CMakeLists.txt - platform/external/clang - Git at Google

 # If we are not building as a part of LLVM, build Clang as an
 # standalone project, using LLVM as an external library:
 if( CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR )
   project(Clang)
   cmake_minimum_required(VERSION 2.8)

   set(CLANG_PATH_TO_LLVM_SOURCE "" CACHE PATH
     "Path to LLVM source code. Not necessary if using an installed LLVM.")
   set(CLANG_PATH_TO_LLVM_BUILD "" CACHE PATH
     "Path to the directory where LLVM was built or installed.")

   if( CLANG_PATH_TO_LLVM_SOURCE )
     if( NOT EXISTS "${CLANG_PATH_TO_LLVM_SOURCE}/cmake/config-ix.cmake" )
       message(FATAL_ERROR "Please set CLANG_PATH_TO_LLVM_SOURCE to the root directory of LLVM source code.")
     else()
       get_filename_component(LLVM_MAIN_SRC_DIR ${CLANG_PATH_TO_LLVM_SOURCE}
 	ABSOLUTE)
       list(APPEND CMAKE_MODULE_PATH "${LLVM_MAIN_SRC_DIR}/cmake/modules")
     endif()
   endif()

   if( NOT EXISTS "${CLANG_PATH_TO_LLVM_BUILD}/bin/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}" )
     # Looking for bin/Debug/llvm-tblgen is a complete hack. How can we get
     # around this?
     if( NOT EXISTS "${CLANG_PATH_TO_LLVM_BUILD}/bin/Debug/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}" )
       message(FATAL_ERROR "Please set CLANG_PATH_TO_LLVM_BUILD to a directory containing a LLVM build.")
     endif()
   endif()

   list(APPEND CMAKE_MODULE_PATH "${CLANG_PATH_TO_LLVM_BUILD}/share/llvm/cmake")

   get_filename_component(PATH_TO_LLVM_BUILD ${CLANG_PATH_TO_LLVM_BUILD}
     ABSOLUTE)

   include(AddLLVM)
   include(TableGen)
   include("${CLANG_PATH_TO_LLVM_BUILD}/share/llvm/cmake/LLVMConfig.cmake")
   include(HandleLLVMOptions)

   set(PACKAGE_VERSION "${LLVM_PACKAGE_VERSION}")

   set(LLVM_MAIN_INCLUDE_DIR "${LLVM_MAIN_SRC_DIR}/include")
   set(LLVM_BINARY_DIR ${CMAKE_BINARY_DIR})

   set(CMAKE_INCLUDE_CURRENT_DIR ON)
   include_directories("${PATH_TO_LLVM_BUILD}/include" "${LLVM_MAIN_INCLUDE_DIR}")
   link_directories("${PATH_TO_LLVM_BUILD}/lib")

   if( EXISTS "${CLANG_PATH_TO_LLVM_BUILD}/bin/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}" )
     set(LLVM_TABLEGEN_EXE "${PATH_TO_LLVM_BUILD}/bin/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}")
   else()
     # FIXME: This is an utter hack.
     set(LLVM_TABLEGEN_EXE "${PATH_TO_LLVM_BUILD}/bin/Debug/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}")
   endif()

   # Define the default arguments to use with 'lit', and an option for the user
   # to override.
   set(LIT_ARGS_DEFAULT "-sv")
   if (MSVC 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")

   set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin )
   set( CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib )
   set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib )

   set( CLANG_BUILT_STANDALONE 1 )

   find_package(LibXml2)
   if (LIBXML2_FOUND)
     set(CLANG_HAVE_LIBXML 1)
   endif ()
 endif()

 set(CLANG_RESOURCE_DIR "" CACHE STRING
   "Relative directory from the Clang binary to its resource files.")

 set(C_INCLUDE_DIRS "" CACHE STRING
   "Colon separated list of directories clang will search for headers.")

 set(GCC_INSTALL_PREFIX "" CACHE PATH "Directory where gcc is installed." )
 set(DEFAULT_SYSROOT "" CACHE PATH
   "Default <path> to all compiler invocations for --sysroot=<path>." )

 set(CLANG_VENDOR "" CACHE STRING
   "Vendor-specific text for showing with version information.")

