1 //===--- Darwin.cpp - Darwin Tool and ToolChain Implementations -*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
12 #include "CommonArgs.h"
13 #include "clang/Basic/AlignedAllocation.h"
14 #include "clang/Basic/ObjCRuntime.h"
15 #include "clang/Driver/Compilation.h"
16 #include "clang/Driver/Driver.h"
17 #include "clang/Driver/DriverDiagnostic.h"
18 #include "clang/Driver/Options.h"
19 #include "clang/Driver/SanitizerArgs.h"
20 #include "llvm/ADT/StringSwitch.h"
21 #include "llvm/Option/ArgList.h"
22 #include "llvm/Support/Path.h"
23 #include "llvm/Support/ScopedPrinter.h"
24 #include "llvm/Support/TargetParser.h"
25 #include "llvm/Support/VirtualFileSystem.h"
26 #include <cstdlib> // ::getenv
28 using namespace clang::driver;
29 using namespace clang::driver::tools;
30 using namespace clang::driver::toolchains;
31 using namespace clang;
32 using namespace llvm::opt;
34 llvm::Triple::ArchType darwin::getArchTypeForMachOArchName(StringRef Str) {
35 // See arch(3) and llvm-gcc's driver-driver.c. We don't implement support for
36 // archs which Darwin doesn't use.
38 // The matching this routine does is fairly pointless, since it is neither the
39 // complete architecture list, nor a reasonable subset. The problem is that
40 // historically the driver driver accepts this and also ties its -march=
41 // handling to the architecture name, so we need to be careful before removing
44 // This code must be kept in sync with Clang's Darwin specific argument
47 return llvm::StringSwitch<llvm::Triple::ArchType>(Str)
48 .Cases("ppc", "ppc601", "ppc603", "ppc604", "ppc604e", llvm::Triple::ppc)
49 .Cases("ppc750", "ppc7400", "ppc7450", "ppc970", llvm::Triple::ppc)
50 .Case("ppc64", llvm::Triple::ppc64)
51 .Cases("i386", "i486", "i486SX", "i586", "i686", llvm::Triple::x86)
52 .Cases("pentium", "pentpro", "pentIIm3", "pentIIm5", "pentium4",
54 .Cases("x86_64", "x86_64h", llvm::Triple::x86_64)
55 // This is derived from the driver driver.
56 .Cases("arm", "armv4t", "armv5", "armv6", "armv6m", llvm::Triple::arm)
57 .Cases("armv7", "armv7em", "armv7k", "armv7m", llvm::Triple::arm)
58 .Cases("armv7s", "xscale", llvm::Triple::arm)
59 .Case("arm64", llvm::Triple::aarch64)
60 .Case("r600", llvm::Triple::r600)
61 .Case("amdgcn", llvm::Triple::amdgcn)
62 .Case("nvptx", llvm::Triple::nvptx)
63 .Case("nvptx64", llvm::Triple::nvptx64)
64 .Case("amdil", llvm::Triple::amdil)
65 .Case("spir", llvm::Triple::spir)
66 .Default(llvm::Triple::UnknownArch);
69 void darwin::setTripleTypeForMachOArchName(llvm::Triple &T, StringRef Str) {
70 const llvm::Triple::ArchType Arch = getArchTypeForMachOArchName(Str);
71 llvm::ARM::ArchKind ArchKind = llvm::ARM::parseArch(Str);
76 else if (ArchKind == llvm::ARM::ArchKind::ARMV6M ||
77 ArchKind == llvm::ARM::ArchKind::ARMV7M ||
78 ArchKind == llvm::ARM::ArchKind::ARMV7EM) {
79 T.setOS(llvm::Triple::UnknownOS);
80 T.setObjectFormat(llvm::Triple::MachO);
84 void darwin::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
85 const InputInfo &Output,
86 const InputInfoList &Inputs,
88 const char *LinkingOutput) const {
89 ArgStringList CmdArgs;
91 assert(Inputs.size() == 1 && "Unexpected number of inputs.");
92 const InputInfo &Input = Inputs[0];
94 // Determine the original source input.
95 const Action *SourceAction = &JA;
96 while (SourceAction->getKind() != Action::InputClass) {
97 assert(!SourceAction->getInputs().empty() && "unexpected root action!");
98 SourceAction = SourceAction->getInputs()[0];
101 // If -fno-integrated-as is used add -Q to the darwin assembler driver to make
102 // sure it runs its system assembler not clang's integrated assembler.
103 // Applicable to darwin11+ and Xcode 4+. darwin<10 lacked integrated-as.
104 // FIXME: at run-time detect assembler capabilities or rely on version
105 // information forwarded by -target-assembler-version.
106 if (Args.hasArg(options::OPT_fno_integrated_as)) {
107 const llvm::Triple &T(getToolChain().getTriple());
108 if (!(T.isMacOSX() && T.isMacOSXVersionLT(10, 7)))
109 CmdArgs.push_back("-Q");
112 // Forward -g, assuming we are dealing with an actual assembly file.
