1# If we are not building as a part of LLVM, build Clang as an 2# standalone project, using LLVM as an external library: 3if( CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR ) 4 project(Clang) 5 cmake_minimum_required(VERSION 2.8) 6 7 set(CLANG_PATH_TO_LLVM_SOURCE "" CACHE PATH 8 "Path to LLVM source code. Not necessary if using an installed LLVM.") 9 set(CLANG_PATH_TO_LLVM_BUILD "" CACHE PATH 10 "Path to the directory where LLVM was built or installed.") 11 12 if( CLANG_PATH_TO_LLVM_SOURCE ) 13 if( NOT EXISTS "${CLANG_PATH_TO_LLVM_SOURCE}/cmake/config-ix.cmake" ) 14 message(FATAL_ERROR "Please set CLANG_PATH_TO_LLVM_SOURCE to the root directory of LLVM source code.") 15 else() 16 get_filename_component(LLVM_MAIN_SRC_DIR ${CLANG_PATH_TO_LLVM_SOURCE} 17 ABSOLUTE) 18 list(APPEND CMAKE_MODULE_PATH "${LLVM_MAIN_SRC_DIR}/cmake/modules") 19 endif() 20 endif() 21 22 if (EXISTS "${CLANG_PATH_TO_LLVM_BUILD}/bin/llvm-config${CMAKE_EXECUTABLE_SUFFIX}") 23 set (PATH_TO_LLVM_CONFIG "${CLANG_PATH_TO_LLVM_BUILD}/bin/llvm-config${CMAKE_EXECUTABLE_SUFFIX}") 24 elseif (EXISTS "${CLANG_PATH_TO_LLVM_BUILD}/bin/Debug/llvm-config${CMAKE_EXECUTABLE_SUFFIX}") 25 # Looking for bin/Debug/llvm-config is a complete hack. How can we get 26 # around this? 27 set (PATH_TO_LLVM_CONFIG "${CLANG_PATH_TO_LLVM_BUILD}/bin/Debug/llvm-config${CMAKE_EXECUTABLE_SUFFIX}") 28 else() 29 message(FATAL_ERROR "Please set CLANG_PATH_TO_LLVM_BUILD to a directory containing a LLVM build.") 30 endif() 31 32 list(APPEND CMAKE_MODULE_PATH "${CLANG_PATH_TO_LLVM_BUILD}/share/llvm/cmake") 33 34 get_filename_component(PATH_TO_LLVM_BUILD ${CLANG_PATH_TO_LLVM_BUILD} 35 ABSOLUTE) 36 37 option(LLVM_INSTALL_TOOLCHAIN_ONLY "Only include toolchain files in the 'install' target." OFF) 38 39 include(AddLLVM) 40 include(TableGen) 41 include("${CLANG_PATH_TO_LLVM_BUILD}/share/llvm/cmake/LLVMConfig.cmake") 42 include(HandleLLVMOptions) 43 44 set(PACKAGE_VERSION "${LLVM_PACKAGE_VERSION}") 45 46 set(LLVM_MAIN_INCLUDE_DIR "${LLVM_MAIN_SRC_DIR}/include") 47 set(LLVM_BINARY_DIR ${CMAKE_BINARY_DIR}) 48 49 set(CMAKE_INCLUDE_CURRENT_DIR ON) 50 include_directories("${PATH_TO_LLVM_BUILD}/include" "${LLVM_MAIN_INCLUDE_DIR}") 51 link_directories("${PATH_TO_LLVM_BUILD}/lib") 52 53 exec_program("${PATH_TO_LLVM_CONFIG} --bindir" OUTPUT_VARIABLE LLVM_BINARY_DIR) 54 set(LLVM_TABLEGEN_EXE "${LLVM_BINARY_DIR}/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}") 55 56 # Define the default arguments to use with 'lit', and an option for the user 57 # to override. 58 set(LIT_ARGS_DEFAULT "-sv") 59 if (MSVC OR XCODE) 60 set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar") 61 endif() 62 set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit") 63 64 set( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin ) 65 set( CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib ) 66 set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib ) 67 68 set( CLANG_BUILT_STANDALONE 1 ) 69 70 find_package(LibXml2) 71 if (LIBXML2_FOUND) 72 set(CLANG_HAVE_LIBXML 1) 73 endif () 74endif() 75 76set(CLANG_RESOURCE_DIR "" CACHE STRING 77 "Relative directory from the Clang binary to its resource files.") 78 79set(C_INCLUDE_DIRS "" CACHE STRING 80 "Colon separated list of directories clang will search for headers.") 81 82set(GCC_INSTALL_PREFIX "" CACHE PATH "Directory where gcc is installed." ) 83set(DEFAULT_SYSROOT "" CACHE PATH 84 "Default <path> to all compiler invocations for --sysroot=<path>." ) 85 86set(CLANG_VENDOR "" CACHE STRING 87 "Vendor-specific text for showing with version information.") 