llvm.org GIT mirror llvm / release_37 cmake / config-ix.cmake
release_37

Tree @release_37 (Download .tar.gz)

config-ix.cmake @release_37raw · history · blame

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
if( WIN32 AND NOT CYGWIN )
  # We consider Cygwin as another Unix
  set(PURE_WINDOWS 1)
endif()

include(CheckIncludeFile)
include(CheckIncludeFileCXX)
include(CheckLibraryExists)
include(CheckSymbolExists)
include(CheckFunctionExists)
include(CheckCXXSourceCompiles)
include(TestBigEndian)

include(HandleLLVMStdlib)

if( UNIX AND NOT BEOS )
  # Used by check_symbol_exists:
  set(CMAKE_REQUIRED_LIBRARIES m)
endif()
# x86_64 FreeBSD 9.2 requires libcxxrt to be specified explicitly.
if( CMAKE_SYSTEM MATCHES "FreeBSD-9.2-RELEASE" AND
    CMAKE_SIZEOF_VOID_P EQUAL 8 )
  list(APPEND CMAKE_REQUIRED_LIBRARIES "cxxrt")
endif()

# Helper macros and functions
macro(add_cxx_include result files)
  set(${result} "")
  foreach (file_name ${files})
     set(${result} "${${result}}#include<${file_name}>\n")
  endforeach()
endmacro(add_cxx_include files result)

function(check_type_exists type files variable)
  add_cxx_include(includes "${files}")
  CHECK_CXX_SOURCE_COMPILES("
    ${includes} ${type} typeVar;
    int main() {
        return 0;
    }
    " ${variable})
endfunction()

# include checks
check_include_file(dirent.h HAVE_DIRENT_H)
check_include_file(dlfcn.h HAVE_DLFCN_H)
check_include_file(errno.h HAVE_ERRNO_H)
check_include_file(execinfo.h HAVE_EXECINFO_H)
check_include_file(fcntl.h HAVE_FCNTL_H)
check_include_file(inttypes.h HAVE_INTTYPES_H)
check_include_file(limits.h HAVE_LIMITS_H)
check_include_file(link.h HAVE_LINK_H)
check_include_file(malloc.h HAVE_MALLOC_H)
check_include_file(malloc/malloc.h HAVE_MALLOC_MALLOC_H)
check_include_file(ndir.h HAVE_NDIR_H)
if( NOT PURE_WINDOWS )
  check_include_file(pthread.h HAVE_PTHREAD_H)
endif()
check_include_file(signal.h HAVE_SIGNAL_H)
check_include_file(stdint.h HAVE_STDINT_H)
check_include_file(sys/dir.h HAVE_SYS_DIR_H)
check_include_file(sys/ioctl.h HAVE_SYS_IOCTL_H)
check_include_file(sys/mman.h HAVE_SYS_MMAN_H)
check_include_file(sys/ndir.h HAVE_SYS_NDIR_H)
check_include_file(sys/param.h HAVE_SYS_PARAM_H)
check_include_file(sys/resource.h HAVE_SYS_RESOURCE_H)
check_include_file(sys/stat.h HAVE_SYS_STAT_H)
check_include_file(sys/time.h HAVE_SYS_TIME_H)
check_include_file(sys/uio.h HAVE_SYS_UIO_H)
check_include_file(sys/wait.h HAVE_SYS_WAIT_H)
check_include_file(termios.h HAVE_TERMIOS_H)
check_include_file(unistd.h HAVE_UNISTD_H)
check_include_file(utime.h HAVE_UTIME_H)
check_include_file(valgrind/valgrind.h HAVE_VALGRIND_VALGRIND_H)
check_include_file(zlib.h HAVE_ZLIB_H)
check_include_file(fenv.h HAVE_FENV_H)
check_symbol_exists(FE_ALL_EXCEPT "fenv.h" HAVE_DECL_FE_ALL_EXCEPT)
check_symbol_exists(FE_INEXACT "fenv.h" HAVE_DECL_FE_INEXACT)

check_include_file(mach/mach.h HAVE_MACH_MACH_H)
check_include_file(mach-o/dyld.h HAVE_MACH_O_DYLD_H)
check_include_file(histedit.h HAVE_HISTEDIT_H)

