Home | History | Annotate | Download | only in llvm
      1 # See docs/CMake.html for instructions about how to build LLVM with CMake.
      2 
      3 cmake_minimum_required(VERSION 2.8.8)
      4 
      5 # FIXME: It may be removed when we use 2.8.12.
      6 if(CMAKE_VERSION VERSION_LESS 2.8.12)
      7   # Invalidate a couple of keywords.
      8   set(cmake_2_8_12_INTERFACE)
      9   set(cmake_2_8_12_PRIVATE)
     10 else()
     11   # Use ${cmake_2_8_12_KEYWORD} intead of KEYWORD in target_link_libraries().
     12   set(cmake_2_8_12_INTERFACE INTERFACE)
     13   set(cmake_2_8_12_PRIVATE PRIVATE)
     14   if(POLICY CMP0022)
     15     cmake_policy(SET CMP0022 NEW) # automatic when 2.8.12 is required
     16   endif()
     17 endif()
     18 
     19 project(LLVM)
     20 
     21 # Add path for custom modules
     22 set(CMAKE_MODULE_PATH
     23   ${CMAKE_MODULE_PATH}
     24   "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
     25   "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules"
     26   )
     27 
     28 set(LLVM_VERSION_MAJOR 3)
     29 set(LLVM_VERSION_MINOR 5)
     30 set(LLVM_VERSION_PATCH 0)
     31 
     32 if (NOT PACKAGE_VERSION)
     33   set(PACKAGE_VERSION "${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}svn")
     34 endif()
     35 
     36 option(LLVM_INSTALL_TOOLCHAIN_ONLY "Only include toolchain files in the 'install' target." OFF)
     37 
     38 option(LLVM_USE_FOLDERS "Enable solution folders in Visual Studio. Disable for Express versions." ON)
     39 if ( LLVM_USE_FOLDERS )
     40   set_property(GLOBAL PROPERTY USE_FOLDERS ON)
     41 endif()
     42 
     43 include(VersionFromVCS)
     44 
     45 option(LLVM_APPEND_VC_REV
     46   "Append the version control system revision id to LLVM version" OFF)
     47 
     48 if( LLVM_APPEND_VC_REV )
     49   add_version_info_from_vcs(PACKAGE_VERSION)
     50 endif()
     51 
     52 set(PACKAGE_NAME LLVM)
     53 set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
     54 set(PACKAGE_BUGREPORT "http://llvm.org/bugs/")
     55 
     56 set(BUG_REPORT_URL "${PACKAGE_BUGREPORT}" CACHE STRING
     57   "Default URL where bug reports are to be submitted.")
     58 
     59 # Configure CPack.
     60 set(CPACK_PACKAGE_INSTALL_DIRECTORY "LLVM")
     61 set(CPACK_PACKAGE_VENDOR "LLVM")
     62 set(CPACK_PACKAGE_VERSION_MAJOR ${LLVM_VERSION_MAJOR})
     63 set(CPACK_PACKAGE_VERSION_MINOR ${LLVM_VERSION_MINOR})
     64 set(CPACK_PACKAGE_VERSION_PATCH ${LLVM_VERSION_PATCH})
     65 set(CPACK_PACKAGE_VERSION ${PACKAGE_VERSION})
     66 set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE.TXT")
     67 if(WIN32 AND NOT UNIX)
     68   set(CPACK_PACKAGE_INSTALL_REGISTRY_KEY "LLVM")
     69   set(CPACK_PACKAGE_ICON "${CMAKE_CURRENT_SOURCE_DIR}\\\\cmake\\\\nsis_logo.bmp")
     70   set(CPACK_NSIS_MUI_ICON "${CMAKE_CURRENT_SOURCE_DIR}\\\\cmake\\\\nsis_icon.ico")
     71   set(CPACK_NSIS_MUI_UNIICON "${CMAKE_CURRENT_SOURCE_DIR}\\\\cmake\\\\nsis_icon.ico")
     72   set(CPACK_NSIS_MODIFY_PATH "ON")
     73   set(CPACK_NSIS_ENABLE_UNINSTALL_BEFORE_INSTALL "ON")
     74   set(CPACK_NSIS_EXTRA_INSTALL_COMMANDS
     75     "ExecWait '$INSTDIR/tools/msbuild/install.bat'")
     76   set(CPACK_NSIS_EXTRA_UNINSTALL_COMMANDS
     77     "ExecWait '$INSTDIR/tools/msbuild/uninstall.bat'")
     78 endif()
     79 include(CPack)
     80 
     81 # Sanity check our source directory to make sure that we are not trying to
     82 # generate an in-tree build (unless on MSVC_IDE, where it is ok), and to make
     83 # sure that we don't have any stray generated files lying around in the tree
     84 # (which would end up getting picked up by header search, instead of the correct
     85 # versions).
