1include(CMakePushCheckState) 2include(CheckSymbolExists) 3 4# Because compiler-rt spends a lot of time setting up custom compile flags, 5# define a handy helper function for it. The compile flags setting in CMake 6# has serious issues that make its syntax challenging at best. 7function(set_target_compile_flags target) 8 set(argstring "") 9 foreach(arg ${ARGN}) 10 set(argstring "${argstring} ${arg}") 11 endforeach() 12 set_property(TARGET ${target} PROPERTY COMPILE_FLAGS "${argstring}") 13endfunction() 14 15function(set_target_link_flags target) 16 set(argstring "") 17 foreach(arg ${ARGN}) 18 set(argstring "${argstring} ${arg}") 19 endforeach() 20 set_property(TARGET ${target} PROPERTY LINK_FLAGS "${argstring}") 21endfunction() 22 23# Set the variable var_PYBOOL to True if var holds a true-ish string, 24# otherwise set it to False. 25macro(pythonize_bool var) 26 if (${var}) 27 set(${var}_PYBOOL True) 28 else() 29 set(${var}_PYBOOL False) 30 endif() 31endmacro() 32 33# Appends value to all lists in ARGN, if the condition is true. 34macro(append_list_if condition value) 35 if(${condition}) 36 foreach(list ${ARGN}) 37 list(APPEND ${list} ${value}) 38 endforeach() 39 endif() 40endmacro() 41 42# Appends value to all strings in ARGN, if the condition is true. 43macro(append_string_if condition value) 44 if(${condition}) 45 foreach(str ${ARGN}) 46 set(${str} "${${str}} ${value}") 47 endforeach() 48 endif() 49endmacro() 50 51macro(append_rtti_flag polarity list) 52 if(${polarity}) 53 append_list_if(COMPILER_RT_HAS_FRTTI_FLAG -frtti ${list}) 54 append_list_if(COMPILER_RT_HAS_GR_FLAG /GR ${list}) 55 else() 56 append_list_if(COMPILER_RT_HAS_FNO_RTTI_FLAG -fno-rtti ${list}) 57 append_list_if(COMPILER_RT_HAS_GR_FLAG /GR- ${list}) 58 endif() 59endmacro() 60 61macro(list_intersect output input1 input2) 62 set(${output}) 63 foreach(it ${${input1}}) 64 list(FIND ${input2} ${it} index) 65 if( NOT (index EQUAL -1)) 66 list(APPEND ${output} ${it}) 67 endif() 68 endforeach() 69endmacro() 70 71function(list_replace input_list old new) 72 set(replaced_list) 73 foreach(item ${${input_list}}) 74 if(${item} STREQUAL ${old}) 75 list(APPEND replaced_list ${new}) 76 else() 77 list(APPEND replaced_list ${item}) 78 endif() 79 endforeach() 80 set(${input_list} "${replaced_list}" PARENT_SCOPE) 81endfunction() 82 83# Takes ${ARGN} and puts only supported architectures in @out_var list. 84function(filter_available_targets out_var) 85 set(archs ${${out_var}}) 86 foreach(arch ${ARGN}) 87 list(FIND COMPILER_RT_SUPPORTED_ARCH ${arch} ARCH_INDEX) 88 if(NOT (ARCH_INDEX EQUAL -1) AND CAN_TARGET_${arch}) 89 list(APPEND archs ${arch}) 90 endif() 91 endforeach() 92 set(${out_var} ${archs} PARENT_SCOPE) 93endfunction() 94 95# Add $arch as supported with no additional flags. 