 if( CLANG_VENDOR )
   add_definitions( -DCLANG_VENDOR="${CLANG_VENDOR} " )
 endif()

 set(CLANG_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
 set(CLANG_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})

 if( CMAKE_SOURCE_DIR STREQUAL CMAKE_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
     "${CLANG_SOURCE_DIR}/include/clang/*.inc")
   if( tablegenned_files_on_include_dir )
     message(FATAL_ERROR "Apparently there is a previous in-source build, "
 "probably as the result of running `configure' and `make' on "
 "${CLANG_SOURCE_DIR}. This may cause problems. The suspicious files are:\n"
 "${tablegenned_files_on_include_dir}\nPlease clean the source directory.")
   endif()
 endif()

 # Compute the Clang version from the LLVM version.
 string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" CLANG_VERSION
   ${PACKAGE_VERSION})
 message(STATUS "Clang version: ${CLANG_VERSION}")

 string(REGEX REPLACE "([0-9]+)\\.[0-9]+(\\.[0-9]+)?" "\\1" CLANG_VERSION_MAJOR
   ${CLANG_VERSION})
 string(REGEX REPLACE "[0-9]+\\.([0-9]+)(\\.[0-9]+)?" "\\1" CLANG_VERSION_MINOR
   ${CLANG_VERSION})
 if (${CLANG_VERSION} MATCHES "[0-9]+\\.[0-9]+\\.[0-9]+")
   set(CLANG_HAS_VERSION_PATCHLEVEL 1)
   string(REGEX REPLACE "[0-9]+\\.[0-9]+\\.([0-9]+)" "\\1" CLANG_VERSION_PATCHLEVEL
     ${CLANG_VERSION})
 else()
   set(CLANG_HAS_VERSION_PATCHLEVEL 0)
 endif()

 # Configure the Version.inc file.
 configure_file(
   ${CMAKE_CURRENT_SOURCE_DIR}/include/clang/Basic/Version.inc.in
   ${CMAKE_CURRENT_BINARY_DIR}/include/clang/Basic/Version.inc)

 # Add appropriate flags for GCC
 if (LLVM_COMPILER_IS_GCC_COMPATIBLE)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-common -Woverloaded-virtual -Wcast-qual -fno-strict-aliasing -pedantic -Wno-long-long -Wall -W -Wno-unused-parameter -Wwrite-strings")

   check_cxx_compiler_flag("-Werror -Wnested-anon-types" CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG)
   if( CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG )
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-nested-anon-types" )
   endif()
 endif ()

 if (APPLE)
   set(CMAKE_MODULE_LINKER_FLAGS "-Wl,-flat_namespace -Wl,-undefined -Wl,suppress")
 endif ()

 configure_file(
   ${CLANG_SOURCE_DIR}/include/clang/Config/config.h.cmake
   ${CLANG_BINARY_DIR}/include/clang/Config/config.h)

 include(LLVMParseArguments)

 function(clang_tablegen)
   # Syntax:
   # clang_tablegen output-file [tablegen-arg ...] SOURCE source-file
   # [[TARGET cmake-target-name] [DEPENDS extra-dependency ...]]
   #
   # Generates a custom command for invoking tblgen as
   #
   # tblgen source-file -o=output-file tablegen-arg ...
   #
   # and, if cmake-target-name is provided, creates a custom target for
   # executing the custom command depending on output-file. It is
   # possible to list more files to depend after DEPENDS.

   parse_arguments( CTG "SOURCE;TARGET;DEPENDS" "" ${ARGN} )

   if( NOT CTG_SOURCE )
     message(FATAL_ERROR "SOURCE source-file required by clang_tablegen")
   endif()

   set( LLVM_TARGET_DEFINITIONS ${CTG_SOURCE} )
   tablegen( CLANG ${CTG_DEFAULT_ARGS} )

   list( GET CTG_DEFAULT_ARGS 0 output_file )
   if( CTG_TARGET )
     add_custom_target( ${CTG_TARGET} DEPENDS ${output_file} ${CTG_DEPENDS} )
     set_target_properties( ${CTG_TARGET} PROPERTIES FOLDER "Clang tablegenning")
   endif()
 endfunction(clang_tablegen)

 macro(add_clang_library name)
   llvm_process_sources(srcs ${ARGN})
   if(MSVC_IDE OR XCODE)
     # Add public headers
     file(RELATIVE_PATH lib_path
       ${CLANG_SOURCE_DIR}/lib/
       ${CMAKE_CURRENT_SOURCE_DIR}
     )
     if(NOT lib_path MATCHES "^[.][.]")
       file( GLOB_RECURSE headers
         ${CLANG_SOURCE_DIR}/include/clang/${lib_path}/*.h
         ${CLANG_SOURCE_DIR}/include/clang/${lib_path}/*.def
       )
       set_source_files_properties(${headers} PROPERTIES HEADER_FILE_ONLY ON)