113 if (SourceAction->getType() == types::TY_Asm ||
114 SourceAction->getType() == types::TY_PP_Asm) {
115 if (Args.hasArg(options::OPT_gstabs))
116 CmdArgs.push_back("--gstabs");
117 else if (Args.hasArg(options::OPT_g_Group))
118 CmdArgs.push_back("-g");
121 // Derived from asm spec.
122 AddMachOArch(Args, CmdArgs);
124 // Use -force_cpusubtype_ALL on x86 by default.
125 if (getToolChain().getArch() == llvm::Triple::x86 ||
126 getToolChain().getArch() == llvm::Triple::x86_64 ||
127 Args.hasArg(options::OPT_force__cpusubtype__ALL))
128 CmdArgs.push_back("-force_cpusubtype_ALL");
130 if (getToolChain().getArch() != llvm::Triple::x86_64 &&
131 (((Args.hasArg(options::OPT_mkernel) ||
132 Args.hasArg(options::OPT_fapple_kext)) &&
133 getMachOToolChain().isKernelStatic()) ||
134 Args.hasArg(options::OPT_static)))
135 CmdArgs.push_back("-static");
137 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
139 assert(Output.isFilename() && "Unexpected lipo output.");
140 CmdArgs.push_back("-o");
141 CmdArgs.push_back(Output.getFilename());
143 assert(Input.isFilename() && "Invalid input.");
144 CmdArgs.push_back(Input.getFilename());
146 // asm_final spec is empty.
148 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
149 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
152 void darwin::MachOTool::anchor() {}
154 void darwin::MachOTool::AddMachOArch(const ArgList &Args,
155 ArgStringList &CmdArgs) const {
156 StringRef ArchName = getMachOToolChain().getMachOArchName(Args);
158 // Derived from darwin_arch spec.
159 CmdArgs.push_back("-arch");
160 CmdArgs.push_back(Args.MakeArgString(ArchName));
162 // FIXME: Is this needed anymore?
163 if (ArchName == "arm")
164 CmdArgs.push_back("-force_cpusubtype_ALL");
167 bool darwin::Linker::NeedsTempPath(const InputInfoList &Inputs) const {
168 // We only need to generate a temp path for LTO if we aren't compiling object
169 // files. When compiling source files, we run 'dsymutil' after linking. We
170 // don't run 'dsymutil' when compiling object files.
171 for (const auto &Input : Inputs)
172 if (Input.getType() != types::TY_Object)
178 /// Pass -no_deduplicate to ld64 under certain conditions:
180 /// - Either -O0 or -O1 is explicitly specified
181 /// - No -O option is specified *and* this is a compile+link (implicit -O0)
183 /// Also do *not* add -no_deduplicate when no -O option is specified and this
184 /// is just a link (we can't imply -O0)
185 static bool shouldLinkerNotDedup(bool IsLinkerOnlyAction, const ArgList &Args) {
186 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
187 if (A->getOption().matches(options::OPT_O0))
189 if (A->getOption().matches(options::OPT_O))
190 return llvm::StringSwitch<bool>(A->getValue())
193 return false; // OPT_Ofast & OPT_O4
196 if (!IsLinkerOnlyAction) // Implicit -O0 for compile+linker only.
201 void darwin::Linker::AddLinkArgs(Compilation &C, const ArgList &Args,
202 ArgStringList &CmdArgs,
203 const InputInfoList &Inputs) const {
204 const Driver &D = getToolChain().getDriver();
205 const toolchains::MachO &MachOTC = getMachOToolChain();
207 unsigned Version[5] = {0, 0, 0, 0, 0};
208 if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
209 if (!Driver::GetReleaseVersion(A->getValue(), Version))
210 D.Diag(diag::err_drv_invalid_version_number) << A->getAsString(Args);
213 // Newer linkers support -demangle. Pass it if supported and not disabled by
215 if (Version[0] >= 100 && !Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
216 CmdArgs.push_back("-demangle");
218 if (Args.hasArg(options::OPT_rdynamic) && Version[0] >= 137)
219 CmdArgs.push_back("-export_dynamic");
221 // If we are using App Extension restrictions, pass a flag to the linker
222 // telling it that the compiled code has been audited.
223 if (Args.hasFlag(options::OPT_fapplication_extension,
224 options::OPT_fno_application_extension, false))
225 CmdArgs.push_back("-application_extension");
227 if (D.isUsingLTO() && Version[0] >= 116 && NeedsTempPath(Inputs)) {
228 std::string TmpPathName;
229 if (D.getLTOMode() == LTOK_Full) {
230 // If we are using full LTO, then automatically create a temporary file
231 // path for the linker to use, so that it's lifetime will extend past a
232 // possible dsymutil step.
234 D.GetTemporaryPath("cc", types::getTypeTempSuffix(types::TY_Object));
235 } else if (D.getLTOMode() == LTOK_Thin)
236 // If we are using thin LTO, then create a directory instead.
237 TmpPathName = D.GetTemporaryDirectory("thinlto");
239 if (!TmpPathName.empty()) {
240 auto *TmpPath = C.getArgs().MakeArgString(TmpPathName);
241 C.addTempFile(TmpPath);
242 CmdArgs.push_back("-object_path_lto");
243 CmdArgs.push_back(TmpPath);
247 // Use -lto_library option to specify the libLTO.dylib path. Try to find
248 // it in clang installed libraries. ld64 will only look at this argument
249 // when it actually uses LTO, so libLTO.dylib only needs to exist at link
250 // time if ld64 decides that it needs to use LTO.
