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 if(CMAKE_SIZEOF_VOID_P EQUAL "4") 177 add_default_target_arch(x32) 178 elseif(CMAKE_SIZEOF_VOID_P EQUAL "8") 179 add_default_target_arch(x86_64) 180 else() 181 message(FATAL_ERROR "Unsupported pointer size for X86_64") 182 endif() 183 elseif(__I386) 184 add_default_target_arch(i386) 185 elseif(__MIPS64) # must be checked before __MIPS 186 add_default_target_arch(mips64) 187 elseif(__MIPS) 188 add_default_target_arch(mips) 189 elseif(__PPC64) # must be checked before __PPC 190 add_default_target_arch(powerpc64) 191 elseif(__PPC64LE) 192 add_default_target_arch(powerpc64le) 193 elseif(__PPC) 194 add_default_target_arch(powerpc) 195 elseif(__RISCV) 196 if(CMAKE_SIZEOF_VOID_P EQUAL "4") 197 add_default_target_arch(riscv32) 198 elseif(CMAKE_SIZEOF_VOID_P EQUAL "8") 199 add_default_target_arch(riscv64) 200 else() 201 message(FATAL_ERROR "Unsupport XLEN for RISC-V") 202 endif() 203 elseif(__S390X) 204 add_default_target_arch(s390x) 205 elseif(__SPARCV9) 206 add_default_target_arch(sparcv9) 207 elseif(__SPARC) 208 add_default_target_arch(sparc) 209 elseif(__WEBASSEMBLY32) 210 add_default_target_arch(wasm32) 211 elseif(__WEBASSEMBLY64) 212 add_default_target_arch(wasm64) 213 elseif(__VE) 214 add_default_target_arch(ve) 215 endif() 216endmacro() 217 218function(get_compiler_rt_root_source_dir ROOT_DIR_VAR) 219 # Compute the path to the root of the Compiler-RT source tree 220 # regardless of how the project was configured. 221 # 222 # This function is useful because using `${CMAKE_SOURCE_DIR}` 223 # is error prone due to the numerous ways Compiler-RT can be 224 # configured. 225 # 226 # `ROOT_DIR_VAR` - the name of the variable to write the result to. 227 # 228 # TODO(dliew): When CMake min version is 3.17 or newer use 229 # `CMAKE_CURRENT_FUNCTION_LIST_DIR` instead. 230 if ("${ROOT_DIR_VAR}" STREQUAL "") 231 message(FATAL_ERROR "ROOT_DIR_VAR cannot be empty") 232 endif() 233 234 # Compiler-rt supports different source root paths. 235 # Handle each case here. 236 set(PATH_TO_COMPILER_RT_SOURCE_ROOT "") 237 if (DEFINED CompilerRTBuiltins_SOURCE_DIR) 238 # Compiler-RT Builtins standalone build. 239 # `llvm-project/compiler-rt/lib/builtins` 240 set(PATH_TO_COMPILER_RT_SOURCE_ROOT "${CompilerRTBuiltins_SOURCE_DIR}/../../") 241 elseif (DEFINED CompilerRTCRT_SOURCE_DIR) 242 # Compiler-RT CRT standalone build. 243 # `llvm-project/compiler-rt/lib/crt` 244 set(PATH_TO_COMPILER_RT_SOURCE_ROOT "${CompilerRTCRT_SOURCE_DIR}/../../") 245 elseif(DEFINED CompilerRT_SOURCE_DIR) 246 # Compiler-RT standalone build. 247 # `llvm-project/compiler-rt` 248 set(PATH_TO_COMPILER_RT_SOURCE_ROOT "${CompilerRT_SOURCE_DIR}") 249 elseif (EXISTS "${CMAKE_SOURCE_DIR}/../compiler-rt") 250 # In tree build with LLVM as the root project. 251 # See `llvm-project/projects/`. 252 # Assumes monorepo layout. 253 set(PATH_TO_COMPILER_RT_SOURCE_ROOT "${CMAKE_SOURCE_DIR}/../compiler-rt") 254 else() 255 message(FATAL_ERROR "Unhandled Compiler-RT source root configuration.") 