src/compiler-rt/make/platform/clang_darwin.mk

   1 # These are the functions which clang needs when it is targeting a previous
   2 # version of the OS. The issue is that the backend may use functions which were
   3 # not present in the libgcc that shipped on the platform. In such cases, we link
   4 # with a version of the library which contains private_extern definitions of all
   5 # the extra functions which might be referenced.
   6
   7 Description := Static runtime libraries for clang/Darwin.
   8
   9 # A function that ensures we don't try to build for architectures and SDKs
  10 # that we don't have working toolchains for. Arguments:
  11 # (1): List of architectures
  12 # (2): Library name
  13 # (3): SDK path
  14 # The result is a possibly empty subset of the architectures from argument 1.
  15 CheckArches = \
  16   $(shell \
  17     result=""; \
  18     if [ "X$(3)" != X ]; then \
  19       for arch in $(1); do \
  20         if $(LD) -v 2>&1 | grep "configured to support" \
  21              | tr ' ' '\n' | grep "^$$arch$$" >/dev/null 2>/dev/null; then \
  22           if $(CC) -arch $$arch \
  23             -integrated-as \
  24             $(ProjSrcRoot)/make/platform/clang_darwin_test_input.c \
  25             -isysroot $(3) \
  26             -o /dev/null > /dev/null 2> /dev/null; then \
  27               result="$$result$$arch "; \
  28           else \
  29             printf 1>&2 \
  30              "warning: clang_darwin.mk: dropping arch '$$arch' from lib '$(2)'"; \
  31             printf 1>&2 " (clang or system libraries do not support it)\n"; \
  32           fi; \
  33         else \
  34           printf 1>&2 \
  35             "warning: clang_darwin.mk: dropping arch '$$arch' from lib '$(2)'";\
  36           printf 1>&2 " (ld does not support it)\n"; \
  37         fi; \
  38       done; \
  39     fi; \
  40     echo $$result)
  41
  42 XCRun = \
  43   $(shell \
  44     result=`xcrun -find $(1) 2> /dev/null`; \
  45     if [ "$$?" != "0" ]; then result=$(1); fi; \
  46     echo $$result)
  47 # Prefer building with the internal SDKs.
  48 XCRunSdkPath = \
  49   $(shell \
  50     result=`xcrun --sdk $(1).internal --show-sdk-path 2> /dev/null`; \
  51     if [ "$$?" != "0" ]; then \
  52       result=`xcrun --sdk $(1) --show-sdk-path 2> /dev/null`; \
  53       if [ "$$?" != "0" ]; then result=""; fi; \
  54     fi; \
  55     echo $$result)
  56 ###
  57
  58 CC       := $(call XCRun,clang)
  59 LD       := $(shell $(CC) -print-prog-name=ld)
  60 AR       := $(call XCRun,ar)
  61 RANLIB   := $(call XCRun,ranlib)
  62 STRIP    := $(call XCRun,strip)
  63 LIPO     := $(call XCRun,lipo)
  64 DSYMUTIL := $(call XCRun,dsymutil)
  65
  66 OSX_SDK := $(call XCRunSdkPath,macosx)
  67 IOS_SDK := $(call XCRunSdkPath,iphoneos)
  68 IOSSIM_SDK := $(call XCRunSdkPath,iphonesimulator)
  69
  70 Configs :=
  71 UniversalArchs :=
  72
  73 # Configuration solely for providing access to an eprintf symbol, which may
  74 # still be referenced from Darwin system headers. This symbol is only ever
  75 # needed on i386.
  76 Configs += eprintf
  77 UniversalArchs.eprintf := $(call CheckArches,i386,eprintf,$(OSX_SDK))
  78
  79 # Configuration for targeting 10.4. We need a few functions missing from
  80 # libgcc_s.10.4.dylib. We only build x86 slices since clang doesn't really
  81 # support targeting PowerPC.
  82 Configs += 10.4
  83 UniversalArchs.10.4 := $(call CheckArches,i386 x86_64,10.4,$(OSX_SDK))
  84
  85 # Configuration for targeting iOS for a couple of functions that didn't
  86 # make it into libSystem.
  87 Configs += ios
  88 UniversalArchs.ios := $(call CheckArches,i386 x86_64,ios,$(IOSSIM_SDK))
  89 UniversalArchs.ios += $(call CheckArches,armv7 arm64,ios,$(IOS_SDK))
  90
  91 # Configuration for targeting OSX. These functions may not be in libSystem
  92 # so we should provide our own.