       file( GLOB_RECURSE tds
         ${CLANG_SOURCE_DIR}/include/clang/${lib_path}/*.td
       )
       source_group("TableGen descriptions" FILES ${tds})
       set_source_files_properties(${tds}} PROPERTIES HEADER_FILE_ONLY ON)

       set(srcs ${srcs} ${headers} ${tds})
     endif()
   endif(MSVC_IDE OR XCODE)
   if (MODULE)
     set(libkind MODULE)
   elseif (SHARED_LIBRARY)
     set(libkind SHARED)
   else()
     set(libkind)
   endif()
   add_library( ${name} ${libkind} ${srcs} )
   if( LLVM_COMMON_DEPENDS )
     add_dependencies( ${name} ${LLVM_COMMON_DEPENDS} )
   endif( LLVM_COMMON_DEPENDS )

   llvm_config( ${name} ${LLVM_LINK_COMPONENTS} )
   target_link_libraries( ${name} ${LLVM_COMMON_LIBS} )
   link_system_libs( ${name} )

   install(TARGETS ${name}
     LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX}
     ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX}
     RUNTIME DESTINATION bin)
   set_target_properties(${name} PROPERTIES FOLDER "Clang libraries")
 endmacro(add_clang_library)

 macro(add_clang_executable name)
   add_llvm_executable( ${name} ${ARGN} )
   set_target_properties(${name} PROPERTIES FOLDER "Clang executables")
 endmacro(add_clang_executable)

 include_directories(BEFORE
   ${CMAKE_CURRENT_BINARY_DIR}/include
   ${CMAKE_CURRENT_SOURCE_DIR}/include
   )

 install(DIRECTORY include/
   DESTINATION include
   FILES_MATCHING
   PATTERN "*.def"
   PATTERN "*.h"
   PATTERN "config.h" EXCLUDE
   PATTERN ".svn" EXCLUDE
   )

 install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/include/
   DESTINATION include
   FILES_MATCHING
   PATTERN "CMakeFiles" EXCLUDE
   PATTERN "*.inc"
   )

 add_definitions( -D_GNU_SOURCE )

 # FIXME: They should be options.
 add_definitions(-DCLANG_ENABLE_ARCMT -DCLANG_ENABLE_REWRITER -DCLANG_ENABLE_STATIC_ANALYZER)

 # Clang version information
 set(CLANG_EXECUTABLE_VERSION
      "${CLANG_VERSION_MAJOR}.${CLANG_VERSION_MINOR}" CACHE STRING
     "Version number that will be placed into the clang executable, in the form XX.YY")
 set(LIBCLANG_LIBRARY_VERSION
      "${CLANG_VERSION_MAJOR}.${CLANG_VERSION_MINOR}" CACHE STRING
     "Version number that will be placed into the libclang library , in the form XX.YY")
 mark_as_advanced(CLANG_EXECUTABLE_VERSION LIBCLANG_LIBRARY_VERSION)

 add_subdirectory(utils/TableGen)

 add_subdirectory(include)
 add_subdirectory(lib)
 add_subdirectory(tools)
 add_subdirectory(runtime)

 option(CLANG_BUILD_EXAMPLES "Build CLANG example programs by default." OFF)
 add_subdirectory(examples)

 option(CLANG_INCLUDE_TESTS
        "Generate build targets for the Clang unit tests."
        ${LLVM_INCLUDE_TESTS})

 # TODO: docs.
 add_subdirectory(test)

 if( CLANG_INCLUDE_TESTS )
   add_subdirectory(unittests)
 endif()

 # Workaround for MSVS10 to avoid the Dialog Hell
 # FIXME: This could be removed with future version of CMake.
 if( CLANG_BUILT_STANDALONE AND MSVC_VERSION EQUAL 1600 )
   set(CLANG_SLN_FILENAME "${CMAKE_CURRENT_BINARY_DIR}/Clang.sln")
   if( EXISTS "${CLANG_SLN_FILENAME}" )
     file(APPEND "${CLANG_SLN_FILENAME}" "\n# This should be regenerated!\n")
   endif()
 endif()

 set(BUG_REPORT_URL "http://llvm.org/bugs/" CACHE STRING
   "Default URL where bug reports are to be submitted.")
	# If we are not building as a part of LLVM, build Clang as an
	# standalone project, using LLVM as an external library:
	if( CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR )
	project(Clang)
	cmake_minimum_required(VERSION 2.8)

	set(CLANG_PATH_TO_LLVM_SOURCE "" CACHE PATH
	"Path to LLVM source code. Not necessary if using an installed LLVM.")
	set(CLANG_PATH_TO_LLVM_BUILD "" CACHE PATH
	"Path to the directory where LLVM was built or installed.")