     86 if( CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR AND NOT MSVC_IDE )
     87   message(FATAL_ERROR "In-source builds are not allowed.
     88 CMake would overwrite the makefiles distributed with LLVM.
     89 Please create a directory and run cmake from there, passing the path
     90 to this source directory as the last argument.
     91 This process created the file `CMakeCache.txt' and the directory `CMakeFiles'.
     92 Please delete them.")
     93 endif()
     94 if( NOT CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR )
     95   file(GLOB_RECURSE
     96     tablegenned_files_on_include_dir
     97     "${CMAKE_CURRENT_SOURCE_DIR}/include/llvm/*.gen")
     98   file(GLOB_RECURSE
     99     tablegenned_files_on_lib_dir
    100     "${CMAKE_CURRENT_SOURCE_DIR}/lib/Target/*.inc")
    101   if( tablegenned_files_on_include_dir OR tablegenned_files_on_lib_dir)
    102     message(FATAL_ERROR "Apparently there is a previous in-source build,
    103 probably as the result of running `configure' and `make' on
    104 ${CMAKE_CURRENT_SOURCE_DIR}.
    105 This may cause problems. The suspicious files are:
    106 ${tablegenned_files_on_lib_dir}
    107 ${tablegenned_files_on_include_dir}
    108 Please clean the source directory.")
    109   endif()
    110 endif()
    111 
    112 string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE)
    113 
    114 # They are used as destination of target generators.
    115 set(LLVM_RUNTIME_OUTPUT_INTDIR ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/bin)
    116 set(LLVM_LIBRARY_OUTPUT_INTDIR ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib)
    117 if(WIN32 OR CYGWIN)
    118   # DLL platform -- put DLLs into bin.
    119   set(LLVM_SHLIB_OUTPUT_INTDIR ${LLVM_RUNTIME_OUTPUT_INTDIR})
    120 else()
    121   set(LLVM_SHLIB_OUTPUT_INTDIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
    122 endif()
    123 
    124 # Each of them corresponds to llvm-config's.
    125 set(LLVM_TOOLS_BINARY_DIR ${LLVM_RUNTIME_OUTPUT_INTDIR}) # --bindir
    126 set(LLVM_LIBRARY_DIR      ${LLVM_LIBRARY_OUTPUT_INTDIR}) # --libdir
    127 set(LLVM_MAIN_SRC_DIR     ${CMAKE_CURRENT_SOURCE_DIR}  ) # --src-root
    128 set(LLVM_MAIN_INCLUDE_DIR ${LLVM_MAIN_SRC_DIR}/include ) # --includedir
    129 set(LLVM_BINARY_DIR       ${CMAKE_CURRENT_BINARY_DIR}  ) # --prefix
    130 
    131 set(LLVM_EXAMPLES_BINARY_DIR ${LLVM_BINARY_DIR}/examples)
    132 set(LLVM_INCLUDE_DIR ${CMAKE_CURRENT_BINARY_DIR}/include)
    133 set(LLVM_LIBDIR_SUFFIX "" CACHE STRING "Define suffix of library directory name (32/64)" )
    134 
    135 set(LLVM_ALL_TARGETS
    136   AArch64
    137   ARM
    138   CppBackend
    139   Hexagon
    140   Mips
    141   MSP430
    142   NVPTX
    143   PowerPC
    144   R600
    145   Sparc
    146   SystemZ
    147   X86
    148   XCore
    149   )
    150 
    151 # List of targets with JIT support:
    152 set(LLVM_TARGETS_WITH_JIT X86 PowerPC AArch64 ARM Mips SystemZ)
    153 
    154 set(LLVM_TARGETS_TO_BUILD "all"