  93 Configs += osx
  94 UniversalArchs.osx := $(call CheckArches,i386 x86_64 x86_64h,osx,$(OSX_SDK))
  95
  96 # Configuration for use with kernel/kexts.
  97 Configs += cc_kext
  98 UniversalArchs.cc_kext := $(call CheckArches,i386 x86_64 x86_64h,cc_kext,$(OSX_SDK))
  99
 100 # Configuration for use with iOS kernel/kexts
 101 Configs += cc_kext_ios
 102 UniversalArchs.cc_kext_ios += $(call CheckArches,armv7,cc_kext_ios,$(IOS_SDK))
 103
 104 # Darwin 10.6 has a bug in cctools that makes it unable to use ranlib on our ARM
 105 # object files. If we are on that platform, strip out all ARM archs. We still
 106 # build the libraries themselves so that Clang can find them where it expects
 107 # them, even though they might not have an expected slice.
 108 ifneq ($(shell test -x /usr/bin/sw_vers && sw_vers -productVersion | grep 10.6),)
 109 UniversalArchs.ios := $(filter-out armv7, $(UniversalArchs.ios))
 110 UniversalArchs.cc_kext_ios := $(filter-out armv7, $(UniversalArchs.cc_kext_ios))
 111 endif
 112
 113 # If RC_SUPPORTED_ARCHS is defined, treat it as a list of the architectures we
 114 # are intended to support and limit what we try to build to that.
 115 ifneq ($(RC_SUPPORTED_ARCHS),)
 116 $(foreach config,$(Configs),\
 117   $(call Set,UniversalArchs.$(config),\
 118         $(filter $(RC_SUPPORTED_ARCHS),$(UniversalArchs.$(config)))))
 119 endif
 120
 121 # Remove empty configs if we end up dropping all the requested
 122 # archs for a particular config.
 123 $(foreach config,$(Configs),\
 124   $(if $(strip $(UniversalArchs.$(config))),,\
 125         $(call Set,Configs,$(filter-out $(config),$(Configs)))))
 126
 127 ###
 128
 129 # Forcibly strip off any -arch, as that totally breaks our universal support.
 130 override CC := $(subst -arch ,-arch_,$(CC))
 131 override CC := $(patsubst -arch_%,,$(CC))
 132
 133 CFLAGS := -Wall -Werror -O3 -fomit-frame-pointer
 134
 135 # Always set deployment target arguments for every build, these libraries should
 136 # never depend on the environmental overrides. We simply set them to minimum
 137 # supported deployment target -- nothing in the compiler-rt libraries should
 138 # actually depend on the deployment target.
 139 OSX_DEPLOYMENT_ARGS := -mmacosx-version-min=10.4
 140 IOS_DEPLOYMENT_ARGS := -mios-version-min=1.0
 141 IOS6_DEPLOYMENT_ARGS := -mios-version-min=6.0
 142 IOSSIM_DEPLOYMENT_ARGS := -mios-simulator-version-min=1.0
 143
 144 OSX_DEPLOYMENT_ARGS += -isysroot $(OSX_SDK)
 145 IOS_DEPLOYMENT_ARGS += -isysroot $(IOS_SDK)
 146 IOS6_DEPLOYMENT_ARGS += -isysroot $(IOS_SDK)
 147 IOSSIM_DEPLOYMENT_ARGS += -isysroot $(IOSSIM_SDK)
 148
 149 CFLAGS.eprintf          := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
 150 CFLAGS.10.4             := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
 151
 152 SANITIZER_MACOSX_DEPLOYMENT_ARGS := -mmacosx-version-min=10.7
 153 SANITIZER_IOSSIM_DEPLOYMENT_ARGS := -mios-simulator-version-min=7.0 \
 154   -isysroot $(IOSSIM_SDK)
 155 SANITIZER_CFLAGS := -fno-builtin -gline-tables-only -stdlib=libc++
 156
 157
 158 CFLAGS.ios.i386         := $(CFLAGS) $(IOSSIM_DEPLOYMENT_ARGS)
 159 CFLAGS.ios.x86_64       := $(CFLAGS) $(IOSSIM_DEPLOYMENT_ARGS)
 160 CFLAGS.ios.armv7        := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