88 89if( CLANG_VENDOR ) 90 add_definitions( -DCLANG_VENDOR="${CLANG_VENDOR} " ) 91endif() 92 93set(CLANG_REPOSITORY_STRING "" CACHE STRING 94 "Vendor-specific text for showing the repository the source is taken from.") 95 96if(CLANG_REPOSITORY_STRING) 97 add_definitions(-DCLANG_REPOSITORY_STRING="${CLANG_REPOSITORY_STRING}") 98endif() 99 100set(CLANG_VENDOR_UTI "org.llvm.clang" CACHE STRING 101 "Vendor-specific uti.") 102 103set(CLANG_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) 104set(CLANG_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) 105 106if( CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR AND NOT MSVC_IDE ) 107 message(FATAL_ERROR "In-source builds are not allowed. CMake would overwrite " 108"the makefiles distributed with LLVM. Please create a directory and run cmake " 109"from there, passing the path to this source directory as the last argument. " 110"This process created the file `CMakeCache.txt' and the directory " 111"`CMakeFiles'. Please delete them.") 112endif() 113 114if( NOT CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR ) 115 file(GLOB_RECURSE 116 tablegenned_files_on_include_dir 117 "${CLANG_SOURCE_DIR}/include/clang/*.inc") 118 if( tablegenned_files_on_include_dir ) 119 message(FATAL_ERROR "Apparently there is a previous in-source build, " 120"probably as the result of running `configure' and `make' on " 121"${CLANG_SOURCE_DIR}. This may cause problems. The suspicious files are:\n" 122"${tablegenned_files_on_include_dir}\nPlease clean the source directory.") 123 endif() 124endif() 125 126# Compute the Clang version from the LLVM version. 127string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" CLANG_VERSION 128 ${PACKAGE_VERSION}) 129message(STATUS "Clang version: ${CLANG_VERSION}") 130 131string(REGEX REPLACE "([0-9]+)\\.[0-9]+(\\.[0-9]+)?" "\\1" CLANG_VERSION_MAJOR 132 ${CLANG_VERSION}) 133string(REGEX REPLACE "[0-9]+\\.([0-9]+)(\\.[0-9]+)?" "\\1" CLANG_VERSION_MINOR 134 ${CLANG_VERSION}) 135if (${CLANG_VERSION} MATCHES "[0-9]+\\.[0-9]+\\.[0-9]+") 136 set(CLANG_HAS_VERSION_PATCHLEVEL 1) 137 string(REGEX REPLACE "[0-9]+\\.[0-9]+\\.([0-9]+)" "\\1" CLANG_VERSION_PATCHLEVEL 138 ${CLANG_VERSION}) 139else() 140 set(CLANG_HAS_VERSION_PATCHLEVEL 0) 141endif() 142 143# Configure the Version.inc file. 144configure_file( 145 ${CMAKE_CURRENT_SOURCE_DIR}/include/clang/Basic/Version.inc.in 146 ${CMAKE_CURRENT_BINARY_DIR}/include/clang/Basic/Version.inc) 147 148# Add appropriate flags for GCC 149if (LLVM_COMPILER_IS_GCC_COMPATIBLE) 150 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-common -Woverloaded-virtual -Wcast-qual -fno-strict-aliasing") 151 152 # Enable -pedantic for Clang even if it's not enabled for LLVM. 153 if (NOT LLVM_ENABLE_PEDANTIC) 154 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic -Wno-long-long") 155 endif () 156 157 check_cxx_compiler_flag("-Werror -Wnested-anon-types" CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG) 158 if( CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG ) 159 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-nested-anon-types" ) 160 endif() 161endif () 162 163if (APPLE) 164 set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,-flat_namespace -Wl,-undefined -Wl,suppress") 165endif () 166 167configure_file( 168 ${CLANG_SOURCE_DIR}/include/clang/Config/config.h.cmake 169 ${CLANG_BINARY_DIR}/include/clang/Config/config.h) 170 171include(LLVMParseArguments) 172 173function(clang_tablegen) 174 # Syntax: 175 # clang_tablegen output-file [tablegen-arg ...] SOURCE source-file 176 # [[TARGET cmake-target-name] [DEPENDS extra-dependency ...]] 177 # 178 # Generates a custom command for invoking tblgen as 179 # 180 # tblgen source-file -o=output-file tablegen-arg ... 181 # 182 # and, if cmake-target-name is provided, creates a custom target for 183 # executing the custom command depending on output-file. It is 184 # possible to list more files to depend after DEPENDS. 