	if( CLANG_PATH_TO_LLVM_SOURCE )
	if( NOT EXISTS "${CLANG_PATH_TO_LLVM_SOURCE}/cmake/config-ix.cmake" )
	message(FATAL_ERROR "Please set CLANG_PATH_TO_LLVM_SOURCE to the root directory of LLVM source code.")
	else()
	get_filename_component(LLVM_MAIN_SRC_DIR ${CLANG_PATH_TO_LLVM_SOURCE}
	ABSOLUTE)
	list(APPEND CMAKE_MODULE_PATH "${LLVM_MAIN_SRC_DIR}/cmake/modules")
	endif()
	endif()

	if( NOT EXISTS "${CLANG_PATH_TO_LLVM_BUILD}/bin/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}" )
	# Looking for bin/Debug/llvm-tblgen is a complete hack. How can we get
	# around this?
	if( NOT EXISTS "${CLANG_PATH_TO_LLVM_BUILD}/bin/Debug/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}" )
	message(FATAL_ERROR "Please set CLANG_PATH_TO_LLVM_BUILD to a directory containing a LLVM build.")
	endif()
	endif()

	list(APPEND CMAKE_MODULE_PATH "${CLANG_PATH_TO_LLVM_BUILD}/share/llvm/cmake")

	get_filename_component(PATH_TO_LLVM_BUILD ${CLANG_PATH_TO_LLVM_BUILD}
	ABSOLUTE)

	include(AddLLVM)
	include(TableGen)
	include("${CLANG_PATH_TO_LLVM_BUILD}/share/llvm/cmake/LLVMConfig.cmake")
	include(HandleLLVMOptions)

	set(PACKAGE_VERSION "${LLVM_PACKAGE_VERSION}")

	set(LLVM_MAIN_INCLUDE_DIR "${LLVM_MAIN_SRC_DIR}/include")
	set(LLVM_BINARY_DIR ${CMAKE_BINARY_DIR})

	set(CMAKE_INCLUDE_CURRENT_DIR ON)
	include_directories("${PATH_TO_LLVM_BUILD}/include" "${LLVM_MAIN_INCLUDE_DIR}")
	link_directories("${PATH_TO_LLVM_BUILD}/lib")

	if( EXISTS "${CLANG_PATH_TO_LLVM_BUILD}/bin/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}" )
	set(LLVM_TABLEGEN_EXE "${PATH_TO_LLVM_BUILD}/bin/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}")
	else()
	# FIXME: This is an utter hack.
	set(LLVM_TABLEGEN_EXE "${PATH_TO_LLVM_BUILD}/bin/Debug/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}")
	endif()

	# Define the default arguments to use with 'lit', and an option for the user
	# to override.
	set(LIT_ARGS_DEFAULT "-sv")
	if (MSVC 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")

	set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin )
	set( CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib )
	set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib )

	set( CLANG_BUILT_STANDALONE 1 )

	find_package(LibXml2)
	if (LIBXML2_FOUND)
	set(CLANG_HAVE_LIBXML 1)
	endif ()
	endif()

	set(CLANG_RESOURCE_DIR "" CACHE STRING
	"Relative directory from the Clang binary to its resource files.")

	set(C_INCLUDE_DIRS "" CACHE STRING
	"Colon separated list of directories clang will search for headers.")

	set(GCC_INSTALL_PREFIX "" CACHE PATH "Directory where gcc is installed." )
	set(DEFAULT_SYSROOT "" CACHE PATH
	"Default <path> to all compiler invocations for --sysroot=<path>." )

	set(CLANG_VENDOR "" CACHE STRING
	"Vendor-specific text for showing with version information.")

