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 ${CMAKE_BINARY_DIR}/lib ) 67 68 set( CLANG_BUILT_STANDALONE 1 ) 69 endif() 70 71 set(CLANG_RESOURCE_DIR "" CACHE STRING 72 "Relative directory from the Clang binary to its resource files.") 73 74 set(C_INCLUDE_DIRS "" CACHE STRING 75 "Colon separated list of directories clang will search for headers.") 76 77 set(GCC_INSTALL_PREFIX "" CACHE PATH "Directory where gcc is installed." ) 78 set(DEFAULT_SYSROOT "" CACHE PATH 79 "Default <path> to all compiler invocations for --sysroot=<path>." ) 80 81 set(CLANG_VENDOR "" CACHE STRING 82 "Vendor-specific text for showing with version information.") 83 84 if( CLANG_VENDOR ) 85 add_definitions( -DCLANG_VENDOR="${CLANG_VENDOR} " ) 86 endif() 87 88 set(CLANG_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) 89 set(CLANG_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) 90 91 if( CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR AND NOT MSVC_IDE ) 92 message(FATAL_ERROR "In-source builds are not allowed. CMake would overwrite " 93 "the makefiles distributed with LLVM. Please create a directory and run cmake " 94 "from there, passing the path to this source directory as the last argument. " 95 "This process created the file `CMakeCache.txt' and the directory " 96 "`CMakeFiles'. Please delete them.") 97 endif() 98 99 if( NOT CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR ) 100 file(GLOB_RECURSE 101 tablegenned_files_on_include_dir 102 "${CLANG_SOURCE_DIR}/include/clang/*.inc") 103 if( tablegenned_files_on_include_dir ) 104 message(FATAL_ERROR "Apparently there is a previous in-source build, " 105 "probably as the result of running `configure' and `make' on " 106 "${CLANG_SOURCE_DIR}. This may cause problems. The suspicious files are:\n" 107 "${tablegenned_files_on_include_dir}\nPlease clean the source directory.") 108 endif() 109 endif() 110 111 # Compute the Clang version from the LLVM version. 112 string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" CLANG_VERSION 113 ${PACKAGE_VERSION}) 114 message(STATUS "Clang version: ${CLANG_VERSION}") 115 116 string(REGEX REPLACE "([0-9]+)\\.[0-9]+(\\.[0-9]+)?" "\\1" CLANG_VERSION_MAJOR 117 ${CLANG_VERSION}) 118 string(REGEX REPLACE "[0-9]+\\.([0-9]+)(\\.[0-9]+)?" "\\1" CLANG_VERSION_MINOR 119 ${CLANG_VERSION}) 120 if (${CLANG_VERSION} MATCHES "[0-9]+\\.[0-9]+\\.[0-9]+") 121 set(CLANG_HAS_VERSION_PATCHLEVEL 1) 122 string(REGEX REPLACE "[0-9]+\\.[0-9]+\\.([0-9]+)" "\\1" CLANG_VERSION_PATCHLEVEL 123 ${CLANG_VERSION}) 124 else() 125 set(CLANG_HAS_VERSION_PATCHLEVEL 0) 126 endif() 127 128 # Configure the Version.inc file. 129 configure_file( 130 ${CMAKE_CURRENT_SOURCE_DIR}/include/clang/Basic/Version.inc.in 131 ${CMAKE_CURRENT_BINARY_DIR}/include/clang/Basic/Version.inc) 132 133 # Add appropriate flags for GCC 134 if (LLVM_COMPILER_IS_GCC_COMPATIBLE) 135 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-common -Woverloaded-virtual -Wcast-qual -fno-strict-aliasing -pedantic -Wno-long-long -Wall -W -Wno-unused-parameter -Wwrite-strings") 136 endif () 137 138 if (APPLE) 139 set(CMAKE_MODULE_LINKER_FLAGS "-Wl,-flat_namespace -Wl,-undefined -Wl,suppress") 140 endif () 141 142 # libxml2 is an optional dependency, required only to run validation 143 # tests on XML output. 144 find_package(LibXml2) 145 146 configure_file( 147 ${CLANG_SOURCE_DIR}/include/clang/Config/config.h.cmake 148 ${CLANG_BINARY_DIR}/include/clang/Config/config.h) 149 150 include(LLVMParseArguments) 151 152 function(clang_tablegen) 153 # Syntax: 154 # clang_tablegen output-file [tablegen-arg ...] SOURCE source-file 155 # [[TARGET cmake-target-name] [DEPENDS extra-dependency ...]] 156 # 157 # Generates a custom command for invoking tblgen as 158 # 159 # tblgen source-file -o=output-file tablegen-arg ... 160 # 161 # and, if cmake-target-name is provided, creates a custom target for 162 # executing the custom command depending on output-file. It is 163 # possible to list more files to depend after DEPENDS. 