96macro(add_default_target_arch arch) 97 set(TARGET_${arch}_CFLAGS "") 98 set(CAN_TARGET_${arch} 1) 99 list(APPEND COMPILER_RT_SUPPORTED_ARCH ${arch}) 100endmacro() 101 102function(check_compile_definition def argstring out_var) 103 if("${def}" STREQUAL "") 104 set(${out_var} TRUE PARENT_SCOPE) 105 return() 106 endif() 107 cmake_push_check_state() 108 set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${argstring}") 109 check_symbol_exists(${def} "" ${out_var}) 110 cmake_pop_check_state() 111endfunction() 112 113# test_target_arch(<arch> <def> <target flags...>) 114# Checks if architecture is supported: runs host compiler with provided 115# flags to verify that: 116# 1) <def> is defined (if non-empty) 117# 2) simple file can be successfully built. 118# If successful, saves target flags for this architecture. 119macro(test_target_arch arch def) 120 set(TARGET_${arch}_CFLAGS ${ARGN}) 121 set(TARGET_${arch}_LINK_FLAGS ${ARGN}) 122 set(argstring "") 123 foreach(arg ${ARGN}) 124 set(argstring "${argstring} ${arg}") 125 endforeach() 126 check_compile_definition("${def}" "${argstring}" HAS_${arch}_DEF) 127 if(NOT DEFINED CAN_TARGET_${arch}) 128 if(NOT HAS_${arch}_DEF) 129 set(CAN_TARGET_${arch} FALSE) 130 elseif(TEST_COMPILE_ONLY) 131 try_compile_only(CAN_TARGET_${arch} FLAGS ${TARGET_${arch}_CFLAGS}) 132 else() 133 set(FLAG_NO_EXCEPTIONS "") 134 if(COMPILER_RT_HAS_FNO_EXCEPTIONS_FLAG) 135 set(FLAG_NO_EXCEPTIONS " -fno-exceptions ") 136 endif() 137 set(SAVED_CMAKE_EXE_LINKER_FLAGS ${CMAKE_EXE_LINKER_FLAGS}) 138 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${argstring}") 139 try_compile(CAN_TARGET_${arch} ${CMAKE_BINARY_DIR} ${SIMPLE_SOURCE} 140 COMPILE_DEFINITIONS "${TARGET_${arch}_CFLAGS} ${FLAG_NO_EXCEPTIONS}" 141 OUTPUT_VARIABLE TARGET_${arch}_OUTPUT) 142 set(CMAKE_EXE_LINKER_FLAGS ${SAVED_CMAKE_EXE_LINKER_FLAGS}) 143 endif() 144 endif() 145 if(${CAN_TARGET_${arch}}) 146 list(APPEND COMPILER_RT_SUPPORTED_ARCH ${arch}) 147 elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" STREQUAL "${arch}" AND 148 COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE) 149 # Bail out if we cannot target the architecture we plan to test. 150 message(FATAL_ERROR "Cannot compile for ${arch}:\n${TARGET_${arch}_OUTPUT}") 151 endif() 152endmacro() 153 154macro(detect_target_arch) 155 check_symbol_exists(__arm__ "" __ARM) 156 check_symbol_exists(__aarch64__ "" __AARCH64) 157 check_symbol_exists(__x86_64__ "" __X86_64) 158 check_symbol_exists(__i386__ "" __I386) 159 check_symbol_exists(__mips__ "" __MIPS) 160 check_symbol_exists(__mips64__ "" __MIPS64) 161 check_symbol_exists(__powerpc__ "" __PPC) 162 check_symbol_exists(__powerpc64__ "" __PPC64) 163 check_symbol_exists(__powerpc64le__ "" __PPC64LE) 164 check_symbol_exists(__riscv "" __RISCV) 165 check_symbol_exists(__s390x__ "" __S390X) 166 check_symbol_exists(__sparc "" __SPARC) 167 check_symbol_exists(__sparcv9 "" __SPARCV9) 168 check_symbol_exists(__wasm32__ "" __WEBASSEMBLY32) 169 check_symbol_exists(__wasm64__ "" __WEBASSEMBLY64) 170 check_symbol_exists(__ve__ "" __VE) 171 