1include(CMakeParseArguments) 2include(CompilerRTUtils) 3include(BuiltinTests) 4 5set(CMAKE_LIPO "lipo" CACHE PATH "path to the lipo tool") 6 7# On OS X SDKs can be installed anywhere on the base system and xcode-select can 8# set the default Xcode to use. This function finds the SDKs that are present in 9# the current Xcode. 10function(find_darwin_sdk_dir var sdk_name) 11 set(DARWIN_${sdk_name}_CACHED_SYSROOT "" CACHE STRING "Darwin SDK path for SDK ${sdk_name}.") 12 set(DARWIN_PREFER_PUBLIC_SDK OFF CACHE BOOL "Prefer Darwin public SDK, even when an internal SDK is present.") 13 14 if(DARWIN_${sdk_name}_CACHED_SYSROOT) 15 set(${var} ${DARWIN_${sdk_name}_CACHED_SYSROOT} PARENT_SCOPE) 16 return() 17 endif() 18 if(NOT DARWIN_PREFER_PUBLIC_SDK) 19 # Let's first try the internal SDK, otherwise use the public SDK. 20 execute_process( 21 COMMAND xcrun --sdk ${sdk_name}.internal --show-sdk-path 22 RESULT_VARIABLE result_process 23 OUTPUT_VARIABLE var_internal 24 OUTPUT_STRIP_TRAILING_WHITESPACE 25 ERROR_FILE /dev/null 26 ) 27 endif() 28 if((NOT result_process EQUAL 0) OR "" STREQUAL "${var_internal}") 29 execute_process( 30 COMMAND xcrun --sdk ${sdk_name} --show-sdk-path 31 RESULT_VARIABLE result_process 32 OUTPUT_VARIABLE var_internal 33 OUTPUT_STRIP_TRAILING_WHITESPACE 34 ERROR_FILE /dev/null 35 ) 36 else() 37 set(${var}_INTERNAL ${var_internal} PARENT_SCOPE) 38 endif() 39 if(result_process EQUAL 0) 40 set(${var} ${var_internal} PARENT_SCOPE) 41 endif() 42 message(STATUS "Checking DARWIN_${sdk_name}_SYSROOT - '${var_internal}'") 43 set(DARWIN_${sdk_name}_CACHED_SYSROOT ${var_internal} CACHE STRING "Darwin SDK path for SDK ${sdk_name}." FORCE) 44endfunction() 45 46function(find_darwin_sdk_version var sdk_name) 47 if (DARWIN_${sdk_name}_OVERRIDE_SDK_VERSION) 48 message(WARNING "Overriding ${sdk_name} SDK version to ${DARWIN_${sdk_name}_OVERRIDE_SDK_VERSION}") 49 set(${var} "${DARWIN_${sdk_name}_OVERRIDE_SDK_VERSION}" PARENT_SCOPE) 50 return() 51 endif() 52 set(result_process 1) 53 if(NOT DARWIN_PREFER_PUBLIC_SDK) 54 # Let's first try the internal SDK, otherwise use the public SDK. 55 execute_process( 56 COMMAND xcrun --sdk ${sdk_name}.internal --show-sdk-version 57 RESULT_VARIABLE result_process 58 OUTPUT_VARIABLE var_internal 59 OUTPUT_STRIP_TRAILING_WHITESPACE 60 ERROR_FILE /dev/null 61 ) 62 endif() 63 if((NOT ${result_process} EQUAL 0) OR "" STREQUAL "${var_internal}") 64 execute_process( 65 COMMAND xcrun --sdk ${sdk_name} --show-sdk-version 66 RESULT_VARIABLE result_process 67 OUTPUT_VARIABLE var_internal 68 OUTPUT_STRIP_TRAILING_WHITESPACE 69 ERROR_FILE /dev/null 70 ) 71 endif() 72 if(NOT result_process EQUAL 0) 73 message(FATAL_ERROR 74 "Failed to determine SDK version for \"${sdk_name}\" SDK") 75 endif() 76 # Check reported version looks sane. 77 if (NOT "${var_internal}" MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+)?