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
  624
  625
  626
  627
  628
  629
  630
  631
  632
  633
  634
  635
  636
  637
  638
  639
  640
  641
  642
  643
  644
  645
  646
  647
  648
  649
  650
  651
  652
  653
  654
  655
  656
  657
  658
  659
  660
  661
  662
  663
  664
  665
  666
  667
  668
  669
  670
  671
  672
  673
  674
  675
  676
  677
  678
  679
  680
  681
  682
  683
  684
  685
  686
  687
  688
  689
  690
  691
  692
  693
  694
  695
  696
  697
  698
  699
  700
  701
  702
  703
  704
  705
  706
  707
  708
  709
  710
  711
  712
  713
  714
  715
  716
  717
  718
  719
  720
  721
  722
  723
  724
  725
  726
  727
  728
  729
  730
  731
  732
  733
  734
  735
  736
  737
  738
  739
  740
  741
  742
  743
  744
  745
  746
  747
  748
  749
  750
  751
  752
  753
  754
  755
  756
  757
  758
  759
  760
  761
  762
  763
  764
  765
  766
  767
  768
  769
  770
  771
  772
  773
  774
  775
  776
  777
  778
  779
  780
  781
  782
  783
  784
  785
  786
  787
  788
  789
  790
  791
  792
  793
  794
  795
  796
  797
  798
  799
  800
  801
  802
  803
  804
  805
  806
  807
  808
  809
  810
  811
  812
  813
  814
  815
  816
  817
  818
  819
  820
  821
  822
  823
  824
  825
  826
  827
  828
  829
  830
  831
  832
  833
  834
  835
  836
  837
  838
  839
  840
  841
  842
  843
  844
  845
  846
  847
  848
  849
  850
  851
  852
  853
  854
  855
  856
  857
  858
  859
  860
  861
  862
  863
  864
  865
  866
  867
  868
  869
  870
  871
  872
  873
  874
  875
  876
  877
  878
  879
  880
  881
  882
  883
  884
  885
  886
  887
  888
  889
  890
  891
  892
  893
  894
  895
  896
  897
  898
  899
  900
  901
  902
  903
  904
  905
  906
  907
  908
  909
  910
  911
  912
  913
  914
  915
  916
  917
  918
  919
  920
  921
  922
  923
  924
  925
  926
  927
  928
  929
  930
  931
  932
  933
  934
  935
  936
  937
  938
  939
  940
  941
  942
  943
  944
  945
  946
  947
  948
  949
  950
  951
  952
  953
  954
  955
  956
  957
  958
  959
  960
  961
  962
  963
  964
  965
  966
  967
  968
  969
  970
  971
  972
  973
  974
  975
  976
  977
  978
  979
  980
  981
  982
  983
  984
  985
  986
  987
  988
  989
  990
  991
  992
  993
  994
  995
  996
  997
  998
  999
 1000
 1001
 1002
 1003
 1004
 1005
 1006
 1007
 1008
 1009
 1010
 1011
 1012
 1013
 1014
# See docs/CMake.html for instructions about how to build LLVM with CMake.

cmake_minimum_required(VERSION 3.4.3)

cmake_policy(SET CMP0022 NEW)

cmake_policy(SET CMP0048 NEW)

# CMake 3.1 and higher include generator expressions of the form
# $<TARGETLIB:obj> in the SOURCES property.  These need to be
# stripped everywhere that access the SOURCES property, so we just
# defer to the OLD behavior of not including generator expressions
# in the output for now.
cmake_policy(SET CMP0051 OLD)

cmake_policy(SET CMP0056 NEW)

cmake_policy(SET CMP0057 NEW)

if(NOT DEFINED LLVM_VERSION_MAJOR)
  set(LLVM_VERSION_MAJOR 6)
endif()
if(NOT DEFINED LLVM_VERSION_MINOR)
  set(LLVM_VERSION_MINOR 0)
endif()
if(NOT DEFINED LLVM_VERSION_PATCH)
  set(LLVM_VERSION_PATCH 0)
endif()
if(NOT DEFINED LLVM_VERSION_SUFFIX)
  set(LLVM_VERSION_SUFFIX svn)
endif()

if (NOT PACKAGE_VERSION)
  set(PACKAGE_VERSION
    "${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}${LLVM_VERSION_SUFFIX}")
endif()

if ((CMAKE_GENERATOR MATCHES "Visual Studio") AND (CMAKE_GENERATOR_TOOLSET STREQUAL ""))
  message(WARNING "Visual Studio generators use the x86 host compiler by "
                  "default, even for 64-bit targets. This can result in linker "
                  "instability and out of memory errors. To use the 64-bit "
                  "host compiler, pass -Thost=x64 on the CMake command line.")
endif()

project(LLVM
  VERSION ${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}
  LANGUAGES C CXX ASM)

if (NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
  message(STATUS "No build type selected, default to Debug")
  set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "Build type (default Debug)" FORCE)
endif()

# This should only apply if you are both on an Apple host, and targeting Apple.
if(CMAKE_HOST_APPLE AND APPLE)
  # if CMAKE_LIBTOOL is not set, try and find it with xcrun or find_program
  if(NOT CMAKE_LIBTOOL)
    if(NOT CMAKE_XCRUN)
      find_program(CMAKE_XCRUN NAMES xcrun)
    endif()
    if(CMAKE_XCRUN)
      execute_process(COMMAND ${CMAKE_XCRUN} -find libtool
        OUTPUT_VARIABLE CMAKE_LIBTOOL
        OUTPUT_STRIP_TRAILING_WHITESPACE)
    endif()

    if(NOT CMAKE_LIBTOOL OR NOT EXISTS CMAKE_LIBTOOL)
      find_program(CMAKE_LIBTOOL NAMES libtool)
    endif()
  endif()

  get_property(languages GLOBAL PROPERTY ENABLED_LANGUAGES)
  if(CMAKE_LIBTOOL)
    set(CMAKE_LIBTOOL ${CMAKE_LIBTOOL} CACHE PATH "libtool executable")
    message(STATUS "Found libtool - ${CMAKE_LIBTOOL}")

    execute_process(COMMAND ${CMAKE_LIBTOOL} -V
      OUTPUT_VARIABLE LIBTOOL_V_OUTPUT
      OUTPUT_STRIP_TRAILING_WHITESPACE)
    if("${LIBTOOL_V_OUTPUT}" MATCHES ".*cctools-([0-9.]+).*")
      string(REGEX REPLACE ".*cctools-([0-9.]+).*" "\\1" LIBTOOL_VERSION
        ${LIBTOOL_V_OUTPUT})
      if(NOT LIBTOOL_VERSION VERSION_LESS "862")
        set(LIBTOOL_NO_WARNING_FLAG "-no_warning_for_no_symbols")
      endif()
    endif()

    foreach(lang ${languages})
      set(CMAKE_${lang}_CREATE_STATIC_LIBRARY
        "${CMAKE_LIBTOOL} -static ${LIBTOOL_NO_WARNING_FLAG} -o <TARGET> \
        <LINK_FLAGS> <OBJECTS> ")
    endforeach()
  endif()