    155     CACHE STRING "Semicolon-separated list of targets to build, or \"all\".")
    156 
    157 set(LLVM_EXPERIMENTAL_TARGETS_TO_BUILD ""
    158   CACHE STRING "Semicolon-separated list of experimental targets to build.")
    159 
    160 option(BUILD_SHARED_LIBS
    161   "Build all libraries as shared libraries instead of static" OFF)
    162 
    163 option(LLVM_ENABLE_TIMESTAMPS "Enable embedding timestamp information in build" ON)
    164 if(LLVM_ENABLE_TIMESTAMPS)
    165   set(ENABLE_TIMESTAMPS 1)
    166 endif()
    167 
    168 option(LLVM_ENABLE_BACKTRACES "Enable embedding backtraces on crash." ON)
    169 if(LLVM_ENABLE_BACKTRACES)
    170   set(ENABLE_BACKTRACES 1)
    171 endif()
    172 
    173 option(LLVM_ENABLE_CRASH_OVERRIDES "Enable crash overrides." ON)
    174 if(LLVM_ENABLE_CRASH_OVERRIDES)
    175   set(ENABLE_CRASH_OVERRIDES 1)
    176 endif()
    177 
    178 option(LLVM_ENABLE_FFI "Use libffi to call external functions from the interpreter" OFF)
    179 set(FFI_LIBRARY_DIR "" CACHE PATH "Additional directory, where CMake should search for libffi.so")
    180 set(FFI_INCLUDE_DIR "" CACHE PATH "Additional directory, where CMake should search for ffi.h or ffi/ffi.h")
    181 
    182 set(LLVM_TARGET_ARCH "host"
    183   CACHE STRING "Set target to use for LLVM JIT or use \"host\" for automatic detection.")
    184 
    185 option(LLVM_ENABLE_TERMINFO "Use terminfo database if available." ON)
    186 
    187 option(LLVM_ENABLE_THREADS "Use threads if available." ON)
    188 
    189 option(LLVM_ENABLE_ZLIB "Use zlib for compression/decompression if available." ON)
    190 
    191 if( LLVM_TARGETS_TO_BUILD STREQUAL "all" )
    192   set( LLVM_TARGETS_TO_BUILD ${LLVM_ALL_TARGETS} )
    193 endif()
    194 
    195 set(LLVM_TARGETS_TO_BUILD
    196    ${LLVM_TARGETS_TO_BUILD}
    197    ${LLVM_EXPERIMENTAL_TARGETS_TO_BUILD})
    198 list(REMOVE_DUPLICATES LLVM_TARGETS_TO_BUILD)
    199 
    200 include(AddLLVMDefinitions)
    201 
    202 option(LLVM_ENABLE_PIC "Build Position-Independent Code" ON)
    203 
    204 # MSVC has a gazillion warnings with this.