251 // Since this is passed unconditionally, ld64 will never look for libLTO.dylib
252 // next to it. That's ok since ld64 using a libLTO.dylib not matching the
253 // clang version won't work anyways.
254 if (Version[0] >= 133) {
255 // Search for libLTO in <InstalledDir>/../lib/libLTO.dylib
256 StringRef P = llvm::sys::path::parent_path(D.Dir);
257 SmallString<128> LibLTOPath(P);
258 llvm::sys::path::append(LibLTOPath, "lib");
259 llvm::sys::path::append(LibLTOPath, "libLTO.dylib");
260 CmdArgs.push_back("-lto_library");
261 CmdArgs.push_back(C.getArgs().MakeArgString(LibLTOPath));
264 // ld64 version 262 and above run the deduplicate pass by default.
265 if (Version[0] >= 262 && shouldLinkerNotDedup(C.getJobs().empty(), Args))
266 CmdArgs.push_back("-no_deduplicate");
268 // Derived from the "link" spec.
269 Args.AddAllArgs(CmdArgs, options::OPT_static);
270 if (!Args.hasArg(options::OPT_static))
271 CmdArgs.push_back("-dynamic");
272 if (Args.hasArg(options::OPT_fgnu_runtime)) {
273 // FIXME: gcc replaces -lobjc in forward args with -lobjc-gnu
274 // here. How do we wish to handle such things?
277 if (!Args.hasArg(options::OPT_dynamiclib)) {
278 AddMachOArch(Args, CmdArgs);
279 // FIXME: Why do this only on this path?
280 Args.AddLastArg(CmdArgs, options::OPT_force__cpusubtype__ALL);
282 Args.AddLastArg(CmdArgs, options::OPT_bundle);
283 Args.AddAllArgs(CmdArgs, options::OPT_bundle__loader);
284 Args.AddAllArgs(CmdArgs, options::OPT_client__name);
287 if ((A = Args.getLastArg(options::OPT_compatibility__version)) ||
288 (A = Args.getLastArg(options::OPT_current__version)) ||
289 (A = Args.getLastArg(options::OPT_install__name)))
290 D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
293 Args.AddLastArg(CmdArgs, options::OPT_force__flat__namespace);
294 Args.AddLastArg(CmdArgs, options::OPT_keep__private__externs);
295 Args.AddLastArg(CmdArgs, options::OPT_private__bundle);
297 CmdArgs.push_back("-dylib");
300 if ((A = Args.getLastArg(options::OPT_bundle)) ||
301 (A = Args.getLastArg(options::OPT_bundle__loader)) ||
302 (A = Args.getLastArg(options::OPT_client__name)) ||
303 (A = Args.getLastArg(options::OPT_force__flat__namespace)) ||
304 (A = Args.getLastArg(options::OPT_keep__private__externs)) ||
305 (A = Args.getLastArg(options::OPT_private__bundle)))
306 D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
309 Args.AddAllArgsTranslated(CmdArgs, options::OPT_compatibility__version,
310 "-dylib_compatibility_version");
311 Args.AddAllArgsTranslated(CmdArgs, options::OPT_current__version,
312 "-dylib_current_version");
314 AddMachOArch(Args, CmdArgs);
316 Args.AddAllArgsTranslated(CmdArgs, options::OPT_install__name,
317 "-dylib_install_name");
320 Args.AddLastArg(CmdArgs, options::OPT_all__load);
321 Args.AddAllArgs(CmdArgs, options::OPT_allowable__client);
322 Args.AddLastArg(CmdArgs, options::OPT_bind__at__load);
323 if (MachOTC.isTargetIOSBased())
324 Args.AddLastArg(CmdArgs, options::OPT_arch__errors__fatal);
325 Args.AddLastArg(CmdArgs, options::OPT_dead__strip);
326 Args.AddLastArg(CmdArgs, options::OPT_no__dead__strip__inits__and__terms);
327 Args.AddAllArgs(CmdArgs, options::OPT_dylib__file);
328 Args.AddLastArg(CmdArgs, options::OPT_dynamic);
329 Args.AddAllArgs(CmdArgs, options::OPT_exported__symbols__list);
330 Args.AddLastArg(CmdArgs, options::OPT_flat__namespace);
331 Args.AddAllArgs(CmdArgs, options::OPT_force__load);
332 Args.AddAllArgs(CmdArgs, options::OPT_headerpad__max__install__names);
333 Args.AddAllArgs(CmdArgs, options::OPT_image__base);
334 Args.AddAllArgs(CmdArgs, options::OPT_init);
336 // Add the deployment target.