  # If DYLD_LIBRARY_PATH is set we need to set it on archiver commands
  if(DYLD_LIBRARY_PATH)
    set(dyld_envar "DYLD_LIBRARY_PATH=${DYLD_LIBRARY_PATH}")
    foreach(lang ${languages})
      foreach(cmd ${CMAKE_${lang}_CREATE_STATIC_LIBRARY})
        list(APPEND CMAKE_${lang}_CREATE_STATIC_LIBRARY_NEW
             "${dyld_envar} ${cmd}")
      endforeach()
      set(CMAKE_${lang}_CREATE_STATIC_LIBRARY
        ${CMAKE_${lang}_CREATE_STATIC_LIBRARY_NEW})
    endforeach()
  endif()
endif()

# Side-by-side subprojects layout: automatically set the
# LLVM_EXTERNAL_${project}_SOURCE_DIR using LLVM_ALL_PROJECTS
# This allows an easy way of setting up a build directory for llvm and another
# one for llvm+clang+... using the same sources.
set(LLVM_ALL_PROJECTS "clang;libcxx;libcxxabi;lldb;compiler-rt;lld;polly")
set(LLVM_ENABLE_PROJECTS "" CACHE STRING
	"Semicolon-separated list of projects to build (${LLVM_ALL_PROJECTS}), or \"all\".")
if( LLVM_ENABLE_PROJECTS STREQUAL "all" )
  set( LLVM_ENABLE_PROJECTS ${LLVM_ALL_PROJECTS})
endif()
foreach(proj ${LLVM_ENABLE_PROJECTS})
  set(PROJ_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../${proj}")
  if(NOT EXISTS "${PROJ_DIR}" OR NOT IS_DIRECTORY "${PROJ_DIR}")
    message(FATAL_ERROR "LLVM_ENABLE_PROJECTS requests ${proj} but directory not found: ${PROJ_DIR}")
  endif()
  string(TOUPPER "${proj}" upper_proj)
  STRING(REGEX REPLACE "-" "_" upper_proj ${upper_proj})
  set(LLVM_EXTERNAL_${upper_proj}_SOURCE_DIR   "${CMAKE_CURRENT_SOURCE_DIR}/../${proj}")
  # There is a widely spread opinion that clang-tools-extra should be merged
  # into clang. The following simulates it by always enabling clang-tools-extra
  # when enabling clang.
  if (proj STREQUAL "clang")
    set(LLVM_EXTERNAL_CLANG_TOOLS_EXTRA_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../clang-tools-extra")
  endif()
endforeach()

# Build llvm with ccache if the package is present
set(LLVM_CCACHE_BUILD OFF CACHE BOOL "Set to ON for a ccache enabled build")
if(LLVM_CCACHE_BUILD)
  find_program(CCACHE_PROGRAM ccache)
  if(CCACHE_PROGRAM)
      set(LLVM_CCACHE_SIZE "" CACHE STRING "Size of ccache")
      set(LLVM_CCACHE_DIR "" CACHE STRING "Directory to keep ccached data")
      set(CCACHE_PROGRAM "CCACHE_CPP2=yes CCACHE_HASHDIR=yes ${CCACHE_PROGRAM}")
      if (LLVM_CCACHE_SIZE)
        set(CCACHE_PROGRAM "CCACHE_SIZE=${LLVM_CCACHE_SIZE} ${CCACHE_PROGRAM}")
      endif()
      if (LLVM_CCACHE_DIR)
        set(CCACHE_PROGRAM "CCACHE_DIR=${LLVM_CCACHE_DIR} ${CCACHE_PROGRAM}")
      endif()
      set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ${CCACHE_PROGRAM})
  else()
    message(FATAL_ERROR "Unable to find the program ccache. Set LLVM_CCACHE_BUILD to OFF")
  endif()
endif()

option(LLVM_DEPENDENCY_DEBUGGING "Dependency debugging mode to verify correctly expressed library dependencies (Darwin only)" OFF)

# Some features of the LLVM build may be disallowed when dependency debugging is
# enabled. In particular you cannot use ccache because we want to force compile
# operations to always happen.
if(LLVM_DEPENDENCY_DEBUGGING)
  if(NOT CMAKE_HOST_APPLE)
    message(FATAL_ERROR "Dependency debugging is only currently supported on Darwin hosts.")
  endif()
  if(LLVM_CCACHE_BUILD)
    message(FATAL_ERROR "Cannot enable dependency debugging while using ccache.")
  endif()
endif()

option(LLVM_ENABLE_DAGISEL_COV "Debug: Prints tablegen patterns that were used for selecting" OFF)
option(LLVM_ENABLE_GISEL_COV "Enable collection of GlobalISel rule coverage" OFF)
if(LLVM_ENABLE_GISEL_COV)
  set(LLVM_GISEL_COV_PREFIX "${CMAKE_BINARY_DIR}/gisel-coverage-" CACHE STRING "Provide a filename prefix to collect the GlobalISel rule coverage")
endif()

# Add path for custom modules
set(CMAKE_MODULE_PATH
  ${CMAKE_MODULE_PATH}
  "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
  "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules"
  )

# Generate a CompilationDatabase (compile_commands.json file) for our build,
# for use by clang_complete, YouCompleteMe, etc.
set(CMAKE_EXPORT_COMPILE_COMMANDS 1)

option(LLVM_INSTALL_BINUTILS_SYMLINKS
  "Install symlinks from the binutils tool names to the corresponding LLVM tools." OFF)

option(LLVM_INSTALL_UTILS "Include utility binaries in the 'install' target." OFF)

option(LLVM_INSTALL_TOOLCHAIN_ONLY "Only include toolchain files in the 'install' target." OFF)

option(LLVM_USE_FOLDERS "Enable solution folders in Visual Studio. Disable for Express versions." ON)
if ( LLVM_USE_FOLDERS )
  set_property(GLOBAL PROPERTY USE_FOLDERS ON)
endif()

include(VersionFromVCS)

option(LLVM_APPEND_VC_REV
  "Embed the version control system revision id in LLVM" ON)

set(PACKAGE_NAME LLVM)
set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
set(PACKAGE_BUGREPORT "http://llvm.org/bugs/")

set(BUG_REPORT_URL "${PACKAGE_BUGREPORT}" CACHE STRING
  "Default URL where bug reports are to be submitted.")