# size_t must be defined before including cxxabi.h on FreeBSD 10.0.
check_cxx_source_compiles("
#include <stddef.h>
#include <cxxabi.h>
int main() { return 0; }
" HAVE_CXXABI_H)

# library checks
if( NOT PURE_WINDOWS )
  check_library_exists(pthread pthread_create "" HAVE_LIBPTHREAD)
  if (HAVE_LIBPTHREAD)
    check_library_exists(pthread pthread_getspecific "" HAVE_PTHREAD_GETSPECIFIC)
    check_library_exists(pthread pthread_rwlock_init "" HAVE_PTHREAD_RWLOCK_INIT)
    check_library_exists(pthread pthread_mutex_lock "" HAVE_PTHREAD_MUTEX_LOCK)
  else()
    # this could be Android
    check_library_exists(c pthread_create "" PTHREAD_IN_LIBC)
    if (PTHREAD_IN_LIBC)
      check_library_exists(c pthread_getspecific "" HAVE_PTHREAD_GETSPECIFIC)
      check_library_exists(c pthread_rwlock_init "" HAVE_PTHREAD_RWLOCK_INIT)
      check_library_exists(c pthread_mutex_lock "" HAVE_PTHREAD_MUTEX_LOCK)
    endif()
  endif()
  check_library_exists(dl dlopen "" HAVE_LIBDL)
  check_library_exists(rt clock_gettime "" HAVE_LIBRT)
  if (LLVM_ENABLE_ZLIB)
    check_library_exists(z compress2 "" HAVE_LIBZ)
  else()
    set(HAVE_LIBZ 0)
  endif()
  if (HAVE_HISTEDIT_H)
    check_library_exists(edit el_init "" HAVE_LIBEDIT)
  endif()
  if(LLVM_ENABLE_TERMINFO)
    set(HAVE_TERMINFO 0)
    foreach(library tinfo terminfo curses ncurses ncursesw)
      string(TOUPPER ${library} library_suffix)
      check_library_exists(${library} setupterm "" HAVE_TERMINFO_${library_suffix})
      if(HAVE_TERMINFO_${library_suffix})
        set(HAVE_TERMINFO 1)
        set(TERMINFO_LIBS "${library}")
        break()
      endif()
    endforeach()
  else()
    set(HAVE_TERMINFO 0)
  endif()
endif()