337 MachOTC.addMinVersionArgs(Args, CmdArgs);
339 Args.AddLastArg(CmdArgs, options::OPT_nomultidefs);
340 Args.AddLastArg(CmdArgs, options::OPT_multi__module);
341 Args.AddLastArg(CmdArgs, options::OPT_single__module);
342 Args.AddAllArgs(CmdArgs, options::OPT_multiply__defined);
343 Args.AddAllArgs(CmdArgs, options::OPT_multiply__defined__unused);
346 Args.getLastArg(options::OPT_fpie, options::OPT_fPIE,
347 options::OPT_fno_pie, options::OPT_fno_PIE)) {
348 if (A->getOption().matches(options::OPT_fpie) ||
349 A->getOption().matches(options::OPT_fPIE))
350 CmdArgs.push_back("-pie");
352 CmdArgs.push_back("-no_pie");
355 // for embed-bitcode, use -bitcode_bundle in linker command
356 if (C.getDriver().embedBitcodeEnabled()) {
357 // Check if the toolchain supports bitcode build flow.
358 if (MachOTC.SupportsEmbeddedBitcode()) {
359 CmdArgs.push_back("-bitcode_bundle");
360 if (C.getDriver().embedBitcodeMarkerOnly() && Version[0] >= 278) {
361 CmdArgs.push_back("-bitcode_process_mode");
362 CmdArgs.push_back("marker");
365 D.Diag(diag::err_drv_bitcode_unsupported_on_toolchain);
368 Args.AddLastArg(CmdArgs, options::OPT_prebind);
369 Args.AddLastArg(CmdArgs, options::OPT_noprebind);
370 Args.AddLastArg(CmdArgs, options::OPT_nofixprebinding);
371 Args.AddLastArg(CmdArgs, options::OPT_prebind__all__twolevel__modules);
372 Args.AddLastArg(CmdArgs, options::OPT_read__only__relocs);
373 Args.AddAllArgs(CmdArgs, options::OPT_sectcreate);
374 Args.AddAllArgs(CmdArgs, options::OPT_sectorder);
375 Args.AddAllArgs(CmdArgs, options::OPT_seg1addr);
376 Args.AddAllArgs(CmdArgs, options::OPT_segprot);
377 Args.AddAllArgs(CmdArgs, options::OPT_segaddr);
378 Args.AddAllArgs(CmdArgs, options::OPT_segs__read__only__addr);
379 Args.AddAllArgs(CmdArgs, options::OPT_segs__read__write__addr);
380 Args.AddAllArgs(CmdArgs, options::OPT_seg__addr__table);
381 Args.AddAllArgs(CmdArgs, options::OPT_seg__addr__table__filename);
382 Args.AddAllArgs(CmdArgs, options::OPT_sub__library);
383 Args.AddAllArgs(CmdArgs, options::OPT_sub__umbrella);
385 // Give --sysroot= preference, over the Apple specific behavior to also use
386 // --isysroot as the syslibroot.
387 StringRef sysroot = C.getSysRoot();
389 CmdArgs.push_back("-syslibroot");
390 CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
391 } else if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
392 CmdArgs.push_back("-syslibroot");
393 CmdArgs.push_back(A->getValue());
396 Args.AddLastArg(CmdArgs, options::OPT_twolevel__namespace);
397 Args.AddLastArg(CmdArgs, options::OPT_twolevel__namespace__hints);
398 Args.AddAllArgs(CmdArgs, options::OPT_umbrella);
399 Args.AddAllArgs(CmdArgs, options::OPT_undefined);
400 Args.AddAllArgs(CmdArgs, options::OPT_unexported__symbols__list);
401 Args.AddAllArgs(CmdArgs, options::OPT_weak__reference__mismatches);
402 Args.AddLastArg(CmdArgs, options::OPT_X_Flag);
403 Args.AddAllArgs(CmdArgs, options::OPT_y);
404 Args.AddLastArg(CmdArgs, options::OPT_w);
405 Args.AddAllArgs(CmdArgs, options::OPT_pagezero__size);
406 Args.AddAllArgs(CmdArgs, options::OPT_segs__read__);
407 Args.AddLastArg(CmdArgs, options::OPT_seglinkedit);
408 Args.AddLastArg(CmdArgs, options::OPT_noseglinkedit);
409 Args.AddAllArgs(CmdArgs, options::OPT_sectalign);
410 Args.AddAllArgs(CmdArgs, options::OPT_sectobjectsymbols);
411 Args.AddAllArgs(CmdArgs, options::OPT_segcreate);
412 Args.AddLastArg(CmdArgs, options::OPT_whyload);
413 Args.AddLastArg(CmdArgs, options::OPT_whatsloaded);
414 Args.AddAllArgs(CmdArgs, options::OPT_dylinker__install__name);
415 Args.AddLastArg(CmdArgs, options::OPT_dylinker);
416 Args.AddLastArg(CmdArgs, options::OPT_Mach);
419 /// Determine whether we are linking the ObjC runtime.
420 static bool isObjCRuntimeLinked(const ArgList &Args) {
421 if (isObjCAutoRefCount(Args)) {
422 Args.ClaimAllArgs(options::OPT_fobjc_link_runtime);
425 return Args.hasArg(options::OPT_fobjc_link_runtime);
428 void darwin::Linker::ConstructJob(Compilation &C, const JobAction &JA,
429 const InputInfo &Output,
430 const InputInfoList &Inputs,
432 const char *LinkingOutput) const {
433 assert(Output.getType() == types::TY_Image && "Invalid linker output type.");
435 // If the number of arguments surpasses the system limits, we will encode the
436 // input files in a separate file, shortening the command line. To this end,
437 // build a list of input file names that can be passed via a file with the
438 // -filelist linker option.