185 186 parse_arguments( CTG "SOURCE;TARGET;DEPENDS" "" ${ARGN} ) 187 188 if( NOT CTG_SOURCE ) 189 message(FATAL_ERROR "SOURCE source-file required by clang_tablegen") 190 endif() 191 192 set( LLVM_TARGET_DEFINITIONS ${CTG_SOURCE} ) 193 tablegen( CLANG ${CTG_DEFAULT_ARGS} ) 194 195 list( GET CTG_DEFAULT_ARGS 0 output_file ) 196 if( CTG_TARGET ) 197 add_custom_target( ${CTG_TARGET} DEPENDS ${output_file} ${CTG_DEPENDS} ) 198 set_target_properties( ${CTG_TARGET} PROPERTIES FOLDER "Clang tablegenning") 199 endif() 200endfunction(clang_tablegen) 201 202# FIXME: Generalize and move to llvm. 203function(add_clang_symbol_exports target_name export_file) 204 # Makefile.rules contains special cases for different platforms. 205 # We restrict ourselves to Darwin for the time being. 206 if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin") 207 add_custom_command(OUTPUT symbol.exports 208 COMMAND sed -e "s/^/_/" < ${export_file} > symbol.exports 209 DEPENDS ${export_file} 210 VERBATIM 211 COMMENT "Creating export file for ${target_name}") 212 add_custom_target(${target_name}_exports DEPENDS symbol.exports) 213 set_property(DIRECTORY APPEND 214 PROPERTY ADDITIONAL_MAKE_CLEAN_FILES symbol.exports) 215 216 get_property(srcs TARGET ${target_name} PROPERTY SOURCES) 217 foreach(src ${srcs}) 218 get_filename_component(extension ${src} EXT) 219 if(extension STREQUAL ".cpp") 220 set(first_source_file ${src}) 221 break() 222 endif() 223 endforeach() 224 225 # Force re-linking when the exports file changes. Actually, it 226 # forces recompilation of the source file. The LINK_DEPENDS target 227 # property only works for makefile-based generators. 228 set_property(SOURCE ${first_source_file} APPEND PROPERTY 229 OBJECT_DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/symbol.exports) 230 231 set_property(TARGET ${target_name} APPEND_STRING PROPERTY 232 LINK_FLAGS " -Wl,-exported_symbols_list,${CMAKE_CURRENT_BINARY_DIR}/symbol.exports") 233 add_dependencies(${target_name} ${target_name}_exports) 234 endif() 235endfunction(add_clang_symbol_exports) 236 237macro(add_clang_library name) 238 llvm_process_sources(srcs ${ARGN}) 239 if(MSVC_IDE OR XCODE) 240 # Add public headers 241 file(RELATIVE_PATH lib_path 242 ${CLANG_SOURCE_DIR}/lib/ 243 ${CMAKE_CURRENT_SOURCE_DIR} 244 ) 245 if(NOT lib_path MATCHES "^[.][.]") 246 file( GLOB_RECURSE headers 247 ${CLANG_SOURCE_DIR}/include/clang/${lib_path}/*.h 248 ${CLANG_SOURCE_DIR}/include/clang/${lib_path}/*.def 249 ) 250 set_source_files_properties(${headers} PROPERTIES HEADER_FILE_ONLY ON) 251 252 file( GLOB_RECURSE tds 253 ${CLANG_SOURCE_DIR}/include/clang/${lib_path}/*.td 254 ) 255 source_group("TableGen descriptions" FILES ${tds}) 256 set_source_files_properties(${tds}} PROPERTIES HEADER_FILE_ONLY ON) 257 258 set(srcs ${srcs} ${headers} ${tds}) 259 endif() 260 endif(MSVC_IDE OR XCODE) 261 if (MODULE) 262 set(libkind MODULE) 263 elseif (SHARED_LIBRARY) 264 set(libkind SHARED) 265 else() 266 set(libkind) 267 endif() 268 add_library( ${name} ${libkind} ${srcs} ) 269 if( LLVM_COMMON_DEPENDS ) 270 add_dependencies( ${name} ${LLVM_COMMON_DEPENDS} ) 271 endif( LLVM_COMMON_DEPENDS ) 272 273 llvm_config( ${name} ${LLVM_LINK_COMPONENTS} ) 274 target_link_libraries( ${name} ${LLVM_COMMON_LIBS} ) 275 link_system_libs( ${name} ) 276 277 if (SHARED_LIBRARY AND EXPORTED_SYMBOL_FILE) 278 add_clang_symbol_exports( ${name} ${EXPORTED_SYMBOL_FILE} ) 279 endif() 280 281 if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY OR ${name} STREQUAL "libclang") 282 install(TARGETS ${name} 283 LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX} 284 ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX} 285 