# function checks
check_symbol_exists(arc4random "stdlib.h" HAVE_DECL_ARC4RANDOM)
check_symbol_exists(backtrace "execinfo.h" HAVE_BACKTRACE)
check_symbol_exists(getpagesize unistd.h HAVE_GETPAGESIZE)
check_symbol_exists(getrusage sys/resource.h HAVE_GETRUSAGE)
check_symbol_exists(setrlimit sys/resource.h HAVE_SETRLIMIT)
check_symbol_exists(isatty unistd.h HAVE_ISATTY)
check_symbol_exists(futimens sys/stat.h HAVE_FUTIMENS)
check_symbol_exists(futimes sys/time.h HAVE_FUTIMES)
if( HAVE_SETJMP_H )
  check_symbol_exists(longjmp setjmp.h HAVE_LONGJMP)
  check_symbol_exists(setjmp setjmp.h HAVE_SETJMP)
  check_symbol_exists(siglongjmp setjmp.h HAVE_SIGLONGJMP)
  check_symbol_exists(sigsetjmp setjmp.h HAVE_SIGSETJMP)
endif()
if( HAVE_SYS_UIO_H )
  check_symbol_exists(writev sys/uio.h HAVE_WRITEV)
endif()
check_symbol_exists(mallctl malloc_np.h HAVE_MALLCTL)
check_symbol_exists(mallinfo malloc.h HAVE_MALLINFO)
check_symbol_exists(malloc_zone_statistics malloc/malloc.h
                    HAVE_MALLOC_ZONE_STATISTICS)
check_symbol_exists(mkdtemp "stdlib.h;unistd.h" HAVE_MKDTEMP)
check_symbol_exists(mkstemp "stdlib.h;unistd.h" HAVE_MKSTEMP)
check_symbol_exists(mktemp "stdlib.h;unistd.h" HAVE_MKTEMP)
check_symbol_exists(closedir "sys/types.h;dirent.h" HAVE_CLOSEDIR)
check_symbol_exists(opendir "sys/types.h;dirent.h" HAVE_OPENDIR)
check_symbol_exists(readdir "sys/types.h;dirent.h" HAVE_READDIR)
check_symbol_exists(getcwd unistd.h HAVE_GETCWD)
check_symbol_exists(gettimeofday sys/time.h HAVE_GETTIMEOFDAY)
check_symbol_exists(getrlimit "sys/types.h;sys/time.h;sys/resource.h" HAVE_GETRLIMIT)
check_symbol_exists(posix_spawn spawn.h HAVE_POSIX_SPAWN)
check_symbol_exists(pread unistd.h HAVE_PREAD)
check_symbol_exists(realpath stdlib.h HAVE_REALPATH)
check_symbol_exists(sbrk unistd.h HAVE_SBRK)
check_symbol_exists(srand48 stdlib.h HAVE_RAND48_SRAND48)
if( HAVE_RAND48_SRAND48 )
  check_symbol_exists(lrand48 stdlib.h HAVE_RAND48_LRAND48)
  if( HAVE_RAND48_LRAND48 )
    check_symbol_exists(drand48 stdlib.h HAVE_RAND48_DRAND48)
    if( HAVE_RAND48_DRAND48 )
      set(HAVE_RAND48 1 CACHE INTERNAL "are srand48/lrand48/drand48 available?")
    endif()
  endif()
endif()
check_symbol_exists(strtoll stdlib.h HAVE_STRTOLL)
check_symbol_exists(strtoq stdlib.h HAVE_STRTOQ)
check_symbol_exists(strerror string.h HAVE_STRERROR)
check_symbol_exists(strerror_r string.h HAVE_STRERROR_R)
check_symbol_exists(strerror_s string.h HAVE_DECL_STRERROR_S)
check_symbol_exists(setenv stdlib.h HAVE_SETENV)
if( PURE_WINDOWS )
  check_symbol_exists(_chsize_s io.h HAVE__CHSIZE_S)

  check_function_exists(_alloca HAVE__ALLOCA)
  check_function_exists(__alloca HAVE___ALLOCA)
  check_function_exists(__chkstk HAVE___CHKSTK)
  check_function_exists(__chkstk_ms HAVE___CHKSTK_MS)
  check_function_exists(___chkstk HAVE____CHKSTK)
  check_function_exists(___chkstk_ms HAVE____CHKSTK_MS)

  check_function_exists(__ashldi3 HAVE___ASHLDI3)
  check_function_exists(__ashrdi3 HAVE___ASHRDI3)
  check_function_exists(__divdi3 HAVE___DIVDI3)
  check_function_exists(__fixdfdi HAVE___FIXDFDI)
  check_function_exists(__fixsfdi HAVE___FIXSFDI)
  check_function_exists(__floatdidf HAVE___FLOATDIDF)
  check_function_exists(__lshrdi3 HAVE___LSHRDI3)
  check_function_exists(__moddi3 HAVE___MODDI3)
  check_function_exists(__udivdi3 HAVE___UDIVDI3)
  check_function_exists(__umoddi3 HAVE___UMODDI3)

  check_function_exists(__main HAVE___MAIN)
  check_function_exists(__cmpdi2 HAVE___CMPDI2)
endif()
if( HAVE_DLFCN_H )
  if( HAVE_LIBDL )
    list(APPEND CMAKE_REQUIRED_LIBRARIES dl)
  endif()
  check_symbol_exists(dlerror dlfcn.h HAVE_DLERROR)
  check_symbol_exists(dlopen dlfcn.h HAVE_DLOPEN)
  if( HAVE_LIBDL )
    list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES dl)
  endif()
endif()

check_symbol_exists(__GLIBC__ stdio.h LLVM_USING_GLIBC)
if( LLVM_USING_GLIBC )
  add_llvm_definitions( -D_GNU_SOURCE )
endif()

set(headers "sys/types.h")

if (HAVE_INTTYPES_H)
  set(headers ${headers} "inttypes.h")
endif()

if (HAVE_STDINT_H)
  set(headers ${headers} "stdint.h")
endif()

check_type_exists(int64_t "${headers}" HAVE_INT64_T)
check_type_exists(uint64_t "${headers}" HAVE_UINT64_T)
check_type_exists(u_int64_t "${headers}" HAVE_U_INT64_T)