439 llvm::opt::ArgStringList InputFileList;
441 // The logic here is derived from gcc's behavior; most of which
442 // comes from specs (starting with link_command). Consult gcc for
444 ArgStringList CmdArgs;
446 /// Hack(tm) to ignore linking errors when we are doing ARC migration.
447 if (Args.hasArg(options::OPT_ccc_arcmt_check,
448 options::OPT_ccc_arcmt_migrate)) {
449 for (const auto &Arg : Args)
452 Args.MakeArgString(getToolChain().GetProgramPath("touch"));
453 CmdArgs.push_back(Output.getFilename());
454 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, None));
458 // I'm not sure why this particular decomposition exists in gcc, but
459 // we follow suite for ease of comparison.
460 AddLinkArgs(C, Args, CmdArgs, Inputs);
462 // For LTO, pass the name of the optimization record file and other
463 // opt-remarks flags.
464 if (Args.hasFlag(options::OPT_fsave_optimization_record,
465 options::OPT_fno_save_optimization_record, false)) {
466 CmdArgs.push_back("-mllvm");
467 CmdArgs.push_back("-lto-pass-remarks-output");
468 CmdArgs.push_back("-mllvm");
471 F = Output.getFilename();
473 CmdArgs.push_back(Args.MakeArgString(F));
475 if (getLastProfileUseArg(Args)) {
476 CmdArgs.push_back("-mllvm");
477 CmdArgs.push_back("-lto-pass-remarks-with-hotness");
480 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
481 CmdArgs.push_back("-mllvm");
483 std::string("-lto-pass-remarks-hotness-threshold=") + A->getValue();
484 CmdArgs.push_back(Args.MakeArgString(Opt));
489 // Propagate the -moutline flag to the linker in LTO.
490 if (Args.hasFlag(options::OPT_moutline, options::OPT_mno_outline, false)) {
491 if (getMachOToolChain().getMachOArchName(Args) == "arm64") {
492 CmdArgs.push_back("-mllvm");
493 CmdArgs.push_back("-enable-machine-outliner");
495 // Outline from linkonceodr functions by default in LTO.
496 CmdArgs.push_back("-mllvm");
497 CmdArgs.push_back("-enable-linkonceodr-outlining");
501 // It seems that the 'e' option is completely ignored for dynamic executables
502 // (the default), and with static executables, the last one wins, as expected.
503 Args.AddAllArgs(CmdArgs, {options::OPT_d_Flag, options::OPT_s, options::OPT_t,
504 options::OPT_Z_Flag, options::OPT_u_Group,
505 options::OPT_e, options::OPT_r});
507 // Forward -ObjC when either -ObjC or -ObjC++ is used, to force loading
508 // members of static archive libraries which implement Objective-C classes or
510 if (Args.hasArg(options::OPT_ObjC) || Args.hasArg(options::OPT_ObjCXX))
511 CmdArgs.push_back("-ObjC");
513 CmdArgs.push_back("-o");
514 CmdArgs.push_back(Output.getFilename());
516 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles))
517 getMachOToolChain().addStartObjectFileArgs(Args, CmdArgs);
519 Args.AddAllArgs(CmdArgs, options::OPT_L);
521 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
522 // Build the input file for -filelist (list of linker input files) in case we
524 for (const auto &II : Inputs) {
525 if (!II.isFilename()) {
526 // This is a linker input argument.
527 // We cannot mix input arguments and file names in a -filelist input, thus
528 // we prematurely stop our list (remaining files shall be passed as
530 if (InputFileList.size() > 0)
536 InputFileList.push_back(II.getFilename());
539 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs))
540 addOpenMPRuntime(CmdArgs, getToolChain(), Args);
542 if (isObjCRuntimeLinked(Args) &&
543 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
544 // We use arclite library for both ARC and subscripting support.
545 getMachOToolChain().AddLinkARCArgs(Args, CmdArgs);
547 CmdArgs.push_back("-framework");
548 CmdArgs.push_back("Foundation");
550 CmdArgs.push_back("-lobjc");
554 CmdArgs.push_back("-arch_multiple");
555 CmdArgs.push_back("-final_output");
556 CmdArgs.push_back(LinkingOutput);
559 if (Args.hasArg(options::OPT_fnested_functions))
560 CmdArgs.push_back("-allow_stack_execute");
562 getMachOToolChain().addProfileRTLibs(Args, CmdArgs);
564 if (unsigned Parallelism =
565 getLTOParallelism(Args, getToolChain().getDriver())) {
566 CmdArgs.push_back("-mllvm");
567 CmdArgs.push_back(Args.MakeArgString("-threads=" + Twine(Parallelism)));
570 if (getToolChain().ShouldLinkCXXStdlib(Args))
571 getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
572 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
573 // link_ssp spec is empty.
575 // Let the tool chain choose which runtime library to link.
