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_property(TARGET ${target} PROPERTY COMPILE_OPTIONS ${ARGN}) 9endfunction() 10 11function(set_target_link_flags target) 12 set_property(TARGET ${target} PROPERTY LINK_OPTIONS ${ARGN}) 13endfunction() 14 15# Set the variable var_PYBOOL to True if var holds a true-ish string, 16# otherwise set it to False. 17macro(pythonize_bool var) 18 if (${var}) 19 set(${var}_PYBOOL True) 20 else() 21 set(${var}_PYBOOL False) 22 endif() 23endmacro() 24 25# Appends value to all lists in ARGN, if the condition is true. 26macro(append_list_if condition value) 27 if(${condition}) 28 foreach(list ${ARGN}) 29 list(APPEND ${list} ${value}) 30 endforeach() 31 endif() 32endmacro() 33 34# Appends value to all strings in ARGN, if the condition is true. 35macro(append_string_if condition value) 36 if(${condition}) 37 foreach(str ${ARGN}) 38 set(${str} "${${str}} ${value}") 39 endforeach() 40 endif() 41endmacro() 42 43macro(append_rtti_flag polarity list) 44 if(${polarity}) 45 append_list_if(COMPILER_RT_HAS_FRTTI_FLAG -frtti ${list}) 46 append_list_if(COMPILER_RT_HAS_GR_FLAG /GR ${list}) 47 else() 48 append_list_if(COMPILER_RT_HAS_FNO_RTTI_FLAG -fno-rtti ${list}) 49 append_list_if(COMPILER_RT_HAS_GR_FLAG /GR- ${list}) 50 endif() 51endmacro() 52 53macro(list_intersect output input1 input2) 54 set(${output}) 55 foreach(it ${${input1}}) 56 list(FIND ${input2} ${it} index) 57 if( NOT (index EQUAL -1)) 58 list(APPEND ${output} ${it}) 59 endif() 60 endforeach() 61endmacro() 62 63function(list_replace input_list old new) 64 set(replaced_list) 65 foreach(item ${${input_list}}) 66 if(${item} STREQUAL ${old}) 67 list(APPEND replaced_list ${new}) 68 else() 69 list(APPEND replaced_list ${item}) 70 endif() 71 endforeach() 72 set(${input_list} "${replaced_list}" PARENT_SCOPE) 73endfunction() 74 75# Takes ${ARGN} and puts only supported architectures in @out_var list. 76function(filter_available_targets out_var) 77 set(archs ${${out_var}}) 78 foreach(arch ${ARGN}) 79 list(FIND COMPILER_RT_SUPPORTED_ARCH ${arch} ARCH_INDEX) 80 if(NOT (ARCH_INDEX EQUAL -1) AND CAN_TARGET_${arch}) 81 list(APPEND archs ${arch}) 82 endif() 83 endforeach() 84 set(${out_var} ${archs} PARENT_SCOPE) 85endfunction() 86 87# Add $arch as supported with no additional flags. 88macro(add_default_target_arch arch) 89 set(TARGET_${arch}_CFLAGS "") 90 set(CAN_TARGET_${arch} 1) 91 list(APPEND COMPILER_RT_SUPPORTED_ARCH ${arch}) 92endmacro() 93 94function(check_compile_definition def argstring out_var) 95 if("${def}" STREQUAL "") 96 set(${out_var} TRUE PARENT_SCOPE) 97 return() 98 endif() 99 cmake_push_check_state() 100 set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${argstring}") 101 check_symbol_exists(${def} "" ${out_var}) 102 cmake_pop_check_state() 103endfunction() 104 105# test_target_arch(<arch> <def> <target flags...>) 106# Checks if architecture is supported: runs host compiler with provided 107# flags to verify that: 108# 1) <def> is defined (if non-empty) 109# 2) simple file can be successfully built. 