1include(ExternalProject) 2 3# llvm_ExternalProject_BuildCmd(out_var target) 4# Utility function for constructing command lines for external project targets 5function(llvm_ExternalProject_BuildCmd out_var target bin_dir) 6 cmake_parse_arguments(ARG "" "CONFIGURATION" "" ${ARGN}) 7 if(NOT ARG_CONFIGURATION) 8 set(ARG_CONFIGURATION "$<CONFIG>") 9 endif() 10 if (CMAKE_GENERATOR MATCHES "Make") 11 # Use special command for Makefiles to support parallelism. 12 set(${out_var} "$(MAKE)" "-C" "${bin_dir}" "${target}" PARENT_SCOPE) 13 else() 14 set(${out_var} ${CMAKE_COMMAND} --build ${bin_dir} --target ${target} 15 --config ${ARG_CONFIGURATION} PARENT_SCOPE) 16 endif() 17endfunction() 18 19# llvm_ExternalProject_Add(name source_dir ... 20# USE_TOOLCHAIN 21# Use just-built tools (see TOOLCHAIN_TOOLS) 22# EXCLUDE_FROM_ALL 23# Exclude this project from the all target 24# NO_INSTALL 25# Don't generate install targets for this project 26# ALWAYS_CLEAN 27# Always clean the sub-project before building 28# CMAKE_ARGS arguments... 29# Optional cmake arguments to pass when configuring the project 30# TOOLCHAIN_TOOLS targets... 31# Targets for toolchain tools (defaults to clang;lld) 32# DEPENDS targets... 33# Targets that this project depends on 34# EXTRA_TARGETS targets... 35# Extra targets in the subproject to generate targets for 36# PASSTHROUGH_PREFIXES prefix... 37# Extra variable prefixes (name is always included) to pass down 38# STRIP_TOOL path 39# Use provided strip tool instead of the default one. 40# ) 41function(llvm_ExternalProject_Add name source_dir) 42 cmake_parse_arguments(ARG 43 "USE_TOOLCHAIN;EXCLUDE_FROM_ALL;NO_INSTALL;ALWAYS_CLEAN" 44 "SOURCE_DIR" 45 "CMAKE_ARGS;TOOLCHAIN_TOOLS;RUNTIME_LIBRARIES;DEPENDS;EXTRA_TARGETS;PASSTHROUGH_PREFIXES;STRIP_TOOL" 46 ${ARGN}) 47 canonicalize_tool_name(${name} nameCanon) 48 if(NOT ARG_TOOLCHAIN_TOOLS) 49 set(ARG_TOOLCHAIN_TOOLS clang lld) 50 if(NOT APPLE AND NOT WIN32) 51 list(APPEND ARG_TOOLCHAIN_TOOLS llvm-ar llvm-lipo llvm-ranlib llvm-nm llvm-objcopy llvm-objdump llvm-strip) 52 endif() 53 endif() 54 foreach(tool ${ARG_TOOLCHAIN_TOOLS}) 55 if(TARGET ${tool}) 56 list(APPEND TOOLCHAIN_TOOLS ${tool}) 57 list(APPEND TOOLCHAIN_BINS $<TARGET_FILE:${tool}>) 58 endif() 59 endforeach() 60 61 if(NOT ARG_RUNTIME_LIBRARIES) 62 set(ARG_RUNTIME_LIBRARIES compiler-rt libcxx) 63 endif() 64 foreach(lib ${ARG_RUNTIME_LIBRARIES}) 65 if(TARGET ${lib}) 66 list(APPEND RUNTIME_LIBRARIES ${lib}) 67 endif() 68 endforeach() 69 70 if(ARG_ALWAYS_CLEAN) 71 set(always_clean clean) 72 endif() 73 74 list(FIND TOOLCHAIN_TOOLS clang FOUND_CLANG) 75 if(FOUND_CLANG GREATER -1) 76 set(CLANG_IN_TOOLCHAIN On) 77 endif() 78 79 if(RUNTIME_LIBRARIES AND CLANG_IN_TOOLCHAIN) 80 list(APPEND TOOLCHAIN_BINS ${RUNTIME_LIBRARIES}) 81 endif() 82 83 set(STAMP_DIR ${CMAKE_CURRENT_BINARY_DIR}/${name}-stamps/) 