# Configure CPack.
set(CPACK_PACKAGE_INSTALL_DIRECTORY "LLVM")
set(CPACK_PACKAGE_VENDOR "LLVM")
set(CPACK_PACKAGE_VERSION_MAJOR ${LLVM_VERSION_MAJOR})
set(CPACK_PACKAGE_VERSION_MINOR ${LLVM_VERSION_MINOR})
set(CPACK_PACKAGE_VERSION_PATCH ${LLVM_VERSION_PATCH})
set(CPACK_PACKAGE_VERSION ${PACKAGE_VERSION})
set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE.TXT")
set(CPACK_NSIS_COMPRESSOR "/SOLID lzma \r\n SetCompressorDictSize 32")
if(WIN32 AND NOT UNIX)
  set(CPACK_PACKAGE_INSTALL_REGISTRY_KEY "LLVM")
  set(CPACK_PACKAGE_ICON "${CMAKE_CURRENT_SOURCE_DIR}\\\\cmake\\\\nsis_logo.bmp")
  set(CPACK_NSIS_MUI_ICON "${CMAKE_CURRENT_SOURCE_DIR}\\\\cmake\\\\nsis_icon.ico")
  set(CPACK_NSIS_MUI_UNIICON "${CMAKE_CURRENT_SOURCE_DIR}\\\\cmake\\\\nsis_icon.ico")
  set(CPACK_NSIS_MODIFY_PATH "ON")
  set(CPACK_NSIS_ENABLE_UNINSTALL_BEFORE_INSTALL "ON")
  set(CPACK_NSIS_EXTRA_INSTALL_COMMANDS
    "ExecWait '$INSTDIR/tools/msbuild/install.bat'")
  set(CPACK_NSIS_EXTRA_UNINSTALL_COMMANDS
    "ExecWait '$INSTDIR/tools/msbuild/uninstall.bat'")
  if( CMAKE_CL_64 )
    set(CPACK_NSIS_INSTALL_ROOT "$PROGRAMFILES64")
  endif()
endif()
include(CPack)

# Sanity check our source directory to make sure that we are not trying to
# generate an in-source build (unless on MSVC_IDE, where it is ok), and to make
# sure that we don't have any stray generated files lying around in the tree
# (which would end up getting picked up by header search, instead of the correct
# versions).
if( CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR AND NOT MSVC_IDE )
  message(FATAL_ERROR "In-source builds are not allowed.
CMake would overwrite the makefiles distributed with LLVM.
Please create a directory and run cmake from there, passing the path
to this source directory as the last argument.
This process created the file `CMakeCache.txt' and the directory `CMakeFiles'.
Please delete them.")
endif()
if( NOT CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR )
  file(GLOB_RECURSE
    tablegenned_files_on_include_dir
    "${CMAKE_CURRENT_SOURCE_DIR}/include/llvm/*.gen")
  file(GLOB_RECURSE
    tablegenned_files_on_lib_dir
    "${CMAKE_CURRENT_SOURCE_DIR}/lib/Target/*.inc")
  if( tablegenned_files_on_include_dir OR tablegenned_files_on_lib_dir)
    message(FATAL_ERROR "Apparently there is a previous in-source build,
probably as the result of running `configure' and `make' on
${CMAKE_CURRENT_SOURCE_DIR}.
This may cause problems. The suspicious files are:
${tablegenned_files_on_lib_dir}
${tablegenned_files_on_include_dir}
Please clean the source directory.")
  endif()
endif()

string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE)

if (CMAKE_BUILD_TYPE AND
    NOT uppercase_CMAKE_BUILD_TYPE MATCHES "^(DEBUG|RELEASE|RELWITHDEBINFO|MINSIZEREL)$")
  message(FATAL_ERROR "Invalid value for CMAKE_BUILD_TYPE: ${CMAKE_BUILD_TYPE}")
endif()

set(LLVM_LIBDIR_SUFFIX "" CACHE STRING "Define suffix of library directory name (32/64)" )

set(LLVM_TOOLS_INSTALL_DIR "bin" CACHE STRING "Path for binary subdirectory (defaults to 'bin')")
mark_as_advanced(LLVM_TOOLS_INSTALL_DIR)

set(LLVM_UTILS_INSTALL_DIR "bin" CACHE STRING
    "Path to install LLVM utilities (enabled by LLVM_INSTALL_UTILS=ON) (defaults to LLVM_TOOLS_INSTALL_DIR)")
mark_as_advanced(LLVM_TOOLS_INSTALL_DIR)

# They are used as destination of target generators.
set(LLVM_RUNTIME_OUTPUT_INTDIR ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/bin)
set(LLVM_LIBRARY_OUTPUT_INTDIR ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX})
if(WIN32 OR CYGWIN)
  # DLL platform -- put DLLs into bin.
  set(LLVM_SHLIB_OUTPUT_INTDIR ${LLVM_RUNTIME_OUTPUT_INTDIR})
else()
  set(LLVM_SHLIB_OUTPUT_INTDIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
endif()

# Each of them corresponds to llvm-config's.
set(LLVM_TOOLS_BINARY_DIR ${LLVM_RUNTIME_OUTPUT_INTDIR}) # --bindir
set(LLVM_LIBRARY_DIR      ${LLVM_LIBRARY_OUTPUT_INTDIR}) # --libdir
set(LLVM_MAIN_SRC_DIR     ${CMAKE_CURRENT_SOURCE_DIR}  ) # --src-root
set(LLVM_MAIN_INCLUDE_DIR ${LLVM_MAIN_SRC_DIR}/include ) # --includedir
set(LLVM_BINARY_DIR       ${CMAKE_CURRENT_BINARY_DIR}  ) # --prefix

# Note: LLVM_CMAKE_PATH does not include generated files
set(LLVM_CMAKE_PATH ${LLVM_MAIN_SRC_DIR}/cmake/modules)
set(LLVM_EXAMPLES_BINARY_DIR ${LLVM_BINARY_DIR}/examples)
set(LLVM_INCLUDE_DIR ${CMAKE_CURRENT_BINARY_DIR}/include)

# List of all targets to be built by default:
set(LLVM_ALL_TARGETS
  AArch64
  AMDGPU
  ARM
  BPF
  Hexagon
  Lanai
  Mips
  MSP430
  NVPTX
  PowerPC
  Sparc
  SystemZ
  X86
  XCore
  )

# List of targets with JIT support:
set(LLVM_TARGETS_WITH_JIT X86 PowerPC AArch64 ARM Mips SystemZ)

set(LLVM_TARGETS_TO_BUILD "all"
    CACHE STRING "Semicolon-separated list of targets to build, or \"all\".")

set(LLVM_EXPERIMENTAL_TARGETS_TO_BUILD ""
  CACHE STRING "Semicolon-separated list of experimental targets to build.")