if(__ARM) 172 add_default_target_arch(arm) 173 elseif(__AARCH64) 174 add_default_target_arch(aarch64) 175 elseif(__X86_64) 176 add_default_target_arch(x86_64) 177 elseif(__I386) 178 add_default_target_arch(i386) 179 elseif(__MIPS64) # must be checked before __MIPS 180 add_default_target_arch(mips64) 181 elseif(__MIPS) 182 add_default_target_arch(mips) 183 elseif(__PPC64) # must be checked before __PPC 184 add_default_target_arch(powerpc64) 185 elseif(__PPC64LE) 186 add_default_target_arch(powerpc64le) 187 elseif(__PPC) 188 add_default_target_arch(powerpc) 189 elseif(__RISCV) 190 if(CMAKE_SIZEOF_VOID_P EQUAL "4") 191 add_default_target_arch(riscv32) 192 elseif(CMAKE_SIZEOF_VOID_P EQUAL "8") 193 add_default_target_arch(riscv64) 194 else() 195 message(FATAL_ERROR "Unsupport XLEN for RISC-V") 196 endif() 197 elseif(__S390X) 198 add_default_target_arch(s390x) 199 elseif(__SPARCV9) 200 add_default_target_arch(sparcv9) 201 elseif(__SPARC) 202 add_default_target_arch(sparc) 203 elseif(__WEBASSEMBLY32) 204 add_default_target_arch(wasm32) 205 elseif(__WEBASSEMBLY64) 206 add_default_target_arch(wasm64) 207 elseif(__VE) 208 add_default_target_arch(ve) 209 endif() 210endmacro() 211 212function(get_compiler_rt_root_source_dir ROOT_DIR_VAR) 213 # Compute the path to the root of the Compiler-RT source tree 214 # regardless of how the project was configured. 215 # 216 # This function is useful because using `${CMAKE_SOURCE_DIR}` 217 # is error prone due to the numerous ways Compiler-RT can be 218 # configured. 219 # 220 # `ROOT_DIR_VAR` - the name of the variable to write the result to. 221 # 222 # TODO(dliew): When CMake min version is 3.17 or newer use 223 # `CMAKE_CURRENT_FUNCTION_LIST_DIR` instead. 224 if ("${ROOT_DIR_VAR}" STREQUAL "") 225 message(FATAL_ERROR "ROOT_DIR_VAR cannot be empty") 226 endif() 227 228 # Compiler-rt supports different source root paths. 229 # Handle each case here. 230 set(PATH_TO_COMPILER_RT_SOURCE_ROOT "") 231 if (DEFINED CompilerRTBuiltins_SOURCE_DIR) 232 # Compiler-RT Builtins standalone build. 233 # `llvm-project/compiler-rt/lib/builtins` 234 set(PATH_TO_COMPILER_RT_SOURCE_ROOT "${CompilerRTBuiltins_SOURCE_DIR}/../../") 235 elseif(DEFINED CompilerRT_SOURCE_DIR) 236 # Compiler-RT standalone build. 237 # `llvm-project/compiler-rt` 238 set(PATH_TO_COMPILER_RT_SOURCE_ROOT "${CompilerRT_SOURCE_DIR}") 239 elseif (EXISTS "${CMAKE_SOURCE_DIR}/../compiler-rt") 240 # In tree build with LLVM as the root project. 241 # See `llvm-project/projects/`. 242 # Assumes monorepo layout. 243 set(PATH_TO_COMPILER_RT_SOURCE_ROOT "${CMAKE_SOURCE_DIR}/../compiler-rt") 244 else() 245 message(FATAL_ERROR "Unhandled Compiler-RT source root configuration.") 