL "amd64")
 373   set(LLVM_NATIVE_ARCH X86)
 374 elseif (LLVM_NATIVE_ARCH STREQUAL "x86_64")
 375   set(LLVM_NATIVE_ARCH X86)
 376 elseif (LLVM_NATIVE_ARCH MATCHES "sparc")
 377   set(LLVM_NATIVE_ARCH Sparc)
 378 elseif (LLVM_NATIVE_ARCH MATCHES "powerpc")
 379   set(LLVM_NATIVE_ARCH PowerPC)
 380 elseif (LLVM_NATIVE_ARCH MATCHES "aarch64")
 381   set(LLVM_NATIVE_ARCH AArch64)
 382 elseif (LLVM_NATIVE_ARCH MATCHES "arm64")
 383   set(LLVM_NATIVE_ARCH AArch64)
 384 elseif (LLVM_NATIVE_ARCH MATCHES "arm")
 385   set(LLVM_NATIVE_ARCH ARM)
 386 elseif (LLVM_NATIVE_ARCH MATCHES "mips")
 387   set(LLVM_NATIVE_ARCH Mips)
 388 elseif (LLVM_NATIVE_ARCH MATCHES "xcore")
 389   set(LLVM_NATIVE_ARCH XCore)
 390 elseif (LLVM_NATIVE_ARCH MATCHES "msp430")
 391   set(LLVM_NATIVE_ARCH MSP430)
 392 elseif (LLVM_NATIVE_ARCH MATCHES "hexagon")
 393   set(LLVM_NATIVE_ARCH Hexagon)
 394 elseif (LLVM_NATIVE_ARCH MATCHES "s390x")
 395   set(LLVM_NATIVE_ARCH SystemZ)
 396 elseif (LLVM_NATIVE_ARCH MATCHES "wasm32")
 397   set(LLVM_NATIVE_ARCH WebAssembly)
 398 elseif (LLVM_NATIVE_ARCH MATCHES "wasm64")
 399   set(LLVM_NATIVE_ARCH WebAssembly)
 400 elseif (LLVM_NATIVE_ARCH MATCHES "riscv32")
 401   set(LLVM_NATIVE_ARCH RISCV)
 402 elseif (LLVM_NATIVE_ARCH MATCHES "riscv64")
 403   set(LLVM_NATIVE_ARCH RISCV)
 404 else ()
 405   message(FATAL_ERROR "Unknown architecture ${LLVM_NATIVE_ARCH}")
 406 endif ()
 407
 408 # If build targets includes "host", then replace with native architecture.
 409 list(FIND LLVM_TARGETS_TO_BUILD "host" idx)
 410 if( NOT idx LESS 0 )
 411   list(REMOVE_AT LLVM_TARGETS_TO_BUILD ${idx})
 412   list(APPEND LLVM_TARGETS_TO_BUILD ${LLVM_NATIVE_ARCH})
 413   list(REMOVE_DUPLICATES LLVM_TARGETS_TO_BUILD)
 414 endif()
 415
 416 list(FIND LLVM_TARGETS_TO_BUILD ${LLVM_NATIVE_ARCH} NATIVE_ARCH_IDX)
 417 if (NATIVE_ARCH_IDX EQUAL -1)
 418   message(STATUS
 419     "Native target ${LLVM_NATIVE_ARCH} is not selected; lli will not JIT code")
 420 else ()
 421   message(STATUS "Native target architecture is ${LLVM_NATIVE_ARCH}")
 422   set(LLVM_NATIVE_TARGET LLVMInitialize${LLVM_NATIVE_ARCH}Target)
 423   set(LLVM_NATIVE_TARGETINFO LLVMInitialize${LLVM_NATIVE_ARCH}TargetInfo)
 424   set(LLVM_NATIVE_TARGETMC LLVMInitialize${LLVM_NATIVE_ARCH}TargetMC)
 425   set(LLVM_NATIVE_ASMPRINTER LLVMInitialize${LLVM_NATIVE_ARCH}AsmPrinter)
 426
 427   # We don't have an ASM parser for all architectures yet.
 428   if (EXISTS ${PROJECT_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/AsmParser/CMakeLists.txt)
 429     set(LLVM_NATIVE_ASMPARSER LLVMInitialize${LLVM_NATIVE_ARCH}AsmParser)
 430   endif ()
 431
 432   # We don't have an disassembler for all architectures yet.
