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 CompilerRT_SOURCE_DIR) 242 # Compiler-RT standalone build. 243 # `llvm-project/compiler-rt` 244 set(PATH_TO_COMPILER_RT_SOURCE_ROOT "${CompilerRT_SOURCE_DIR}") 245 elseif (EXISTS "${CMAKE_SOURCE_DIR}/../compiler-rt") 246 # In tree build with LLVM as the root project. 247 # See `llvm-project/projects/`. 248 # Assumes monorepo layout. 249 set(PATH_TO_COMPILER_RT_SOURCE_ROOT "${CMAKE_SOURCE_DIR}/../compiler-rt") 250 else() 251 message(FATAL_ERROR "Unhandled Compiler-RT source root configuration.") 252 endif() 253 254 get_filename_component(ROOT_DIR "${PATH_TO_COMPILER_RT_SOURCE_ROOT}" ABSOLUTE) 255 if (NOT EXISTS "${ROOT_DIR}") 256 message(FATAL_ERROR "Path \"${ROOT_DIR}\" doesn't exist") 257 endif() 258 259 # Sanity check: Make sure we can locate the current source file via the 260 # computed path. 261 set(PATH_TO_CURRENT_FILE "${ROOT_DIR}/cmake/Modules/CompilerRTUtils.cmake") 262 if (NOT EXISTS "${PATH_TO_CURRENT_FILE}") 263 message(FATAL_ERROR "Could not find \"${PATH_TO_CURRENT_FILE}\"") 264 endif() 265 266 set("${ROOT_DIR_VAR}" "${ROOT_DIR}" PARENT_SCOPE) 267endfunction() 268 269macro(load_llvm_config) 270 if (NOT LLVM_CONFIG_PATH) 271 find_program(LLVM_CONFIG_PATH "llvm-config" 272 DOC "Path to llvm-config binary") 273 if (NOT LLVM_CONFIG_PATH) 274 message(WARNING "UNSUPPORTED COMPILER-RT CONFIGURATION DETECTED: " 275 "llvm-config not found.\n" 276 "Reconfigure with -DLLVM_CONFIG_PATH=path/to/llvm-config.") 277 endif() 278 endif() 279 280 # Compute path to LLVM sources assuming the monorepo layout. 281 # We don't set `LLVM_MAIN_SRC_DIR` directly to avoid overriding a user provided 282 # CMake cache value. 283 get_compiler_rt_root_source_dir(COMPILER_RT_ROOT_SRC_PATH) 284 get_filename_component(LLVM_MAIN_SRC_DIR_DEFAULT "${COMPILER_RT_ROOT_SRC_PATH}/../llvm" ABSOLUTE) 285 if (NOT EXISTS "${LLVM_MAIN_SRC_DIR_DEFAULT}") 286 # TODO(dliew): Remove this legacy fallback path. 287 message(WARNING 288 "LLVM source tree not found at \"${LLVM_MAIN_SRC_DIR_DEFAULT}\". " 289 "You are not using the monorepo layout. This configuration is DEPRECATED.") 290 endif() 291 292 set(FOUND_LLVM_CMAKE_PATH FALSE) 293 if (LLVM_CONFIG_PATH) 294 execute_process( 295 COMMAND ${LLVM_CONFIG_PATH} "--obj-root" "--bindir" "--libdir" "--src-root" "--includedir" 296 RESULT_VARIABLE HAD_ERROR 297 OUTPUT_VARIABLE CONFIG_OUTPUT) 298 if (HAD_ERROR) 299 message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}") 300 endif() 301 string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" CONFIG_OUTPUT ${CONFIG_OUTPUT}) 302 list(GET CONFIG_OUTPUT 0 BINARY_DIR) 303 list(GET CONFIG_OUTPUT 1 TOOLS_BINARY_DIR) 304 list(GET CONFIG_OUTPUT 2 LIBRARY_DIR) 305 list(GET CONFIG_OUTPUT 3 MAIN_SRC_DIR) 306 list(GET CONFIG_OUTPUT 4 INCLUDE_DIR) 307 308 set(LLVM_BINARY_DIR ${BINARY_DIR} CACHE PATH "Path to LLVM build tree") 309 set(LLVM_LIBRARY_DIR ${LIBRARY_DIR} CACHE PATH "Path to llvm/lib") 310 set(LLVM_TOOLS_BINARY_DIR ${TOOLS_BINARY_DIR} CACHE PATH "Path to llvm/bin") 311 set(LLVM_INCLUDE_DIR ${INCLUDE_DIR} CACHE PATH "Paths to LLVM headers") 312 313 if (NOT EXISTS "${LLVM_MAIN_SRC_DIR_DEFAULT}") 314 # TODO(dliew): Remove this legacy fallback path. 315 message(WARNING 316 "Consulting llvm-config for the LLVM source path " 317 "as a fallback. This behavior will be removed in the future.") 