$") 78 message(FATAL_ERROR 79 "Reported SDK version \"${var_internal}\" does not look like a version") 80 endif() 81 set(${var} ${var_internal} PARENT_SCOPE) 82endfunction() 83 84# There isn't a clear mapping of what architectures are supported with a given 85# target platform, but ld's version output does list the architectures it can 86# link for. 87function(darwin_get_toolchain_supported_archs output_var) 88 execute_process( 89 COMMAND "${CMAKE_LINKER}" -v 90 ERROR_VARIABLE LINKER_VERSION) 91 92 string(REGEX MATCH "configured to support archs: ([^\n]+)" 93 ARCHES_MATCHED "${LINKER_VERSION}") 94 if(ARCHES_MATCHED) 95 set(ARCHES "${CMAKE_MATCH_1}") 96 message(STATUS "Got ld supported ARCHES: ${ARCHES}") 97 string(REPLACE " " ";" ARCHES ${ARCHES}) 98 else() 99 # If auto-detecting fails, fall back to a default set 100 message(WARNING "Detecting supported architectures from 'ld -v' failed. Returning default set.") 101 set(ARCHES "i386;x86_64;armv7;armv7s;arm64") 102 endif() 103 104 set(${output_var} ${ARCHES} PARENT_SCOPE) 105endfunction() 106 107# This function takes an OS and a list of architectures and identifies the 108# subset of the architectures list that the installed toolchain can target. 109function(darwin_test_archs os valid_archs) 110 if(${valid_archs}) 111 message(STATUS "Using cached valid architectures for ${os}.") 112 return() 113 endif() 114 115 set(archs ${ARGN}) 116 if(NOT TEST_COMPILE_ONLY) 117 message(STATUS "Finding valid architectures for ${os}...") 118 set(SIMPLE_C ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/src.c) 119 file(WRITE ${SIMPLE_C} "#include <stdio.h>\nint main() { printf(__FILE__); return 0; }\n") 120 121 set(os_linker_flags) 122 foreach(flag ${DARWIN_${os}_LINK_FLAGS}) 123 set(os_linker_flags "${os_linker_flags} ${flag}") 124 endforeach() 125 126 # Disable building for i386 for macOS SDK >= 10.15. The SDK doesn't support 127 # linking for i386 and the corresponding OS doesn't allow running macOS i386 128 # binaries. 129 if ("${os}" STREQUAL "osx") 130 find_darwin_sdk_version(macosx_sdk_version "macosx") 131 if ("${macosx_sdk_version}" VERSION_GREATER 10.15 OR "${macosx_sdk_version}" VERSION_EQUAL 10.15) 132 message(STATUS "Disabling i386 slice for ${valid_archs}") 133 list(REMOVE_ITEM archs "i386") 134 endif() 135 endif() 136 endif() 137 138 # The simple program will build for x86_64h on the simulator because it is 139 # compatible with x86_64 libraries (mostly), but since x86_64h isn't actually 140 # a valid or useful architecture for the iOS simulator we should drop it. 141 if(${os} MATCHES "^(iossim|tvossim|watchossim)$") 142 list(REMOVE_ITEM archs "x86_64h") 143 endif() 144 145 set(working_archs) 146 foreach(arch ${archs}) 147 148 set(arch_linker_flags "-arch ${arch} ${os_linker_flags}") 149 if(TEST_COMPILE_ONLY) 150 # `-w` is used to surpress compiler warnings which `try_compile_only()` treats as an error. 