576 getMachOToolChain().AddLinkRuntimeLibArgs(Args, CmdArgs);
578 // No need to do anything for pthreads. Claim argument to avoid warning.
579 Args.ClaimAllArgs(options::OPT_pthread);
580 Args.ClaimAllArgs(options::OPT_pthreads);
583 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
584 // endfile_spec is empty.
587 Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
588 Args.AddAllArgs(CmdArgs, options::OPT_F);
590 // -iframework should be forwarded as -F.
591 for (const Arg *A : Args.filtered(options::OPT_iframework))
592 CmdArgs.push_back(Args.MakeArgString(std::string("-F") + A->getValue()));
594 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
595 if (Arg *A = Args.getLastArg(options::OPT_fveclib)) {
596 if (A->getValue() == StringRef("Accelerate")) {
597 CmdArgs.push_back("-framework");
598 CmdArgs.push_back("Accelerate");
603 const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
604 std::unique_ptr<Command> Cmd =
605 llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs);
606 Cmd->setInputFileList(std::move(InputFileList));
607 C.addCommand(std::move(Cmd));
610 void darwin::Lipo::ConstructJob(Compilation &C, const JobAction &JA,
611 const InputInfo &Output,
612 const InputInfoList &Inputs,
614 const char *LinkingOutput) const {
615 ArgStringList CmdArgs;
617 CmdArgs.push_back("-create");
618 assert(Output.isFilename() && "Unexpected lipo output.");
620 CmdArgs.push_back("-output");
621 CmdArgs.push_back(Output.getFilename());
623 for (const auto &II : Inputs) {
624 assert(II.isFilename() && "Unexpected lipo input.");
625 CmdArgs.push_back(II.getFilename());
628 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("lipo"));
629 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
632 void darwin::Dsymutil::ConstructJob(Compilation &C, const JobAction &JA,
633 const InputInfo &Output,
634 const InputInfoList &Inputs,
636 const char *LinkingOutput) const {
637 ArgStringList CmdArgs;
639 CmdArgs.push_back("-o");
640 CmdArgs.push_back(Output.getFilename());
642 assert(Inputs.size() == 1 && "Unable to handle multiple inputs.");
643 const InputInfo &Input = Inputs[0];
644 assert(Input.isFilename() && "Unexpected dsymutil input.");
645 CmdArgs.push_back(Input.getFilename());
648 Args.MakeArgString(getToolChain().GetProgramPath("dsymutil"));
649 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
652 void darwin::VerifyDebug::ConstructJob(Compilation &C, const JobAction &JA,
653 const InputInfo &Output,
654 const InputInfoList &Inputs,
656 const char *LinkingOutput) const {
657 ArgStringList CmdArgs;
658 CmdArgs.push_back("--verify");
659 CmdArgs.push_back("--debug-info");
660 CmdArgs.push_back("--eh-frame");
661 CmdArgs.push_back("--quiet");
663 assert(Inputs.size() == 1 && "Unable to handle multiple inputs.");
664 const InputInfo &Input = Inputs[0];
665 assert(Input.isFilename() && "Unexpected verify input");
667 // Grabbing the output of the earlier dsymutil run.
668 CmdArgs.push_back(Input.getFilename());
671 Args.MakeArgString(getToolChain().GetProgramPath("dwarfdump"));
672 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
675 MachO::MachO(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
676 : ToolChain(D, Triple, Args) {
677 // We expect 'as', 'ld', etc. to be adjacent to our install dir.
678 getProgramPaths().push_back(getDriver().getInstalledDir());
679 if (getDriver().getInstalledDir() != getDriver().Dir)
680 getProgramPaths().push_back(getDriver().Dir);
683 /// Darwin - Darwin tool chain for i386 and x86_64.
684 Darwin::Darwin(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
685 : MachO(D, Triple, Args), TargetInitialized(false),
686 CudaInstallation(D, Triple, Args) {}
688 types::ID MachO::LookupTypeForExtension(StringRef Ext) const {
689 types::ID Ty = types::lookupTypeForExtension(Ext);
691 // Darwin always preprocesses assembly files (unless -x is used explicitly).
692 if (Ty == types::TY_PP_Asm)
693 return types::TY_Asm;
698 bool MachO::HasNativeLLVMSupport() const { return true; }
700 ToolChain::CXXStdlibType Darwin::GetDefaultCXXStdlibType() const {
701 // Default to use libc++ on OS X 10.9+ and iOS 7+.
702 if ((isTargetMacOS() && !isMacosxVersionLT(10, 9)) ||
703 (isTargetIOSBased() && !isIPhoneOSVersionLT(7, 0)) ||
704 isTargetWatchOSBased())
705 return ToolChain::CST_Libcxx;
707 return ToolChain::CST_Libstdcxx;
710 /// Darwin provides an ARC runtime starting in MacOS X 10.7 and iOS 5.0.
711 ObjCRuntime Darwin::getDefaultObjCRuntime(bool isNonFragile) const {
712 if (isTargetWatchOSBased())
713 return ObjCRuntime(ObjCRuntime::WatchOS, TargetVersion);
714 if (isTargetIOSBased())
715 return ObjCRuntime(ObjCRuntime::iOS, TargetVersion);
717 return ObjCRuntime(ObjCRuntime::MacOSX, TargetVersion);
718 return ObjCRuntime(ObjCRuntime::FragileMacOSX, TargetVersion);
721 /// Darwin provides a blocks runtime starting in MacOS X 10.6 and iOS 3.2.