 161 CFLAGS.ios.armv7k       := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
 162 CFLAGS.ios.armv7s       := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
 163 CFLAGS.ios.arm64        := $(CFLAGS) $(IOS6_DEPLOYMENT_ARGS)
 164 CFLAGS.osx.i386         := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
 165 CFLAGS.osx.x86_64       := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
 166 CFLAGS.osx.x86_64h      := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
 167 CFLAGS.cc_kext.i386     := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
 168 CFLAGS.cc_kext.x86_64   := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
 169 CFLAGS.cc_kext.x86_64h  := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
 170 CFLAGS.cc_kext_ios.armv7        := $(CFLAGS) $(IOS6_DEPLOYMENT_ARGS)
 171 CFLAGS.cc_kext_ios.armv7k       := $(CFLAGS) $(IOS6_DEPLOYMENT_ARGS)
 172 CFLAGS.cc_kext_ios.armv7s       := $(CFLAGS) $(IOS6_DEPLOYMENT_ARGS)
 173 CFLAGS.cc_kext_ios.arm64        := $(CFLAGS) $(IOS6_DEPLOYMENT_ARGS)
 174
 175 SANITIZER_LDFLAGS := -stdlib=libc++ -lc++ -lc++abi
 176
 177 ATOMIC_FUNCTIONS := \
 178         atomic_flag_clear \
 179         atomic_flag_clear_explicit \
 180         atomic_flag_test_and_set \
 181         atomic_flag_test_and_set_explicit \
 182         atomic_signal_fence \
 183         atomic_thread_fence
 184
 185 FP16_FUNCTIONS := \
 186         extendhfsf2 \
 187         truncdfhf2 \
 188         truncsfhf2
 189
 190 FUNCTIONS.eprintf := eprintf
 191 FUNCTIONS.10.4 := eprintf floatundidf floatundisf floatundixf
 192
 193 FUNCTIONS.ios       := divmodsi4 udivmodsi4 mulosi4 mulodi4 muloti4 \
 194                        $(ATOMIC_FUNCTIONS) $(FP16_FUNCTIONS)
 195 # On x86, the divmod functions reference divsi.
 196 FUNCTIONS.ios.i386    := $(FUNCTIONS.ios) \
 197                          divsi3 udivsi3
 198 FUNCTIONS.ios.x86_64  := $(FUNCTIONS.ios.i386)
 199 FUNCTIONS.ios.arm64   := mulsc3 muldc3 divsc3 divdc3 udivti3 umodti3 \
 200                          $(ATOMIC_FUNCTIONS)
 201
 202 FUNCTIONS.osx   := mulosi4 mulodi4 muloti4 $(ATOMIC_FUNCTIONS) $(FP16_FUNCTIONS)
 203
 204 CCKEXT_PROFILE_FUNCTIONS := \
 205         InstrProfiling \
 206         InstrProfilingBuffer \
 207         InstrProfilingPlatformDarwin
 208
 209 CCKEXT_COMMON_FUNCTIONS := \
 210         $(CCKEXT_PROFILE_FUNCTIONS) \
 211         absvdi2 \
 212         absvsi2 \
 213         addvdi3 \
 214         addvsi3 \
 215         ashldi3 \
 216         ashrdi3 \
 217         bswapdi2 \
 218         bswapsi2 \
 219         clzdi2 \
 220         clzsi2 \
 221         cmpdi2 \
 222         ctzdi2 \
 223         ctzsi2 \
 224         divdc3 \
 225         divdi3 \
 226         divsc3 \
 227         divmodsi4 \
 228         udivmodsi4 \
 229         do_global_dtors \
 230         eprintf \
 231         extendhfsf2 \
 232         ffsdi2 \
 233         fixdfdi \
 234         fixsfdi \
 235         fixunsdfdi \
 236         fixunsdfsi \
 237         fixunssfdi \
 238         fixunssfsi \
 239         floatdidf \
 240         floatdisf \
 241         floatundidf \
 242         floatundisf \
 243         gcc_bcmp \
 244         lshrdi3 \
 245         moddi3 \
 246         muldc3 \
 247         muldi3 \
 248         mulsc3 \
 249         mulvdi3 \
 250         mulvsi3 \