	if( CLANG_VENDOR )
	add_definitions( -DCLANG_VENDOR="${CLANG_VENDOR} " )
	endif()

	set(CLANG_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
	set(CLANG_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})

	if( CMAKE_SOURCE_DIR STREQUAL CMAKE_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
	"${CLANG_SOURCE_DIR}/include/clang/*.inc")
	if( tablegenned_files_on_include_dir )
	message(FATAL_ERROR "Apparently there is a previous in-source build, "
	"probably as the result of running `configure' and `make' on "
	"${CLANG_SOURCE_DIR}. This may cause problems. The suspicious files are:\n"
	"${tablegenned_files_on_include_dir}\nPlease clean the source directory.")
	endif()
	endif()

	# Compute the Clang version from the LLVM version.
	string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" CLANG_VERSION
	${PACKAGE_VERSION})
	message(STATUS "Clang version: ${CLANG_VERSION}")

	string(REGEX REPLACE "([0-9]+)\\.[0-9]+(\\.[0-9]+)?" "\\1" CLANG_VERSION_MAJOR
	${CLANG_VERSION})
	string(REGEX REPLACE "[0-9]+\\.([0-9]+)(\\.[0-9]+)?" "\\1" CLANG_VERSION_MINOR
	${CLANG_VERSION})
	if (${CLANG_VERSION} MATCHES "[0-9]+\\.[0-9]+\\.[0-9]+")
	set(CLANG_HAS_VERSION_PATCHLEVEL 1)
	string(REGEX REPLACE "[0-9]+\\.[0-9]+\\.([0-9]+)" "\\1" CLANG_VERSION_PATCHLEVEL
	${CLANG_VERSION})
	else()
	set(CLANG_HAS_VERSION_PATCHLEVEL 0)
	endif()

	# Configure the Version.inc file.
	configure_file(
	${CMAKE_CURRENT_SOURCE_DIR}/include/clang/Basic/Version.inc.in
	${CMAKE_CURRENT_BINARY_DIR}/include/clang/Basic/Version.inc)

	# Add appropriate flags for GCC
	if (LLVM_COMPILER_IS_GCC_COMPATIBLE)
	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-common -Woverloaded-virtual -Wcast-qual -fno-strict-aliasing -pedantic -Wno-long-long -Wall -W -Wno-unused-parameter -Wwrite-strings")

	check_cxx_compiler_flag("-Werror -Wnested-anon-types" CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG)
	if( CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG )
	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-nested-anon-types" )
	endif()
	endif ()

	if (APPLE)
	set(CMAKE_MODULE_LINKER_FLAGS "-Wl,-flat_namespace -Wl,-undefined -Wl,suppress")
	endif ()

	configure_file(
	${CLANG_SOURCE_DIR}/include/clang/Config/config.h.cmake
	${CLANG_BINARY_DIR}/include/clang/Config/config.h)

	include(LLVMParseArguments)

	function(clang_tablegen)
	# Syntax:
	# clang_tablegen output-file [tablegen-arg ...] SOURCE source-file
	# [[TARGET cmake-target-name] [DEPENDS extra-dependency ...]]
	#
	# Generates a custom command for invoking tblgen as
	#
	# tblgen source-file -o=output-file tablegen-arg ...
	#
	# and, if cmake-target-name is provided, creates a custom target for
	# executing the custom command depending on output-file. It is
	# possible to list more files to depend after DEPENDS.

	parse_arguments( CTG "SOURCE;TARGET;DEPENDS" "" ${ARGN} )

	if( NOT CTG_SOURCE )
	message(FATAL_ERROR "SOURCE source-file required by clang_tablegen")
	endif()

	set( LLVM_TARGET_DEFINITIONS ${CTG_SOURCE} )
	tablegen( CLANG ${CTG_DEFAULT_ARGS} )

	list( GET CTG_DEFAULT_ARGS 0 output_file )
	if( CTG_TARGET )
	add_custom_target( ${CTG_TARGET} DEPENDS ${output_file} ${CTG_DEPENDS} )
	set_target_properties( ${CTG_TARGET} PROPERTIES FOLDER "Clang tablegenning")
	endif()
	endfunction(clang_tablegen)

	macro(add_clang_library name)
	llvm_process_sources(srcs ${ARGN})
	if(MSVC_IDE OR XCODE)
	# Add public headers
	file(RELATIVE_PATH lib_path
	${CLANG_SOURCE_DIR}/lib/
	${CMAKE_CURRENT_SOURCE_DIR}
	)
	if(NOT lib_path MATCHES "^[.][.]")
	file( GLOB_RECURSE headers
	${CLANG_SOURCE_DIR}/include/clang/${lib_path}/*.h
	${CLANG_SOURCE_DIR}/include/clang/${lib_path}/*.def
	)
	set_source_files_properties(${headers} PROPERTIES HEADER_FILE_ONLY ON)