 433   if (EXISTS ${PROJECT_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/Disassembler/CMakeLists.txt)
 434     set(LLVM_NATIVE_DISASSEMBLER LLVMInitialize${LLVM_NATIVE_ARCH}Disassembler)
 435   endif ()
 436 endif ()
 437
 438 if( MINGW )
 439   set(HAVE_LIBPSAPI 1)
 440   set(HAVE_LIBSHELL32 1)
 441   # TODO: Check existence of libraries.
 442   #   include(CheckLibraryExists)
 443 endif( MINGW )
 444
 445 if( MSVC )
 446   set(SHLIBEXT ".lib")
 447   set(stricmp "_stricmp")
 448   set(strdup "_strdup")
 449
 450   # See if the DIA SDK is available and usable.
 451   set(MSVC_DIA_SDK_DIR "$ENV{VSINSTALLDIR}DIA SDK")
 452
 453   # Due to a bug in MSVC 2013's installation software, it is possible
 454   # for MSVC 2013 to write the DIA SDK into the Visual Studio 2012
 455   # install directory.  If this happens, the installation is corrupt
 456   # and there's nothing we can do.  It happens with enough frequency
 457   # though that we should handle it.  We do so by simply checking that
 458   # the DIA SDK folder exists.  Should this happen you will need to
 459   # uninstall VS 2012 and then re-install VS 2013.
 460   if (IS_DIRECTORY ${MSVC_DIA_SDK_DIR})
 461     set(HAVE_DIA_SDK 1)
 462   else()
 463     set(HAVE_DIA_SDK 0)
 464   endif()
 465
 466   option(LLVM_ENABLE_DIA_SDK "Use MSVC DIA SDK for debugging if available."
 467                              ${HAVE_DIA_SDK})
 468
 469   if(LLVM_ENABLE_DIA_SDK AND NOT HAVE_DIA_SDK)
 470     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.")
 471   endif()
 472 else()
 473   set(LLVM_ENABLE_DIA_SDK 0)
 474 endif( MSVC )
 475
 476 # FIXME: Signal handler return type, currently hardcoded to 'void'
 477 set(RETSIGTYPE void)
 478
 479 if( LLVM_ENABLE_THREADS )
 480   # Check if threading primitives aren't supported on this platform
 481   if( NOT HAVE_PTHREAD_H AND NOT WIN32 )
 482     set(LLVM_ENABLE_THREADS 0)
 483   endif()
 484 endif()
 485
 486 if( LLVM_ENABLE_THREADS )
 487   message(STATUS "Threads enabled.")
 488 else( LLVM_ENABLE_THREADS )
 489   message(STATUS "Threads disabled.")
 490 endif()
 491
 492 if (LLVM_ENABLE_ZLIB )
 493   # Check if zlib is available in the system.
 494   if ( NOT HAVE_ZLIB_H OR NOT HAVE_LIBZ )
 495     set(LLVM_ENABLE_ZLIB 0)
 496   endif()
 497 endif()
 498
 499 if (LLVM_ENABLE_DOXYGEN)
 500   message(STATUS "Doxygen enabled.")
 501   find_package(Doxygen REQUIRED)
 502
 503   if (DOXYGEN_FOUND)
 504     # If we find doxygen and we want to enable doxygen by default create a
 505     # global aggregate doxygen target for generating llvm and any/all
 506     # subprojects doxygen documentation.
 507     if (LLVM_BUILD_DOCS)
 508       add_custom_target(doxygen ALL)
 509     endif()
 510
 511     option(LLVM_DOXYGEN_EXTERNAL_SEARCH "Enable doxygen external search." OFF)
 512     if (LLVM_DOXYGEN_EXTERNAL_SEARCH)
 513       set(LLVM_DOXYGEN_SEARCHENGINE_URL "" CACHE STRING "URL to use for external search.")
 514       set(LLVM_DOXYGEN_SEARCH_MAPPINGS "" CACHE STRING "Doxygen Search Mappings")
 515     endif()
 516   endif()
 517 else()
 518   message(STATUS "Doxygen disabled.")
 519 endif()
 520
 521 set(LLVM_BINDINGS "")
 522 if(WIN32)
 523   message(STATUS "Go bindings disabled.")
 524 else()
 525   find_program(GO_EXECUTABLE NAMES go DOC "go executable")
 526   if(GO_EXECUTABLE STREQUAL "GO_EXECUTABLE-NOTFOUND")
 527     message(STATUS "Go bindings disabled.")
 528   else()
 529     execute_process(COMMAND ${GO_EXECUTABLE} run ${PROJECT_SOURCE_DIR}/bindings/go/conftest.go
 530                     RESULT_VARIABLE GO_CONFTEST)
 531     if(GO_CONFTEST STREQUAL "0")
 532       set(LLVM_BINDINGS "${LLVM_BINDINGS} go")
 533       message(STATUS "Go bindings enabled.")