110# If successful, saves target flags for this architecture. 111macro(test_target_arch arch def) 112 set(TARGET_${arch}_CFLAGS ${ARGN}) 113 set(TARGET_${arch}_LINK_FLAGS ${ARGN}) 114 set(argstring "") 115 foreach(arg ${ARGN}) 116 set(argstring "${argstring} ${arg}") 117 endforeach() 118 check_compile_definition("${def}" "${argstring}" HAS_${arch}_DEF) 119 if(NOT DEFINED CAN_TARGET_${arch}) 120 if(NOT HAS_${arch}_DEF) 121 set(CAN_TARGET_${arch} FALSE) 122 elseif(TEST_COMPILE_ONLY) 123 try_compile_only(CAN_TARGET_${arch} 124 SOURCE "#include <limits.h>\nint foo(int x, int y) { return x + y; }\n" 125 FLAGS ${TARGET_${arch}_CFLAGS}) 126 else() 127 set(FLAG_NO_EXCEPTIONS "") 128 if(COMPILER_RT_HAS_FNO_EXCEPTIONS_FLAG) 129 set(FLAG_NO_EXCEPTIONS " -fno-exceptions ") 130 endif() 131 set(SAVED_CMAKE_EXE_LINKER_FLAGS ${CMAKE_EXE_LINKER_FLAGS}) 132 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${argstring}") 133 try_compile(CAN_TARGET_${arch} ${CMAKE_BINARY_DIR} ${SIMPLE_SOURCE} 134 COMPILE_DEFINITIONS "${TARGET_${arch}_CFLAGS} ${FLAG_NO_EXCEPTIONS}" 135 OUTPUT_VARIABLE TARGET_${arch}_OUTPUT) 136 set(CMAKE_EXE_LINKER_FLAGS ${SAVED_CMAKE_EXE_LINKER_FLAGS}) 137 endif() 138 endif() 139 if(${CAN_TARGET_${arch}}) 140 list(APPEND COMPILER_RT_SUPPORTED_ARCH ${arch}) 141 elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" STREQUAL "${arch}" AND 142 COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE) 143 # Bail out if we cannot target the architecture we plan to test. 144 message(FATAL_ERROR "Cannot compile for ${arch}:\n${TARGET_${arch}_OUTPUT}") 145 endif() 146endmacro() 147 148macro(detect_target_arch) 149 check_symbol_exists(__arm__ "" __ARM) 150 check_symbol_exists(__AVR__ "" __AVR) 151 check_symbol_exists(__aarch64__ "" __AARCH64) 152 check_symbol_exists(__x86_64__ "" __X86_64) 153 check_symbol_exists(__i386__ "" __I386) 154 check_symbol_exists(__loongarch__ "" __LOONGARCH) 155 check_symbol_exists(__mips__ "" __MIPS) 156 check_symbol_exists(__mips64__ "" __MIPS64) 157 check_symbol_exists(__powerpc__ "" __PPC) 158 check_symbol_exists(__powerpc64__ "" __PPC64) 159 check_symbol_exists(__powerpc64le__ "" __PPC64LE) 160 check_symbol_exists(__riscv "" __RISCV) 161 check_symbol_exists(__s390x__ "" __S390X) 162 check_symbol_exists(__sparc "" __SPARC) 163 check_symbol_exists(__sparcv9 "" __SPARCV9) 164 check_symbol_exists(__wasm32__ "" __WEBASSEMBLY32) 165 check_symbol_exists(__wasm64__ "" __WEBASSEMBLY64) 166 check_symbol_exists(__ve__ "" __VE) 167 if(__ARM) 168 add_default_target_arch(arm) 169 elseif(__AVR) 170 add_default_target_arch(avr) 171 elseif(__AARCH64) 172 add_default_target_arch(aarch64) 173 elseif(__X86_64) 174 if(CMAKE_SIZEOF_VOID_P EQUAL "4") 175 add_default_target_arch(x32) 176 elseif(CMAKE_SIZEOF_VOID_P EQUAL "8") 177 add_default_target_arch(x86_64) 178 else() 179 message(FATAL_ERROR "Unsupported pointer size for X86_64") 180 endif() 181 elseif(__I386) 182 add_default_target_arch(i386) 183 elseif(__LOONGARCH) 184 if(CMAKE_SIZEOF_VOID_P EQUAL "4") 185 add_default_target_arch(loongarch32) 