84 set(BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/${name}-bins/) 85 86 add_custom_target(${name}-clear 87 COMMAND ${CMAKE_COMMAND} -E remove_directory ${BINARY_DIR} 88 COMMAND ${CMAKE_COMMAND} -E remove_directory ${STAMP_DIR} 89 COMMENT "Clobbering ${name} build and stamp directories" 90 USES_TERMINAL 91 ) 92 93 # Find all variables that start with a prefix and propagate them through 94 get_cmake_property(variableNames VARIABLES) 95 96 list(APPEND ARG_PASSTHROUGH_PREFIXES ${nameCanon}) 97 foreach(prefix ${ARG_PASSTHROUGH_PREFIXES}) 98 foreach(variableName ${variableNames}) 99 if(variableName MATCHES "^${prefix}") 100 string(REPLACE ";" "|" value "${${variableName}}") 101 list(APPEND PASSTHROUGH_VARIABLES 102 -D${variableName}=${value}) 103 endif() 104 endforeach() 105 endforeach() 106 107 foreach(arg ${ARG_CMAKE_ARGS}) 108 if(arg MATCHES "^-DCMAKE_SYSTEM_NAME=") 109 string(REGEX REPLACE "^-DCMAKE_SYSTEM_NAME=(.*)$" "\\1" _cmake_system_name "${arg}") 110 endif() 111 endforeach() 112 113 if(ARG_USE_TOOLCHAIN AND NOT CMAKE_CROSSCOMPILING) 114 if(CLANG_IN_TOOLCHAIN) 115 if(_cmake_system_name STREQUAL Windows) 116 set(compiler_args -DCMAKE_C_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang-cl${CMAKE_EXECUTABLE_SUFFIX} 117 -DCMAKE_CXX_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang-cl${CMAKE_EXECUTABLE_SUFFIX} 118 -DCMAKE_ASM_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang-cl${CMAKE_EXECUTABLE_SUFFIX}) 119 else() 120 set(compiler_args -DCMAKE_C_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang${CMAKE_EXECUTABLE_SUFFIX} 121 -DCMAKE_CXX_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang++${CMAKE_EXECUTABLE_SUFFIX} 122 -DCMAKE_ASM_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang${CMAKE_EXECUTABLE_SUFFIX}) 123 endif() 124 endif() 125 if(lld IN_LIST TOOLCHAIN_TOOLS) 126 if(_cmake_system_name STREQUAL Windows) 127 list(APPEND compiler_args -DCMAKE_LINKER=${LLVM_RUNTIME_OUTPUT_INTDIR}/lld-link${CMAKE_EXECUTABLE_SUFFIX}) 128 else() 129 list(APPEND compiler_args -DCMAKE_LINKER=${LLVM_RUNTIME_OUTPUT_INTDIR}/ld.lld${CMAKE_EXECUTABLE_SUFFIX}) 130 endif() 131 endif() 132 if(llvm-ar IN_LIST TOOLCHAIN_TOOLS) 133 list(APPEND compiler_args -DCMAKE_AR=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ar${CMAKE_EXECUTABLE_SUFFIX}) 134 endif() 135 if(llvm-lipo IN_LIST TOOLCHAIN_TOOLS) 136 list(APPEND compiler_args -DCMAKE_LIPO=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-lipo${CMAKE_EXECUTABLE_SUFFIX}) 137 endif() 138 if(llvm-ranlib IN_LIST TOOLCHAIN_TOOLS) 139 list(APPEND compiler_args -DCMAKE_RANLIB=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ranlib${CMAKE_EXECUTABLE_SUFFIX}) 140 endif() 141 if(llvm-nm IN_LIST TOOLCHAIN_TOOLS) 142 list(APPEND compiler_args -DCMAKE_NM=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-nm${CMAKE_EXECUTABLE_SUFFIX}) 