 251         negdi2 \
 252         negvdi2 \
 253         negvsi2 \
 254         paritydi2 \
 255         paritysi2 \
 256         popcountdi2 \
 257         popcountsi2 \
 258         powidf2 \
 259         powisf2 \
 260         subvdi3 \
 261         subvsi3 \
 262         truncdfhf2 \
 263         truncsfhf2 \
 264         ucmpdi2 \
 265         udiv_w_sdiv \
 266         udivdi3 \
 267         udivmoddi4 \
 268         umoddi3
 269
 270 CCKEXT_ARM_FUNCTIONS := $(CCKEXT_COMMON_FUNCTIONS) \
 271         adddf3 \
 272         addsf3 \
 273         aeabi_cdcmpeq \
 274         aeabi_cdrcmple \
 275         aeabi_cfcmpeq \
 276         aeabi_cfrcmple \
 277         aeabi_dcmpeq \
 278         aeabi_dcmpge \
 279         aeabi_dcmpgt \
 280         aeabi_dcmple \
 281         aeabi_dcmplt \
 282         aeabi_drsub \
 283         aeabi_fcmpeq \
 284         aeabi_fcmpge \
 285         aeabi_fcmpgt \
 286         aeabi_fcmple \
 287         aeabi_fcmplt \
 288         aeabi_frsub \
 289         aeabi_idivmod \
 290         aeabi_uidivmod \
 291         cmpdf2 \
 292         cmpsf2 \
 293         div0 \
 294         divdf3 \
 295         divsf3 \
 296         divsi3 \
 297         extendsfdf2 \
 298         ffssi2 \
 299         fixdfsi \
 300         fixsfsi \
 301         floatsidf \
 302         floatsisf \
 303         floatunsidf \
 304         floatunsisf \
 305         comparedf2 \
 306         comparesf2 \
 307         modsi3 \
 308         muldf3 \
 309         mulsf3 \
 310         mulodi4 \
 311         negdf2 \
 312         negsf2 \
 313         subdf3 \
 314         subsf3 \
 315         switch16 \
 316         switch32 \
 317         switch8 \
 318         switchu8 \
 319         truncdfsf2 \
 320         udivsi3 \
 321         umodsi3 \
 322         unorddf2 \
 323         unordsf2
 324
 325 CCKEXT_ARMVFP_FUNCTIONS := $(CCKEXT_ARM_FUNCTIONS) \
 326         adddf3vfp \
 327         addsf3vfp \
 328         divdf3vfp \
 329         divsf3vfp \
 330         eqdf2vfp \
 331         eqsf2vfp \
 332         extendsfdf2vfp \
 333         fixdfsivfp \
 334         fixsfsivfp \
 335         fixunsdfsivfp \
 336         fixunssfsivfp \
 337         floatsidfvfp \
 338         floatsisfvfp \
 339         floatunssidfvfp \
 340         floatunssisfvfp \
 341         gedf2vfp \
 342         gesf2vfp \
 343         gtdf2vfp \
 344         gtsf2vfp \
 345         ledf2vfp \
 346         lesf2vfp \
 347         ltdf2vfp \
 348         ltsf2vfp \
 349         muldf3vfp \
 350         mulsf3vfp \
 351         nedf2vfp \
 352         nesf2vfp \
 353         subdf3vfp \
 354         subsf3vfp \
 355         truncdfsf2vfp \
 356         unorddf2vfp \
 357         unordsf2vfp
 358
 359 CCKEXT_ARM64_FUNCTIONS := \
 360         $(CCKEXT_PROFILE_FUNCTIONS) \
 361         divdc3 \
 362         divsc3 \
 363         muldc3 \
 364         mulsc3 \
 365         udivti3 \
 366         umodti3
 367
 368 FUNCTIONS.cc_kext_ios.armv7 := $(CCKEXT_ARMVFP_FUNCTIONS)
 369 FUNCTIONS.cc_kext_ios.armv7k := $(CCKEXT_ARMVFP_FUNCTIONS)
 370 FUNCTIONS.cc_kext_ios.armv7s := $(CCKEXT_ARMVFP_FUNCTIONS)
 371 FUNCTIONS.cc_kext_ios.arm64 := $(CCKEXT_ARM64_FUNCTIONS)
 372
 373 CCKEXT_X86_FUNCTIONS := $(CCKEXT_COMMON_FUNCTIONS) \
 374         divxc3 \
 375         fixunsxfdi \