186 elseif(CMAKE_SIZEOF_VOID_P EQUAL "8") 187 add_default_target_arch(loongarch64) 188 else() 189 message(FATAL_ERROR "Unsupported pointer size for LoongArch") 190 endif() 191 elseif(__MIPS64) # must be checked before __MIPS 192 add_default_target_arch(mips64) 193 elseif(__MIPS) 194 add_default_target_arch(mips) 195 elseif(__PPC64) # must be checked before __PPC 196 add_default_target_arch(powerpc64) 197 elseif(__PPC64LE) 198 add_default_target_arch(powerpc64le) 199 elseif(__PPC) 200 add_default_target_arch(powerpc) 201 elseif(__RISCV) 202 if(CMAKE_SIZEOF_VOID_P EQUAL "4") 203 add_default_target_arch(riscv32) 204 elseif(CMAKE_SIZEOF_VOID_P EQUAL "8") 205 add_default_target_arch(riscv64) 206 else() 207 message(FATAL_ERROR "Unsupport XLEN for RISC-V") 208 endif() 209 elseif(__S390X) 210 add_default_target_arch(s390x) 211 elseif(__SPARCV9) 212 add_default_target_arch(sparcv9) 213 elseif(__SPARC) 214 add_default_target_arch(sparc) 215 elseif(__WEBASSEMBLY32) 216 add_default_target_arch(wasm32) 217 elseif(__WEBASSEMBLY64) 218 add_default_target_arch(wasm64) 219 elseif(__VE) 220 add_default_target_arch(ve) 221 endif() 222endmacro() 223 224function(get_compiler_rt_root_source_dir ROOT_DIR_VAR) 225 # Compute the path to the root of the Compiler-RT source tree 226 # regardless of how the project was configured. 227 # 228 # This function is useful because using `${CMAKE_SOURCE_DIR}` 229 # is error prone due to the numerous ways Compiler-RT can be 230 # configured. 231 # 232 # `ROOT_DIR_VAR` - the name of the variable to write the result to. 233 # 234 # TODO(dliew): When CMake min version is 3.17 or newer use 235 # `CMAKE_CURRENT_FUNCTION_LIST_DIR` instead. 236 if ("${ROOT_DIR_VAR}" STREQUAL "") 237 message(FATAL_ERROR "ROOT_DIR_VAR cannot be empty") 238 endif() 239 240 # Compiler-rt supports different source root paths. 241 # Handle each case here. 242 set(PATH_TO_COMPILER_RT_SOURCE_ROOT "") 243 if (DEFINED CompilerRTBuiltins_SOURCE_DIR) 244 # Compiler-RT Builtins standalone build. 245 # `llvm-project/compiler-rt/lib/builtins` 246 set(PATH_TO_COMPILER_RT_SOURCE_ROOT "${CompilerRTBuiltins_SOURCE_DIR}/../../") 247 elseif (DEFINED CompilerRTCRT_SOURCE_DIR) 248 # Compiler-RT CRT standalone build. 249 # `llvm-project/compiler-rt/lib/crt` 250 set(PATH_TO_COMPILER_RT_SOURCE_ROOT "${CompilerRTCRT_SOURCE_DIR}/../../") 251 elseif(DEFINED CompilerRT_SOURCE_DIR) 252 # Compiler-RT standalone build. 253 # `llvm-project/compiler-rt` 254 set(PATH_TO_COMPILER_RT_SOURCE_ROOT "${CompilerRT_SOURCE_DIR}") 255 elseif (EXISTS "${CMAKE_SOURCE_DIR}/../compiler-rt") 256 # In tree build with LLVM as the root project. 257 # See `llvm-project/projects/`. 258 # Assumes monorepo layout. 259 set(PATH_TO_COMPILER_RT_SOURCE_ROOT "${CMAKE_SOURCE_DIR}/../compiler-rt") 260 else() 261 message(FATAL_ERROR "Unhandled Compiler-RT source root configuration.") 