    205 if( MSVC )
    206   option(LLVM_ENABLE_WARNINGS "Enable compiler warnings." OFF)
    207 else()
    208   option(LLVM_ENABLE_WARNINGS "Enable compiler warnings." ON)
    209 endif()
    210 
    211 option(LLVM_ENABLE_CXX1Y "Compile with C++1y enabled." OFF)
    212 option(LLVM_ENABLE_LIBCXX "Use libc++ if available." OFF)
    213 option(LLVM_ENABLE_PEDANTIC "Compile with pedantic enabled." ON)
    214 option(LLVM_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF)
    215 
    216 if( NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG" )
    217   option(LLVM_ENABLE_ASSERTIONS "Enable assertions" OFF)
    218 else()
    219   option(LLVM_ENABLE_ASSERTIONS "Enable assertions" ON)
    220 endif()
    221 
    222 option(LLVM_FORCE_USE_OLD_HOST_TOOLCHAIN
    223        "Set to ON to force using an old, unsupported host toolchain." OFF)
    224 
    225 option(LLVM_USE_INTEL_JITEVENTS
    226   "Use Intel JIT API to inform Intel(R) VTune(TM) Amplifier XE 2011 about JIT code"
    227   OFF)
    228 
    229 if( LLVM_USE_INTEL_JITEVENTS )
    230   # Verify we are on a supported platform
    231   if( NOT CMAKE_SYSTEM_NAME MATCHES "Windows" AND NOT CMAKE_SYSTEM_NAME MATCHES "Linux" )
    232     message(FATAL_ERROR
    233       "Intel JIT API support is available on Linux and Windows only.")
    234   endif()
    235 endif( LLVM_USE_INTEL_JITEVENTS )
    236 
    237 option(LLVM_USE_OPROFILE
    238   "Use opagent JIT interface to inform OProfile about JIT code" OFF)
    239 
    240 # If enabled, verify we are on a platform that supports oprofile.
    241 if( LLVM_USE_OPROFILE )
    242   if( NOT CMAKE_SYSTEM_NAME MATCHES "Linux" )
    243     message(FATAL_ERROR "OProfile support is available on Linux only.")
    244   endif( NOT CMAKE_SYSTEM_NAME MATCHES "Linux" )
    245 endif( LLVM_USE_OPROFILE )
    246 
    247 set(LLVM_USE_SANITIZER "" CACHE STRING
    248   "Define the sanitizer used to build binaries and tests.")
    249 
    250 option(LLVM_USE_SPLIT_DWARF
    251   "Use -gsplit-dwarf when compiling llvm." OFF)
    252 
    253 option(WITH_POLLY "Build LLVM with Polly" ON)
    254 option(LINK_POLLY_INTO_TOOLS "Static link Polly into tools" OFF)
    255 
    256 # Define an option controlling whether we should build for 32-bit on 64-bit
    257 # platforms, where supported.
    258 if( CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32 )
    259   # TODO: support other platforms and toolchains.
    260   option(LLVM_BUILD_32_BITS "Build 32 bits executables and libraries." OFF)
    261 endif()
    262 
    263 # Define the default arguments to use with 'lit', and an option for the user to
    264 # override.
    265 set(LIT_ARGS_DEFAULT "-sv")
    266 if (MSVC OR XCODE)
    267   set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar")
    268 endif()
    269 set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit")
    270 
    271 # On Win32 hosts, provide an option to specify the path to the GnuWin32 tools.
    272 if( WIN32 AND NOT CYGWIN )
    273   set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools")
    274 endif()
    275 
    276 # Define options to control the inclusion and default build behavior for
    277 # components which may not strictly be necessary (tools, examples, and tests).
    278 #
    279 # This is primarily to support building smaller or faster project files.