256 endif() 257 258 get_filename_component(ROOT_DIR "${PATH_TO_COMPILER_RT_SOURCE_ROOT}" ABSOLUTE) 259 if (NOT EXISTS "${ROOT_DIR}") 260 message(FATAL_ERROR "Path \"${ROOT_DIR}\" doesn't exist") 261 endif() 262 263 # Sanity check: Make sure we can locate the current source file via the 264 # computed path. 265 set(PATH_TO_CURRENT_FILE "${ROOT_DIR}/cmake/Modules/CompilerRTUtils.cmake") 266 if (NOT EXISTS "${PATH_TO_CURRENT_FILE}") 267 message(FATAL_ERROR "Could not find \"${PATH_TO_CURRENT_FILE}\"") 268 endif() 269 270 set("${ROOT_DIR_VAR}" "${ROOT_DIR}" PARENT_SCOPE) 271endfunction() 272 273macro(load_llvm_config) 274 if (NOT LLVM_CONFIG_PATH) 275 find_program(LLVM_CONFIG_PATH "llvm-config" 276 DOC "Path to llvm-config binary") 277 if (NOT LLVM_CONFIG_PATH) 278 message(WARNING "UNSUPPORTED COMPILER-RT CONFIGURATION DETECTED: " 279 "llvm-config not found.\n" 280 "Reconfigure with -DLLVM_CONFIG_PATH=path/to/llvm-config.") 281 endif() 282 endif() 283 284 # Compute path to LLVM sources assuming the monorepo layout. 285 # We don't set `LLVM_MAIN_SRC_DIR` directly to avoid overriding a user provided 286 # CMake cache value. 287 get_compiler_rt_root_source_dir(COMPILER_RT_ROOT_SRC_PATH) 288 get_filename_component(LLVM_MAIN_SRC_DIR_DEFAULT "${COMPILER_RT_ROOT_SRC_PATH}/../llvm" ABSOLUTE) 289 if (NOT EXISTS "${LLVM_MAIN_SRC_DIR_DEFAULT}") 290 # TODO(dliew): Remove this legacy fallback path. 291 message(WARNING 292 "LLVM source tree not found at \"${LLVM_MAIN_SRC_DIR_DEFAULT}\". " 293 "You are not using the monorepo layout. This configuration is DEPRECATED.") 294 endif() 295 296 set(FOUND_LLVM_CMAKE_DIR FALSE) 297 if (LLVM_CONFIG_PATH) 298 execute_process( 299 COMMAND ${LLVM_CONFIG_PATH} "--obj-root" "--bindir" "--libdir" "--src-root" "--includedir" 300 RESULT_VARIABLE HAD_ERROR 301 OUTPUT_VARIABLE CONFIG_OUTPUT) 302 if (HAD_ERROR) 303 message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}") 304 endif() 305 string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" CONFIG_OUTPUT ${CONFIG_OUTPUT}) 306 list(GET CONFIG_OUTPUT 0 BINARY_DIR) 307 list(GET CONFIG_OUTPUT 1 TOOLS_BINARY_DIR) 308 list(GET CONFIG_OUTPUT 2 LIBRARY_DIR) 309 list(GET CONFIG_OUTPUT 3 MAIN_SRC_DIR) 310 list(GET CONFIG_OUTPUT 4 INCLUDE_DIR) 311 312 set(LLVM_BINARY_DIR ${BINARY_DIR} CACHE PATH "Path to LLVM build tree") 313 set(LLVM_LIBRARY_DIR ${LIBRARY_DIR} CACHE PATH "Path to llvm/lib") 314 set(LLVM_TOOLS_BINARY_DIR ${TOOLS_BINARY_DIR} CACHE PATH "Path to llvm/bin") 315 set(LLVM_INCLUDE_DIR ${INCLUDE_DIR} CACHE PATH "Paths to LLVM headers") 316 317 if (NOT EXISTS "${LLVM_MAIN_SRC_DIR_DEFAULT}") 318 # TODO(dliew): Remove this legacy fallback path. 319 message(WARNING 320 "Consulting llvm-config for the LLVM source path " 321 "as a fallback. This behavior will be removed in the future.") 322 # We don't set `LLVM_MAIN_SRC_DIR` directly to avoid overriding a user 323 # provided CMake cache value. 