262 endif() 263 264 get_filename_component(ROOT_DIR "${PATH_TO_COMPILER_RT_SOURCE_ROOT}" ABSOLUTE) 265 if (NOT EXISTS "${ROOT_DIR}") 266 message(FATAL_ERROR "Path \"${ROOT_DIR}\" doesn't exist") 267 endif() 268 269 # Sanity check: Make sure we can locate the current source file via the 270 # computed path. 271 set(PATH_TO_CURRENT_FILE "${ROOT_DIR}/cmake/Modules/CompilerRTUtils.cmake") 272 if (NOT EXISTS "${PATH_TO_CURRENT_FILE}") 273 message(FATAL_ERROR "Could not find \"${PATH_TO_CURRENT_FILE}\"") 274 endif() 275 276 set("${ROOT_DIR_VAR}" "${ROOT_DIR}" PARENT_SCOPE) 277endfunction() 278 279macro(load_llvm_config) 280 if (LLVM_CONFIG_PATH AND NOT LLVM_CMAKE_DIR) 281 message(WARNING 282 "LLVM_CONFIG_PATH is deprecated, please use LLVM_CMAKE_DIR instead") 283 # Compute the path to the LLVM install prefix and pass it as LLVM_CMAKE_DIR, 284 # CMake will locate the appropriate lib*/cmake subdirectory from there. 285 # For example. for -DLLVM_CONFIG_PATH=/usr/lib/llvm/16/bin/llvm-config 286 # this will yield LLVM_CMAKE_DIR=/usr/lib/llvm/16. 287 get_filename_component(LLVM_CMAKE_DIR "${LLVM_CONFIG_PATH}" DIRECTORY) 288 get_filename_component(LLVM_CMAKE_DIR "${LLVM_CMAKE_DIR}" DIRECTORY) 289 endif() 290 291 # Compute path to LLVM sources assuming the monorepo layout. 292 # We don't set `LLVM_MAIN_SRC_DIR` directly to avoid overriding a user provided 293 # CMake cache value. 294 get_compiler_rt_root_source_dir(COMPILER_RT_ROOT_SRC_PATH) 295 get_filename_component(LLVM_MAIN_SRC_DIR_DEFAULT "${COMPILER_RT_ROOT_SRC_PATH}/../llvm" ABSOLUTE) 296 if (NOT EXISTS "${LLVM_MAIN_SRC_DIR_DEFAULT}") 297 # TODO(dliew): Remove this legacy fallback path. 298 message(WARNING 299 "LLVM source tree not found at \"${LLVM_MAIN_SRC_DIR_DEFAULT}\". " 300 "You are not using the monorepo layout. This configuration is DEPRECATED.") 301 endif() 302 303 find_package(LLVM HINTS "${LLVM_CMAKE_DIR}") 304 if (NOT LLVM_FOUND) 305 message(WARNING "UNSUPPORTED COMPILER-RT CONFIGURATION DETECTED: " 306 "LLVM cmake package not found.\n" 307 "Reconfigure with -DLLVM_CMAKE_DIR=/path/to/llvm.") 308 else() 309 list(APPEND CMAKE_MODULE_PATH "${LLVM_DIR}") 310 # Turn into CACHE PATHs for overwritting 311 set(LLVM_BINARY_DIR "${LLVM_BINARY_DIR}" CACHE PATH "Path to LLVM build tree") 312 set(LLVM_LIBRARY_DIR "${LLVM_LIBRARY_DIR}" CACHE PATH "Path to llvm/lib") 313 set(LLVM_TOOLS_BINARY_DIR "${LLVM_TOOLS_BINARY_DIR}" CACHE PATH "Path to llvm/bin") 314 set(LLVM_INCLUDE_DIR ${LLVM_INCLUDE_DIRS} CACHE PATH "Path to llvm/include and any other header dirs needed") 315 316 list(FIND LLVM_AVAILABLE_LIBS LLVMXRay XRAY_INDEX) 317 set(COMPILER_RT_HAS_LLVMXRAY TRUE) 318 if (XRAY_INDEX EQUAL -1) 319 message(WARNING "LLVMXRay not found in LLVM_AVAILABLE_LIBS") 320 set(COMPILER_RT_HAS_LLVMXRAY FALSE) 321 endif() 322 323 list(FIND LLVM_AVAILABLE_LIBS LLVMTestingSupport TESTINGSUPPORT_INDEX) 324 set(COMPILER_RT_HAS_LLVMTESTINGSUPPORT TRUE) 325 if (TESTINGSUPPORT_INDEX EQUAL -1) 326 message(WARNING "LLVMTestingSupport not found in LLVM_AVAILABLE_LIBS") 327 set(COMPILER_RT_HAS_LLVMTESTINGSUPPORT FALSE) 328 endif() 329 endif() 330 331 set(LLVM_LIBRARY_OUTPUT_INTDIR 332 ${LLVM_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX}) 333 334 