1 # If we are not building as a part of LLVM, build Clang as an 2 # standalone project, using LLVM as an external library: 3 if( 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( NOT EXISTS "${CLANG_PATH_TO_LLVM_BUILD}/bin/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}" ) 23 # Looking for bin/Debug/llvm-tblgen is a complete hack. How can we get 24 # around this? 25 if( NOT EXISTS "${CLANG_PATH_TO_LLVM_BUILD}/bin/Debug/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}" ) 26 message(FATAL_ERROR "Please set CLANG_PATH_TO_LLVM_BUILD to a directory containing a LLVM build.") 27 endif() 28 endif() 29 30 list(APPEND CMAKE_MODULE_PATH "${CLANG_PATH_TO_LLVM_BUILD}/share/llvm/cmake") 31 32 get_filename_component(PATH_TO_LLVM_BUILD ${CLANG_PATH_TO_LLVM_BUILD} 33 ABSOLUTE) 34 35 include(AddLLVM) 36 include(TableGen) 37 include("${CLANG_PATH_TO_LLVM_BUILD}/share/llvm/cmake/LLVMConfig.cmake") 38 include(HandleLLVMOptions) 39 40 set(PACKAGE_VERSION "${LLVM_PACKAGE_VERSION}") 41 42 set(LLVM_MAIN_INCLUDE_DIR "${LLVM_MAIN_SRC_DIR}/include") 43 set(LLVM_BINARY_DIR ${CMAKE_BINARY_DIR}) 44 45 set(CMAKE_INCLUDE_CURRENT_DIR ON) 46 include_directories("${PATH_TO_LLVM_BUILD}/include" "${LLVM_MAIN_INCLUDE_DIR}") 47 link_directories("${PATH_TO_LLVM_BUILD}/lib") 48 49 if( EXISTS "${CLANG_PATH_TO_LLVM_BUILD}/bin/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}" ) 50 set(LLVM_TABLEGEN_EXE "${PATH_TO_LLVM_BUILD}/bin/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}") 51 else() 52 # FIXME: This is an utter hack. 53 set(LLVM_TABLEGEN_EXE "${PATH_TO_LLVM_BUILD}/bin/Debug/llvm-tblgen${CMAKE_EXECUTABLE_SUFFIX}") 54 endif() 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 ${CMAKE_BINARY_DIR}/lib ) 67 68 set( CLANG_BUILT_STANDALONE 1 ) 69 70 find_package(LibXml2) 71 if (LIBXML2_FOUND) 72 set(CLANG_HAVE_LIBXML 1) 73 endif () 74 endif() 75 76 set(CLANG_RESOURCE_DIR "" CACHE STRING 77 "Relative directory from the Clang binary to its resource files.") 78 79 set(C_INCLUDE_DIRS "" CACHE STRING 80 "Colon separated list of directories clang will search for headers.") 81 82 set(GCC_INSTALL_PREFIX "" CACHE PATH "Directory where gcc is installed." ) 83 set(DEFAULT_SYSROOT "" CACHE PATH 84 "Default <path> to all compiler invocations for --sysroot=<path>." ) 85 86 set(CLANG_VENDOR "" CACHE STRING 87 "Vendor-specific text for showing with version information.") 88 89 if( CLANG_VENDOR ) 90 add_definitions( -DCLANG_VENDOR="${CLANG_VENDOR} " ) 91 endif() 92 93 set(CLANG_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) 94 set(CLANG_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) 95 96 if( CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR AND NOT MSVC_IDE ) 97 message(FATAL_ERROR "In-source builds are not allowed. CMake would overwrite " 98 "the makefiles distributed with LLVM. Please create a directory and run cmake " 99 "from there, passing the path to this source directory as the last argument. " 100 "This process created the file `CMakeCache.txt' and the directory " 101 "`CMakeFiles'. Please delete them.") 102 endif() 103 104 if( NOT CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR ) 105 file(GLOB_RECURSE 106 tablegenned_files_on_include_dir 107 "${CLANG_SOURCE_DIR}/include/clang/*.inc") 108 if( tablegenned_files_on_include_dir ) 109 message(FATAL_ERROR "Apparently there is a previous in-source build, " 110 "probably as the result of running `configure' and `make' on " 111 "${CLANG_SOURCE_DIR}. This may cause problems. The suspicious files are:\n" 112 "${tablegenned_files_on_include_dir}\nPlease clean the source directory.") 113 endif() 114 endif() 115 116 # Compute the Clang version from the LLVM version. 