151 try_compile_only(CAN_TARGET_${os}_${arch} FLAGS -v -arch ${arch} ${DARWIN_${os}_CFLAGS} -w) 152 else() 153 set(SAVED_CMAKE_EXE_LINKER_FLAGS ${CMAKE_EXE_LINKER_FLAGS}) 154 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${arch_linker_flags}") 155 try_compile(CAN_TARGET_${os}_${arch} ${CMAKE_BINARY_DIR} ${SIMPLE_C} 156 COMPILE_DEFINITIONS "-v -arch ${arch}" ${DARWIN_${os}_CFLAGS} 157 OUTPUT_VARIABLE TEST_OUTPUT) 158 set(CMAKE_EXE_LINKER_FLAGS ${SAVED_CMAKE_EXE_LINKER_FLAGS}) 159 endif() 160 if(${CAN_TARGET_${os}_${arch}}) 161 list(APPEND working_archs ${arch}) 162 else() 163 file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log 164 "Testing compiler for supporting ${os}-${arch}:\n" 165 "${TEST_OUTPUT}\n") 166 endif() 167 endforeach() 168 set(${valid_archs} ${working_archs} 169 CACHE STRING "List of valid architectures for platform ${os}." FORCE) 170endfunction() 171 172# This function checks the host cputype/cpusubtype to filter supported 173# architecture for the host OS. This is used to determine which tests are 174# available for the host. 175function(darwin_filter_host_archs input output) 176 list_intersect(tmp_var DARWIN_osx_ARCHS ${input}) 177 execute_process( 178 COMMAND sysctl hw.cputype 179 OUTPUT_VARIABLE CPUTYPE) 180 string(REGEX MATCH "hw.cputype: ([0-9]*)" 181 CPUTYPE_MATCHED "${CPUTYPE}") 182 set(ARM_HOST Off) 183 if(CPUTYPE_MATCHED) 184 # ARM cputype is (0x01000000 | 12) and X86(_64) is always 7. 185 if(${CMAKE_MATCH_1} GREATER 11) 186 set(ARM_HOST On) 187 endif() 188 endif() 189 190 if(ARM_HOST) 191 list(REMOVE_ITEM tmp_var i386) 192 list(REMOVE_ITEM tmp_var x86_64) 193 list(REMOVE_ITEM tmp_var x86_64h) 194 else() 195 list(REMOVE_ITEM tmp_var arm64) 196 list(REMOVE_ITEM tmp_var arm64e) 197 execute_process( 198 COMMAND sysctl hw.cpusubtype 199 OUTPUT_VARIABLE SUBTYPE) 200 string(REGEX MATCH "hw.cpusubtype: ([0-9]*)" 201 SUBTYPE_MATCHED "${SUBTYPE}") 202 203 set(HASWELL_SUPPORTED Off) 204 if(SUBTYPE_MATCHED) 205 if(${CMAKE_MATCH_1} GREATER 7) 206 set(HASWELL_SUPPORTED On) 207 endif() 208 endif() 209 if(NOT HASWELL_SUPPORTED) 210 list(REMOVE_ITEM tmp_var x86_64h) 211 endif() 212 endif() 213 214 set(${output} ${tmp_var} PARENT_SCOPE) 215endfunction() 216 217# Read and process the exclude file into a list of symbols 218function(darwin_read_list_from_file output_var file) 219 if(EXISTS ${file}) 220 file(READ ${file} EXCLUDES) 221 string(REPLACE "\n" ";" EXCLUDES ${EXCLUDES}) 