option(BUILD_SHARED_LIBS
  "Build all libraries as shared libraries instead of static" OFF)

option(LLVM_ENABLE_BACKTRACES "Enable embedding backtraces on crash." ON)
if(LLVM_ENABLE_BACKTRACES)
  set(ENABLE_BACKTRACES 1)
endif()

option(LLVM_ENABLE_CRASH_OVERRIDES "Enable crash overrides." ON)
if(LLVM_ENABLE_CRASH_OVERRIDES)
  set(ENABLE_CRASH_OVERRIDES 1)
endif()

option(LLVM_ENABLE_FFI "Use libffi to call external functions from the interpreter" OFF)
set(FFI_LIBRARY_DIR "" CACHE PATH "Additional directory, where CMake should search for libffi.so")
set(FFI_INCLUDE_DIR "" CACHE PATH "Additional directory, where CMake should search for ffi.h or ffi/ffi.h")

set(LLVM_TARGET_ARCH "host"
  CACHE STRING "Set target to use for LLVM JIT or use \"host\" for automatic detection.")

option(LLVM_ENABLE_TERMINFO "Use terminfo database if available." ON)

set(LLVM_ENABLE_LIBXML2 "ON" CACHE STRING "Use libxml2 if available. Can be ON, OFF, or FORCE_ON")

option(LLVM_ENABLE_LIBEDIT "Use libedit if available." ON)

option(LLVM_ENABLE_THREADS "Use threads if available." ON)

option(LLVM_ENABLE_ZLIB "Use zlib for compression/decompression if available." ON)

if( LLVM_TARGETS_TO_BUILD STREQUAL "all" )
  set( LLVM_TARGETS_TO_BUILD ${LLVM_ALL_TARGETS} )
endif()

set(LLVM_TARGETS_TO_BUILD
   ${LLVM_TARGETS_TO_BUILD}
   ${LLVM_EXPERIMENTAL_TARGETS_TO_BUILD})
list(REMOVE_DUPLICATES LLVM_TARGETS_TO_BUILD)

option(LLVM_ENABLE_PIC "Build Position-Independent Code" ON)
option(LLVM_ENABLE_WARNINGS "Enable compiler warnings." ON)
option(LLVM_ENABLE_MODULES "Compile with C++ modules enabled." OFF)
if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
  option(LLVM_ENABLE_MODULE_DEBUGGING "Compile with -gmodules." ON)
  option(LLVM_ENABLE_LOCAL_SUBMODULE_VISIBILITY "Compile with -fmodules-local-submodule-visibility." OFF)
else()
  option(LLVM_ENABLE_MODULE_DEBUGGING "Compile with -gmodules." OFF)
  option(LLVM_ENABLE_LOCAL_SUBMODULE_VISIBILITY "Compile with -fmodules-local-submodule-visibility." ON)
endif()
option(LLVM_ENABLE_CXX1Y "Compile with C++1y enabled." OFF)
option(LLVM_ENABLE_CXX1Z "Compile with C++1z enabled." OFF)
option(LLVM_ENABLE_LIBCXX "Use libc++ if available." OFF)
option(LLVM_ENABLE_LLD "Use lld as C and C++ linker." OFF)
option(LLVM_ENABLE_PEDANTIC "Compile with pedantic enabled." ON)
option(LLVM_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF)

option(LLVM_ENABLE_DUMP "Enable dump functions in release builds" OFF)

if( NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG" )
  option(LLVM_ENABLE_ASSERTIONS "Enable assertions" OFF)
else()
  option(LLVM_ENABLE_ASSERTIONS "Enable assertions" ON)
endif()

if( LLVM_ENABLE_ASSERTIONS )
  set(LLVM_ENABLE_DUMP ON)
endif()

option(LLVM_ENABLE_EXPENSIVE_CHECKS "Enable expensive checks" OFF)

set(LLVM_ABI_BREAKING_CHECKS "WITH_ASSERTS" CACHE STRING
  "Enable abi-breaking checks.  Can be WITH_ASSERTS, FORCE_ON or FORCE_OFF.")

option(LLVM_FORCE_USE_OLD_HOST_TOOLCHAIN
       "Set to ON to force using an old, unsupported host toolchain." OFF)

option(LLVM_USE_INTEL_JITEVENTS
  "Use Intel JIT API to inform Intel(R) VTune(TM) Amplifier XE 2011 about JIT code"
  OFF)

if( LLVM_USE_INTEL_JITEVENTS )
  # Verify we are on a supported platform
  if( NOT CMAKE_SYSTEM_NAME MATCHES "Windows" AND NOT CMAKE_SYSTEM_NAME MATCHES "Linux" )
    message(FATAL_ERROR
      "Intel JIT API support is available on Linux and Windows only.")
  endif()
endif( LLVM_USE_INTEL_JITEVENTS )

option(LLVM_USE_OPROFILE
  "Use opagent JIT interface to inform OProfile about JIT code" OFF)

option(LLVM_EXTERNALIZE_DEBUGINFO
  "Generate dSYM files and strip executables and libraries (Darwin Only)" OFF)

# If enabled, verify we are on a platform that supports oprofile.
if( LLVM_USE_OPROFILE )
  if( NOT CMAKE_SYSTEM_NAME MATCHES "Linux" )
    message(FATAL_ERROR "OProfile support is available on Linux only.")
  endif( NOT CMAKE_SYSTEM_NAME MATCHES "Linux" )
endif( LLVM_USE_OPROFILE )

set(LLVM_USE_SANITIZER "" CACHE STRING
  "Define the sanitizer used to build binaries and tests.")
set(LLVM_LIB_FUZZING_ENGINE "" CACHE PATH
  "Path to fuzzing library for linking with fuzz targets")

option(LLVM_USE_SPLIT_DWARF
  "Use -gsplit-dwarf when compiling llvm." OFF)

option(LLVM_POLLY_LINK_INTO_TOOLS "Statically link Polly into tools (if available)" ON)
option(LLVM_POLLY_BUILD "Build LLVM with Polly" ON)

if (EXISTS ${LLVM_MAIN_SRC_DIR}/tools/polly/CMakeLists.txt)
  set(POLLY_IN_TREE TRUE)
elseif(LLVM_EXTERNAL_POLLY_SOURCE_DIR)
  set(POLLY_IN_TREE TRUE)
else()
  set(POLLY_IN_TREE FALSE)
endif()

if (LLVM_POLLY_BUILD AND POLLY_IN_TREE)
  set(WITH_POLLY ON)
else()
  set(WITH_POLLY OFF)
endif()

if (LLVM_POLLY_LINK_INTO_TOOLS AND WITH_POLLY)
  set(LINK_POLLY_INTO_TOOLS ON)
else()
  set(LINK_POLLY_INTO_TOOLS OFF)
endif()