117 string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" CLANG_VERSION 118 ${PACKAGE_VERSION}) 119 message(STATUS "Clang version: ${CLANG_VERSION}") 120 121 string(REGEX REPLACE "([0-9]+)\\.[0-9]+(\\.[0-9]+)?" "\\1" CLANG_VERSION_MAJOR 122 ${CLANG_VERSION}) 123 string(REGEX REPLACE "[0-9]+\\.([0-9]+)(\\.[0-9]+)?" "\\1" CLANG_VERSION_MINOR 124 ${CLANG_VERSION}) 125 if (${CLANG_VERSION} MATCHES "[0-9]+\\.[0-9]+\\.[0-9]+") 126 set(CLANG_HAS_VERSION_PATCHLEVEL 1) 127 string(REGEX REPLACE "[0-9]+\\.[0-9]+\\.([0-9]+)" "\\1" CLANG_VERSION_PATCHLEVEL 128 ${CLANG_VERSION}) 129 else() 130 set(CLANG_HAS_VERSION_PATCHLEVEL 0) 131 endif() 132 133 # Configure the Version.inc file. 134 configure_file( 135 ${CMAKE_CURRENT_SOURCE_DIR}/include/clang/Basic/Version.inc.in 136 ${CMAKE_CURRENT_BINARY_DIR}/include/clang/Basic/Version.inc) 137 138 # Add appropriate flags for GCC 139 if (LLVM_COMPILER_IS_GCC_COMPATIBLE) 140 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-common -Woverloaded-virtual -Wcast-qual -fno-strict-aliasing") 141 142 # Enable -pedantic for Clang even if it's not enabled for LLVM. 143 if (NOT LLVM_ENABLE_PEDANTIC) 144 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic -Wno-long-long") 145 endif () 146 147 check_cxx_compiler_flag("-Werror -Wnested-anon-types" CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG) 148 if( CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG ) 149 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-nested-anon-types" ) 150 endif() 151 endif () 152 153 if (APPLE) 154 set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,-flat_namespace -Wl,-undefined -Wl,suppress") 155 endif () 156 157 configure_file( 158 ${CLANG_SOURCE_DIR}/include/clang/Config/config.h.cmake 159 ${CLANG_BINARY_DIR}/include/clang/Config/config.h) 160 161 include(LLVMParseArguments) 162 163 function(clang_tablegen) 164 # Syntax: 165 # clang_tablegen output-file [tablegen-arg ...] SOURCE source-file 166 # [[TARGET cmake-target-name] [DEPENDS extra-dependency ...]] 167 # 168 # Generates a custom command for invoking tblgen as 169 # 170 # tblgen source-file -o=output-file tablegen-arg ... 171 # 172 # and, if cmake-target-name is provided, creates a custom target for 173 # executing the custom command depending on output-file. It is 174 # possible to list more files to depend after DEPENDS. 175 176 parse_arguments( CTG "SOURCE;TARGET;DEPENDS" "" ${ARGN} ) 177 178 if( NOT CTG_SOURCE ) 179 message(FATAL_ERROR "SOURCE source-file required by clang_tablegen") 180 endif() 181 182 set( LLVM_TARGET_DEFINITIONS ${CTG_SOURCE} ) 183 tablegen( CLANG ${CTG_DEFAULT_ARGS} ) 184 185 list( GET CTG_DEFAULT_ARGS 0 output_file ) 186 if( CTG_TARGET ) 187 add_custom_target( ${CTG_TARGET} DEPENDS ${output_file} ${CTG_DEPENDS} ) 188 set_target_properties( ${CTG_TARGET} PROPERTIES FOLDER "Clang tablegenning") 189 endif() 190 endfunction(clang_tablegen) 191 192 macro(add_clang_library name) 193 llvm_process_sources(srcs ${ARGN}) 194 if(MSVC_IDE OR XCODE) 195 # Add public headers 196 file(RELATIVE_PATH lib_path 197 ${CLANG_SOURCE_DIR}/lib/ 198 ${CMAKE_CURRENT_SOURCE_DIR} 199 ) 200 if(NOT lib_path MATCHES "^[.][.]") 201 file( GLOB_RECURSE headers 202 ${CLANG_SOURCE_DIR}/include/clang/${lib_path}/*.h 203 ${CLANG_SOURCE_DIR}/include/clang/${lib_path}/*.def 204 ) 205 set_source_files_properties(${headers} PROPERTIES HEADER_FILE_ONLY ON) 206 207 file( GLOB_RECURSE tds 208 ${CLANG_SOURCE_DIR}/include/clang/${lib_path}/*.td 209 ) 210 source_group("TableGen descriptions" FILES ${tds}) 211 set_source_files_properties(${tds}} PROPERTIES HEADER_FILE_ONLY ON) 212 213 set(srcs ${srcs} ${headers} ${tds}) 214 endif() 215 endif(MSVC_IDE OR XCODE) 216 if (MODULE) 217 set(libkind MODULE) 218 