222 set(${output_var} ${EXCLUDES} PARENT_SCOPE) 223 endif() 224endfunction() 225 226# this function takes an OS, architecture and minimum version and provides a 227# list of builtin functions to exclude 228function(darwin_find_excluded_builtins_list output_var) 229 cmake_parse_arguments(LIB 230 "" 231 "OS;ARCH;MIN_VERSION" 232 "" 233 ${ARGN}) 234 235 if(NOT LIB_OS OR NOT LIB_ARCH) 236 message(FATAL_ERROR "Must specify OS and ARCH to darwin_find_excluded_builtins_list!") 237 endif() 238 239 darwin_read_list_from_file(${LIB_OS}_BUILTINS 240 ${DARWIN_EXCLUDE_DIR}/${LIB_OS}.txt) 241 darwin_read_list_from_file(${LIB_OS}_${LIB_ARCH}_BASE_BUILTINS 242 ${DARWIN_EXCLUDE_DIR}/${LIB_OS}-${LIB_ARCH}.txt) 243 244 if(LIB_MIN_VERSION) 245 file(GLOB builtin_lists ${DARWIN_EXCLUDE_DIR}/${LIB_OS}*-${LIB_ARCH}.txt) 246 foreach(builtin_list ${builtin_lists}) 247 string(REGEX MATCH "${LIB_OS}([0-9\\.]*)-${LIB_ARCH}.txt" VERSION_MATCHED "${builtin_list}") 248 if (VERSION_MATCHED AND NOT CMAKE_MATCH_1 VERSION_LESS LIB_MIN_VERSION) 249 if(NOT smallest_version) 250 set(smallest_version ${CMAKE_MATCH_1}) 251 elseif(CMAKE_MATCH_1 VERSION_LESS smallest_version) 252 set(smallest_version ${CMAKE_MATCH_1}) 253 endif() 254 endif() 255 endforeach() 256 257 if(smallest_version) 258 darwin_read_list_from_file(${LIB_ARCH}_${LIB_OS}_BUILTINS 259 ${DARWIN_EXCLUDE_DIR}/${LIB_OS}${smallest_version}-${LIB_ARCH}.txt) 260 endif() 261 endif() 262 263 set(${output_var} 264 ${${LIB_ARCH}_${LIB_OS}_BUILTINS} 265 ${${LIB_OS}_${LIB_ARCH}_BASE_BUILTINS} 266 ${${LIB_OS}_BUILTINS} PARENT_SCOPE) 267endfunction() 268 269# adds a single builtin library for a single OS & ARCH 270macro(darwin_add_builtin_library name suffix) 271 cmake_parse_arguments(LIB 272 "" 273 "PARENT_TARGET;OS;ARCH" 274 "SOURCES;CFLAGS;DEFS;INCLUDE_DIRS" 275 ${ARGN}) 276 set(libname "${name}.${suffix}_${LIB_ARCH}_${LIB_OS}") 277 add_library(${libname} STATIC ${LIB_SOURCES}) 278 if(DARWIN_${LIB_OS}_SYSROOT) 279 set(sysroot_flag -isysroot ${DARWIN_${LIB_OS}_SYSROOT}) 280 endif() 281 282 # Make a copy of the compilation flags. 283 set(builtin_cflags ${LIB_CFLAGS}) 284 285 # Strip out any inappropriate flags for the target. 286 if("${LIB_ARCH}" MATCHES "^(armv7|armv7k|armv7s)$") 287 set(builtin_cflags "") 288 foreach(cflag "${LIB_CFLAGS}") 289 string(REPLACE "-fomit-frame-pointer" "" cflag "${cflag}") 290 list(APPEND builtin_cflags ${cflag}) 291 endforeach(cflag) 292 endif() 293 294 if ("${LIB_OS}" MATCHES ".*sim$") 295 # Pass an explicit -simulator environment to the -target option to ensure 296 # that we don't rely on the architecture to infer whether we're building 297 # for the simulator. 