# Define an option controlling whether we should build for 32-bit on 64-bit
# platforms, where supported.
if( CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32 )
  # TODO: support other platforms and toolchains.
  option(LLVM_BUILD_32_BITS "Build 32 bits executables and libraries." OFF)
endif()

# Define the default arguments to use with 'lit', and an option for the user to
# override.
set(LIT_ARGS_DEFAULT "-sv")
if (MSVC_IDE OR XCODE)
  set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar")
endif()
set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit")

# On Win32 hosts, provide an option to specify the path to the GnuWin32 tools.
if( WIN32 AND NOT CYGWIN )
  set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools")
endif()

# Define options to control the inclusion and default build behavior for
# components which may not strictly be necessary (tools, examples, and tests).
#
# This is primarily to support building smaller or faster project files.
option(LLVM_INCLUDE_TOOLS "Generate build targets for the LLVM tools." ON)
option(LLVM_BUILD_TOOLS
  "Build the LLVM tools. If OFF, just generate build targets." ON)

option(LLVM_INCLUDE_UTILS "Generate build targets for the LLVM utils." ON)
option(LLVM_BUILD_UTILS
  "Build LLVM utility binaries. If OFF, just generate build targets." ON)

option(LLVM_INCLUDE_RUNTIMES "Generate build targets for the LLVM runtimes." ON)
option(LLVM_BUILD_RUNTIMES
  "Build the LLVM runtimes. If OFF, just generate build targets." ON)

option(LLVM_BUILD_RUNTIME
  "Build the LLVM runtime libraries." ON)
option(LLVM_BUILD_EXAMPLES
  "Build the LLVM example programs. If OFF, just generate build targets." OFF)
option(LLVM_INCLUDE_EXAMPLES "Generate build targets for the LLVM examples" ON)

option(LLVM_BUILD_TESTS
  "Build LLVM unit tests. If OFF, just generate build targets." OFF)
option(LLVM_INCLUDE_TESTS "Generate build targets for the LLVM unit tests." ON)
option(LLVM_INCLUDE_GO_TESTS "Include the Go bindings tests in test build targets." ON)

option (LLVM_BUILD_DOCS "Build the llvm documentation." OFF)
option (LLVM_INCLUDE_DOCS "Generate build targets for llvm documentation." ON)
option (LLVM_ENABLE_DOXYGEN "Use doxygen to generate llvm API documentation." OFF)
option (LLVM_ENABLE_SPHINX "Use Sphinx to generate llvm documentation." OFF)
option (LLVM_ENABLE_OCAMLDOC "Build OCaml bindings documentation." ON)

set(LLVM_INSTALL_DOXYGEN_HTML_DIR "share/doc/llvm/doxygen-html"
    CACHE STRING "Doxygen-generated HTML documentation install directory")
set(LLVM_INSTALL_OCAMLDOC_HTML_DIR "share/doc/llvm/ocaml-html"
    CACHE STRING "OCamldoc-generated HTML documentation install directory")

option (LLVM_BUILD_EXTERNAL_COMPILER_RT
  "Build compiler-rt as an external project." OFF)

option (LLVM_VERSION_PRINTER_SHOW_HOST_TARGET_INFO
  "Show target and host info when tools are invoked with --version." ON)

# You can configure which libraries from LLVM you want to include in the
# shared library by setting LLVM_DYLIB_COMPONENTS to a semi-colon delimited
# list of LLVM components. All component names handled by llvm-config are valid.
if(NOT DEFINED LLVM_DYLIB_COMPONENTS)
  set(LLVM_DYLIB_COMPONENTS "all" CACHE STRING
    "Semicolon-separated list of components to include in libLLVM, or \"all\".")
endif()
option(LLVM_LINK_LLVM_DYLIB "Link tools against the libllvm dynamic library" OFF)
option(LLVM_BUILD_LLVM_C_DYLIB "Build libllvm-c re-export library (Darwin Only)" OFF)
set(LLVM_BUILD_LLVM_DYLIB_default OFF)
if(LLVM_LINK_LLVM_DYLIB OR LLVM_BUILD_LLVM_C_DYLIB)
  set(LLVM_BUILD_LLVM_DYLIB_default ON)
endif()
option(LLVM_BUILD_LLVM_DYLIB "Build libllvm dynamic library" ${LLVM_BUILD_LLVM_DYLIB_default})

option(LLVM_DYLIB_SYMBOL_VERSIONING OFF)

option(LLVM_OPTIMIZED_TABLEGEN "Force TableGen to be built with optimization" OFF)
if(CMAKE_CROSSCOMPILING OR (LLVM_OPTIMIZED_TABLEGEN AND (LLVM_ENABLE_ASSERTIONS OR CMAKE_CONFIGURATION_TYPES)))
  set(LLVM_USE_HOST_TOOLS ON)
endif()

if (MSVC_IDE AND NOT (MSVC_VERSION LESS 1900))
  option(LLVM_ADD_NATIVE_VISUALIZERS_TO_SOLUTION "Configure project to use Visual Studio native visualizers" TRUE)
else()
  set(LLVM_ADD_NATIVE_VISUALIZERS_TO_SOLUTION FALSE CACHE INTERNAL "For Visual Studio 2013, manually copy natvis files to Documents\\Visual Studio 2013\\Visualizers" FORCE)
endif()

if (LLVM_BUILD_INSTRUMENTED OR LLVM_BUILD_INSTRUMENTED_COVERAGE OR
    LLVM_ENABLE_IR_PGO)
  if(NOT LLVM_PROFILE_MERGE_POOL_SIZE)
    # A pool size of 1-2 is probably sufficient on a SSD. 3-4 should be fine
    # for spining disks. Anything higher may only help on slower mediums.
    set(LLVM_PROFILE_MERGE_POOL_SIZE "4")
  endif()
  if(NOT LLVM_PROFILE_FILE_PATTERN)
    if(NOT LLVM_PROFILE_DATA_DIR)
      file(TO_NATIVE_PATH "${LLVM_BINARY_DIR}/profiles" LLVM_PROFILE_DATA_DIR)
    endif()
		file(TO_NATIVE_PATH "${LLVM_PROFILE_DATA_DIR}/%${LLVM_PROFILE_MERGE_POOL_SIZE}m.profraw" LLVM_PROFILE_FILE_PATTERN)
  endif()
endif()

if (LLVM_BUILD_STATIC)
  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static")
endif()

# Override the default target with an environment variable named by LLVM_TARGET_TRIPLE_ENV.
set(LLVM_TARGET_TRIPLE_ENV CACHE STRING "The name of environment variable to override default target. Disabled by blank.")
mark_as_advanced(LLVM_TARGET_TRIPLE_ENV)