    280 option(LLVM_INCLUDE_TOOLS "Generate build targets for the LLVM tools." ON)
    281 option(LLVM_BUILD_TOOLS
    282   "Build the LLVM tools. If OFF, just generate build targets." ON)
    283 
    284 option(LLVM_INCLUDE_UTILS "Generate build targets for the LLVM utils." ON)
    285 
    286 option(LLVM_BUILD_RUNTIME
    287   "Build the LLVM runtime libraries." ON)
    288 option(LLVM_BUILD_EXAMPLES
    289   "Build the LLVM example programs. If OFF, just generate build targets." OFF)
    290 option(LLVM_INCLUDE_EXAMPLES "Generate build targets for the LLVM examples" ON)
    291 
    292 option(LLVM_BUILD_TESTS
    293   "Build LLVM unit tests. If OFF, just generate build targets." OFF)
    294 option(LLVM_INCLUDE_TESTS "Generate build targets for the LLVM unit tests." ON)
    295 
    296 option (LLVM_BUILD_DOCS "Build the llvm documentation." OFF)
    297 option (LLVM_INCLUDE_DOCS "Generate build targets for llvm documentation." ON)
    298 option (LLVM_ENABLE_DOXYGEN "Use doxygen to generate llvm API documentation." OFF)
    299 option (LLVM_ENABLE_SPHINX "Use Sphinx to generate llvm documentation." OFF)
    300 
    301 option (LLVM_BUILD_EXTERNAL_COMPILER_RT
    302   "Build compiler-rt as an external project." OFF)
    303 
    304 # All options referred to from HandleLLVMOptions have to be specified
    305 # BEFORE this include, otherwise options will not be correctly set on
    306 # first cmake run
    307 include(config-ix)
    308 
    309 # By default, we target the host, but this can be overridden at CMake
    310 # invocation time.
    311 set(LLVM_DEFAULT_TARGET_TRIPLE "${LLVM_HOST_TRIPLE}" CACHE STRING
    312   "Default target for which LLVM will generate code." )
    313 set(TARGET_TRIPLE "${LLVM_DEFAULT_TARGET_TRIPLE}")
    314 
    315 include(HandleLLVMOptions)
    316 
    317 # Verify that we can find a Python 2 interpreter.  Python 3 is unsupported.
    318 set(Python_ADDITIONAL_VERSIONS 2.7 2.6 2.5)
    319 include(FindPythonInterp)
    320 if( NOT PYTHONINTERP_FOUND )
    321   message(FATAL_ERROR
    322 "Unable to find Python interpreter, required for builds and testing.
    323 
    324 Please install Python or specify the PYTHON_EXECUTABLE CMake variable.")
    325 endif()
    326 
    327 ######
    328 # LLVMBuild Integration
    329 #
    330 # We use llvm-build to generate all the data required by the CMake based
    331 # build system in one swoop:
    332 #
    333 #  - We generate a file (a CMake fragment) in the object root which contains
    334 #    all the definitions that are required by CMake.
    335 #
    336 #  - We generate the library table used by llvm-config.
    337 #
    338 #  - We generate the dependencies for the CMake fragment, so that we will
    339 #    automatically reconfigure outselves.
    340 
    341 set(LLVMBUILDTOOL "${LLVM_MAIN_SRC_DIR}/utils/llvm-build/llvm-build")
    342 set(LLVMCONFIGLIBRARYDEPENDENCIESINC
    343   "${LLVM_BINARY_DIR}/tools/llvm-config/LibraryDependencies.inc")
    344 set(LLVMBUILDCMAKEFRAG
    345   "${LLVM_BINARY_DIR}/LLVMBuild.cmake")
    346 
    347 # Create the list of optional components that are enabled
    348 if (LLVM_USE_INTEL_JITEVENTS)
    349   set(LLVMOPTIONALCOMPONENTS IntelJITEvents)
    350 endif (LLVM_USE_INTEL_JITEVENTS)
    351 if (LLVM_USE_OPROFILE)
    352   set(LLVMOPTIONALCOMPONENTS ${LLVMOPTIONALCOMPONENTS} OProfileJIT)
    353 endif (LLVM_USE_OPROFILE)
    354 
    355 message(STATUS "Constructing LLVMBuild project information")
    356 execute_process(
    357   COMMAND ${PYTHON_EXECUTABLE} ${LLVMBUILDTOOL}
    358             --native-target "${LLVM_NATIVE_ARCH}"
    359             --enable-targets "${LLVM_TARGETS_TO_BUILD}"
    360             --enable-optional-components "${LLVMOPTIONALCOMPONENTS}"
    361             --write-library-table ${LLVMCONFIGLIBRARYDEPENDENCIESINC}
    362             --write-cmake-fragment ${LLVMBUILDCMAKEFRAG}
    363             OUTPUT_VARIABLE LLVMBUILDOUTPUT
    364             ERROR_VARIABLE LLVMBUILDERRORS
    365             OUTPUT_STRIP_TRAILING_WHITESPACE
    366             ERROR_STRIP_TRAILING_WHITESPACE
    367   RESULT_VARIABLE LLVMBUILDRESULT)
    368 
    369 # On Win32, CMake doesn't properly handle piping the default output/error
    370 # streams into the GUI console. So, we explicitly catch and report them.