298 string(REGEX REPLACE "sim" "" base_os "${LIB_OS}") 299 list(APPEND builtin_cflags 300 -target "${LIB_ARCH}-apple-${base_os}${DARWIN_${LIBOS}_BUILTIN_MIN_VER}-simulator") 301 endif() 302 303 if ("${COMPILER_RT_ENABLE_MACCATALYST}" AND 304 "${LIB_OS}" MATCHES "^osx$") 305 # Build the macOS builtins with Mac Catalyst support. 306 list(APPEND builtin_cflags 307 -target ${LIB_ARCH}-apple-macos${DARWIN_osx_BUILTIN_MIN_VER} 308 -darwin-target-variant ${LIB_ARCH}-apple-ios13.1-macabi) 309 endif() 310 311 set_target_compile_flags(${libname} 312 ${sysroot_flag} 313 ${DARWIN_${LIB_OS}_BUILTIN_MIN_VER_FLAG} 314 ${builtin_cflags}) 315 target_include_directories(${libname} 316 PRIVATE ${LIB_INCLUDE_DIRS}) 317 set_property(TARGET ${libname} APPEND PROPERTY 318 COMPILE_DEFINITIONS ${LIB_DEFS}) 319 set_target_properties(${libname} PROPERTIES 320 OUTPUT_NAME ${libname}${COMPILER_RT_OS_SUFFIX}) 321 set_target_properties(${libname} PROPERTIES 322 OSX_ARCHITECTURES ${LIB_ARCH}) 323 324 if(LIB_PARENT_TARGET) 325 add_dependencies(${LIB_PARENT_TARGET} ${libname}) 326 endif() 327 328 list(APPEND ${LIB_OS}_${suffix}_libs ${libname}) 329 list(APPEND ${LIB_OS}_${suffix}_lipo_flags -arch ${arch} $<TARGET_FILE:${libname}>) 330 set_target_properties(${libname} PROPERTIES FOLDER "Compiler-RT Libraries") 331endmacro() 332 333function(darwin_lipo_libs name) 334 cmake_parse_arguments(LIB 335 "" 336 "PARENT_TARGET;OUTPUT_DIR;INSTALL_DIR" 337 "LIPO_FLAGS;DEPENDS" 338 ${ARGN}) 339 if(LIB_DEPENDS AND LIB_LIPO_FLAGS) 340 add_custom_command(OUTPUT ${LIB_OUTPUT_DIR}/lib${name}.a 341 COMMAND ${CMAKE_COMMAND} -E make_directory ${LIB_OUTPUT_DIR} 342 COMMAND ${CMAKE_LIPO} -output 343 ${LIB_OUTPUT_DIR}/lib${name}.a 344 -create ${LIB_LIPO_FLAGS} 345 DEPENDS ${LIB_DEPENDS} 346 ) 347 add_custom_target(${name} 348 DEPENDS ${LIB_OUTPUT_DIR}/lib${name}.a) 349 set_target_properties(${name} PROPERTIES FOLDER "Compiler-RT Misc") 350 add_dependencies(${LIB_PARENT_TARGET} ${name}) 351 352 if(CMAKE_CONFIGURATION_TYPES) 353 set(install_component ${LIB_PARENT_TARGET}) 354 else() 355 set(install_component ${name}) 356 endif() 357 install(FILES ${LIB_OUTPUT_DIR}/lib${name}.a 358 DESTINATION ${LIB_INSTALL_DIR} 359 COMPONENT ${install_component}) 360 add_compiler_rt_install_targets(${name} PARENT_TARGET ${LIB_PARENT_TARGET}) 361 else() 362 message(WARNING "Not generating lipo target for ${name} because no input libraries exist.") 363 endif() 364endfunction() 365 366# Filter the list of builtin sources for Darwin, then delegate to the generic 367# filtering. 368# 369# `exclude_or_include` must be one of: 370# - EXCLUDE: remove every item whose name (w/o extension) matches a name in 371# `excluded_list`. 372# - INCLUDE: keep only items whose name (w/o extension) matches something 373# in `excluded_list`. 