143 endif() 144 if(llvm-objdump IN_LIST TOOLCHAIN_TOOLS) 145 list(APPEND compiler_args -DCMAKE_OBJDUMP=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-objdump${CMAKE_EXECUTABLE_SUFFIX}) 146 endif() 147 if(llvm-objcopy IN_LIST TOOLCHAIN_TOOLS) 148 list(APPEND compiler_args -DCMAKE_OBJCOPY=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-objcopy${CMAKE_EXECUTABLE_SUFFIX}) 149 endif() 150 if(llvm-strip IN_LIST TOOLCHAIN_TOOLS AND NOT ARG_STRIP_TOOL) 151 list(APPEND compiler_args -DCMAKE_STRIP=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-strip${CMAKE_EXECUTABLE_SUFFIX}) 152 endif() 153 list(APPEND ARG_DEPENDS ${TOOLCHAIN_TOOLS}) 154 endif() 155 156 if(ARG_STRIP_TOOL) 157 list(APPEND compiler_args -DCMAKE_STRIP=${ARG_STRIP_TOOL}) 158 endif() 159 160 add_custom_command( 161 OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp 162 DEPENDS ${ARG_DEPENDS} 163 COMMAND ${CMAKE_COMMAND} -E touch ${BINARY_DIR}/CMakeCache.txt 164 COMMAND ${CMAKE_COMMAND} -E touch ${STAMP_DIR}/${name}-mkdir 165 COMMAND ${CMAKE_COMMAND} -E touch ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp 166 COMMENT "Clobbering bootstrap build and stamp directories" 167 ) 168 169 add_custom_target(${name}-clobber 170 DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp) 171 172 if(ARG_EXCLUDE_FROM_ALL) 173 set(exclude EXCLUDE_FROM_ALL 1) 174 endif() 175 176 if(CMAKE_SYSROOT) 177 set(sysroot_arg -DCMAKE_SYSROOT=${CMAKE_SYSROOT}) 178 endif() 179 180 if(CMAKE_CROSSCOMPILING) 181 set(compiler_args -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER} 182 -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER} 183 -DCMAKE_LINKER=${CMAKE_LINKER} 184 -DCMAKE_AR=${CMAKE_AR} 185 -DCMAKE_RANLIB=${CMAKE_RANLIB} 186 -DCMAKE_NM=${CMAKE_NM} 187 -DCMAKE_OBJCOPY=${CMAKE_OBJCOPY} 188 -DCMAKE_OBJDUMP=${CMAKE_OBJDUMP} 189 -DCMAKE_STRIP=${CMAKE_STRIP}) 190 set(llvm_config_path ${LLVM_CONFIG_PATH}) 191 192 if(CMAKE_CXX_COMPILER_ID MATCHES "Clang") 193 string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" CLANG_VERSION 194 ${PACKAGE_VERSION}) 195 set(resource_dir "${LLVM_LIBRARY_DIR}/clang/${CLANG_VERSION}") 196 set(flag_types ASM C CXX MODULE_LINKER SHARED_LINKER EXE_LINKER) 197 foreach(type ${flag_types}) 198 set(${type}_flag -DCMAKE_${type}_FLAGS=-resource-dir=${resource_dir}) 199 endforeach() 200 string(REPLACE ";" "|" flag_string "${flag_types}") 201 foreach(arg ${ARG_CMAKE_ARGS}) 202 if(arg MATCHES "^-DCMAKE_(${flag_string})_FLAGS") 203 foreach(type ${flag_types}) 204 if(arg MATCHES "^-DCMAKE_${type}_FLAGS") 205 string(REGEX REPLACE "^-DCMAKE_${type}_FLAGS=(.