246 endif() 247 248 get_filename_component(ROOT_DIR "${PATH_TO_COMPILER_RT_SOURCE_ROOT}" ABSOLUTE) 249 if (NOT EXISTS "${ROOT_DIR}") 250 message(FATAL_ERROR "Path \"${ROOT_DIR}\" doesn't exist") 251 endif() 252 253 # Sanity check: Make sure we can locate the current source file via the 254 # computed path. 255 set(PATH_TO_CURRENT_FILE "${ROOT_DIR}/cmake/Modules/CompilerRTUtils.cmake") 256 if (NOT EXISTS "${PATH_TO_CURRENT_FILE}") 257 message(FATAL_ERROR "Could not find \"${PATH_TO_CURRENT_FILE}\"") 258 endif() 259 260 set("${ROOT_DIR_VAR}" "${ROOT_DIR}" PARENT_SCOPE) 261endfunction() 262 263macro(load_llvm_config) 264 if (NOT LLVM_CONFIG_PATH) 265 find_program(LLVM_CONFIG_PATH "llvm-config" 266 DOC "Path to llvm-config binary") 267 if (NOT LLVM_CONFIG_PATH) 268 message(WARNING "UNSUPPORTED COMPILER-RT CONFIGURATION DETECTED: " 269 "llvm-config not found.\n" 270 "Reconfigure with -DLLVM_CONFIG_PATH=path/to/llvm-config.") 271 endif() 272 endif() 273 274 # Compute path to LLVM sources assuming the monorepo layout. 275 # We don't set `LLVM_MAIN_SRC_DIR` directly to avoid overriding a user provided 276 # CMake cache value. 277 get_compiler_rt_root_source_dir(COMPILER_RT_ROOT_SRC_PATH) 278 get_filename_component(LLVM_MAIN_SRC_DIR_DEFAULT "${COMPILER_RT_ROOT_SRC_PATH}/../llvm" ABSOLUTE) 279 if (NOT EXISTS "${LLVM_MAIN_SRC_DIR_DEFAULT}") 280 # TODO(dliew): Remove this legacy fallback path. 281 message(WARNING 282 "LLVM source tree not found at \"${LLVM_MAIN_SRC_DIR_DEFAULT}\". " 283 "You are not using the monorepo layout. This configuration is DEPRECATED.") 284 endif() 285 286 set(FOUND_LLVM_CMAKE_PATH FALSE) 287 if (LLVM_CONFIG_PATH) 288 execute_process( 289 COMMAND ${LLVM_CONFIG_PATH} "--obj-root" "--bindir" "--libdir" "--src-root" "--includedir" 290 RESULT_VARIABLE HAD_ERROR 291 OUTPUT_VARIABLE CONFIG_OUTPUT) 292 if (HAD_ERROR) 293 message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}") 294 endif() 295 string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" CONFIG_OUTPUT ${CONFIG_OUTPUT}) 296 list(GET CONFIG_OUTPUT 0 BINARY_DIR) 297 list(GET CONFIG_OUTPUT 1 TOOLS_BINARY_DIR) 298 list(GET CONFIG_OUTPUT 2 LIBRARY_DIR) 299 list(GET CONFIG_OUTPUT 3 MAIN_SRC_DIR) 300 list(GET CONFIG_OUTPUT 4 INCLUDE_DIR) 301 302 set(LLVM_BINARY_DIR ${BINARY_DIR} CACHE PATH "Path to LLVM build tree") 303 set(LLVM_LIBRARY_DIR ${LIBRARY_DIR} CACHE PATH "Path to llvm/lib") 304 set(LLVM_TOOLS_BINARY_DIR ${TOOLS_BINARY_DIR} CACHE PATH "Path to llvm/bin") 305 set(LLVM_INCLUDE_DIR ${INCLUDE_DIR} CACHE PATH "Paths to LLVM headers") 306 307 if (NOT EXISTS "${LLVM_MAIN_SRC_DIR_DEFAULT}") 308 # TODO(dliew): Remove this legacy fallback path. 309 message(WARNING 310 "Consulting llvm-config for the LLVM source path " 311 "as a fallback. This behavior will be removed in the future.") 312 # We don't set `LLVM_MAIN_SRC_DIR` directly to avoid overriding a user 313 # provided CMake cache value. 314 set(LLVM_MAIN_SRC_DIR_DEFAULT "${MAIN_SRC_DIR}") 315 message(STATUS "Using LLVM source path (${LLVM_MAIN_SRC_DIR_DEFAULT}) from llvm-config") 316 endif() 317 318 # Detect if we have the LLVMXRay and TestingSupport library installed and 319 # available from llvm-config. 