318 # We don't set `LLVM_MAIN_SRC_DIR` directly to avoid overriding a user 319 # provided CMake cache value. 320 set(LLVM_MAIN_SRC_DIR_DEFAULT "${MAIN_SRC_DIR}") 321 message(STATUS "Using LLVM source path (${LLVM_MAIN_SRC_DIR_DEFAULT}) from llvm-config") 322 endif() 323 324 # Detect if we have the LLVMXRay and TestingSupport library installed and 325 # available from llvm-config. 326 execute_process( 327 COMMAND ${LLVM_CONFIG_PATH} "--ldflags" "--libs" "xray" 328 RESULT_VARIABLE HAD_ERROR 329 OUTPUT_VARIABLE CONFIG_OUTPUT 330 ERROR_QUIET) 331 if (HAD_ERROR) 332 message(WARNING "llvm-config finding xray failed with status ${HAD_ERROR}") 333 set(COMPILER_RT_HAS_LLVMXRAY FALSE) 334 else() 335 string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" CONFIG_OUTPUT ${CONFIG_OUTPUT}) 336 list(GET CONFIG_OUTPUT 0 LDFLAGS) 337 list(GET CONFIG_OUTPUT 1 LIBLIST) 338 file(TO_CMAKE_PATH "${LDFLAGS}" LDFLAGS) 339 file(TO_CMAKE_PATH "${LIBLIST}" LIBLIST) 340 set(LLVM_XRAY_LDFLAGS ${LDFLAGS} CACHE STRING "Linker flags for LLVMXRay library") 341 set(LLVM_XRAY_LIBLIST ${LIBLIST} CACHE STRING "Library list for LLVMXRay") 342 set(COMPILER_RT_HAS_LLVMXRAY TRUE) 343 endif() 344 345 set(COMPILER_RT_HAS_LLVMTESTINGSUPPORT FALSE) 346 execute_process( 347 COMMAND ${LLVM_CONFIG_PATH} "--ldflags" "--libs" "testingsupport" 348 RESULT_VARIABLE HAD_ERROR 349 OUTPUT_VARIABLE CONFIG_OUTPUT 350 ERROR_QUIET) 351 if (HAD_ERROR) 352 message(WARNING "llvm-config finding testingsupport failed with status ${HAD_ERROR}") 353 elseif(COMPILER_RT_INCLUDE_TESTS) 354 string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" CONFIG_OUTPUT ${CONFIG_OUTPUT}) 355 list(GET CONFIG_OUTPUT 0 LDFLAGS) 356 list(GET CONFIG_OUTPUT 1 LIBLIST) 357 if (LIBLIST STREQUAL "") 358 message(WARNING "testingsupport library not installed, some tests will be skipped") 359 else() 360 file(TO_CMAKE_PATH "${LDFLAGS}" LDFLAGS) 361 file(TO_CMAKE_PATH "${LIBLIST}" LIBLIST) 362 set(LLVM_TESTINGSUPPORT_LDFLAGS ${LDFLAGS} CACHE STRING "Linker flags for LLVMTestingSupport library") 363 set(LLVM_TESTINGSUPPORT_LIBLIST ${LIBLIST} CACHE STRING "Library list for LLVMTestingSupport") 364 set(COMPILER_RT_HAS_LLVMTESTINGSUPPORT TRUE) 365 endif() 366 endif() 367 368 # Make use of LLVM CMake modules. 369 # --cmakedir is supported since llvm r291218 (4.0 release) 370 execute_process( 371 COMMAND ${LLVM_CONFIG_PATH} --cmakedir 372 RESULT_VARIABLE HAD_ERROR 373 OUTPUT_VARIABLE CONFIG_OUTPUT) 374 if(NOT HAD_ERROR) 375 string(STRIP "${CONFIG_OUTPUT}" LLVM_CMAKE_PATH_FROM_LLVM_CONFIG) 376 file(TO_CMAKE_PATH ${LLVM_CMAKE_PATH_FROM_LLVM_CONFIG} LLVM_CMAKE_PATH) 377 else() 378 file(TO_CMAKE_PATH ${LLVM_BINARY_DIR} LLVM_BINARY_DIR_CMAKE_STYLE) 379 set(LLVM_CMAKE_PATH "${LLVM_BINARY_DIR_CMAKE_STYLE}/lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm") 380 endif() 381 382 set(LLVM_CMAKE_INCLUDE_FILE "${LLVM_CMAKE_PATH}/LLVMConfig.cmake") 383 if (EXISTS "${LLVM_CMAKE_INCLUDE_FILE}") 384 list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}") 385 # Get some LLVM variables from LLVMConfig. 