set(LLVM_MAIN_SRC_DIR "${LLVM_MAIN_SRC_DIR_DEFAULT}" CACHE PATH "Path to LLVM source tree") 335 message(STATUS "LLVM_MAIN_SRC_DIR: \"${LLVM_MAIN_SRC_DIR}\"") 336 if (NOT EXISTS "${LLVM_MAIN_SRC_DIR}") 337 # TODO(dliew): Make this a hard error 338 message(WARNING "LLVM_MAIN_SRC_DIR (${LLVM_MAIN_SRC_DIR}) does not exist. " 339 "You can override the inferred path by adding " 340 "`-DLLVM_MAIN_SRC_DIR=<path_to_llvm_src>` to your CMake invocation " 341 "where `<path_to_llvm_src>` is the path to the `llvm` directory in " 342 "the `llvm-project` repo. " 343 "This will be treated as error in the future.") 344 endif() 345 346 if (NOT LLVM_FOUND) 347 # This configuration tries to configure without the prescence of `LLVMConfig.cmake`. It is 348 # intended for testing purposes (generating the lit test suites) and will likely not support 349 # a build of the runtimes in compiler-rt. 350 include(CompilerRTMockLLVMCMakeConfig) 351 compiler_rt_mock_llvm_cmake_config() 352 endif() 353 354endmacro() 355 356macro(construct_compiler_rt_default_triple) 357 if(COMPILER_RT_DEFAULT_TARGET_ONLY) 358 if(DEFINED COMPILER_RT_DEFAULT_TARGET_TRIPLE) 359 message(FATAL_ERROR "COMPILER_RT_DEFAULT_TARGET_TRIPLE isn't supported when building for default target only") 360 endif() 361 set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${CMAKE_C_COMPILER_TARGET}) 362 else() 363 set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${LLVM_TARGET_TRIPLE} CACHE STRING 364 "Default triple for which compiler-rt runtimes will be built.") 365 endif() 366 367 string(REPLACE "-" ";" LLVM_TARGET_TRIPLE_LIST ${COMPILER_RT_DEFAULT_TARGET_TRIPLE}) 368 list(GET LLVM_TARGET_TRIPLE_LIST 0 COMPILER_RT_DEFAULT_TARGET_ARCH) 369 370 # Map various forms of the architecture names to the canonical forms 371 # (as they are used by clang, see getArchNameForCompilerRTLib). 372 if("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "^i.86$") 373 # Android uses i686, but that's remapped at a later stage. 374 set(COMPILER_RT_DEFAULT_TARGET_ARCH "i386") 375 endif() 376 377 # Determine if test target triple is specified explicitly, and doesn't match the 378 # default. 379 if(NOT COMPILER_RT_DEFAULT_TARGET_TRIPLE STREQUAL LLVM_TARGET_TRIPLE) 380 set(COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE TRUE) 381 else() 382 set(COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE FALSE) 383 endif() 384endmacro() 385 386# Filter out generic versions of routines that are re-implemented in an 387# architecture specific manner. This prevents multiple definitions of the same 388# symbols, making the symbol selection non-deterministic. 389# 390# We follow the convention that a source file that exists in a sub-directory 391# (e.g. `ppc/divtc3.c`) is architecture-specific and that if a generic 392# implementation exists it will be a top-level source file with the same name 393# modulo the file extension (e.g. `divtc3.c`). 