 376         fixunsxfsi \
 377         fixxfdi \
 378         floatdixf \
 379         floatundixf \
 380         mulxc3 \
 381         powixf2
 382
 383 FUNCTIONS.cc_kext.i386 := $(CCKEXT_X86_FUNCTIONS) \
 384         ffssi2 \
 385         i686.get_pc_thunk.eax \
 386         i686.get_pc_thunk.ebp \
 387         i686.get_pc_thunk.ebx \
 388         i686.get_pc_thunk.ecx \
 389         i686.get_pc_thunk.edi \
 390         i686.get_pc_thunk.edx \
 391         i686.get_pc_thunk.esi
 392
 393 FUNCTIONS.cc_kext.x86_64 := $(CCKEXT_X86_FUNCTIONS) \
 394         absvti2 \
 395         addvti3 \
 396         ashlti3 \
 397         ashrti3 \
 398         clzti2 \
 399         cmpti2 \
 400         ctzti2 \
 401         divti3 \
 402         ffsti2 \
 403         fixdfti \
 404         fixsfti \
 405         fixunsdfti \
 406         fixunssfti \
 407         fixunsxfti \
 408         fixxfti \
 409         floattidf \
 410         floattisf \
 411         floattixf \
 412         floatuntidf \
 413         floatuntisf \
 414         floatuntixf \
 415         lshrti3 \
 416         modti3 \
 417         multi3 \
 418         mulvti3 \
 419         negti2 \
 420         negvti2 \
 421         parityti2 \
 422         popcountti2 \
 423         subvti3 \
 424         ucmpti2 \
 425         udivmodti4 \
 426         udivti3 \
 427         umodti3
 428
 429 FUNCTIONS.cc_kext.x86_64h := $(FUNCTIONS.cc_kext.x86_64)
 430
 431 # FIXME: Currently, compiler-rt is missing implementations for a number of the
 432 # functions that need to go into libcc_kext.a. Filter them out for now.
 433 CCKEXT_MISSING_FUNCTIONS := \
 434         cmpdf2 cmpsf2 div0 \
 435         ffssi2 \
 436         udiv_w_sdiv unorddf2 unordsf2 bswapdi2 \
 437         bswapsi2 \
 438         gcc_bcmp \
 439         do_global_dtors \
 440         i686.get_pc_thunk.eax i686.get_pc_thunk.ebp i686.get_pc_thunk.ebx \
 441         i686.get_pc_thunk.ecx i686.get_pc_thunk.edi i686.get_pc_thunk.edx \
 442         i686.get_pc_thunk.esi \
 443         aeabi_cdcmpeq aeabi_cdrcmple aeabi_cfcmpeq aeabi_cfrcmple aeabi_dcmpeq \
 444         aeabi_dcmpge aeabi_dcmpgt aeabi_dcmple aeabi_dcmplt aeabi_drsub aeabi_fcmpeq \
 445         aeabi_fcmpge aeabi_fcmpgt aeabi_fcmple aeabi_fcmplt aeabi_frsub aeabi_idivmod \
 446         aeabi_uidivmod
 447
 448 FUNCTIONS.cc_kext_ios.armv7 := \
 449         $(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext_ios.armv7))
 450 FUNCTIONS.cc_kext_ios.armv7k := \
 451         $(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext_ios.armv7k))
 452 FUNCTIONS.cc_kext_ios.armv7s := \
 453         $(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext_ios.armv7s))
 454 FUNCTIONS.cc_kext_ios.arm64 := \
 455         $(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext_ios.arm64))
 456 FUNCTIONS.cc_kext.i386 := \
 457         $(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext.i386))
 458 FUNCTIONS.cc_kext.x86_64 := \
 459         $(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext.x86_64))
 460 FUNCTIONS.cc_kext.x86_64h := \
 461         $(filter-out $(CCKEXT_MISSING_FUNCTIONS),$(FUNCTIONS.cc_kext.x86_64h))
 462
 463 KERNEL_USE.cc_kext := 1
 464 KERNEL_USE.cc_kext_ios := 1
 465
 466 VISIBILITY_HIDDEN := 1
 467
 468 SHARED_LIBRARY_SUFFIX := dylib