374function(darwin_filter_builtin_sources output_var name exclude_or_include excluded_list) 375 if(exclude_or_include STREQUAL "EXCLUDE") 376 set(filter_action GREATER) 377 set(filter_value -1) 378 elseif(exclude_or_include STREQUAL "INCLUDE") 379 set(filter_action LESS) 380 set(filter_value 0) 381 else() 382 message(FATAL_ERROR "darwin_filter_builtin_sources called without EXCLUDE|INCLUDE") 383 endif() 384 385 set(intermediate ${ARGN}) 386 foreach(_file ${intermediate}) 387 get_filename_component(_name_we ${_file} NAME_WE) 388 list(FIND ${excluded_list} ${_name_we} _found) 389 if(_found ${filter_action} ${filter_value}) 390 list(REMOVE_ITEM intermediate ${_file}) 391 endif() 392 endforeach() 393 394 filter_builtin_sources(intermediate ${name}) 395 set(${output_var} ${intermediate} PARENT_SCOPE) 396endfunction() 397 398# Generates builtin libraries for all operating systems specified in ARGN. Each 399# OS library is constructed by lipo-ing together single-architecture libraries. 400macro(darwin_add_builtin_libraries) 401 set(DARWIN_EXCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/Darwin-excludes) 402 403 set(CFLAGS "-fPIC -O3 -fvisibility=hidden -DVISIBILITY_HIDDEN -Wall -fomit-frame-pointer") 404 set(CMAKE_C_FLAGS "") 405 set(CMAKE_CXX_FLAGS "") 406 set(CMAKE_ASM_FLAGS "") 407 408 append_string_if(COMPILER_RT_HAS_ASM_LSE " -DHAS_ASM_LSE" CFLAGS) 409 410 set(PROFILE_SOURCES ../profile/InstrProfiling.c 411 ../profile/InstrProfilingBuffer.c 412 ../profile/InstrProfilingPlatformDarwin.c 413 ../profile/InstrProfilingWriter.c 414 ../profile/InstrProfilingInternal.c 415 ../profile/InstrProfilingVersionVar.c) 416 foreach (os ${ARGN}) 417 list_intersect(DARWIN_BUILTIN_ARCHS DARWIN_${os}_BUILTIN_ARCHS BUILTIN_SUPPORTED_ARCH) 418 419 if((arm64 IN_LIST DARWIN_BUILTIN_ARCHS OR arm64e IN_LIST DARWIN_BUILTIN_ARCHS) AND NOT TARGET lse_builtin_symlinks) 420 add_custom_target( 421 lse_builtin_symlinks 422 BYPRODUCTS ${lse_builtins} 423 ${arm64_lse_commands} 424 ) 425 426 set(deps_arm64 lse_builtin_symlinks) 427 set(deps_arm64e lse_builtin_symlinks) 428 endif() 429 430 foreach (arch ${DARWIN_BUILTIN_ARCHS}) 431 darwin_find_excluded_builtins_list(${arch}_${os}_EXCLUDED_BUILTINS 432 OS ${os} 433 ARCH ${arch} 434 MIN_VERSION ${DARWIN_${os}_BUILTIN_MIN_VER}) 435 436 darwin_filter_builtin_sources(filtered_sources 437 ${os}_${arch} 438 EXCLUDE ${arch}_${os}_EXCLUDED_BUILTINS 439 ${${arch}_SOURCES}) 440 441 darwin_add_builtin_library(clang_rt builtins 442 OS ${os} 443 ARCH ${arch} 444 DEPS ${deps_${arch}} 445 SOURCES ${filtered_sources} 446 CFLAGS ${CFLAGS} -arch ${arch} 447 PARENT_TARGET builtins) 448 endforeach() 449 450 # Don't build cc_kext libraries for simulator platforms 451 if(NOT DARWIN_${os}_SKIP_CC_KEXT) 452 foreach (arch ${DARWIN_BUILTIN_ARCHS}) 453 # By not specifying MIN_VERSION this only reads the OS and OS-arch lists. 