394function(filter_builtin_sources inout_var name) 395 set(intermediate ${${inout_var}}) 396 foreach(_file ${intermediate}) 397 get_filename_component(_file_dir ${_file} DIRECTORY) 398 if (NOT "${_file_dir}" STREQUAL "") 399 # Architecture specific file. If a generic version exists, print a notice 400 # and ensure that it is removed from the file list. 401 get_filename_component(_name ${_file} NAME) 402 string(REGEX REPLACE "\\.S$" ".c" _cname "${_name}") 403 if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${_cname}") 404 message(STATUS "For ${name} builtins preferring ${_file} to ${_cname}") 405 list(REMOVE_ITEM intermediate ${_cname}) 406 endif() 407 endif() 408 endforeach() 409 set(${inout_var} ${intermediate} PARENT_SCOPE) 410endfunction() 411 412function(get_compiler_rt_target arch variable) 413 string(FIND ${COMPILER_RT_DEFAULT_TARGET_TRIPLE} "-" dash_index) 414 string(SUBSTRING ${COMPILER_RT_DEFAULT_TARGET_TRIPLE} ${dash_index} -1 triple_suffix) 415 string(SUBSTRING ${COMPILER_RT_DEFAULT_TARGET_TRIPLE} 0 ${dash_index} triple_cpu) 416 if(COMPILER_RT_DEFAULT_TARGET_ONLY) 417 # Use exact spelling when building only for the target specified to CMake. 418 set(target "${COMPILER_RT_DEFAULT_TARGET_TRIPLE}") 419 elseif(ANDROID AND ${arch} STREQUAL "i386") 420 set(target "i686${triple_suffix}") 421 elseif(${arch} STREQUAL "amd64") 422 set(target "x86_64${triple_suffix}") 423 elseif(${arch} STREQUAL "sparc64") 424 set(target "sparcv9${triple_suffix}") 425 elseif("${arch}" MATCHES "mips64|mips64el") 426 string(REGEX REPLACE "-gnu.*" "-gnuabi64" triple_suffix_gnu "${triple_suffix}") 427 string(REGEX REPLACE "mipsisa32" "mipsisa64" triple_cpu_mips "${triple_cpu}") 428 string(REGEX REPLACE "^mips$" "mips64" triple_cpu_mips "${triple_cpu_mips}") 429 string(REGEX REPLACE "^mipsel$" "mips64el" triple_cpu_mips "${triple_cpu_mips}") 430 set(target "${triple_cpu_mips}${triple_suffix_gnu}") 431 elseif("${arch}" MATCHES "mips|mipsel") 432 string(REGEX REPLACE "-gnuabi.*" "-gnu" triple_suffix_gnu "${triple_suffix}") 433 string(REGEX REPLACE "mipsisa64" "mipsisa32" triple_cpu_mips "${triple_cpu}") 434 string(REGEX REPLACE "mips64" "mips" triple_cpu_mips "${triple_cpu_mips}") 435 set(target "${triple_cpu_mips}${triple_suffix_gnu}") 436 elseif("${arch}" MATCHES "^arm") 437 # Arch is arm, armhf, armv6m (anything else would come from using 438 # COMPILER_RT_DEFAULT_TARGET_ONLY, which is checked above). 439 if (${arch} STREQUAL "armhf") 440 # If we are building for hard float but our ABI is soft float. 441 if ("${triple_suffix}" MATCHES ".*eabi$") 442 # Change "eabi" -> "eabihf" 443 set(triple_suffix "${triple_suffix}hf") 444 endif() 445 # ABI is already set in the triple, don't repeat it in the architecture. 446 set(arch "arm") 447 else () 448 # If we are building for soft float, but the triple's ABI is hard float. 449 if ("${triple_suffix}" MATCHES ".