# All options referred to from HandleLLVMOptions have to be specified
# BEFORE this include, otherwise options will not be correctly set on
# first cmake run
include(config-ix)

string(REPLACE "Native" ${LLVM_NATIVE_ARCH}
  LLVM_TARGETS_TO_BUILD "${LLVM_TARGETS_TO_BUILD}")
list(REMOVE_DUPLICATES LLVM_TARGETS_TO_BUILD)

# By default, we target the host, but this can be overridden at CMake
# invocation time.
set(LLVM_DEFAULT_TARGET_TRIPLE "${LLVM_HOST_TRIPLE}" CACHE STRING
  "Default target for which LLVM will generate code." )
set(TARGET_TRIPLE "${LLVM_DEFAULT_TARGET_TRIPLE}")
message(STATUS "LLVM host triple: ${LLVM_HOST_TRIPLE}")
message(STATUS "LLVM default target triple: ${LLVM_DEFAULT_TARGET_TRIPLE}")

include(HandleLLVMOptions)

# Verify that we can find a Python 2 interpreter.  Python 3 is unsupported.
# FIXME: We should support systems with only Python 3, but that requires work
# on LLDB.
set(Python_ADDITIONAL_VERSIONS 2.7)
include(FindPythonInterp)
if( NOT PYTHONINTERP_FOUND )
  message(FATAL_ERROR
"Unable to find Python interpreter, required for builds and testing.

Please install Python or specify the PYTHON_EXECUTABLE CMake variable.")
endif()

if( ${PYTHON_VERSION_STRING} VERSION_LESS 2.7 )
  message(FATAL_ERROR "Python 2.7 or newer is required")
endif()

######
# LLVMBuild Integration
#
# We use llvm-build to generate all the data required by the CMake based
# build system in one swoop:
#
#  - We generate a file (a CMake fragment) in the object root which contains
#    all the definitions that are required by CMake.
#
#  - We generate the library table used by llvm-config.
#
#  - We generate the dependencies for the CMake fragment, so that we will
#    automatically reconfigure outselves.

set(LLVMBUILDTOOL "${LLVM_MAIN_SRC_DIR}/utils/llvm-build/llvm-build")
set(LLVMCONFIGLIBRARYDEPENDENCIESINC
  "${LLVM_BINARY_DIR}/tools/llvm-config/LibraryDependencies.inc")
set(LLVMBUILDCMAKEFRAG
  "${LLVM_BINARY_DIR}/LLVMBuild.cmake")

# Create the list of optional components that are enabled
if (LLVM_USE_INTEL_JITEVENTS)
  set(LLVMOPTIONALCOMPONENTS IntelJITEvents)
endif (LLVM_USE_INTEL_JITEVENTS)
if (LLVM_USE_OPROFILE)
  set(LLVMOPTIONALCOMPONENTS ${LLVMOPTIONALCOMPONENTS} OProfileJIT)
endif (LLVM_USE_OPROFILE)

message(STATUS "Constructing LLVMBuild project information")
execute_process(
  COMMAND ${PYTHON_EXECUTABLE} -B ${LLVMBUILDTOOL}
            --native-target "${LLVM_NATIVE_ARCH}"
            --enable-targets "${LLVM_TARGETS_TO_BUILD}"
            --enable-optional-components "${LLVMOPTIONALCOMPONENTS}"
            --write-library-table ${LLVMCONFIGLIBRARYDEPENDENCIESINC}
            --write-cmake-fragment ${LLVMBUILDCMAKEFRAG}
            OUTPUT_VARIABLE LLVMBUILDOUTPUT
            ERROR_VARIABLE LLVMBUILDERRORS
            OUTPUT_STRIP_TRAILING_WHITESPACE
            ERROR_STRIP_TRAILING_WHITESPACE
  RESULT_VARIABLE LLVMBUILDRESULT)

# On Win32, CMake doesn't properly handle piping the default output/error
# streams into the GUI console. So, we explicitly catch and report them.
if( NOT "${LLVMBUILDOUTPUT}" STREQUAL "")
  message(STATUS "llvm-build output: ${LLVMBUILDOUTPUT}")
endif()
if( NOT "${LLVMBUILDRESULT}" STREQUAL "0" )
  message(FATAL_ERROR
    "Unexpected failure executing llvm-build: ${LLVMBUILDERRORS}")
endif()

# Include the generated CMake fragment. This will define properties from the
# LLVMBuild files in a format which is easy to consume from CMake, and will add
# the dependencies so that CMake will reconfigure properly when the LLVMBuild
# files change.
include(${LLVMBUILDCMAKEFRAG})

######

# Configure all of the various header file fragments LLVM uses which depend on
# configuration variables.
set(LLVM_ENUM_TARGETS "")
set(LLVM_ENUM_ASM_PRINTERS "")
set(LLVM_ENUM_ASM_PARSERS "")
set(LLVM_ENUM_DISASSEMBLERS "")
foreach(t ${LLVM_TARGETS_TO_BUILD})
  set( td ${LLVM_MAIN_SRC_DIR}/lib/Target/${t} )

  list(FIND LLVM_ALL_TARGETS ${t} idx)
  list(FIND LLVM_EXPERIMENTAL_TARGETS_TO_BUILD ${t} idy)
  if( idx LESS 0 AND idy LESS 0 )
    message(FATAL_ERROR "The target `${t}' does not exist.
    It should be one of\n${LLVM_ALL_TARGETS}")
  else()
    set(LLVM_ENUM_TARGETS "${LLVM_ENUM_TARGETS}LLVM_TARGET(${t})\n")
  endif()

  file(GLOB asmp_file "${td}/*AsmPrinter.cpp")
  if( asmp_file )
    set(LLVM_ENUM_ASM_PRINTERS
      "${LLVM_ENUM_ASM_PRINTERS}LLVM_ASM_PRINTER(${t})\n")
  endif()
  if( EXISTS ${td}/AsmParser/CMakeLists.txt )
    set(LLVM_ENUM_ASM_PARSERS
      "${LLVM_ENUM_ASM_PARSERS}LLVM_ASM_PARSER(${t})\n")
  endif()
  if( EXISTS ${td}/Disassembler/CMakeLists.txt )
    set(LLVM_ENUM_DISASSEMBLERS
      "${LLVM_ENUM_DISASSEMBLERS}LLVM_DISASSEMBLER(${t})\n")
  endif()
endforeach(t)