*)$" "\\1" flag_value "${arg}") 206 set(${type}_flag "${${type}_flag} ${flag_value}") 207 endif() 208 endforeach() 209 else() 210 list(APPEND cmake_args ${arg}) 211 endif() 212 endforeach() 213 foreach(type ${flag_types}) 214 list(APPEND cmake_args ${${type}_flag}) 215 endforeach() 216 endif() 217 else() 218 set(llvm_config_path "$<TARGET_FILE:llvm-config>") 219 set(cmake_args ${ARG_CMAKE_ARGS}) 220 endif() 221 222 ExternalProject_Add(${name} 223 DEPENDS ${ARG_DEPENDS} llvm-config 224 ${name}-clobber 225 PREFIX ${CMAKE_BINARY_DIR}/projects/${name} 226 SOURCE_DIR ${source_dir} 227 STAMP_DIR ${STAMP_DIR} 228 BINARY_DIR ${BINARY_DIR} 229 ${exclude} 230 CMAKE_ARGS ${${nameCanon}_CMAKE_ARGS} 231 ${compiler_args} 232 -DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX} 233 ${sysroot_arg} 234 -DLLVM_BINARY_DIR=${PROJECT_BINARY_DIR} 235 -DLLVM_CONFIG_PATH=${llvm_config_path} 236 -DLLVM_ENABLE_WERROR=${LLVM_ENABLE_WERROR} 237 -DLLVM_HOST_TRIPLE=${LLVM_HOST_TRIPLE} 238 -DLLVM_HAVE_LINK_VERSION_SCRIPT=${LLVM_HAVE_LINK_VERSION_SCRIPT} 239 -DLLVM_USE_RELATIVE_PATHS_IN_DEBUG_INFO=${LLVM_USE_RELATIVE_PATHS_IN_DEBUG_INFO} 240 -DLLVM_SOURCE_PREFIX=${LLVM_SOURCE_PREFIX} 241 -DPACKAGE_VERSION=${PACKAGE_VERSION} 242 -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE} 243 -DCMAKE_MAKE_PROGRAM=${CMAKE_MAKE_PROGRAM} 244 -DCMAKE_EXPORT_COMPILE_COMMANDS=1 245 ${cmake_args} 246 ${PASSTHROUGH_VARIABLES} 247 INSTALL_COMMAND "" 248 STEP_TARGETS configure build 249 BUILD_ALWAYS 1 250 USES_TERMINAL_CONFIGURE 1 251 USES_TERMINAL_BUILD 1 252 USES_TERMINAL_INSTALL 1 253 LIST_SEPARATOR | 254 ) 255 256 if(ARG_USE_TOOLCHAIN) 257 set(force_deps DEPENDS ${TOOLCHAIN_BINS}) 258 endif() 259 260 llvm_ExternalProject_BuildCmd(run_clean clean ${BINARY_DIR}) 261 ExternalProject_Add_Step(${name} clean 262 COMMAND ${run_clean} 263 COMMENT "Cleaning ${name}..." 264 DEPENDEES configure 265 ${force_deps} 266 WORKING_DIRECTORY ${BINARY_DIR} 267 EXCLUDE_FROM_MAIN 1 268 USES_TERMINAL 1 269 ) 270 ExternalProject_Add_StepTargets(${name} clean) 271 272 if(ARG_USE_TOOLCHAIN) 273 add_dependencies(${name}-clean ${name}-clobber) 274 set_target_properties(${name}-clean PROPERTIES 275 SOURCES ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp) 276 endif() 277 278 if(NOT ARG_NO_INSTALL) 279 install(CODE "execute_process\(COMMAND \${CMAKE_COMMAND} -DCMAKE_INSTALL_PREFIX=\${CMAKE_INSTALL_PREFIX} -DCMAKE_INSTALL_DO_STRIP=\${CMAKE_INSTALL_DO_STRIP} -P ${BINARY_DIR}/cmake_install.cmake\)" 280 COMPONENT ${name}) 281 282 add_llvm_install_targets(install-${name} 283 DEPENDS ${name} 284 COMPONENT ${name}) 285 endif() 286 287 # Add top-level targets 288 foreach(target ${ARG_EXTRA_TARGETS}) 289 if(DEFINED ${target}) 290 set(external_target "${${target}}") 291 else() 292 set(external_target "${target}") 293 endif() 294 llvm_ExternalProject_BuildCmd(build_runtime_cmd ${external_target} ${BINARY_DIR}) 295 add_custom_target(${target} 296 COMMAND ${build_runtime_cmd} 297 DEPENDS ${name}-configure 298 WORKING_DIRECTORY ${BINARY_DIR} 299 VERBATIM 300 USES_TERMINAL) 301 endforeach() 302endfunction() 303