320 execute_process( 321 COMMAND ${LLVM_CONFIG_PATH} "--ldflags" "--libs" "xray" 322 RESULT_VARIABLE HAD_ERROR 323 OUTPUT_VARIABLE CONFIG_OUTPUT 324 ERROR_QUIET) 325 if (HAD_ERROR) 326 message(WARNING "llvm-config finding xray failed with status ${HAD_ERROR}") 327 set(COMPILER_RT_HAS_LLVMXRAY FALSE) 328 else() 329 string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" CONFIG_OUTPUT ${CONFIG_OUTPUT}) 330 list(GET CONFIG_OUTPUT 0 LDFLAGS) 331 list(GET CONFIG_OUTPUT 1 LIBLIST) 332 file(TO_CMAKE_PATH "${LDFLAGS}" LDFLAGS) 333 file(TO_CMAKE_PATH "${LIBLIST}" LIBLIST) 334 set(LLVM_XRAY_LDFLAGS ${LDFLAGS} CACHE STRING "Linker flags for LLVMXRay library") 335 set(LLVM_XRAY_LIBLIST ${LIBLIST} CACHE STRING "Library list for LLVMXRay") 336 set(COMPILER_RT_HAS_LLVMXRAY TRUE) 337 endif() 338 339 set(COMPILER_RT_HAS_LLVMTESTINGSUPPORT FALSE) 340 execute_process( 341 COMMAND ${LLVM_CONFIG_PATH} "--ldflags" "--libs" "testingsupport" 342 RESULT_VARIABLE HAD_ERROR 343 OUTPUT_VARIABLE CONFIG_OUTPUT 344 ERROR_QUIET) 345 if (HAD_ERROR) 346 message(WARNING "llvm-config finding testingsupport failed with status ${HAD_ERROR}") 347 elseif(COMPILER_RT_INCLUDE_TESTS) 348 string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" CONFIG_OUTPUT ${CONFIG_OUTPUT}) 349 list(GET CONFIG_OUTPUT 0 LDFLAGS) 350 list(GET CONFIG_OUTPUT 1 LIBLIST) 351 if (LIBLIST STREQUAL "") 352 message(WARNING "testingsupport library not installed, some tests will be skipped") 353 else() 354 file(TO_CMAKE_PATH "${LDFLAGS}" LDFLAGS) 355 file(TO_CMAKE_PATH "${LIBLIST}" LIBLIST) 356 set(LLVM_TESTINGSUPPORT_LDFLAGS ${LDFLAGS} CACHE STRING "Linker flags for LLVMTestingSupport library") 357 set(LLVM_TESTINGSUPPORT_LIBLIST ${LIBLIST} CACHE STRING "Library list for LLVMTestingSupport") 358 set(COMPILER_RT_HAS_LLVMTESTINGSUPPORT TRUE) 359 endif() 360 endif() 361 362 # Make use of LLVM CMake modules. 363 # --cmakedir is supported since llvm r291218 (4.0 release) 364 execute_process( 365 COMMAND ${LLVM_CONFIG_PATH} --cmakedir 366 RESULT_VARIABLE HAD_ERROR 367 OUTPUT_VARIABLE CONFIG_OUTPUT) 368 if(NOT HAD_ERROR) 369 string(STRIP "${CONFIG_OUTPUT}" LLVM_CMAKE_PATH_FROM_LLVM_CONFIG) 370 file(TO_CMAKE_PATH ${LLVM_CMAKE_PATH_FROM_LLVM_CONFIG} LLVM_CMAKE_PATH) 371 else() 372 file(TO_CMAKE_PATH ${LLVM_BINARY_DIR} LLVM_BINARY_DIR_CMAKE_STYLE) 373 set(LLVM_CMAKE_PATH "${LLVM_BINARY_DIR_CMAKE_STYLE}/lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm") 374 endif() 375 376 if (EXISTS "${LLVM_CMAKE_PATH}") 377 list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}") 378 # Get some LLVM variables from LLVMConfig. 379 include("${LLVM_CMAKE_PATH}/LLVMConfig.cmake") 380 set(FOUND_LLVM_CMAKE_PATH TRUE) 381 else() 382 set(FOUND_LLVM_CMAKE_PATH FALSE) 383 message(WARNING "LLVM CMake path (${LLVM_CMAKE_PATH}) reported by llvm-config does not exist") 384 endif() 385 386 set(LLVM_LIBRARY_OUTPUT_INTDIR 387 ${LLVM_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX}) 388 endif() 389 390 # Finally set the cache variable now that `llvm-config` has also had a chance 391 # to set `LLVM_MAIN_SRC_DIR_DEFAULT`. 