	file( GLOB_RECURSE tds
	${CLANG_SOURCE_DIR}/include/clang/${lib_path}/*.td
	)
	source_group("TableGen descriptions" FILES ${tds})
	set_source_files_properties(${tds}} PROPERTIES HEADER_FILE_ONLY ON)

	set(srcs ${srcs} ${headers} ${tds})
	endif()
	endif(MSVC_IDE OR XCODE)
	if (MODULE)
	set(libkind MODULE)
	elseif (SHARED_LIBRARY)
	set(libkind SHARED)
	else()
	set(libkind)
	endif()
	add_library( ${name} ${libkind} ${srcs} )
	if( LLVM_COMMON_DEPENDS )
	add_dependencies( ${name} ${LLVM_COMMON_DEPENDS} )
	endif( LLVM_COMMON_DEPENDS )

	llvm_config( ${name} ${LLVM_LINK_COMPONENTS} )
	target_link_libraries( ${name} ${LLVM_COMMON_LIBS} )
	link_system_libs( ${name} )

	install(TARGETS ${name}
	LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX}
	ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX}
	RUNTIME DESTINATION bin)
	set_target_properties(${name} PROPERTIES FOLDER "Clang libraries")
	endmacro(add_clang_library)

	macro(add_clang_executable name)
	add_llvm_executable( ${name} ${ARGN} )
	set_target_properties(${name} PROPERTIES FOLDER "Clang executables")
	endmacro(add_clang_executable)

	include_directories(BEFORE
	${CMAKE_CURRENT_BINARY_DIR}/include
	${CMAKE_CURRENT_SOURCE_DIR}/include
	)

	install(DIRECTORY include/
	DESTINATION include
	FILES_MATCHING
	PATTERN "*.def"
	PATTERN "*.h"
	PATTERN "config.h" EXCLUDE
	PATTERN ".svn" EXCLUDE
	)

	install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/include/
	DESTINATION include
	FILES_MATCHING
	PATTERN "CMakeFiles" EXCLUDE
	PATTERN "*.inc"
	)

	add_definitions( -D_GNU_SOURCE )

	# FIXME: They should be options.
	add_definitions(-DCLANG_ENABLE_ARCMT -DCLANG_ENABLE_REWRITER -DCLANG_ENABLE_STATIC_ANALYZER)

	# Clang version information
	set(CLANG_EXECUTABLE_VERSION
	"${CLANG_VERSION_MAJOR}.${CLANG_VERSION_MINOR}" CACHE STRING
	"Version number that will be placed into the clang executable, in the form XX.YY")
	set(LIBCLANG_LIBRARY_VERSION
	"${CLANG_VERSION_MAJOR}.${CLANG_VERSION_MINOR}" CACHE STRING
	"Version number that will be placed into the libclang library , in the form XX.YY")
	mark_as_advanced(CLANG_EXECUTABLE_VERSION LIBCLANG_LIBRARY_VERSION)

	add_subdirectory(utils/TableGen)

	add_subdirectory(include)
	add_subdirectory(lib)
	add_subdirectory(tools)
	add_subdirectory(runtime)

	option(CLANG_BUILD_EXAMPLES "Build CLANG example programs by default." OFF)
	add_subdirectory(examples)

	option(CLANG_INCLUDE_TESTS
	"Generate build targets for the Clang unit tests."
	${LLVM_INCLUDE_TESTS})

	# TODO: docs.
	add_subdirectory(test)

	if( CLANG_INCLUDE_TESTS )
	add_subdirectory(unittests)
	endif()

	# Workaround for MSVS10 to avoid the Dialog Hell
	# FIXME: This could be removed with future version of CMake.
	if( CLANG_BUILT_STANDALONE AND MSVC_VERSION EQUAL 1600 )
	set(CLANG_SLN_FILENAME "${CMAKE_CURRENT_BINARY_DIR}/Clang.sln")
	if( EXISTS "${CLANG_SLN_FILENAME}" )
	file(APPEND "${CLANG_SLN_FILENAME}" "\n# This should be regenerated!\n")
	endif()
	endif()

	set(BUG_REPORT_URL "http://llvm.org/bugs/" CACHE STRING
	"Default URL where bug reports are to be submitted.")