# available programs checks
function(llvm_find_program name)
  string(TOUPPER ${name} NAME)
  string(REGEX REPLACE "\\." "_" NAME ${NAME})

  find_program(LLVM_PATH_${NAME} NAMES ${ARGV})
  mark_as_advanced(LLVM_PATH_${NAME})
  if(LLVM_PATH_${NAME})
    set(HAVE_${NAME} 1 CACHE INTERNAL "Is ${name} available ?")
    mark_as_advanced(HAVE_${NAME})
  else(LLVM_PATH_${NAME})
    set(HAVE_${NAME} "" CACHE INTERNAL "Is ${name} available ?")
  endif(LLVM_PATH_${NAME})
endfunction()

if (LLVM_ENABLE_DOXYGEN)
  llvm_find_program(dot)
endif ()

if( LLVM_ENABLE_FFI )
  find_path(FFI_INCLUDE_PATH ffi.h PATHS ${FFI_INCLUDE_DIR})
  if( EXISTS "${FFI_INCLUDE_PATH}/ffi.h" )
    set(FFI_HEADER ffi.h CACHE INTERNAL "")
    set(HAVE_FFI_H 1 CACHE INTERNAL "")
  else()
    find_path(FFI_INCLUDE_PATH ffi/ffi.h PATHS ${FFI_INCLUDE_DIR})
    if( EXISTS "${FFI_INCLUDE_PATH}/ffi/ffi.h" )
      set(FFI_HEADER ffi/ffi.h CACHE INTERNAL "")
      set(HAVE_FFI_FFI_H 1 CACHE INTERNAL "")
    endif()
  endif()

  if( NOT FFI_HEADER )
    message(FATAL_ERROR "libffi includes are not found.")
  endif()

  find_library(FFI_LIBRARY_PATH ffi PATHS ${FFI_LIBRARY_DIR})
  if( NOT FFI_LIBRARY_PATH )
    message(FATAL_ERROR "libffi is not found.")
  endif()

  list(APPEND CMAKE_REQUIRED_LIBRARIES ${FFI_LIBRARY_PATH})
  list(APPEND CMAKE_REQUIRED_INCLUDES ${FFI_INCLUDE_PATH})
  check_symbol_exists(ffi_call ${FFI_HEADER} HAVE_FFI_CALL)
  list(REMOVE_ITEM CMAKE_REQUIRED_INCLUDES ${FFI_INCLUDE_PATH})
  list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES ${FFI_LIBRARY_PATH})
else()
  unset(HAVE_FFI_FFI_H CACHE)
  unset(HAVE_FFI_H CACHE)
  unset(HAVE_FFI_CALL CACHE)
endif( LLVM_ENABLE_FFI )

# Define LLVM_HAS_ATOMICS if gcc or MSVC atomic builtins are supported.
include(CheckAtomic)

if( LLVM_ENABLE_PIC )
  set(ENABLE_PIC 1)
else()
  set(ENABLE_PIC 0)
endif()

check_cxx_compiler_flag("-Wno-variadic-macros" SUPPORTS_NO_VARIADIC_MACROS_FLAG)

set(USE_NO_MAYBE_UNINITIALIZED 0)
set(USE_NO_UNINITIALIZED 0)

# Disable gcc's potentially uninitialized use analysis as it presents lots of
# false positives.
if (CMAKE_COMPILER_IS_GNUCXX)
  check_cxx_compiler_flag("-Wmaybe-uninitialized" HAS_MAYBE_UNINITIALIZED)
  if (HAS_MAYBE_UNINITIALIZED)
    set(USE_NO_MAYBE_UNINITIALIZED 1)
  else()
    # Only recent versions of gcc make the distinction between -Wuninitialized
    # and -Wmaybe-uninitialized. If -Wmaybe-uninitialized isn't supported, just
    # turn off all uninitialized use warnings.
    check_cxx_compiler_flag("-Wuninitialized" HAS_UNINITIALIZED)
    set(USE_NO_UNINITIALIZED ${HAS_UNINITIALIZED})
  endif()
endif()