722 bool Darwin::hasBlocksRuntime() const {
723 if (isTargetWatchOSBased())
725 else if (isTargetIOSBased())
726 return !isIPhoneOSVersionLT(3, 2);
728 assert(isTargetMacOS() && "unexpected darwin target");
729 return !isMacosxVersionLT(10, 6);
733 void Darwin::AddCudaIncludeArgs(const ArgList &DriverArgs,
734 ArgStringList &CC1Args) const {
735 CudaInstallation.AddCudaIncludeArgs(DriverArgs, CC1Args);
738 // This is just a MachO name translation routine and there's no
739 // way to join this into ARMTargetParser without breaking all
740 // other assumptions. Maybe MachO should consider standardising
741 // their nomenclature.
742 static const char *ArmMachOArchName(StringRef Arch) {
743 return llvm::StringSwitch<const char *>(Arch)
744 .Case("armv6k", "armv6")
745 .Case("armv6m", "armv6m")
746 .Case("armv5tej", "armv5")
747 .Case("xscale", "xscale")
748 .Case("armv4t", "armv4t")
749 .Case("armv7", "armv7")
750 .Cases("armv7a", "armv7-a", "armv7")
751 .Cases("armv7r", "armv7-r", "armv7")
752 .Cases("armv7em", "armv7e-m", "armv7em")
753 .Cases("armv7k", "armv7-k", "armv7k")
754 .Cases("armv7m", "armv7-m", "armv7m")
755 .Cases("armv7s", "armv7-s", "armv7s")
759 static const char *ArmMachOArchNameCPU(StringRef CPU) {
760 llvm::ARM::ArchKind ArchKind = llvm::ARM::parseCPUArch(CPU);
761 if (ArchKind == llvm::ARM::ArchKind::INVALID)
763 StringRef Arch = llvm::ARM::getArchName(ArchKind);
765 // FIXME: Make sure this MachO triple mangling is really necessary.
766 // ARMv5* normalises to ARMv5.
767 if (Arch.startswith("armv5"))
768 Arch = Arch.substr(0, 5);
769 // ARMv6*, except ARMv6M, normalises to ARMv6.
770 else if (Arch.startswith("armv6") && !Arch.endswith("6m"))
771 Arch = Arch.substr(0, 5);
772 // ARMv7A normalises to ARMv7.
773 else if (Arch.endswith("v7a"))
774 Arch = Arch.substr(0, 5);
778 StringRef MachO::getMachOArchName(const ArgList &Args) const {
779 switch (getTriple().getArch()) {
781 return getDefaultUniversalArchName();
783 case llvm::Triple::aarch64:
786 case llvm::Triple::thumb:
787 case llvm::Triple::arm:
788 if (const Arg *A = Args.getLastArg(clang::driver::options::OPT_march_EQ))
789 if (const char *Arch = ArmMachOArchName(A->getValue()))
792 if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
793 if (const char *Arch = ArmMachOArchNameCPU(A->getValue()))
804 std::string Darwin::ComputeEffectiveClangTriple(const ArgList &Args,
805 types::ID InputType) const {
806 llvm::Triple Triple(ComputeLLVMTriple(Args, InputType));
808 // If the target isn't initialized (e.g., an unknown Darwin platform, return
809 // the default triple).
810 if (!isTargetInitialized())
811 return Triple.getTriple();
814 if (isTargetWatchOSBased())
816 else if (isTargetTvOSBased())
818 else if (isTargetIOSBased())
822 Str += getTargetVersion().getAsString();
823 Triple.setOSName(Str);
825 return Triple.getTriple();
828 Tool *MachO::getTool(Action::ActionClass AC) const {
830 case Action::LipoJobClass:
832 Lipo.reset(new tools::darwin::Lipo(*this));
834 case Action::DsymutilJobClass:
836 Dsymutil.reset(new tools::darwin::Dsymutil(*this));
837 return Dsymutil.get();
838 case Action::VerifyDebugInfoJobClass:
840 VerifyDebug.reset(new tools::darwin::VerifyDebug(*this));
841 return VerifyDebug.get();
843 return ToolChain::getTool(AC);
847 Tool *MachO::buildLinker() const { return new tools::darwin::Linker(*this); }
849 Tool *MachO::buildAssembler() const {
850 return new tools::darwin::Assembler(*this);
853 DarwinClang::DarwinClang(const Driver &D, const llvm::Triple &Triple,
855 : Darwin(D, Triple, Args) {}
857 void DarwinClang::addClangWarningOptions(ArgStringList &CC1Args) const {
858 // For modern targets, promote certain warnings to errors.
859 if (isTargetWatchOSBased() || getTriple().isArch64Bit()) {
860 // Always enable -Wdeprecated-objc-isa-usage and promote it
862 CC1Args.push_back("-Wdeprecated-objc-isa-usage");
863 CC1Args.push_back("-Werror=deprecated-objc-isa-usage");
865 // For iOS and watchOS, also error about implicit function declarations,
866 // as that can impact calling conventions.