392 set(LLVM_MAIN_SRC_DIR "${LLVM_MAIN_SRC_DIR_DEFAULT}" CACHE PATH "Path to LLVM source tree") 393 message(STATUS "LLVM_MAIN_SRC_DIR: \"${LLVM_MAIN_SRC_DIR}\"") 394 if (NOT EXISTS "${LLVM_MAIN_SRC_DIR}") 395 # TODO(dliew): Make this a hard error 396 message(WARNING "LLVM_MAIN_SRC_DIR (${LLVM_MAIN_SRC_DIR}) does not exist. " 397 "You can override the inferred path by adding " 398 "`-DLLVM_MAIN_SRC_DIR=<path_to_llvm_src>` to your CMake invocation " 399 "where `<path_to_llvm_src>` is the path to the `llvm` directory in " 400 "the `llvm-project` repo. " 401 "This will be treated as error in the future.") 402 endif() 403 404 if (NOT FOUND_LLVM_CMAKE_PATH) 405 # This configuration tries to configure without the prescence of `LLVMConfig.cmake`. It is 406 # intended for testing purposes (generating the lit test suites) and will likely not support 407 # a build of the runtimes in compiler-rt. 408 include(CompilerRTMockLLVMCMakeConfig) 409 compiler_rt_mock_llvm_cmake_config() 410 endif() 411 412endmacro() 413 414macro(construct_compiler_rt_default_triple) 415 if(COMPILER_RT_DEFAULT_TARGET_ONLY) 416 if(DEFINED COMPILER_RT_DEFAULT_TARGET_TRIPLE) 417 message(FATAL_ERROR "COMPILER_RT_DEFAULT_TARGET_TRIPLE isn't supported when building for default target only") 418 endif() 419 set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${CMAKE_C_COMPILER_TARGET}) 420 else() 421 set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${TARGET_TRIPLE} CACHE STRING 422 "Default triple for which compiler-rt runtimes will be built.") 423 endif() 424 425 if(DEFINED COMPILER_RT_TEST_TARGET_TRIPLE) 426 # Backwards compatibility: this variable used to be called 427 # COMPILER_RT_TEST_TARGET_TRIPLE. 428 set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${COMPILER_RT_TEST_TARGET_TRIPLE}) 429 endif() 430 431 string(REPLACE "-" ";" TARGET_TRIPLE_LIST ${COMPILER_RT_DEFAULT_TARGET_TRIPLE}) 432 list(GET TARGET_TRIPLE_LIST 0 COMPILER_RT_DEFAULT_TARGET_ARCH) 433 434 # Map various forms of the architecture names to the canonical forms 435 # (as they are used by clang, see getArchNameForCompilerRTLib). 436 if("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "^i.86$") 437 # Android uses i686, but that's remapped at a later stage. 438 set(COMPILER_RT_DEFAULT_TARGET_ARCH "i386") 439 endif() 440 441 # Determine if test target triple is specified explicitly, and doesn't match the 442 # default. 443 if(NOT COMPILER_RT_DEFAULT_TARGET_TRIPLE STREQUAL TARGET_TRIPLE) 444 set(COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE TRUE) 445 else() 446 set(COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE FALSE) 447 endif() 448endmacro() 449 450# Filter out generic versions of routines that are re-implemented in an 451# architecture specific manner. This prevents multiple definitions of the same 452# symbols, making the symbol selection non-deterministic. 