reference, declarationdefinition
definition → references, declarations, derived classes, virtual overrides
reference to multiple definitions → definitions
unreferenced
    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
  564
  565
  566
  567
  568
  569
  570
  571
  572
  573
  574
  575
  576
  577
  578
  579
  580
  581
  582
  583
  584
  585
  586
  587
  588
  589
  590
  591
  592
  593
  594
  595
  596
  597
  598
  599
  600
  601
  602
  603
  604
  605
  606
  607
  608
  609
  610
  611
  612
  613
  614
  615
  616
  617
  618
  619
  620
  621
  622
  623
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(CheckCCompilerFlag)
include(CheckCXXSourceCompiles)
include(TestBigEndian)

include(CheckCompilerVersion)
include(HandleLLVMStdlib)

if( UNIX AND NOT (BEOS OR HAIKU) )
  # 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(fcntl.h HAVE_FCNTL_H)
check_include_file(inttypes.h HAVE_INTTYPES_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/types.h HAVE_SYS_TYPES_H)
check_include_file(sys/uio.h HAVE_SYS_UIO_H)
check_include_file(termios.h HAVE_TERMIOS_H)
check_include_file(unistd.h HAVE_UNISTD_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(histedit.h HAVE_HISTEDIT_H)
check_include_file(CrashReporterClient.h HAVE_CRASHREPORTERCLIENT_H)
if(APPLE)
  include(CheckCSourceCompiles)
  CHECK_C_SOURCE_COMPILES("
     static const char *__crashreporter_info__ = 0;
     asm(\".desc ___crashreporter_info__, 0x10\");
     int main() { return 0; }"
    HAVE_CRASHREPORTER_INFO)
endif()

if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
  check_include_file(linux/magic.h HAVE_LINUX_MAGIC_H)
  if(NOT HAVE_LINUX_MAGIC_H)
    # older kernels use split files
    check_include_file(linux/nfs_fs.h HAVE_LINUX_NFS_FS_H)
    check_include_file(linux/smb.h HAVE_LINUX_SMB_H)
  endif()
endif()

# 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)
endif()

if(HAVE_LIBPTHREAD)
  # We want to find pthreads library and at the moment we do want to
  # have it reported as '-l<lib>' instead of '-pthread'.
  # TODO: switch to -pthread once the rest of the build system can deal with it.
  set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
  set(THREADS_HAVE_PTHREAD_ARG Off)
  find_package(Threads REQUIRED)
  set(LLVM_PTHREAD_LIB ${CMAKE_THREAD_LIBS_INIT})
endif()

# Don't look for these libraries on Windows. Also don't look for them if we're
# using MSan, since uninstrumented third party code may call MSan interceptors
# like strlen, leading to false positives.
if( NOT PURE_WINDOWS AND NOT LLVM_USE_SANITIZER MATCHES "Memory.*")
  if (LLVM_ENABLE_ZLIB)
    check_library_exists(z compress2 "" HAVE_LIBZ)
  else()
    set(HAVE_LIBZ 0)
  endif()
  # Skip libedit if using ASan as it contains memory leaks.
  if (LLVM_ENABLE_LIBEDIT AND HAVE_HISTEDIT_H AND NOT LLVM_USE_SANITIZER MATCHES ".*Address.*")
    check_library_exists(edit el_init "" HAVE_LIBEDIT)
  else()
    set(HAVE_LIBEDIT 0)
  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()

  find_library(ICONV_LIBRARY_PATH NAMES iconv libiconv libiconv-2 c)
  set(LLVM_LIBXML2_ENABLED 0)
  set(LIBXML2_FOUND 0)
  if((LLVM_ENABLE_LIBXML2) AND (CMAKE_SYSTEM_NAME MATCHES "Linux") AND (ICONV_LIBRARY_PATH))
    find_package(LibXml2)
    if (LIBXML2_FOUND)
      set(LLVM_LIBXML2_ENABLED 1)
      include_directories(${LIBXML2_INCLUDE_DIR})
      set(LIBXML2_LIBS "xml2")
    endif()
  endif()
endif()

check_library_exists(xar xar_open "" HAVE_LIBXAR)
if(HAVE_LIBXAR)
  set(XAR_LIB xar)
endif()

# function checks
check_symbol_exists(arc4random "stdlib.h" HAVE_DECL_ARC4RANDOM)
find_package(Backtrace)
set(HAVE_BACKTRACE ${Backtrace_FOUND})
set(BACKTRACE_HEADER ${Backtrace_HEADER})