# By default, we target the host, but this can be overridden at CMake
# invocation time.
include(GetHostTriple)
get_host_triple(LLVM_INFERRED_HOST_TRIPLE)

set(LLVM_HOST_TRIPLE "${LLVM_INFERRED_HOST_TRIPLE}" CACHE STRING
    "Host on which LLVM binaries will run")

# Determine the native architecture.
string(TOLOWER "${LLVM_TARGET_ARCH}" LLVM_NATIVE_ARCH)
if( LLVM_NATIVE_ARCH STREQUAL "host" )
  string(REGEX MATCH "^[^-]*" LLVM_NATIVE_ARCH ${LLVM_HOST_TRIPLE})
endif ()

if (LLVM_NATIVE_ARCH MATCHES "i[2-6]86")
  set(LLVM_NATIVE_ARCH X86)
elseif (LLVM_NATIVE_ARCH STREQUAL "x86")
  set(LLVM_NATIVE_ARCH X86)
elseif (LLVM_NATIVE_ARCH STREQUAL "amd64")
  set(LLVM_NATIVE_ARCH X86)
elseif (LLVM_NATIVE_ARCH STREQUAL "x86_64")
  set(LLVM_NATIVE_ARCH X86)
elseif (LLVM_NATIVE_ARCH MATCHES "sparc")
  set(LLVM_NATIVE_ARCH Sparc)
elseif (LLVM_NATIVE_ARCH MATCHES "powerpc")
  set(LLVM_NATIVE_ARCH PowerPC)
elseif (LLVM_NATIVE_ARCH MATCHES "aarch64")
  set(LLVM_NATIVE_ARCH AArch64)
elseif (LLVM_NATIVE_ARCH MATCHES "arm64")
  set(LLVM_NATIVE_ARCH AArch64)
elseif (LLVM_NATIVE_ARCH MATCHES "arm")
  set(LLVM_NATIVE_ARCH ARM)
elseif (LLVM_NATIVE_ARCH MATCHES "mips")
  set(LLVM_NATIVE_ARCH Mips)
elseif (LLVM_NATIVE_ARCH MATCHES "xcore")
  set(LLVM_NATIVE_ARCH XCore)
elseif (LLVM_NATIVE_ARCH MATCHES "msp430")
  set(LLVM_NATIVE_ARCH MSP430)
elseif (LLVM_NATIVE_ARCH MATCHES "hexagon")
  set(LLVM_NATIVE_ARCH Hexagon)
elseif (LLVM_NATIVE_ARCH MATCHES "s390x")
  set(LLVM_NATIVE_ARCH SystemZ)
elseif (LLVM_NATIVE_ARCH MATCHES "wasm32")
  set(LLVM_NATIVE_ARCH WebAssembly)
elseif (LLVM_NATIVE_ARCH MATCHES "wasm64")
  set(LLVM_NATIVE_ARCH WebAssembly)
else ()
  message(FATAL_ERROR "Unknown architecture ${LLVM_NATIVE_ARCH}")
endif ()

# If build targets includes "host", then replace with native architecture.
list(FIND LLVM_TARGETS_TO_BUILD "host" idx)
if( NOT idx LESS 0 )
  list(REMOVE_AT LLVM_TARGETS_TO_BUILD ${idx})
  list(APPEND LLVM_TARGETS_TO_BUILD ${LLVM_NATIVE_ARCH})
  list(REMOVE_DUPLICATES LLVM_TARGETS_TO_BUILD)
endif()