454 # We don't want to filter out the builtins that are present in libSystem 455 # because kexts can't link libSystem. 456 darwin_find_excluded_builtins_list(${arch}_${os}_EXCLUDED_BUILTINS 457 OS ${os} 458 ARCH ${arch}) 459 460 darwin_filter_builtin_sources(filtered_sources 461 cc_kext_${os}_${arch} 462 EXCLUDE ${arch}_${os}_EXCLUDED_BUILTINS 463 ${${arch}_SOURCES}) 464 465 # In addition to the builtins cc_kext includes some profile sources 466 darwin_add_builtin_library(clang_rt cc_kext 467 OS ${os} 468 ARCH ${arch} 469 DEPS ${deps_${arch}} 470 SOURCES ${filtered_sources} ${PROFILE_SOURCES} 471 CFLAGS ${CFLAGS} -arch ${arch} -mkernel 472 DEFS KERNEL_USE 473 INCLUDE_DIRS ../../include 474 PARENT_TARGET builtins) 475 endforeach() 476 set(archive_name clang_rt.cc_kext_${os}) 477 if(${os} STREQUAL "osx") 478 set(archive_name clang_rt.cc_kext) 479 endif() 480 darwin_lipo_libs(${archive_name} 481 PARENT_TARGET builtins 482 LIPO_FLAGS ${${os}_cc_kext_lipo_flags} 483 DEPENDS ${${os}_cc_kext_libs} 484 OUTPUT_DIR ${COMPILER_RT_OUTPUT_LIBRARY_DIR} 485 INSTALL_DIR ${COMPILER_RT_INSTALL_LIBRARY_DIR}) 486 endif() 487 endforeach() 488 489 foreach (os ${ARGN}) 490 darwin_lipo_libs(clang_rt.${os} 491 PARENT_TARGET builtins 492 LIPO_FLAGS ${${os}_builtins_lipo_flags} 493 DEPENDS ${${os}_builtins_libs} 494 OUTPUT_DIR ${COMPILER_RT_OUTPUT_LIBRARY_DIR} 495 INSTALL_DIR ${COMPILER_RT_INSTALL_LIBRARY_DIR}) 496 endforeach() 497 darwin_add_embedded_builtin_libraries() 498endmacro() 499 500macro(darwin_add_embedded_builtin_libraries) 501 # this is a hacky opt-out. If you can't target both intel and arm 502 # architectures we bail here. 503 set(DARWIN_SOFT_FLOAT_ARCHS armv6m armv7m armv7em armv7) 504 set(DARWIN_HARD_FLOAT_ARCHS armv7em armv7) 505 if(COMPILER_RT_SUPPORTED_ARCH MATCHES ".*armv.*") 506 list(FIND COMPILER_RT_SUPPORTED_ARCH i386 i386_idx) 507 if(i386_idx GREATER -1) 508 list(APPEND DARWIN_HARD_FLOAT_ARCHS i386) 509 endif() 510 511 list(FIND COMPILER_RT_SUPPORTED_ARCH x86_64 x86_64_idx) 512 if(x86_64_idx GREATER -1) 513 list(APPEND DARWIN_HARD_FLOAT_ARCHS x86_64) 514 endif() 515 516 set(MACHO_SYM_DIR ${CMAKE_CURRENT_SOURCE_DIR}/macho_embedded) 517 518 set(CFLAGS "-Oz -Wall -fomit-frame-pointer -ffreestanding") 519 set(CMAKE_C_FLAGS "") 520 set(CMAKE_CXX_FLAGS "") 521 set(CMAKE_ASM_FLAGS "") 522 523 set(SOFT_FLOAT_FLAG -mfloat-abi=soft) 524 set(HARD_FLOAT_FLAG -mfloat-abi=hard) 525 526 set(ENABLE_PIC Off) 527 set(PIC_FLAG -fPIC) 528 set(STATIC_FLAG -static) 529 530 set(DARWIN_macho_embedded_ARCHS armv6m armv7m armv7em armv7 i386 x86_64) 531 532 set(DARWIN_macho_embedded_LIBRARY_OUTPUT_DIR 533 ${COMPILER_RT_OUTPUT_LIBRARY_DIR}/macho_embedded) 