324 set(LLVM_MAIN_SRC_DIR_DEFAULT "${MAIN_SRC_DIR}") 325 message(STATUS "Using LLVM source path (${LLVM_MAIN_SRC_DIR_DEFAULT}) from llvm-config") 326 endif() 327 328 # Detect if we have the LLVMXRay and TestingSupport library installed and 329 # available from llvm-config. 330 execute_process( 331 COMMAND ${LLVM_CONFIG_PATH} "--ldflags" "--libs" "xray" 332 RESULT_VARIABLE HAD_ERROR 333 OUTPUT_VARIABLE CONFIG_OUTPUT 334 ERROR_QUIET) 335 if (HAD_ERROR) 336 message(WARNING "llvm-config finding xray failed with status ${HAD_ERROR}") 337 set(COMPILER_RT_HAS_LLVMXRAY FALSE) 338 else() 339 string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" CONFIG_OUTPUT ${CONFIG_OUTPUT}) 340 list(GET CONFIG_OUTPUT 0 LDFLAGS) 341 list(GET CONFIG_OUTPUT 1 LIBLIST) 342 file(TO_CMAKE_PATH "${LDFLAGS}" LDFLAGS) 343 file(TO_CMAKE_PATH "${LIBLIST}" LIBLIST) 344 set(LLVM_XRAY_LDFLAGS ${LDFLAGS} CACHE STRING "Linker flags for LLVMXRay library") 345 set(LLVM_XRAY_LIBLIST ${LIBLIST} CACHE STRING "Library list for LLVMXRay") 346 set(COMPILER_RT_HAS_LLVMXRAY TRUE) 347 endif() 348 349 set(COMPILER_RT_HAS_LLVMTESTINGSUPPORT FALSE) 350 execute_process( 351 COMMAND ${LLVM_CONFIG_PATH} "--ldflags" "--libs" "testingsupport" 352 RESULT_VARIABLE HAD_ERROR 353 OUTPUT_VARIABLE CONFIG_OUTPUT 354 ERROR_QUIET) 355 if (HAD_ERROR) 356 message(WARNING "llvm-config finding testingsupport failed with status ${HAD_ERROR}") 357 elseif(COMPILER_RT_INCLUDE_TESTS) 358 string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" CONFIG_OUTPUT ${CONFIG_OUTPUT}) 359 list(GET CONFIG_OUTPUT 0 LDFLAGS) 360 list(GET CONFIG_OUTPUT 1 LIBLIST) 361 if (LIBLIST STREQUAL "") 362 message(WARNING "testingsupport library not installed, some tests will be skipped") 363 else() 364 file(TO_CMAKE_PATH "${LDFLAGS}" LDFLAGS) 365 file(TO_CMAKE_PATH "${LIBLIST}" LIBLIST) 366 set(LLVM_TESTINGSUPPORT_LDFLAGS ${LDFLAGS} CACHE STRING "Linker flags for LLVMTestingSupport library") 367 set(LLVM_TESTINGSUPPORT_LIBLIST ${LIBLIST} CACHE STRING "Library list for LLVMTestingSupport") 368 set(COMPILER_RT_HAS_LLVMTESTINGSUPPORT TRUE) 369 endif() 370 endif() 371 372 # Make use of LLVM CMake modules. 373 # --cmakedir is supported since llvm r291218 (4.0 release) 374 execute_process( 375 COMMAND ${LLVM_CONFIG_PATH} --cmakedir 376 RESULT_VARIABLE HAD_ERROR 377 OUTPUT_VARIABLE CONFIG_OUTPUT) 378 if(NOT HAD_ERROR) 379 string(STRIP "${CONFIG_OUTPUT}" LLVM_CMAKE_DIR_FROM_LLVM_CONFIG) 380 file(TO_CMAKE_PATH ${LLVM_CMAKE_DIR_FROM_LLVM_CONFIG} LLVM_CMAKE_DIR) 381 else() 382 file(TO_CMAKE_PATH ${LLVM_BINARY_DIR} LLVM_BINARY_DIR_CMAKE_STYLE) 383 set(LLVM_CMAKE_DIR "${LLVM_BINARY_DIR_CMAKE_STYLE}/lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm") 384 endif() 385 386 set(LLVM_CMAKE_INCLUDE_FILE "${LLVM_CMAKE_DIR}/LLVMConfig.cmake") 387 if (EXISTS "${LLVM_CMAKE_INCLUDE_FILE}") 388 list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_DIR}") 389 # Get some LLVM variables from LLVMConfig. 