elseif (SHARED_LIBRARY) 219 set(libkind SHARED) 220 else() 221 set(libkind) 222 endif() 223 add_library( ${name} ${libkind} ${srcs} ) 224 if( LLVM_COMMON_DEPENDS ) 225 add_dependencies( ${name} ${LLVM_COMMON_DEPENDS} ) 226 endif( LLVM_COMMON_DEPENDS ) 227 228 llvm_config( ${name} ${LLVM_LINK_COMPONENTS} ) 229 target_link_libraries( ${name} ${LLVM_COMMON_LIBS} ) 230 link_system_libs( ${name} ) 231 232 install(TARGETS ${name} 233 LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX} 234 ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX} 235 RUNTIME DESTINATION bin) 236 set_target_properties(${name} PROPERTIES FOLDER "Clang libraries") 237 endmacro(add_clang_library) 238 239 macro(add_clang_executable name) 240 add_llvm_executable( ${name} ${ARGN} ) 241 set_target_properties(${name} PROPERTIES FOLDER "Clang executables") 242 endmacro(add_clang_executable) 243 244 include_directories(BEFORE 245 ${CMAKE_CURRENT_BINARY_DIR}/include 246 ${CMAKE_CURRENT_SOURCE_DIR}/include 247 ) 248 249 install(DIRECTORY include/ 250 DESTINATION include 251 FILES_MATCHING 252 PATTERN "*.def" 253 PATTERN "*.h" 254 PATTERN "config.h" EXCLUDE 255 PATTERN ".svn" EXCLUDE 256 ) 257 258 install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/include/ 259 DESTINATION include 260 FILES_MATCHING 261 PATTERN "CMakeFiles" EXCLUDE 262 PATTERN "*.inc" 263 ) 264 265 add_definitions( -D_GNU_SOURCE ) 266 267 option(CLANG_ENABLE_ARCMT "Enable ARCMT by default." ON) 268 option(CLANG_ENABLE_REWRITER "Enable rewriter by default." ON) 269 option(CLANG_ENABLE_STATIC_ANALYZER "Enable static analyzer by default." ON) 270 271 if (NOT CLANG_ENABLE_REWRITER AND CLANG_ENABLE_ARCMT) 272 message(FATAL_ERROR "Cannot disable rewriter while enabling ARCMT") 273 endif() 274 275 if (NOT CLANG_ENABLE_REWRITER AND CLANG_ENABLE_STATIC_ANALYZER) 276 message(FATAL_ERROR "Cannot disable rewriter while enabling static analyzer") 277 endif() 278 279 if(CLANG_ENABLE_ARCMT) 280 add_definitions(-DCLANG_ENABLE_ARCMT) 281 endif() 282 if(CLANG_ENABLE_REWRITER) 283 add_definitions(-DCLANG_ENABLE_REWRITER) 284 endif() 285 if(CLANG_ENABLE_STATIC_ANALYZER) 286 add_definitions(-DCLANG_ENABLE_STATIC_ANALYZER) 287 endif() 288 289 # Clang version information 290 set(CLANG_EXECUTABLE_VERSION 291 "${CLANG_VERSION_MAJOR}.${CLANG_VERSION_MINOR}" CACHE STRING 292 "Version number that will be placed into the clang executable, in the form XX.YY") 293 set(LIBCLANG_LIBRARY_VERSION 294 "${CLANG_VERSION_MAJOR}.${CLANG_VERSION_MINOR}" CACHE STRING 295 "Version number that will be placed into the libclang library , in the form XX.YY") 296 mark_as_advanced(CLANG_EXECUTABLE_VERSION LIBCLANG_LIBRARY_VERSION) 297 298 add_subdirectory(utils/TableGen) 299 300 add_subdirectory(include) 301 add_subdirectory(lib) 302 add_subdirectory(tools) 303 add_subdirectory(runtime) 304 305 option(CLANG_BUILD_EXAMPLES "Build CLANG example programs by default." OFF) 306 add_subdirectory(examples) 307 308 option(CLANG_INCLUDE_TESTS 309 "Generate build targets for the Clang unit tests." 310 ${LLVM_INCLUDE_TESTS}) 311 312 # TODO: docs. 313 add_subdirectory(test) 314 315 if( CLANG_INCLUDE_TESTS ) 316 add_subdirectory(unittests) 317 endif() 318 319 # Workaround for MSVS10 to avoid the Dialog Hell 320 # FIXME: This could be removed with future version of CMake. 321 if( CLANG_BUILT_STANDALONE AND MSVC_VERSION EQUAL 1600 ) 322 set(CLANG_SLN_FILENAME "${CMAKE_CURRENT_BINARY_DIR}/Clang.sln") 323 if( EXISTS "${CLANG_SLN_FILENAME}" ) 324 file(APPEND "${CLANG_SLN_FILENAME}" "\n# This should be regenerated!\n") 325 endif() 326 endif() 327 328 set(BUG_REPORT_URL "http://llvm.org/bugs/" CACHE STRING 329 "Default URL where bug reports are to be submitted.") 330