    371 if( NOT "${LLVMBUILDOUTPUT}" STREQUAL "")
    372   message(STATUS "llvm-build output: ${LLVMBUILDOUTPUT}")
    373 endif()
    374 if( NOT "${LLVMBUILDRESULT}" STREQUAL "0" )
    375   message(FATAL_ERROR
    376     "Unexpected failure executing llvm-build: ${LLVMBUILDERRORS}")
    377 endif()
    378 
    379 # Include the generated CMake fragment. This will define properties from the
    380 # LLVMBuild files in a format which is easy to consume from CMake, and will add
    381 # the dependencies so that CMake will reconfigure properly when the LLVMBuild
    382 # files change.
    383 include(${LLVMBUILDCMAKEFRAG})
    384 
    385 ######
    386 
    387 # Configure all of the various header file fragments LLVM uses which depend on
    388 # configuration variables.
    389 set(LLVM_ENUM_TARGETS "")
    390 set(LLVM_ENUM_ASM_PRINTERS "")
    391 set(LLVM_ENUM_ASM_PARSERS "")
    392 set(LLVM_ENUM_DISASSEMBLERS "")
    393 foreach(t ${LLVM_TARGETS_TO_BUILD})
    394   set( td ${LLVM_MAIN_SRC_DIR}/lib/Target/${t} )
    395 
    396   list(FIND LLVM_ALL_TARGETS ${t} idx)
    397   list(FIND LLVM_EXPERIMENTAL_TARGETS_TO_BUILD ${t} idy)
    398   if( idx LESS 0 AND idy LESS 0 )
    399     message(FATAL_ERROR "The target `${t}' does not exist.
    400     It should be one of\n${LLVM_ALL_TARGETS}")
    401   else()
    402     set(LLVM_ENUM_TARGETS "${LLVM_ENUM_TARGETS}LLVM_TARGET(${t})\n")
    403   endif()
    404 
    405   file(GLOB asmp_file "${td}/*AsmPrinter.cpp")
    406   if( asmp_file )
    407     set(LLVM_ENUM_ASM_PRINTERS
    408       "${LLVM_ENUM_ASM_PRINTERS}LLVM_ASM_PRINTER(${t})\n")
    409   endif()
    410   if( EXISTS ${td}/AsmParser/CMakeLists.txt )
    411     set(LLVM_ENUM_ASM_PARSERS
    412       "${LLVM_ENUM_ASM_PARSERS}LLVM_ASM_PARSER(${t})\n")
    413   endif()
    414   if( EXISTS ${td}/Disassembler/CMakeLists.txt )
    415     set(LLVM_ENUM_DISASSEMBLERS
    416       "${LLVM_ENUM_DISASSEMBLERS}LLVM_DISASSEMBLER(${t})\n")
    417   endif()
    418 endforeach(t)
    419 
    420 # Produce the target definition files, which provide a way for clients to easily
    421 # include various classes of targets.