390 include("${LLVM_CMAKE_INCLUDE_FILE}") 391 set(FOUND_LLVM_CMAKE_DIR TRUE) 392 else() 393 set(FOUND_LLVM_CMAKE_DIR FALSE) 394 message(WARNING "LLVM CMake path (${LLVM_CMAKE_INCLUDE_FILE}) reported by llvm-config does not exist") 395 endif() 396 unset(LLVM_CMAKE_INCLUDE_FILE) 397 398 set(LLVM_LIBRARY_OUTPUT_INTDIR 399 ${LLVM_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX}) 400 endif() 401 402 # Finally set the cache variable now that `llvm-config` has also had a chance 403 # to set `LLVM_MAIN_SRC_DIR_DEFAULT`. 404 set(LLVM_MAIN_SRC_DIR "${LLVM_MAIN_SRC_DIR_DEFAULT}" CACHE PATH "Path to LLVM source tree") 405 message(STATUS "LLVM_MAIN_SRC_DIR: \"${LLVM_MAIN_SRC_DIR}\"") 406 if (NOT EXISTS "${LLVM_MAIN_SRC_DIR}") 407 # TODO(dliew): Make this a hard error 408 message(WARNING "LLVM_MAIN_SRC_DIR (${LLVM_MAIN_SRC_DIR}) does not exist. " 409 "You can override the inferred path by adding " 410 "`-DLLVM_MAIN_SRC_DIR=<path_to_llvm_src>` to your CMake invocation " 411 "where `<path_to_llvm_src>` is the path to the `llvm` directory in " 412 "the `llvm-project` repo. " 413 "This will be treated as error in the future.") 414 endif() 415 416 if (NOT FOUND_LLVM_CMAKE_DIR) 417 # This configuration tries to configure without the prescence of `LLVMConfig.cmake`. It is 418 # intended for testing purposes (generating the lit test suites) and will likely not support 419 # a build of the runtimes in compiler-rt. 420 include(CompilerRTMockLLVMCMakeConfig) 421 compiler_rt_mock_llvm_cmake_config() 422 endif() 423 424endmacro() 425 426macro(construct_compiler_rt_default_triple) 427 if(COMPILER_RT_DEFAULT_TARGET_ONLY) 428 if(DEFINED COMPILER_RT_DEFAULT_TARGET_TRIPLE) 429 message(FATAL_ERROR "COMPILER_RT_DEFAULT_TARGET_TRIPLE isn't supported when building for default target only") 430 endif() 431 set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${CMAKE_C_COMPILER_TARGET}) 432 else() 433 set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${LLVM_TARGET_TRIPLE} CACHE STRING 434 "Default triple for which compiler-rt runtimes will be built.") 435 endif() 436 437 string(REPLACE "-" ";" LLVM_TARGET_TRIPLE_LIST ${COMPILER_RT_DEFAULT_TARGET_TRIPLE}) 438 list(GET LLVM_TARGET_TRIPLE_LIST 0 COMPILER_RT_DEFAULT_TARGET_ARCH) 439 440 # Map various forms of the architecture names to the canonical forms 441 # (as they are used by clang, see getArchNameForCompilerRTLib). 442 if("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "^i.86$") 443 # Android uses i686, but that's remapped at a later stage. 444 set(COMPILER_RT_DEFAULT_TARGET_ARCH "i386") 445 endif() 446 447 # Determine if test target triple is specified explicitly, and doesn't match the 448 # default. 449 if(NOT COMPILER_RT_DEFAULT_TARGET_TRIPLE STREQUAL LLVM_TARGET_TRIPLE) 450 set(COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE TRUE) 451 else() 452 set(COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE FALSE) 453 endif() 454endmacro() 455 456# Filter out generic versions of routines that are re-implemented in an 457# architecture specific manner. This prevents multiple definitions of the same 458# symbols, making the symbol selection non-deterministic. 