386 include("${LLVM_CMAKE_INCLUDE_FILE}") 387 set(FOUND_LLVM_CMAKE_PATH TRUE) 388 else() 389 set(FOUND_LLVM_CMAKE_PATH FALSE) 390 message(WARNING "LLVM CMake path (${LLVM_CMAKE_INCLUDE_FILE}) reported by llvm-config does not exist") 391 endif() 392 unset(LLVM_CMAKE_INCLUDE_FILE) 393 394 set(LLVM_LIBRARY_OUTPUT_INTDIR 395 ${LLVM_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX}) 396 endif() 397 398 # Finally set the cache variable now that `llvm-config` has also had a chance 399 # to set `LLVM_MAIN_SRC_DIR_DEFAULT`. 400 set(LLVM_MAIN_SRC_DIR "${LLVM_MAIN_SRC_DIR_DEFAULT}" CACHE PATH "Path to LLVM source tree") 401 message(STATUS "LLVM_MAIN_SRC_DIR: \"${LLVM_MAIN_SRC_DIR}\"") 402 if (NOT EXISTS "${LLVM_MAIN_SRC_DIR}") 403 # TODO(dliew): Make this a hard error 404 message(WARNING "LLVM_MAIN_SRC_DIR (${LLVM_MAIN_SRC_DIR}) does not exist. " 405 "You can override the inferred path by adding " 406 "`-DLLVM_MAIN_SRC_DIR=<path_to_llvm_src>` to your CMake invocation " 407 "where `<path_to_llvm_src>` is the path to the `llvm` directory in " 408 "the `llvm-project` repo. " 409 "This will be treated as error in the future.") 410 endif() 411 412 if (NOT FOUND_LLVM_CMAKE_PATH) 413 # This configuration tries to configure without the prescence of `LLVMConfig.cmake`. It is 414 # intended for testing purposes (generating the lit test suites) and will likely not support 415 # a build of the runtimes in compiler-rt. 416 include(CompilerRTMockLLVMCMakeConfig) 417 compiler_rt_mock_llvm_cmake_config() 418 endif() 419 420endmacro() 421 422macro(construct_compiler_rt_default_triple) 423 if(COMPILER_RT_DEFAULT_TARGET_ONLY) 424 if(DEFINED COMPILER_RT_DEFAULT_TARGET_TRIPLE) 425 message(FATAL_ERROR "COMPILER_RT_DEFAULT_TARGET_TRIPLE isn't supported when building for default target only") 426 endif() 427 set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${CMAKE_C_COMPILER_TARGET}) 428 else() 429 set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${TARGET_TRIPLE} CACHE STRING 430 "Default triple for which compiler-rt runtimes will be built.") 431 endif() 432 433 if(DEFINED COMPILER_RT_TEST_TARGET_TRIPLE) 434 # Backwards compatibility: this variable used to be called 435 # COMPILER_RT_TEST_TARGET_TRIPLE. 436 set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${COMPILER_RT_TEST_TARGET_TRIPLE}) 437 endif() 438 439 string(REPLACE "-" ";" TARGET_TRIPLE_LIST ${COMPILER_RT_DEFAULT_TARGET_TRIPLE}) 440 list(GET TARGET_TRIPLE_LIST 0 COMPILER_RT_DEFAULT_TARGET_ARCH) 441 442 # Map various forms of the architecture names to the canonical forms 443 # (as they are used by clang, see getArchNameForCompilerRTLib). 444 if("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "^i.86$") 445 # Android uses i686, but that's remapped at a later stage. 446 set(COMPILER_RT_DEFAULT_TARGET_ARCH "i386") 447 endif() 448 449 # Determine if test target triple is specified explicitly, and doesn't match the 450 # default. 