list(FIND LLVM_TARGETS_TO_BUILD ${LLVM_NATIVE_ARCH} NATIVE_ARCH_IDX)
if (NATIVE_ARCH_IDX EQUAL -1)
  message(STATUS
    "Native target ${LLVM_NATIVE_ARCH} is not selected; lli will not JIT code")
else ()
  message(STATUS "Native target architecture is ${LLVM_NATIVE_ARCH}")
  set(LLVM_NATIVE_TARGET LLVMInitialize${LLVM_NATIVE_ARCH}Target)
  set(LLVM_NATIVE_TARGETINFO LLVMInitialize${LLVM_NATIVE_ARCH}TargetInfo)
  set(LLVM_NATIVE_TARGETMC LLVMInitialize${LLVM_NATIVE_ARCH}TargetMC)
  set(LLVM_NATIVE_ASMPRINTER LLVMInitialize${LLVM_NATIVE_ARCH}AsmPrinter)

  # We don't have an ASM parser for all architectures yet.
  if (EXISTS ${CMAKE_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/AsmParser/CMakeLists.txt)
    set(LLVM_NATIVE_ASMPARSER LLVMInitialize${LLVM_NATIVE_ARCH}AsmParser)
  endif ()

  # We don't have an disassembler for all architectures yet.
  if (EXISTS ${CMAKE_SOURCE_DIR}/lib/Target/${LLVM_NATIVE_ARCH}/Disassembler/CMakeLists.txt)
    set(LLVM_NATIVE_DISASSEMBLER LLVMInitialize${LLVM_NATIVE_ARCH}Disassembler)
  endif ()
endif ()

if( MINGW )
  set(HAVE_LIBPSAPI 1)
  set(HAVE_LIBSHELL32 1)
  # TODO: Check existence of libraries.
  #   include(CheckLibraryExists)
endif( MINGW )

if (NOT HAVE_STRTOLL)
  # Use _strtoi64 if strtoll is not available.
  check_symbol_exists(_strtoi64 stdlib.h have_strtoi64)
  if (have_strtoi64)
    set(HAVE_STRTOLL 1)
    set(strtoll "_strtoi64")
    set(strtoull "_strtoui64")
  endif ()
endif ()

if( MSVC )
  set(SHLIBEXT ".lib")
  set(stricmp "_stricmp")
  set(strdup "_strdup")

  # See if the DIA SDK is available and usable.
  set(MSVC_DIA_SDK_DIR "$ENV{VSINSTALLDIR}DIA SDK")

  # Due to a bug in MSVC 2013's installation software, it is possible
  # for MSVC 2013 to write the DIA SDK into the Visual Studio 2012
  # install directory.  If this happens, the installation is corrupt
  # and there's nothing we can do.  It happens with enough frequency
  # though that we should handle it.  We do so by simply checking that
  # the DIA SDK folder exists.  Should this happen you will need to
  # uninstall VS 2012 and then re-install VS 2013.
  if (IS_DIRECTORY ${MSVC_DIA_SDK_DIR})
    set(HAVE_DIA_SDK 1)
  else()
    set(HAVE_DIA_SDK 0)
  endif()
else()
  set(HAVE_DIA_SDK 0)
endif( MSVC )

if( PURE_WINDOWS )
  CHECK_CXX_SOURCE_COMPILES("
    #include <windows.h>
    #include <imagehlp.h>
    extern \"C\" void foo(PENUMLOADED_MODULES_CALLBACK);
    extern \"C\" void foo(BOOL(CALLBACK*)(PCSTR,ULONG_PTR,ULONG,PVOID));
    int main(){return 0;}"
    HAVE_ELMCB_PCSTR)
  if( HAVE_ELMCB_PCSTR )
    set(WIN32_ELMCB_PCSTR "PCSTR")
  else()
    set(WIN32_ELMCB_PCSTR "PSTR")
  endif()
endif( PURE_WINDOWS )