    422 configure_file(
    423   ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/AsmPrinters.def.in
    424   ${LLVM_INCLUDE_DIR}/llvm/Config/AsmPrinters.def
    425   )
    426 configure_file(
    427   ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/AsmParsers.def.in
    428   ${LLVM_INCLUDE_DIR}/llvm/Config/AsmParsers.def
    429   )
    430 configure_file(
    431   ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/Disassemblers.def.in
    432   ${LLVM_INCLUDE_DIR}/llvm/Config/Disassemblers.def
    433   )
    434 configure_file(
    435   ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/Targets.def.in
    436   ${LLVM_INCLUDE_DIR}/llvm/Config/Targets.def
    437   )
    438 
    439 # Configure the three LLVM configuration header files.
    440 configure_file(
    441   ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/config.h.cmake
    442   ${LLVM_INCLUDE_DIR}/llvm/Config/config.h)
    443 configure_file(
    444   ${LLVM_MAIN_INCLUDE_DIR}/llvm/Config/llvm-config.h.cmake
    445   ${LLVM_INCLUDE_DIR}/llvm/Config/llvm-config.h)
    446 configure_file(
    447   ${LLVM_MAIN_INCLUDE_DIR}/llvm/Support/DataTypes.h.cmake
    448   ${LLVM_INCLUDE_DIR}/llvm/Support/DataTypes.h)
    449 
    450 # They are not referenced. See set_output_directory().
    451 set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/bin )
    452 set( CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/lib )
    453 set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/lib )
    454 
    455 set(CMAKE_BUILD_WITH_INSTALL_RPATH ON)
    456 if (APPLE)
    457   set(CMAKE_INSTALL_NAME_DIR "@rpath")
    458   set(CMAKE_INSTALL_RPATH "@executable_path/../lib")
    459 else(UNIX)
    460   if(NOT DEFINED CMAKE_INSTALL_RPATH)
    461     set(CMAKE_INSTALL_RPATH "\$ORIGIN/../lib")
    462     if (${CMAKE_SYSTEM_NAME} MATCHES FreeBSD)
    463       set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-z,origin")
    464     endif()
    465   endif(NOT DEFINED CMAKE_INSTALL_RPATH)
    466 endif()
    467 
    468 set(CMAKE_INCLUDE_CURRENT_DIR ON)
    469 
    470 include_directories( ${LLVM_INCLUDE_DIR} ${LLVM_MAIN_INCLUDE_DIR})
    471 
    472 if( ${CMAKE_SYSTEM_NAME} MATCHES FreeBSD )
    473   # On FreeBSD, /usr/local/* is not used by default. In order to build LLVM
    474   # with libxml2, iconv.h, etc., we must add /usr/local paths.
    475   include_directories("/usr/local/include")
    476   link_directories("/usr/local/lib")
    477 endif( ${CMAKE_SYSTEM_NAME} MATCHES FreeBSD )
    478 
    479 if( ${CMAKE_SYSTEM_NAME} MATCHES SunOS )
    480    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -include llvm/Support/Solaris.h")
    481 endif( ${CMAKE_SYSTEM_NAME} MATCHES SunOS )
    482 
    483 # Make sure we don't get -rdynamic in every binary. For those that need it,
    484 # use set_target_properties(target PROPERTIES ENABLE_EXPORTS 1)
    485 set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "")
    486 
    487 include(AddLLVM)
    488 include(TableGen)
    489 
    490 if( MINGW )
    491   # People report that -O3 is unreliable on MinGW. The traditional
    492   # build also uses -O2 for that reason:
    493   llvm_replace_compiler_option(CMAKE_CXX_FLAGS_RELEASE "-O3" "-O2")
    494 endif()
    495 
    496 # Put this before tblgen. Else we have a circular dependence.