459# 460# We follow the convention that a source file that exists in a sub-directory 461# (e.g. `ppc/divtc3.c`) is architecture-specific and that if a generic 462# implementation exists it will be a top-level source file with the same name 463# modulo the file extension (e.g. `divtc3.c`). 464function(filter_builtin_sources inout_var name) 465 set(intermediate ${${inout_var}}) 466 foreach(_file ${intermediate}) 467 get_filename_component(_file_dir ${_file} DIRECTORY) 468 if (NOT "${_file_dir}" STREQUAL "") 469 # Architecture specific file. If a generic version exists, print a notice 470 # and ensure that it is removed from the file list. 471 get_filename_component(_name ${_file} NAME) 472 string(REGEX REPLACE "\\.S$" ".c" _cname "${_name}") 473 if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${_cname}") 474 message(STATUS "For ${name} builtins preferring ${_file} to ${_cname}") 475 list(REMOVE_ITEM intermediate ${_cname}) 476 endif() 477 endif() 478 endforeach() 479 set(${inout_var} ${intermediate} PARENT_SCOPE) 480endfunction() 481 482function(get_compiler_rt_target arch variable) 483 string(FIND ${COMPILER_RT_DEFAULT_TARGET_TRIPLE} "-" dash_index) 484 string(SUBSTRING ${COMPILER_RT_DEFAULT_TARGET_TRIPLE} ${dash_index} -1 triple_suffix) 485 if(COMPILER_RT_DEFAULT_TARGET_ONLY) 486 # Use exact spelling when building only for the target specified to CMake. 487 set(target "${COMPILER_RT_DEFAULT_TARGET_TRIPLE}") 488 elseif(ANDROID AND ${arch} STREQUAL "i386") 489 set(target "i686${triple_suffix}") 490 else() 491 set(target "${arch}${triple_suffix}") 492 endif() 493 set(${variable} ${target} PARENT_SCOPE) 494endfunction() 495 496function(get_compiler_rt_install_dir arch install_dir) 497 if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE) 498 get_compiler_rt_target(${arch} target) 499 set(${install_dir} ${COMPILER_RT_INSTALL_LIBRARY_DIR}/${target} PARENT_SCOPE) 500 else() 501 set(${install_dir} ${COMPILER_RT_INSTALL_LIBRARY_DIR} PARENT_SCOPE) 502 endif() 503endfunction() 504 505function(get_compiler_rt_output_dir arch output_dir) 506 if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE) 507 get_compiler_rt_target(${arch} target) 508 set(${output_dir} ${COMPILER_RT_OUTPUT_LIBRARY_DIR}/${target} PARENT_SCOPE) 509 else() 510 set(${output_dir} ${COMPILER_RT_OUTPUT_LIBRARY_DIR} PARENT_SCOPE) 511 endif() 512endfunction() 513 514# compiler_rt_process_sources( 515# <OUTPUT_VAR> 516# <SOURCE_FILE> ... 517# [ADDITIONAL_HEADERS <header> ...] 518# ) 519# 520# Process the provided sources and write the list of new sources 521# into `<OUTPUT_VAR>`. 