# Produce the target definition files, which provide a way for clients to easily
# include various classes of targets.
configure_file(
  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/AsmPrinters.def.in
  ${LLVM_INCLUDE_DIR}/llvm/Config/AsmPrinters.def
  )
configure_file(
  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/AsmParsers.def.in
  ${LLVM_INCLUDE_DIR}/llvm/Config/AsmParsers.def
  )
configure_file(
  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/Disassemblers.def.in
  ${LLVM_INCLUDE_DIR}/llvm/Config/Disassemblers.def
  )
configure_file(
  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/Targets.def.in
  ${LLVM_INCLUDE_DIR}/llvm/Config/Targets.def
  )

# Configure the three LLVM configuration header files.
configure_file(
  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/config.h.cmake
  ${LLVM_INCLUDE_DIR}/llvm/Config/config.h)
configure_file(
  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/llvm-config.h.cmake
  ${LLVM_INCLUDE_DIR}/llvm/Config/llvm-config.h)
configure_file(
  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/abi-breaking.h.cmake
  ${LLVM_INCLUDE_DIR}/llvm/Config/abi-breaking.h)
configure_file(
  ${LLVM_MAIN_INCLUDE_DIR}/llvm/Support/DataTypes.h.cmake
  ${LLVM_INCLUDE_DIR}/llvm/Support/DataTypes.h)

# Add target for generating source rpm package.
set(LLVM_SRPM_USER_BINARY_SPECFILE ${CMAKE_CURRENT_SOURCE_DIR}/llvm.spec.in
    CACHE FILEPATH ".spec file to use for srpm generation")
set(LLVM_SRPM_BINARY_SPECFILE ${CMAKE_CURRENT_BINARY_DIR}/llvm.spec)
set(LLVM_SRPM_DIR "${CMAKE_CURRENT_BINARY_DIR}/srpm")

# SVN_REVISION and GIT_COMMIT get set by the call to add_version_info_from_vcs.
# DUMMY_VAR contains a version string which we don't care about.
add_version_info_from_vcs(DUMMY_VAR)
if ( SVN_REVISION )
  set(LLVM_RPM_SPEC_REVISION "r${SVN_REVISION}")
elseif ( GIT_COMMIT )
  set (LLVM_RPM_SPEC_REVISION "g${GIT_COMMIT}")
endif()

configure_file(
  ${LLVM_SRPM_USER_BINARY_SPECFILE}
  ${LLVM_SRPM_BINARY_SPECFILE} @ONLY)

add_custom_target(srpm
  COMMAND cpack -G TGZ --config CPackSourceConfig.cmake -B ${LLVM_SRPM_DIR}/SOURCES
  COMMAND rpmbuild -bs --define '_topdir ${LLVM_SRPM_DIR}' ${LLVM_SRPM_BINARY_SPECFILE})
set_target_properties(srpm PROPERTIES FOLDER "Misc")


# They are not referenced. See set_output_directory().
set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/bin )
set( CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} )
set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX} )

if(APPLE AND DARWIN_LTO_LIBRARY)
  set(CMAKE_EXE_LINKER_FLAGS
    "${CMAKE_EXE_LINKER_FLAGS} -Wl,-lto_library -Wl,${DARWIN_LTO_LIBRARY}")
  set(CMAKE_SHARED_LINKER_FLAGS
    "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-lto_library -Wl,${DARWIN_LTO_LIBRARY}")
  set(CMAKE_MODULE_LINKER_FLAGS
    "${CMAKE_MODULE_LINKER_FLAGS} -Wl,-lto_library -Wl,${DARWIN_LTO_LIBRARY}")
endif()

# Work around a broken bfd ld behavior. When linking a binary with a
# foo.so library, it will try to find any library that foo.so uses and
# check its symbols. This is wasteful (the check was done when foo.so
# was created) and can fail since it is not the dynamic linker and
# doesn't know how to handle search paths correctly.
if (UNIX AND NOT APPLE AND NOT ${CMAKE_SYSTEM_NAME} MATCHES "SunOS|AIX")
  set(CMAKE_EXE_LINKER_FLAGS
      "${CMAKE_EXE_LINKER_FLAGS} -Wl,-allow-shlib-undefined")
endif()

set(CMAKE_INCLUDE_CURRENT_DIR ON)

include_directories( ${LLVM_INCLUDE_DIR} ${LLVM_MAIN_INCLUDE_DIR})

# when crosscompiling import the executable targets from a file
if(LLVM_USE_HOST_TOOLS)
  include(CrossCompile)
endif(LLVM_USE_HOST_TOOLS)
if(LLVM_TARGET_IS_CROSSCOMPILE_HOST)
# Dummy use to avoid CMake Warning: Manually-specified variables were not used
# (this is a variable that CrossCompile sets on recursive invocations)
endif()

if(${CMAKE_SYSTEM_NAME} MATCHES "(FreeBSD|DragonFly)")
  # On FreeBSD, /usr/local/* is not used by default. In order to build LLVM
  # with libxml2, iconv.h, etc., we must add /usr/local paths.
  include_directories(SYSTEM "/usr/local/include")
  link_directories("/usr/local/lib")
endif(${CMAKE_SYSTEM_NAME} MATCHES "(FreeBSD|DragonFly)")

if( ${CMAKE_SYSTEM_NAME} MATCHES SunOS )
   # special hack for Solaris to handle crazy system sys/regset.h
   include_directories("${LLVM_MAIN_INCLUDE_DIR}/llvm/Support/Solaris")
endif( ${CMAKE_SYSTEM_NAME} MATCHES SunOS )

# Make sure we don't get -rdynamic in every binary. For those that need it,
# use export_executable_symbols(target).
set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "")

set(LLVM_PROFDATA_FILE "" CACHE FILEPATH
  "Profiling data file to use when compiling in order to improve runtime performance.")

if(LLVM_PROFDATA_FILE AND EXISTS ${LLVM_PROFDATA_FILE})
  if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" )
    add_definitions("-fprofile-instr-use=${LLVM_PROFDATA_FILE}")
  else()
    message(FATAL_ERROR "LLVM_PROFDATA_FILE can only be specified when compiling with clang")
  endif()
endif()

include(AddLLVM)
include(TableGen)

if( MINGW )
  # People report that -O3 is unreliable on MinGW. The traditional
  # build also uses -O2 for that reason:
  llvm_replace_compiler_option(CMAKE_CXX_FLAGS_RELEASE "-O3" "-O2")
endif()

# Put this before tblgen. Else we have a circular dependence.
add_subdirectory(lib/Demangle)
add_subdirectory(lib/Support)
add_subdirectory(lib/TableGen)

add_subdirectory(utils/TableGen)

add_subdirectory(include/llvm)

add_subdirectory(lib)

if( LLVM_INCLUDE_UTILS )
  add_subdirectory(utils/FileCheck)
  add_subdirectory(utils/PerfectShuffle)
  add_subdirectory(utils/count)
  add_subdirectory(utils/not)
  add_subdirectory(utils/yaml-bench)
else()
  if ( LLVM_INCLUDE_TESTS )
    message(FATAL_ERROR "Including tests when not building utils will not work.
    Either set LLVM_INCLUDE_UTILS to On, or set LLVM_INCLDE_TESTS to Off.")
  endif()
endif()