RUNTIME DESTINATION bin) 286 endif() 287 288 set_target_properties(${name} PROPERTIES FOLDER "Clang libraries") 289endmacro(add_clang_library) 290 291macro(add_clang_executable name) 292 add_llvm_executable( ${name} ${ARGN} ) 293 set_target_properties(${name} PROPERTIES FOLDER "Clang executables") 294endmacro(add_clang_executable) 295 296include_directories(BEFORE 297 ${CMAKE_CURRENT_BINARY_DIR}/include 298 ${CMAKE_CURRENT_SOURCE_DIR}/include 299 ) 300 301if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY) 302 install(DIRECTORY include/ 303 DESTINATION include 304 FILES_MATCHING 305 PATTERN "*.def" 306 PATTERN "*.h" 307 PATTERN "config.h" EXCLUDE 308 PATTERN ".svn" EXCLUDE 309 ) 310 311 install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/include/ 312 DESTINATION include 313 FILES_MATCHING 314 PATTERN "CMakeFiles" EXCLUDE 315 PATTERN "*.inc" 316 ) 317endif() 318 319install(DIRECTORY include/clang-c 320 DESTINATION include 321 FILES_MATCHING 322 PATTERN "*.h" 323 PATTERN ".svn" EXCLUDE 324 ) 325 326add_definitions( -D_GNU_SOURCE ) 327 328option(CLANG_ENABLE_ARCMT "Build ARCMT." ON) 329option(CLANG_ENABLE_REWRITER "Build rewriter." ON) 330option(CLANG_ENABLE_STATIC_ANALYZER "Build static analyzer." ON) 331 332if (NOT CLANG_ENABLE_REWRITER AND CLANG_ENABLE_ARCMT) 333 message(FATAL_ERROR "Cannot disable rewriter while enabling ARCMT") 334endif() 335 336if (NOT CLANG_ENABLE_REWRITER AND CLANG_ENABLE_STATIC_ANALYZER) 337 message(FATAL_ERROR "Cannot disable rewriter while enabling static analyzer") 338endif() 339 340if (NOT CLANG_ENABLE_STATIC_ANALYZER AND CLANG_ENABLE_ARCMT) 341 message(FATAL_ERROR "Cannot disable static analyzer while enabling ARCMT") 342endif() 343 344if(CLANG_ENABLE_ARCMT) 345 add_definitions(-DCLANG_ENABLE_ARCMT) 346endif() 347if(CLANG_ENABLE_REWRITER) 348 add_definitions(-DCLANG_ENABLE_REWRITER) 349endif() 350if(CLANG_ENABLE_STATIC_ANALYZER) 351 add_definitions(-DCLANG_ENABLE_STATIC_ANALYZER) 352endif() 353 354# Clang version information 355set(CLANG_EXECUTABLE_VERSION 356 "${CLANG_VERSION_MAJOR}.${CLANG_VERSION_MINOR}" CACHE STRING 357 "Version number that will be placed into the clang executable, in the form XX.YY") 358set(LIBCLANG_LIBRARY_VERSION 359 "${CLANG_VERSION_MAJOR}.${CLANG_VERSION_MINOR}" CACHE STRING 360 "Version number that will be placed into the libclang library , in the form XX.YY") 361mark_as_advanced(CLANG_EXECUTABLE_VERSION LIBCLANG_LIBRARY_VERSION) 362 363add_subdirectory(utils/TableGen) 364 365add_subdirectory(include) 366add_subdirectory(lib) 367add_subdirectory(tools) 368add_subdirectory(runtime) 369 370option(CLANG_BUILD_EXAMPLES "Build CLANG example programs by default." OFF) 371add_subdirectory(examples) 372 373option(CLANG_INCLUDE_TESTS 374 "Generate build targets for the Clang unit tests." 375 ${LLVM_INCLUDE_TESTS}) 376 377if( CLANG_INCLUDE_TESTS ) 378 add_subdirectory(test) 379 add_subdirectory(unittests) 380endif() 381 382option(CLANG_INCLUDE_DOCS "Generate build targets for the Clang docs." 383 ${LLVM_INCLUDE_DOCS}) 384if( CLANG_INCLUDE_DOCS ) 385 add_subdirectory(docs) 386endif() 387 388# Workaround for MSVS10 to avoid the Dialog Hell 389# FIXME: This could be removed with future version of CMake. 390if( CLANG_BUILT_STANDALONE AND MSVC_VERSION EQUAL 1600 ) 391 set(CLANG_SLN_FILENAME "${CMAKE_CURRENT_BINARY_DIR}/Clang.sln") 392 if( EXISTS "${CLANG_SLN_FILENAME}" ) 393 file(APPEND "${CLANG_SLN_FILENAME}" "\n# This should be regenerated!\n") 394 endif() 395endif() 396 397set(BUG_REPORT_URL "http://llvm.org/bugs/" CACHE STRING 398 "Default URL where bug reports are to be submitted.") 399 400set(CLANG_ORDER_FILE "" CACHE FILEPATH 401 "Order file to use when compiling clang in order to improve startup time.") 402