    497 add_subdirectory(lib/Support)
    498 add_subdirectory(lib/TableGen)
    499 
    500 add_subdirectory(utils/TableGen)
    501 
    502 add_subdirectory(include/llvm)
    503 
    504 add_subdirectory(lib)
    505 
    506 if( LLVM_INCLUDE_UTILS )
    507   add_subdirectory(utils/FileCheck)
    508   add_subdirectory(utils/PerfectShuffle)
    509   add_subdirectory(utils/count)
    510   add_subdirectory(utils/not)
    511   add_subdirectory(utils/llvm-lit)
    512   add_subdirectory(utils/yaml-bench)
    513 else()
    514   if ( LLVM_INCLUDE_TESTS )
    515     message(FATAL_ERROR "Including tests when not building utils will not work.
    516     Either set LLVM_INCLUDE_UTILS to On, or set LLVM_INCLDE_TESTS to Off.")
    517   endif()
    518 endif()
    519 
    520 if(LLVM_INCLUDE_TESTS)
    521   add_subdirectory(utils/unittest)
    522 endif()
    523 
    524 add_subdirectory(projects)
    525 
    526 if(WITH_POLLY)
    527   if(NOT EXISTS ${LLVM_MAIN_SRC_DIR}/tools/polly/CMakeLists.txt)
    528     set(WITH_POLLY OFF)
    529   endif()
    530 endif(WITH_POLLY)
    531 
    532 if( LLVM_INCLUDE_TOOLS )
    533   add_subdirectory(tools)
    534 endif()
    535 
    536 if( LLVM_INCLUDE_EXAMPLES )
    537   add_subdirectory(examples)
    538 endif()
    539 
    540 if( LLVM_INCLUDE_TESTS )
    541   add_subdirectory(test)
    542   add_subdirectory(unittests)
    543   if (MSVC)
    544     # This utility is used to prevent crashing tests from calling Dr. Watson on
    545     # Windows.
    546     add_subdirectory(utils/KillTheDoctor)
    547   endif()
    548 
    549   # Add a global check rule now that all subdirectories have been traversed
    550   # and we know the total set of lit testsuites.
    551   get_property(LLVM_LIT_TESTSUITES GLOBAL PROPERTY LLVM_LIT_TESTSUITES)
    552   get_property(LLVM_LIT_PARAMS GLOBAL PROPERTY LLVM_LIT_PARAMS)
    553   get_property(LLVM_LIT_DEPENDS GLOBAL PROPERTY LLVM_LIT_DEPENDS)
    554   get_property(LLVM_LIT_EXTRA_ARGS GLOBAL PROPERTY LLVM_LIT_EXTRA_ARGS)
    555   add_lit_target(check-all
    556     "Running all regression tests"
    557     ${LLVM_LIT_TESTSUITES}
    558     PARAMS ${LLVM_LIT_PARAMS}
    559     DEPENDS ${LLVM_LIT_DEPENDS}
    560     ARGS ${LLVM_LIT_EXTRA_ARGS}
    561     )
    562 endif()
    563 
    564 if (LLVM_INCLUDE_DOCS)
    565   add_subdirectory(docs)
    566 endif()
    567 
    568 add_subdirectory(cmake/modules)
    569 
    570 if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
    571   install(DIRECTORY include/llvm include/llvm-c
    572     DESTINATION include
    573     FILES_MATCHING
    574     PATTERN "*.def"
    575     PATTERN "*.h"
    576     PATTERN "*.td"
    577     PATTERN "*.inc"
    578     PATTERN "LICENSE.TXT"
    579     PATTERN ".svn" EXCLUDE
    580     )
    581 
    582   install(DIRECTORY ${LLVM_INCLUDE_DIR}/llvm
    583     DESTINATION include
    584     FILES_MATCHING
    585     PATTERN "*.def"
    586     PATTERN "*.h"
    587     PATTERN "*.gen"
    588     PATTERN "*.inc"
    589     # Exclude include/llvm/CMakeFiles/intrinsics_gen.dir, matched by "*.def"
    590     PATTERN "CMakeFiles" EXCLUDE
    591     PATTERN "config.h" EXCLUDE
    592     PATTERN ".svn" EXCLUDE
    593     )
    594 endif()
    595