# Prevent check_symbol_exists from using API that is not supported for a given
# deployment target.
check_c_compiler_flag("-Werror=unguarded-availability-new" "C_SUPPORTS_WERROR_UNGUARDED_AVAILABILITY_NEW")
if(C_SUPPORTS_WERROR_UNGUARDED_AVAILABILITY_NEW)
  set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -Werror=unguarded-availability-new")
endif()

check_symbol_exists(_Unwind_Backtrace "unwind.h" HAVE__UNWIND_BACKTRACE)
check_symbol_exists(getpagesize unistd.h HAVE_GETPAGESIZE)
check_symbol_exists(sysconf unistd.h HAVE_SYSCONF)
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)
check_symbol_exists(posix_fallocate fcntl.h HAVE_POSIX_FALLOCATE)
# AddressSanitizer conflicts with lib/Support/Unix/Signals.inc
# Avoid sigaltstack on Apple platforms, where backtrace() cannot handle it
# (rdar://7089625) and _Unwind_Backtrace is unusable because it cannot unwind
# past the signal handler after an assertion failure (rdar://29866587).
if( HAVE_SIGNAL_H AND NOT LLVM_USE_SANITIZER MATCHES ".*Address.*" AND NOT APPLE )
  check_symbol_exists(sigaltstack signal.h HAVE_SIGALTSTACK)
endif()
if( HAVE_SYS_UIO_H )
  check_symbol_exists(writev sys/uio.h HAVE_WRITEV)
endif()
set(CMAKE_REQUIRED_DEFINITIONS "-D_LARGEFILE64_SOURCE")
check_symbol_exists(lseek64 "sys/types.h;unistd.h" HAVE_LSEEK64)
set(CMAKE_REQUIRED_DEFINITIONS "")
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(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(strtoll stdlib.h HAVE_STRTOLL)
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(dlopen dlfcn.h HAVE_DLOPEN)
  check_symbol_exists(dladdr dlfcn.h HAVE_DLADDR)
  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_definitions( -D_GNU_SOURCE )
endif()
# This check requires _GNU_SOURCE
if(HAVE_LIBPTHREAD)
  check_library_exists(pthread pthread_getname_np "" HAVE_PTHREAD_GETNAME_NP)
  check_library_exists(pthread pthread_setname_np "" HAVE_PTHREAD_SETNAME_NP)
elseif(PTHREAD_IN_LIBC)
  check_library_exists(c pthread_getname_np "" HAVE_PTHREAD_GETNAME_NP)
  check_library_exists(c pthread_setname_np "" HAVE_PTHREAD_SETNAME_NP)
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)
  check_cxx_compiler_flag("-fno-pie" SUPPORTS_NO_PIE_FLAG)
  if(SUPPORTS_NO_PIE_FLAG)
    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fno-pie")
  endif()
endif()

check_cxx_compiler_flag("-Wvariadic-macros" SUPPORTS_VARIADIC_MACROS_FLAG)
check_cxx_compiler_flag("-Wgnu-zero-variadic-macro-arguments"
                        SUPPORTS_GNU_ZERO_VARIADIC_MACRO_ARGUMENTS_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 ${PROJECT_SOURCE_DIR}/lib/Target/${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 ${PROJECT_SOURCE_DIR}/lib/Target/${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()

  option(LLVM_ENABLE_DIA_SDK "Use MSVC DIA SDK for debugging if available."
                             ${HAVE_DIA_SDK})

  if(LLVM_ENABLE_DIA_SDK AND NOT HAVE_DIA_SDK)
    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.")
  endif()
else()
  set(LLVM_ENABLE_DIA_SDK 0)
endif( MSVC )

# 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()

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 search.")
      set(LLVM_DOXYGEN_SEARCH_MAPPINGS "" CACHE STRING "Doxygen Search Mappings")
    endif()
  endif()
else()
  message(STATUS "Doxygen 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 ${PROJECT_SOURCE_DIR}/bindings/go/conftest.go
                    RESULT_VARIABLE GO_CONFTEST)
    if(GO_CONFTEST STREQUAL "0")
      set(LLVM_BINDINGS "${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(CMAKE_HOST_APPLE AND APPLE)
  if(NOT CMAKE_XCRUN)
    find_program(CMAKE_XCRUN NAMES xcrun)
  endif()
  if(CMAKE_XCRUN)
    execute_process(COMMAND ${CMAKE_XCRUN} -find ld
      OUTPUT_VARIABLE LD64_EXECUTABLE
      OUTPUT_STRIP_TRAILING_WHITESPACE)
  else()
    find_program(LD64_EXECUTABLE NAMES ld DOC "The ld64 linker")
  endif()

  if(LD64_EXECUTABLE)
    set(LD64_EXECUTABLE ${LD64_EXECUTABLE} CACHE PATH "ld64 executable")
    message(STATUS "Found ld64 - ${LD64_EXECUTABLE}")
  endif()
endif()

# Keep the version requirements in sync with bindings/ocaml/README.txt.
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")

        set(LLVM_OCAML_INSTALL_PATH "${OCAML_STDLIB_PATH}" CACHE STRING
            "Install directory for LLVM OCaml packages")
      else()
        message(STATUS "OCaml bindings disabled, need ctypes >=0.4.")
      endif()
    endif()
  endif()
endif()

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