*eabihf$") 450 # Change "eabihf" -> "eabi" 451 string(REGEX REPLACE "hf$" "" triple_suffix "${triple_suffix}") 452 endif() 453 endif() 454 set(target "${arch}${triple_suffix}") 455 else() 456 set(target "${arch}${triple_suffix}") 457 endif() 458 set(${variable} ${target} PARENT_SCOPE) 459endfunction() 460 461function(get_compiler_rt_install_dir arch install_dir) 462 if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE) 463 get_compiler_rt_target(${arch} target) 464 set(${install_dir} ${COMPILER_RT_INSTALL_LIBRARY_DIR}/${target} PARENT_SCOPE) 465 else() 466 set(${install_dir} ${COMPILER_RT_INSTALL_LIBRARY_DIR} PARENT_SCOPE) 467 endif() 468endfunction() 469 470function(get_compiler_rt_output_dir arch output_dir) 471 if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE) 472 get_compiler_rt_target(${arch} target) 473 set(${output_dir} ${COMPILER_RT_OUTPUT_LIBRARY_DIR}/${target} PARENT_SCOPE) 474 else() 475 set(${output_dir} ${COMPILER_RT_OUTPUT_LIBRARY_DIR} PARENT_SCOPE) 476 endif() 477endfunction() 478 479# compiler_rt_process_sources( 480# <OUTPUT_VAR> 481# <SOURCE_FILE> ... 482# [ADDITIONAL_HEADERS <header> ...] 483# ) 484# 485# Process the provided sources and write the list of new sources 486# into `<OUTPUT_VAR>`. 487# 488# ADDITIONAL_HEADERS - Adds the supplied header to list of sources for IDEs. 489# 490# This function is very similar to `llvm_process_sources()` but exists here 491# because we need to support standalone builds of compiler-rt. 492function(compiler_rt_process_sources OUTPUT_VAR) 493 cmake_parse_arguments( 494 ARG 495 "" 496 "" 497 "ADDITIONAL_HEADERS" 498 ${ARGN} 499 ) 500 set(sources ${ARG_UNPARSED_ARGUMENTS}) 501 set(headers "") 502 if (XCODE OR MSVC_IDE OR CMAKE_EXTRA_GENERATOR) 503 # For IDEs we need to tell CMake about header files. 504 # Otherwise they won't show up in UI. 505 set(headers ${ARG_ADDITIONAL_HEADERS}) 506 list(LENGTH headers headers_length) 507 if (${headers_length} GREATER 0) 508 set_source_files_properties(${headers} 509 PROPERTIES HEADER_FILE_ONLY ON) 510 endif() 511 endif() 512 set("${OUTPUT_VAR}" ${sources} ${headers} PARENT_SCOPE) 513endfunction() 514 515# Create install targets for a library and its parent component (if specified). 516function(add_compiler_rt_install_targets name) 517 cmake_parse_arguments(ARG "" "PARENT_TARGET" "" ${ARGN}) 518 519 if(ARG_PARENT_TARGET AND NOT TARGET install-${ARG_PARENT_TARGET}) 520 # The parent install target specifies the parent component to scrape up 521 # anything not installed by the individual install targets, and to handle 522 # installation when running the multi-configuration generators. 523 add_custom_target(install-${ARG_PARENT_TARGET} 524 DEPENDS ${ARG_PARENT_TARGET} 525 COMMAND "${CMAKE_COMMAND}" 526 -DCMAKE_INSTALL_COMPONENT=${ARG_PARENT_TARGET} 527 -P "${CMAKE_BINARY_DIR}/cmake_install.cmake") 528 add_custom_target(install-${ARG_PARENT_TARGET}-stripped 529 DEPENDS ${ARG_PARENT_TARGET} 530 COMMAND "${CMAKE_COMMAND}" 531 -DCMAKE_INSTALL_COMPONENT=${ARG_PARENT_TARGET} 532 -DCMAKE_INSTALL_DO_STRIP=1 533 -P "${CMAKE_BINARY_DIR}/cmake_install.cmake") 534 set_target_properties(install-${ARG_PARENT_TARGET} PROPERTIES 535 FOLDER "Compiler-RT Misc") 536 set_target_properties(install-${ARG_PARENT_TARGET}-stripped PROPERTIES 537 FOLDER "Compiler-RT Misc") 538 add_dependencies(install-compiler-rt