534 set(DARWIN_macho_embedded_LIBRARY_INSTALL_DIR 535 ${COMPILER_RT_INSTALL_LIBRARY_DIR}/macho_embedded) 536 537 set(CFLAGS_armv7 "-target thumbv7-apple-darwin-eabi") 538 set(CFLAGS_i386 "-march=pentium") 539 540 darwin_read_list_from_file(common_FUNCTIONS ${MACHO_SYM_DIR}/common.txt) 541 darwin_read_list_from_file(thumb2_FUNCTIONS ${MACHO_SYM_DIR}/thumb2.txt) 542 darwin_read_list_from_file(thumb2_64_FUNCTIONS ${MACHO_SYM_DIR}/thumb2-64.txt) 543 darwin_read_list_from_file(arm_FUNCTIONS ${MACHO_SYM_DIR}/arm.txt) 544 darwin_read_list_from_file(i386_FUNCTIONS ${MACHO_SYM_DIR}/i386.txt) 545 546 547 set(armv6m_FUNCTIONS ${common_FUNCTIONS} ${arm_FUNCTIONS}) 548 set(armv7m_FUNCTIONS ${common_FUNCTIONS} ${arm_FUNCTIONS} ${thumb2_FUNCTIONS}) 549 set(armv7em_FUNCTIONS ${common_FUNCTIONS} ${arm_FUNCTIONS} ${thumb2_FUNCTIONS}) 550 set(armv7_FUNCTIONS ${common_FUNCTIONS} ${arm_FUNCTIONS} ${thumb2_FUNCTIONS} ${thumb2_64_FUNCTIONS}) 551 set(i386_FUNCTIONS ${common_FUNCTIONS} ${i386_FUNCTIONS}) 552 set(x86_64_FUNCTIONS ${common_FUNCTIONS}) 553 554 foreach(arch ${DARWIN_macho_embedded_ARCHS}) 555 darwin_filter_builtin_sources(${arch}_filtered_sources 556 macho_embedded_${arch} 557 INCLUDE ${arch}_FUNCTIONS 558 ${${arch}_SOURCES}) 559 if(NOT ${arch}_filtered_sources) 560 message(WARNING "${arch}_SOURCES: ${${arch}_SOURCES}") 561 message(WARNING "${arch}_FUNCTIONS: ${${arch}_FUNCTIONS}") 562 message(FATAL_ERROR "Empty filtered sources!") 563 endif() 564 endforeach() 565 566 foreach(float_type SOFT HARD) 567 foreach(type PIC STATIC) 568 string(TOLOWER "${float_type}_${type}" lib_suffix) 569 foreach(arch ${DARWIN_${float_type}_FLOAT_ARCHS}) 570 set(DARWIN_macho_embedded_SYSROOT ${DARWIN_osx_SYSROOT}) 571 set(float_flag) 572 if(${arch} MATCHES "^arm") 573 # x86 targets are hard float by default, but the complain about the 574 # float ABI flag, so don't pass it unless we're targeting arm. 575 set(float_flag ${${float_type}_FLOAT_FLAG}) 576 endif() 577 darwin_add_builtin_library(clang_rt ${lib_suffix} 578 OS macho_embedded 579 ARCH ${arch} 580 SOURCES ${${arch}_filtered_sources} 581 CFLAGS ${CFLAGS} -arch ${arch} ${${type}_FLAG} ${float_flag} ${CFLAGS_${arch}} 582 PARENT_TARGET builtins) 583 endforeach() 584 foreach(lib ${macho_embedded_${lib_suffix}_libs}) 585 set_target_properties(${lib} PROPERTIES LINKER_LANGUAGE C) 586 endforeach() 587 darwin_lipo_libs(clang_rt.${lib_suffix} 588 PARENT_TARGET builtins 589 LIPO_FLAGS ${macho_embedded_${lib_suffix}_lipo_flags} 590 DEPENDS ${macho_embedded_${lib_suffix}_libs} 591 OUTPUT_DIR ${DARWIN_macho_embedded_LIBRARY_OUTPUT_DIR} 592 INSTALL_DIR ${DARWIN_macho_embedded_LIBRARY_INSTALL_DIR}) 593 endforeach() 594 endforeach() 595 endif() 596endmacro() 597