# FIXME: Signal handler return type, currently hardcoded to 'void'
set(RETSIGTYPE void)

if( LLVM_ENABLE_THREADS )
  # Check if threading primitives aren't supported on this platform
  if( NOT HAVE_PTHREAD_H AND NOT WIN32 )
    set(LLVM_ENABLE_THREADS 0)
  endif()
endif()

if( LLVM_ENABLE_THREADS )
  message(STATUS "Threads enabled.")
else( LLVM_ENABLE_THREADS )
  message(STATUS "Threads disabled.")
endif()

if (LLVM_ENABLE_ZLIB )
  # Check if zlib is available in the system.
  if ( NOT HAVE_ZLIB_H OR NOT HAVE_LIBZ )
    set(LLVM_ENABLE_ZLIB 0)
  endif()
endif()

set(LLVM_PREFIX ${CMAKE_INSTALL_PREFIX})

if (LLVM_ENABLE_DOXYGEN)
  message(STATUS "Doxygen enabled.")
  find_package(Doxygen REQUIRED)

  if (DOXYGEN_FOUND)
    # If we find doxygen and we want to enable doxygen by default create a
    # global aggregate doxygen target for generating llvm and any/all
    # subprojects doxygen documentation.
    if (LLVM_BUILD_DOCS)
      add_custom_target(doxygen ALL)
    endif()

    option(LLVM_DOXYGEN_EXTERNAL_SEARCH "Enable doxygen external search." OFF)
    if (LLVM_DOXYGEN_EXTERNAL_SEARCH)
      set(LLVM_DOXYGEN_SEARCHENGINE_URL "" CACHE STRING "URL to use for external searhc.")
      set(LLVM_DOXYGEN_SEARCH_MAPPINGS "" CACHE STRING "Doxygen Search Mappings")
    endif()
  endif()
else()
  message(STATUS "Doxygen disabled.")
endif()

if (LLVM_ENABLE_SPHINX)
  message(STATUS "Sphinx enabled.")
  find_package(Sphinx REQUIRED)
  if (LLVM_BUILD_DOCS)
    add_custom_target(sphinx ALL)
  endif()
else()
  message(STATUS "Sphinx disabled.")
endif()

set(LLVM_BINDINGS "")
if(WIN32)
  message(STATUS "Go bindings disabled.")
else()
  find_program(GO_EXECUTABLE NAMES go DOC "go executable")
  if(GO_EXECUTABLE STREQUAL "GO_EXECUTABLE-NOTFOUND")
    message(STATUS "Go bindings disabled.")
  else()
    execute_process(COMMAND ${GO_EXECUTABLE} run ${CMAKE_SOURCE_DIR}/bindings/go/conftest.go
                    RESULT_VARIABLE GO_CONFTEST)
    if(GO_CONFTEST STREQUAL "0")
      set(LLVM_BINDINGS "${LLVM_BINDINGS} go")
      message(STATUS "Go bindings enabled.")
    else()
      message(STATUS "Go bindings disabled, need at least Go 1.2.")
    endif()
  endif()
endif()

find_program(GOLD_EXECUTABLE NAMES ${LLVM_DEFAULT_TARGET_TRIPLE}-ld.gold ld.gold ${LLVM_DEFAULT_TARGET_TRIPLE}-ld ld DOC "The gold linker")
set(LLVM_BINUTILS_INCDIR "" CACHE PATH
	"PATH to binutils/include containing plugin-api.h for gold plugin.")

if(APPLE)
  find_program(LD64_EXECUTABLE NAMES ld DOC "The ld64 linker")
endif()

include(FindOCaml)
include(AddOCaml)
if(WIN32)
  message(STATUS "OCaml bindings disabled.")
else()
  find_package(OCaml)
  if( NOT OCAML_FOUND )
    message(STATUS "OCaml bindings disabled.")
  else()
    if( OCAML_VERSION VERSION_LESS "4.00.0" )
      message(STATUS "OCaml bindings disabled, need OCaml >=4.00.0.")
    else()
      find_ocamlfind_package(ctypes VERSION 0.4 OPTIONAL)
      if( HAVE_OCAML_CTYPES )
        message(STATUS "OCaml bindings enabled.")
        find_ocamlfind_package(oUnit VERSION 2 OPTIONAL)
        set(LLVM_BINDINGS "${LLVM_BINDINGS} ocaml")
      else()
        message(STATUS "OCaml bindings disabled, need ctypes >=0.4.")
      endif()
    endif()
  endif()
endif()

string(REPLACE " " ";" LLVM_BINDINGS_LIST "${LLVM_BINDINGS}")