install-${ARG_PARENT_TARGET}) 539 add_dependencies(install-compiler-rt-stripped install-${ARG_PARENT_TARGET}-stripped) 540 endif() 541 542 # We only want to generate per-library install targets if you aren't using 543 # an IDE because the extra targets get cluttered in IDEs. 544 if(NOT CMAKE_CONFIGURATION_TYPES) 545 add_custom_target(install-${name} 546 DEPENDS ${name} 547 COMMAND "${CMAKE_COMMAND}" 548 -DCMAKE_INSTALL_COMPONENT=${name} 549 -P "${CMAKE_BINARY_DIR}/cmake_install.cmake") 550 add_custom_target(install-${name}-stripped 551 DEPENDS ${name} 552 COMMAND "${CMAKE_COMMAND}" 553 -DCMAKE_INSTALL_COMPONENT=${name} 554 -DCMAKE_INSTALL_DO_STRIP=1 555 -P "${CMAKE_BINARY_DIR}/cmake_install.cmake") 556 # If you have a parent target specified, we bind the new install target 557 # to the parent install target. 558 if(LIB_PARENT_TARGET) 559 add_dependencies(install-${LIB_PARENT_TARGET} install-${name}) 560 add_dependencies(install-${LIB_PARENT_TARGET}-stripped install-${name}-stripped) 561 endif() 562 endif() 563endfunction() 564 565# Add warnings to catch potential errors that can lead to security 566# vulnerabilities. 567function(add_security_warnings out_flags macosx_sdk_version) 568 set(flags "${${out_flags}}") 569 570 append_list_if(COMPILER_RT_HAS_ARRAY_BOUNDS_FLAG -Werror=array-bounds flags) 571 append_list_if(COMPILER_RT_HAS_UNINITIALIZED_FLAG -Werror=uninitialized flags) 572 append_list_if(COMPILER_RT_HAS_SHADOW_FLAG -Werror=shadow flags) 573 append_list_if(COMPILER_RT_HAS_EMPTY_BODY_FLAG -Werror=empty-body flags) 574 append_list_if(COMPILER_RT_HAS_SIZEOF_POINTER_MEMACCESS_FLAG -Werror=sizeof-pointer-memaccess flags) 575 append_list_if(COMPILER_RT_HAS_SIZEOF_ARRAY_ARGUMENT_FLAG -Werror=sizeof-array-argument flags) 576 append_list_if(COMPILER_RT_HAS_SUSPICIOUS_MEMACCESS_FLAG -Werror=suspicious-memaccess flags) 577 append_list_if(COMPILER_RT_HAS_BUILTIN_MEMCPY_CHK_SIZE_FLAG -Werror=builtin-memcpy-chk-size flags) 578 append_list_if(COMPILER_RT_HAS_ARRAY_BOUNDS_POINTER_ARITHMETIC_FLAG -Werror=array-bounds-pointer-arithmetic flags) 579 append_list_if(COMPILER_RT_HAS_RETURN_STACK_ADDRESS_FLAG -Werror=return-stack-address flags) 580 append_list_if(COMPILER_RT_HAS_SIZEOF_ARRAY_DECAY_FLAG -Werror=sizeof-array-decay flags) 581 append_list_if(COMPILER_RT_HAS_FORMAT_INSUFFICIENT_ARGS_FLAG -Werror=format-insufficient-args flags) 582 append_list_if(COMPILER_RT_HAS_BUILTIN_FORMAL_SECURITY_FLAG -Werror=format-security flags) 583 append_list_if(COMPILER_RT_HAS_SIZEOF_ARRAY_DIV_FLAG -Werror=sizeof-array-div) 584 append_list_if(COMPILER_RT_HAS_SIZEOF_POINTER_DIV_FLAG -Werror=sizeof-pointer-div) 585 586 # Add -Wformat-nonliteral only if we can avoid adding the definition of 587 # eprintf. On Apple platforms, eprintf is needed only on macosx and only if 588 # its version is older than 10.7. 589 if ("${macosx_sdk_version}" VERSION_GREATER_EQUAL 10.7) 590 list(APPEND flags -Werror=format-nonliteral -DDONT_DEFINE_EPRINTF) 591 endif() 592 593 set(${out_flags} "${flags}" PARENT_SCOPE) 594endfunction() 595