# Use LLVM_ADD_NATIVE_VISUALIZERS_TO_SOLUTION instead of LLVM_INCLUDE_UTILS because it is not really a util
if (LLVM_ADD_NATIVE_VISUALIZERS_TO_SOLUTION)
  add_subdirectory(utils/LLVMVisualizers)
endif()

foreach( binding ${LLVM_BINDINGS_LIST} )
  if( EXISTS "${LLVM_MAIN_SRC_DIR}/bindings/${binding}/CMakeLists.txt" )
    add_subdirectory(bindings/${binding})
  endif()
endforeach()

add_subdirectory(projects)

if( LLVM_INCLUDE_TOOLS )
  add_subdirectory(tools)
endif()

if( LLVM_INCLUDE_RUNTIMES )
  add_subdirectory(runtimes)
endif()

if( LLVM_INCLUDE_EXAMPLES )
  add_subdirectory(examples)
endif()

if( LLVM_INCLUDE_TESTS )
  if(EXISTS ${LLVM_MAIN_SRC_DIR}/projects/test-suite AND TARGET clang)
    include(LLVMExternalProjectUtils)
    llvm_ExternalProject_Add(test-suite ${LLVM_MAIN_SRC_DIR}/projects/test-suite
      USE_TOOLCHAIN
      EXCLUDE_FROM_ALL
      NO_INSTALL
      ALWAYS_CLEAN)
  endif()
  add_subdirectory(utils/lit)
  add_subdirectory(test)
  add_subdirectory(unittests)
  if( LLVM_INCLUDE_UTILS )
    add_subdirectory(utils/unittest)
  endif()

  if (WIN32)
    # This utility is used to prevent crashing tests from calling Dr. Watson on
    # Windows.
    add_subdirectory(utils/KillTheDoctor)
  endif()

  # Add a global check rule now that all subdirectories have been traversed
  # and we know the total set of lit testsuites.
  get_property(LLVM_LIT_TESTSUITES GLOBAL PROPERTY LLVM_LIT_TESTSUITES)
  get_property(LLVM_LIT_PARAMS GLOBAL PROPERTY LLVM_LIT_PARAMS)
  get_property(LLVM_LIT_DEPENDS GLOBAL PROPERTY LLVM_LIT_DEPENDS)
  get_property(LLVM_LIT_EXTRA_ARGS GLOBAL PROPERTY LLVM_LIT_EXTRA_ARGS)
  get_property(LLVM_ADDITIONAL_TEST_TARGETS
               GLOBAL PROPERTY LLVM_ADDITIONAL_TEST_TARGETS)
  get_property(LLVM_ADDITIONAL_TEST_DEPENDS
               GLOBAL PROPERTY LLVM_ADDITIONAL_TEST_DEPENDS)
  add_lit_target(check-all
    "Running all regression tests"
    ${LLVM_LIT_TESTSUITES}
    PARAMS ${LLVM_LIT_PARAMS}
    DEPENDS ${LLVM_LIT_DEPENDS} ${LLVM_ADDITIONAL_TEST_TARGETS}
    ARGS ${LLVM_LIT_EXTRA_ARGS}
    )
  if(TARGET check-runtimes)
    add_dependencies(check-all check-runtimes)
  endif()
  add_custom_target(test-depends
                    DEPENDS ${LLVM_LIT_DEPENDS} ${LLVM_ADDITIONAL_TEST_DEPENDS})
  set_target_properties(test-depends PROPERTIES FOLDER "Tests")
endif()

if (LLVM_INCLUDE_DOCS)
  add_subdirectory(docs)
endif()

add_subdirectory(cmake/modules)

# Do this last so that all lit targets have already been created.
if (LLVM_INCLUDE_UTILS)
  add_subdirectory(utils/llvm-lit)
endif()

if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
  install(DIRECTORY include/llvm include/llvm-c
    DESTINATION include
    COMPONENT llvm-headers
    FILES_MATCHING
    PATTERN "*.def"
    PATTERN "*.h"
    PATTERN "*.td"
    PATTERN "*.inc"
    PATTERN "LICENSE.TXT"
    PATTERN ".svn" EXCLUDE
    )

  install(DIRECTORY ${LLVM_INCLUDE_DIR}/llvm
    DESTINATION include
    COMPONENT llvm-headers
    FILES_MATCHING
    PATTERN "*.def"
    PATTERN "*.h"
    PATTERN "*.gen"
    PATTERN "*.inc"
    # Exclude include/llvm/CMakeFiles/intrinsics_gen.dir, matched by "*.def"
    PATTERN "CMakeFiles" EXCLUDE
    PATTERN "config.h" EXCLUDE
    PATTERN ".svn" EXCLUDE
    )

  # Installing the headers needs to depend on generating any public
  # tablegen'd headers.
  add_custom_target(llvm-headers DEPENDS intrinsics_gen)
  set_target_properties(llvm-headers PROPERTIES FOLDER "Misc")

  if (NOT CMAKE_CONFIGURATION_TYPES)
    add_custom_target(install-llvm-headers
                      DEPENDS llvm-headers
                      COMMAND "${CMAKE_COMMAND}"
                              -DCMAKE_INSTALL_COMPONENT=llvm-headers
                              -P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
  endif()
endif()

# This must be at the end of the LLVM root CMakeLists file because it must run
# after all targets are created.
if(LLVM_DISTRIBUTION_COMPONENTS)
  if(CMAKE_CONFIGURATION_TYPES)
    message(FATAL_ERROR "LLVM_DISTRIBUTION_COMPONENTS cannot be specified with multi-configuration generators (i.e. Xcode or Visual Studio)")
  endif()

  add_custom_target(distribution)
  add_custom_target(install-distribution)
  foreach(target ${LLVM_DISTRIBUTION_COMPONENTS})
    if(TARGET ${target})
      add_dependencies(distribution ${target})
    else()
      message(SEND_ERROR "Specified distribution component '${target}' doesn't have a target")
    endif()

    if(TARGET install-${target})
      add_dependencies(install-distribution install-${target})
    else()
      message(SEND_ERROR "Specified distribution component '${target}' doesn't have an install target")
    endif()
  endforeach()
endif()

# This allows us to deploy the Universal CRT DLLs by passing -DCMAKE_INSTALL_UCRT_LIBRARIES=ON to CMake
if (MSVC)
  include(InstallRequiredSystemLibraries)
endif()