453# 454# We follow the convention that a source file that exists in a sub-directory 455# (e.g. `ppc/divtc3.c`) is architecture-specific and that if a generic 456# implementation exists it will be a top-level source file with the same name 457# modulo the file extension (e.g. `divtc3.c`). 458function(filter_builtin_sources inout_var name) 459 set(intermediate ${${inout_var}}) 460 foreach(_file ${intermediate}) 461 get_filename_component(_file_dir ${_file} DIRECTORY) 462 if (NOT "${_file_dir}" STREQUAL "") 463 # Architecture specific file. If a generic version exists, print a notice 464 # and ensure that it is removed from the file list. 465 get_filename_component(_name ${_file} NAME) 466 string(REGEX REPLACE "\\.S$" ".c" _cname "${_name}") 467 if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${_cname}") 468 message(STATUS "For ${name} builtins preferring ${_file} to ${_cname}") 469 list(REMOVE_ITEM intermediate ${_cname}) 470 endif() 471 endif() 472 endforeach() 473 set(${inout_var} ${intermediate} PARENT_SCOPE) 474endfunction() 475 476function(get_compiler_rt_target arch variable) 477 string(FIND ${COMPILER_RT_DEFAULT_TARGET_TRIPLE} "-" dash_index) 478 string(SUBSTRING ${COMPILER_RT_DEFAULT_TARGET_TRIPLE} ${dash_index} -1 triple_suffix) 479 if(COMPILER_RT_DEFAULT_TARGET_ONLY) 480 # Use exact spelling when building only for the target specified to CMake. 481 set(target "${COMPILER_RT_DEFAULT_TARGET_TRIPLE}") 482 elseif(ANDROID AND ${arch} STREQUAL "i386") 483 set(target "i686${triple_suffix}") 484 else() 485 set(target "${arch}${triple_suffix}") 486 endif() 487 set(${variable} ${target} PARENT_SCOPE) 488endfunction() 489 490function(get_compiler_rt_install_dir arch install_dir) 491 if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE) 492 get_compiler_rt_target(${arch} target) 493 set(${install_dir} ${COMPILER_RT_INSTALL_PATH}/lib/${target} PARENT_SCOPE) 494 else() 495 set(${install_dir} ${COMPILER_RT_LIBRARY_INSTALL_DIR} PARENT_SCOPE) 496 endif() 497endfunction() 498 499function(get_compiler_rt_output_dir arch output_dir) 500 if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE) 501 get_compiler_rt_target(${arch} target) 502 set(${output_dir} ${COMPILER_RT_OUTPUT_DIR}/lib/${target} PARENT_SCOPE) 503 else() 504 set(${output_dir} ${COMPILER_RT_LIBRARY_OUTPUT_DIR} PARENT_SCOPE) 505 endif() 506endfunction() 507 508# compiler_rt_process_sources( 509# <OUTPUT_VAR> 510# <SOURCE_FILE> ... 511# [ADDITIONAL_HEADERS <header> ...] 512# ) 513# 514# Process the provided sources and write the list of new sources 515# into `<OUTPUT_VAR>`. 