451 if(NOT COMPILER_RT_DEFAULT_TARGET_TRIPLE STREQUAL TARGET_TRIPLE) 452 set(COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE TRUE) 453 else() 454 set(COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE FALSE) 455 endif() 456endmacro() 457 458# Filter out generic versions of routines that are re-implemented in an 459# architecture specific manner. This prevents multiple definitions of the same 460# symbols, making the symbol selection non-deterministic. 461# 462# We follow the convention that a source file that exists in a sub-directory 463# (e.g. `ppc/divtc3.c`) is architecture-specific and that if a generic 464# implementation exists it will be a top-level source file with the same name 465# modulo the file extension (e.g. `divtc3.c`). 466function(filter_builtin_sources inout_var name) 467 set(intermediate ${${inout_var}}) 468 foreach(_file ${intermediate}) 469 get_filename_component(_file_dir ${_file} DIRECTORY) 470 if (NOT "${_file_dir}" STREQUAL "") 471 # Architecture specific file. If a generic version exists, print a notice 472 # and ensure that it is removed from the file list. 473 get_filename_component(_name ${_file} NAME) 474 string(REGEX REPLACE "\\.S$" ".c" _cname "${_name}") 475 if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${_cname}") 476 message(STATUS "For ${name} builtins preferring ${_file} to ${_cname}") 477 list(REMOVE_ITEM intermediate ${_cname}) 478 endif() 479 endif() 480 endforeach() 481 set(${inout_var} ${intermediate} PARENT_SCOPE) 482endfunction() 483 484function(get_compiler_rt_target arch variable) 485 string(FIND ${COMPILER_RT_DEFAULT_TARGET_TRIPLE} "-" dash_index) 486 string(SUBSTRING ${COMPILER_RT_DEFAULT_TARGET_TRIPLE} ${dash_index} -1 triple_suffix) 487 if(COMPILER_RT_DEFAULT_TARGET_ONLY) 488 # Use exact spelling when building only for the target specified to CMake. 489 set(target "${COMPILER_RT_DEFAULT_TARGET_TRIPLE}") 490 elseif(ANDROID AND ${arch} STREQUAL "i386") 491 set(target "i686${triple_suffix}") 492 else() 493 set(target "${arch}${triple_suffix}") 494 endif() 495 set(${variable} ${target} PARENT_SCOPE) 496endfunction() 497 498function(get_compiler_rt_install_dir arch install_dir) 499 if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE) 500 get_compiler_rt_target(${arch} target) 501 set(${install_dir} ${COMPILER_RT_INSTALL_LIBRARY_DIR}/${target} PARENT_SCOPE) 502 else() 503 set(${install_dir} ${COMPILER_RT_INSTALL_LIBRARY_DIR} PARENT_SCOPE) 504 endif() 505endfunction() 506 507function(get_compiler_rt_output_dir arch output_dir) 508 if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE) 509 get_compiler_rt_target(${arch} target) 510 set(${output_dir} ${COMPILER_RT_OUTPUT_LIBRARY_DIR}/${target} PARENT_SCOPE) 511 else() 512 set(${output_dir} ${COMPILER_RT_OUTPUT_LIBRARY_DIR} PARENT_SCOPE) 513 endif() 514endfunction() 515 516# compiler_rt_process_sources( 517# <OUTPUT_VAR> 518# <SOURCE_FILE> ... 519# [ADDITIONAL_HEADERS <header> ...] 520# ) 521# 522# Process the provided sources and write the list of new sources 523# into `<OUTPUT_VAR>`. 