164 165 parse_arguments( CTG "SOURCE;TARGET;DEPENDS" "" ${ARGN} ) 166 167 if( NOT CTG_SOURCE ) 168 message(FATAL_ERROR "SOURCE source-file required by clang_tablegen") 169 endif() 170 171 set( LLVM_TARGET_DEFINITIONS ${CTG_SOURCE} ) 172 tablegen( CLANG ${CTG_DEFAULT_ARGS} ) 173 174 list( GET CTG_DEFAULT_ARGS 0 output_file ) 175 if( CTG_TARGET ) 176 add_custom_target( ${CTG_TARGET} DEPENDS ${output_file} ${CTG_DEPENDS} ) 177 set_target_properties( ${CTG_TARGET} PROPERTIES FOLDER "Clang tablegenning") 178 endif() 179 endfunction(clang_tablegen) 180 181 macro(add_clang_library name) 182 llvm_process_sources(srcs ${ARGN}) 183 if(MSVC_IDE OR XCODE) 184 string( REGEX MATCHALL "/[^/]+" split_path ${CMAKE_CURRENT_SOURCE_DIR}) 185 list( GET split_path -1 dir) 186 file( GLOB_RECURSE headers 187 ../../../include/clang/StaticAnalyzer${dir}/*.h 188 ../../../include/clang/StaticAnalyzer${dir}/*.td 189 ../../../include/clang/StaticAnalyzer${dir}/*.def 190 ../../include/clang${dir}/*.h 191 ../../include/clang${dir}/*.td 192 ../../include/clang${dir}/*.def) 193 set(srcs ${srcs} ${headers}) 194 endif(MSVC_IDE OR XCODE) 195 if (MODULE) 196 set(libkind MODULE) 197 elseif (SHARED_LIBRARY) 198 set(libkind SHARED) 199 else() 200 set(libkind) 201 endif() 202 add_library( ${name} ${libkind} ${srcs} ) 203 if( LLVM_COMMON_DEPENDS ) 204 add_dependencies( ${name} ${LLVM_COMMON_DEPENDS} ) 205 endif( LLVM_COMMON_DEPENDS ) 206 207 llvm_config( ${name} ${LLVM_LINK_COMPONENTS} ) 208 target_link_libraries( ${name} ${LLVM_COMMON_LIBS} ) 209 link_system_libs( ${name} ) 210 211 install(TARGETS ${name} 212 LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX} 213 ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX} 214 RUNTIME DESTINATION bin) 215 set_target_properties(${name} PROPERTIES FOLDER "Clang libraries") 216 endmacro(add_clang_library) 217 218 macro(add_clang_executable name) 219 add_llvm_executable( ${name} ${ARGN} ) 220 set_target_properties(${name} PROPERTIES FOLDER "Clang executables") 221 endmacro(add_clang_executable) 222 223 include_directories(BEFORE 224 ${CMAKE_CURRENT_BINARY_DIR}/include 225 ${CMAKE_CURRENT_SOURCE_DIR}/include 226 ) 227 228 install(DIRECTORY include/ 229 DESTINATION include 230 FILES_MATCHING 231 PATTERN "*.def" 232 PATTERN "*.h" 233 PATTERN "config.h" EXCLUDE 234 PATTERN ".svn" EXCLUDE 235 ) 236 237 install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/include/ 238 DESTINATION include 239 FILES_MATCHING 240 PATTERN "CMakeFiles" EXCLUDE 241 PATTERN "*.inc" 242 ) 243 244 add_definitions( -D_GNU_SOURCE ) 245 246 # Clang version information 247 set(CLANG_EXECUTABLE_VERSION 248 "${CLANG_VERSION_MAJOR}.${CLANG_VERSION_MINOR}" CACHE STRING 249 "Version number that will be placed into the clang executable, in the form XX.YY") 250 set(LIBCLANG_LIBRARY_VERSION 251 "${CLANG_VERSION_MAJOR}.${CLANG_VERSION_MINOR}" CACHE STRING 252 "Version number that will be placed into the libclang library , in the form XX.YY") 253 mark_as_advanced(CLANG_EXECUTABLE_VERSION LIBCLANG_LIBRARY_VERSION) 254 255 add_subdirectory(utils/TableGen) 256 257 add_subdirectory(include) 258 add_subdirectory(lib) 259 add_subdirectory(tools) 260 add_subdirectory(runtime) 261 262 option(CLANG_BUILD_EXAMPLES "Build CLANG example programs by default." OFF) 263 add_subdirectory(examples) 264 265 # TODO: docs. 266 add_subdirectory(test) 267 268 if( LLVM_INCLUDE_TESTS ) 269 if( NOT CLANG_BUILT_STANDALONE ) 270 add_subdirectory(unittests) 271 endif() 272 endif() 273 274 # Workaround for MSVS10 to avoid the Dialog Hell 275 # FIXME: This could be removed with future version of CMake. 276 if( CLANG_BUILT_STANDALONE AND MSVC_VERSION EQUAL 1600 ) 277 set(CLANG_SLN_FILENAME "${CMAKE_CURRENT_BINARY_DIR}/Clang.sln") 278 if( EXISTS "${CLANG_SLN_FILENAME}" ) 279 file(APPEND "${CLANG_SLN_FILENAME}" "\n# This should be regenerated!\n") 280 endif() 281 endif() 282 283 set(BUG_REPORT_URL "http://llvm.org/bugs/" CACHE STRING 284 "Default URL where bug reports are to be submitted.") 285 286