516# 517# ADDITIONAL_HEADERS - Adds the supplied header to list of sources for IDEs. 518# 519# This function is very similar to `llvm_process_sources()` but exists here 520# because we need to support standalone builds of compiler-rt. 521function(compiler_rt_process_sources OUTPUT_VAR) 522 cmake_parse_arguments( 523 ARG 524 "" 525 "" 526 "ADDITIONAL_HEADERS" 527 ${ARGN} 528 ) 529 set(sources ${ARG_UNPARSED_ARGUMENTS}) 530 set(headers "") 531 if (XCODE OR MSVC_IDE OR CMAKE_EXTRA_GENERATOR) 532 # For IDEs we need to tell CMake about header files. 533 # Otherwise they won't show up in UI. 534 set(headers ${ARG_ADDITIONAL_HEADERS}) 535 list(LENGTH headers headers_length) 536 if (${headers_length} GREATER 0) 537 set_source_files_properties(${headers} 538 PROPERTIES HEADER_FILE_ONLY ON) 539 endif() 540 endif() 541 set("${OUTPUT_VAR}" ${sources} ${headers} PARENT_SCOPE) 542endfunction() 543 544# Create install targets for a library and its parent component (if specified). 545function(add_compiler_rt_install_targets name) 546 cmake_parse_arguments(ARG "" "PARENT_TARGET" "" ${ARGN}) 547 548 if(ARG_PARENT_TARGET AND NOT TARGET install-${ARG_PARENT_TARGET}) 549 # The parent install target specifies the parent component to scrape up 550 # anything not installed by the individual install targets, and to handle 551 # installation when running the multi-configuration generators. 552 add_custom_target(install-${ARG_PARENT_TARGET} 553 DEPENDS ${ARG_PARENT_TARGET} 554 COMMAND "${CMAKE_COMMAND}" 555 -DCMAKE_INSTALL_COMPONENT=${ARG_PARENT_TARGET} 556 -P "${CMAKE_BINARY_DIR}/cmake_install.cmake") 557 add_custom_target(install-${ARG_PARENT_TARGET}-stripped 558 DEPENDS ${ARG_PARENT_TARGET} 559 COMMAND "${CMAKE_COMMAND}" 560 -DCMAKE_INSTALL_COMPONENT=${ARG_PARENT_TARGET} 561 -DCMAKE_INSTALL_DO_STRIP=1 562 -P "${CMAKE_BINARY_DIR}/cmake_install.cmake") 563 set_target_properties(install-${ARG_PARENT_TARGET} PROPERTIES 564 FOLDER "Compiler-RT Misc") 565 set_target_properties(install-${ARG_PARENT_TARGET}-stripped PROPERTIES 566 FOLDER "Compiler-RT Misc") 567 add_dependencies(install-compiler-rt install-${ARG_PARENT_TARGET}) 568 add_dependencies(install-compiler-rt-stripped install-${ARG_PARENT_TARGET}-stripped) 569 endif() 570 571 # We only want to generate per-library install targets if you aren't using 572 # an IDE because the extra targets get cluttered in IDEs. 573 if(NOT CMAKE_CONFIGURATION_TYPES) 574 add_custom_target(install-${name} 575 DEPENDS ${name} 576 COMMAND "${CMAKE_COMMAND}" 577 -DCMAKE_INSTALL_COMPONENT=${name} 578 -P "${CMAKE_BINARY_DIR}/cmake_install.cmake") 579 add_custom_target(install-${name}-stripped 580 DEPENDS ${name} 581 COMMAND "${CMAKE_COMMAND}" 582 -DCMAKE_INSTALL_COMPONENT=${name} 583 -DCMAKE_INSTALL_DO_STRIP=1 584 -P "${CMAKE_BINARY_DIR}/cmake_install.cmake") 585 # If you have a parent target specified, we bind the new install target 586 # to the parent install target. 587 if(LIB_PARENT_TARGET) 588 add_dependencies(install-${LIB_PARENT_TARGET} install-${name}) 589 add_dependencies(install-${LIB_PARENT_TARGET}-stripped install-${name}-stripped) 590 endif() 591 endif() 592endfunction() 593