524# 525# ADDITIONAL_HEADERS - Adds the supplied header to list of sources for IDEs. 526# 527# This function is very similar to `llvm_process_sources()` but exists here 528# because we need to support standalone builds of compiler-rt. 529function(compiler_rt_process_sources OUTPUT_VAR) 530 cmake_parse_arguments( 531 ARG 532 "" 533 "" 534 "ADDITIONAL_HEADERS" 535 ${ARGN} 536 ) 537 set(sources ${ARG_UNPARSED_ARGUMENTS}) 538 set(headers "") 539 if (XCODE OR MSVC_IDE OR CMAKE_EXTRA_GENERATOR) 540 # For IDEs we need to tell CMake about header files. 541 # Otherwise they won't show up in UI. 542 set(headers ${ARG_ADDITIONAL_HEADERS}) 543 list(LENGTH headers headers_length) 544 if (${headers_length} GREATER 0) 545 set_source_files_properties(${headers} 546 PROPERTIES HEADER_FILE_ONLY ON) 547 endif() 548 endif() 549 set("${OUTPUT_VAR}" ${sources} ${headers} PARENT_SCOPE) 550endfunction() 551 552# Create install targets for a library and its parent component (if specified). 553function(add_compiler_rt_install_targets name) 554 cmake_parse_arguments(ARG "" "PARENT_TARGET" "" ${ARGN}) 555 556 if(ARG_PARENT_TARGET AND NOT TARGET install-${ARG_PARENT_TARGET}) 557 # The parent install target specifies the parent component to scrape up 558 # anything not installed by the individual install targets, and to handle 559 # installation when running the multi-configuration generators. 560 add_custom_target(install-${ARG_PARENT_TARGET} 561 DEPENDS ${ARG_PARENT_TARGET} 562 COMMAND "${CMAKE_COMMAND}" 563 -DCMAKE_INSTALL_COMPONENT=${ARG_PARENT_TARGET} 564 -P "${CMAKE_BINARY_DIR}/cmake_install.cmake") 565 add_custom_target(install-${ARG_PARENT_TARGET}-stripped 566 DEPENDS ${ARG_PARENT_TARGET} 567 COMMAND "${CMAKE_COMMAND}" 568 -DCMAKE_INSTALL_COMPONENT=${ARG_PARENT_TARGET} 569 -DCMAKE_INSTALL_DO_STRIP=1 570 -P "${CMAKE_BINARY_DIR}/cmake_install.cmake") 571 set_target_properties(install-${ARG_PARENT_TARGET} PROPERTIES 572 FOLDER "Compiler-RT Misc") 573 set_target_properties(install-${ARG_PARENT_TARGET}-stripped PROPERTIES 574 FOLDER "Compiler-RT Misc") 575 add_dependencies(install-compiler-rt install-${ARG_PARENT_TARGET}) 576 add_dependencies(install-compiler-rt-stripped install-${ARG_PARENT_TARGET}-stripped) 577 endif() 578 579 # We only want to generate per-library install targets if you aren't using 580 # an IDE because the extra targets get cluttered in IDEs. 581 if(NOT CMAKE_CONFIGURATION_TYPES) 582 add_custom_target(install-${name} 583 DEPENDS ${name} 584 COMMAND "${CMAKE_COMMAND}" 585 -DCMAKE_INSTALL_COMPONENT=${name} 586 -P "${CMAKE_BINARY_DIR}/cmake_install.cmake") 587 add_custom_target(install-${name}-stripped 588 DEPENDS ${name} 589 COMMAND "${CMAKE_COMMAND}" 590 -DCMAKE_INSTALL_COMPONENT=${name} 591 -DCMAKE_INSTALL_DO_STRIP=1 592 -P "${CMAKE_BINARY_DIR}/cmake_install.cmake") 593 # If you have a parent target specified, we bind the new install target 594 # to the parent install target. 595 if(LIB_PARENT_TARGET) 596 add_dependencies(install-${LIB_PARENT_TARGET} install-${name}) 597 add_dependencies(install-${LIB_PARENT_TARGET}-stripped install-${name}-stripped) 598 endif() 599 endif() 600endfunction() 601