 534     else()
 535       message(STATUS "Go bindings disabled, need at least Go 1.2.")
 536     endif()
 537   endif()
 538 endif()
 539
 540 find_program(GOLD_EXECUTABLE NAMES ${LLVM_DEFAULT_TARGET_TRIPLE}-ld.gold ld.gold ${LLVM_DEFAULT_TARGET_TRIPLE}-ld ld DOC "The gold linker")
 541 set(LLVM_BINUTILS_INCDIR "" CACHE PATH
 542         "PATH to binutils/include containing plugin-api.h for gold plugin.")
 543
 544 if(CMAKE_HOST_APPLE AND APPLE)
 545   if(NOT CMAKE_XCRUN)
 546     find_program(CMAKE_XCRUN NAMES xcrun)
 547   endif()
 548   if(CMAKE_XCRUN)
 549     execute_process(COMMAND ${CMAKE_XCRUN} -find ld
 550       OUTPUT_VARIABLE LD64_EXECUTABLE
 551       OUTPUT_STRIP_TRAILING_WHITESPACE)
 552   else()
 553     find_program(LD64_EXECUTABLE NAMES ld DOC "The ld64 linker")
 554   endif()
 555
 556   if(LD64_EXECUTABLE)
 557     set(LD64_EXECUTABLE ${LD64_EXECUTABLE} CACHE PATH "ld64 executable")
 558     message(STATUS "Found ld64 - ${LD64_EXECUTABLE}")
 559   endif()
 560 endif()
 561
 562 # Keep the version requirements in sync with bindings/ocaml/README.txt.
 563 include(FindOCaml)
 564 include(AddOCaml)
 565 if(WIN32)
 566   message(STATUS "OCaml bindings disabled.")
 567 else()
 568   find_package(OCaml)
 569   if( NOT OCAML_FOUND )
 570     message(STATUS "OCaml bindings disabled.")
 571   else()
 572     if( OCAML_VERSION VERSION_LESS "4.00.0" )
 573       message(STATUS "OCaml bindings disabled, need OCaml >=4.00.0.")
 574     else()
 575       find_ocamlfind_package(ctypes VERSION 0.4 OPTIONAL)
 576       if( HAVE_OCAML_CTYPES )
 577         message(STATUS "OCaml bindings enabled.")
 578         find_ocamlfind_package(oUnit VERSION 2 OPTIONAL)
 579         set(LLVM_BINDINGS "${LLVM_BINDINGS} ocaml")
 580
 581         set(LLVM_OCAML_INSTALL_PATH "${OCAML_STDLIB_PATH}" CACHE STRING
 582             "Install directory for LLVM OCaml packages")
 583       else()
 584         message(STATUS "OCaml bindings disabled, need ctypes >=0.4.")
 585       endif()
 586     endif()
 587   endif()
 588 endif()
 589
 590 string(REPLACE " " ";" LLVM_BINDINGS_LIST "${LLVM_BINDINGS}")
 591
 592 function(find_python_module module)
 593   string(REPLACE "." "_" module_name ${module})
 594   string(TOUPPER ${module_name} module_upper)
 595   set(FOUND_VAR PY_${module_upper}_FOUND)
 596
 597   execute_process(COMMAND "${PYTHON_EXECUTABLE}" "-c" "import ${module}"
 598     RESULT_VARIABLE status
 599     ERROR_QUIET)
 600
 601   if(status)
 602     set(${FOUND_VAR} 0 PARENT_SCOPE)
 603     message(STATUS "Could NOT find Python module ${module}")
 604   else()
 605     set(${FOUND_VAR} 1 PARENT_SCOPE)
 606     message(STATUS "Found Python module ${module}")
 607   endif()
 608 endfunction()
 609
 610 set (PYTHON_MODULES
 611   pygments
 612   # Some systems still don't have pygments.lexers.c_cpp which was introduced in
 613   # version 2.0 in 2014...
 614   pygments.lexers.c_cpp
 615   yaml
 616   )
 617 foreach(module ${PYTHON_MODULES})
 618   find_python_module(${module})
 619 endforeach()
 620
 621 if(PY_PYGMENTS_FOUND AND PY_PYGMENTS_LEXERS_C_CPP_FOUND AND PY_YAML_FOUND)
 622   set (LLVM_HAVE_OPT_VIEWER_MODULES 1)
 623 else()
 624   set (LLVM_HAVE_OPT_VIEWER_MODULES 0)
 625 endif()