522# 523# ADDITIONAL_HEADERS - Adds the supplied header to list of sources for IDEs. 524# 525# This function is very similar to `llvm_process_sources()` but exists here 526# because we need to support standalone builds of compiler-rt. 527function(compiler_rt_process_sources OUTPUT_VAR) 528 cmake_parse_arguments( 529 ARG 530 "" 531 "" 532 "ADDITIONAL_HEADERS" 533 ${ARGN} 534 ) 535 set(sources ${ARG_UNPARSED_ARGUMENTS}) 536 set(headers "") 537 if (XCODE OR MSVC_IDE OR CMAKE_EXTRA_GENERATOR) 538 # For IDEs we need to tell CMake about header files. 539 # Otherwise they won't show up in UI. 540 set(headers ${ARG_ADDITIONAL_HEADERS}) 541 list(LENGTH headers headers_length) 542 if (${headers_length} GREATER 0) 543 set_source_files_properties(${headers} 544 PROPERTIES HEADER_FILE_ONLY ON) 545 endif() 546 endif() 547 set("${OUTPUT_VAR}" ${sources} ${headers} PARENT_SCOPE) 548endfunction() 549 550# Create install targets for a library and its parent component (if specified). 551function(add_compiler_rt_install_targets name) 552 cmake_parse_arguments(ARG "" "PARENT_TARGET" "" ${ARGN}) 553 554 if(ARG_PARENT_TARGET AND NOT TARGET install-${ARG_PARENT_TARGET}) 555 # The parent install target specifies the parent component to scrape up 556 # anything not installed by the individual install targets, and to handle 557 # installation when running the multi-configuration generators. 558 add_custom_target(install-${ARG_PARENT_TARGET} 559 DEPENDS ${ARG_PARENT_TARGET} 560 COMMAND "${CMAKE_COMMAND}" 561 -DCMAKE_INSTALL_COMPONENT=${ARG_PARENT_TARGET} 562 -P "${CMAKE_BINARY_DIR}/cmake_install.cmake") 563 add_custom_target(install-${ARG_PARENT_TARGET}-stripped 564 DEPENDS ${ARG_PARENT_TARGET} 565 COMMAND "${CMAKE_COMMAND}" 566 -DCMAKE_INSTALL_COMPONENT=${ARG_PARENT_TARGET} 567 -DCMAKE_INSTALL_DO_STRIP=1 568 -P "${CMAKE_BINARY_DIR}/cmake_install.cmake") 569 set_target_properties(install-${ARG_PARENT_TARGET} PROPERTIES 570 FOLDER "Compiler-RT Misc") 571 set_target_properties(install-${ARG_PARENT_TARGET}-stripped PROPERTIES 572 FOLDER "Compiler-RT Misc") 573 add_dependencies(install-compiler-rt install-${ARG_PARENT_TARGET}) 574 add_dependencies(install-compiler-rt-stripped install-${ARG_PARENT_TARGET}-stripped) 575 endif() 576 577 # We only want to generate per-library install targets if you aren't using 578 # an IDE because the extra targets get cluttered in IDEs. 579 if(NOT CMAKE_CONFIGURATION_TYPES) 580 add_custom_target(install-${name} 581 DEPENDS ${name} 582 COMMAND "${CMAKE_COMMAND}" 583 -DCMAKE_INSTALL_COMPONENT=${name} 584 -P "${CMAKE_BINARY_DIR}/cmake_install.cmake") 585 add_custom_target(install-${name}-stripped 586 DEPENDS ${name} 587 COMMAND "${CMAKE_COMMAND}" 588 -DCMAKE_INSTALL_COMPONENT=${name} 589 -DCMAKE_INSTALL_DO_STRIP=1 590 -P "${CMAKE_BINARY_DIR}/cmake_install.cmake") 591 # If you have a parent target specified, we bind the new install target 592 # to the parent install target. 593 if(LIB_PARENT_TARGET) 594 add_dependencies(install-${LIB_PARENT_TARGET} install-${name}) 595 add_dependencies(install-${LIB_PARENT_TARGET}-stripped install-${name}-stripped) 596 endif() 597 endif() 598endfunction() 599