867 if (!isTargetMacOS())
868 CC1Args.push_back("-Werror=implicit-function-declaration");
872 void DarwinClang::AddLinkARCArgs(const ArgList &Args,
873 ArgStringList &CmdArgs) const {
874 // Avoid linking compatibility stubs on i386 mac.
875 if (isTargetMacOS() && getArch() == llvm::Triple::x86)
878 ObjCRuntime runtime = getDefaultObjCRuntime(/*nonfragile*/ true);
880 if ((runtime.hasNativeARC() || !isObjCAutoRefCount(Args)) &&
881 runtime.hasSubscripting())
884 CmdArgs.push_back("-force_load");
885 SmallString<128> P(getDriver().ClangExecutable);
886 llvm::sys::path::remove_filename(P); // 'clang'
887 llvm::sys::path::remove_filename(P); // 'bin'
888 llvm::sys::path::append(P, "lib", "arc", "libarclite_");
889 // Mash in the platform.
890 if (isTargetWatchOSSimulator())
891 P += "watchsimulator";
892 else if (isTargetWatchOS())
894 else if (isTargetTvOSSimulator())
895 P += "appletvsimulator";
896 else if (isTargetTvOS())
898 else if (isTargetIOSSimulator())
899 P += "iphonesimulator";
900 else if (isTargetIPhoneOS())
906 CmdArgs.push_back(Args.MakeArgString(P));
909 unsigned DarwinClang::GetDefaultDwarfVersion() const {
910 // Default to use DWARF 2 on OS X 10.10 / iOS 8 and lower.
911 if ((isTargetMacOS() && isMacosxVersionLT(10, 11)) ||
912 (isTargetIOSBased() && isIPhoneOSVersionLT(9)))
917 void MachO::AddLinkRuntimeLib(const ArgList &Args, ArgStringList &CmdArgs,
918 StringRef Component, RuntimeLinkOptions Opts,
919 bool IsShared) const {
920 SmallString<64> DarwinLibName = StringRef("libclang_rt.");
921 // an Darwin the builtins compomnent is not in the library name
922 if (Component != "builtins") {
923 DarwinLibName += Component;
924 if (!(Opts & RLO_IsEmbedded))
925 DarwinLibName += "_";
926 DarwinLibName += getOSLibraryNameSuffix();
928 DarwinLibName += getOSLibraryNameSuffix(true);
930 DarwinLibName += IsShared ? "_dynamic.dylib" : ".a";
931 SmallString<128> Dir(getDriver().ResourceDir);
932 llvm::sys::path::append(
933 Dir, "lib", (Opts & RLO_IsEmbedded) ? "macho_embedded" : "darwin");
935 SmallString<128> P(Dir);
936 llvm::sys::path::append(P, DarwinLibName);
938 // For now, allow missing resource libraries to support developers who may
939 // not have compiler-rt checked out or integrated into their build (unless
940 // we explicitly force linking with this library).
941 if ((Opts & RLO_AlwaysLink) || getVFS().exists(P)) {
942 const char *LibArg = Args.MakeArgString(P);
943 if (Opts & RLO_FirstLink)
944 CmdArgs.insert(CmdArgs.begin(), LibArg);
946 CmdArgs.push_back(LibArg);
949 // Adding the rpaths might negatively interact when other rpaths are involved,
950 // so we should make sure we add the rpaths last, after all user-specified
951 // rpaths. This is currently true from this place, but we need to be
952 // careful if this function is ever called before user's rpaths are emitted.
953 if (Opts & RLO_AddRPath) {
954 assert(DarwinLibName.endswith(".dylib") && "must be a dynamic library");
956 // Add @executable_path to rpath to support having the dylib copied with
958 CmdArgs.push_back("-rpath");
959 CmdArgs.push_back("@executable_path");
961 // Add the path to the resource dir to rpath to support using the dylib
962 // from the default location without copying.
963 CmdArgs.push_back("-rpath");
964 CmdArgs.push_back(Args.MakeArgString(Dir));
968 StringRef Darwin::getPlatformFamily() const {
969 switch (TargetPlatform) {
970 case DarwinPlatformKind::MacOS:
972 case DarwinPlatformKind::IPhoneOS:
974 case DarwinPlatformKind::TvOS:
976 case DarwinPlatformKind::WatchOS:
979 llvm_unreachable("Unsupported platform");
982 StringRef Darwin::getSDKName(StringRef isysroot) {
983 // Assume SDK has path: SOME_PATH/SDKs/PlatformXX.YY.sdk
984 llvm::sys::path::const_iterator SDKDir;
985 auto BeginSDK = llvm::sys::path::begin(isysroot);
986 auto EndSDK = llvm::sys::path::end(isysroot);
987 for (auto IT = BeginSDK; IT != EndSDK; ++IT) {
989 if (SDK.endswith(".sdk"))
990 return SDK.slice(0, SDK.size() - 4);
995 StringRef Darwin::getOSLibraryNameSuffix(bool IgnoreSim) const {
996 switch (TargetPlatform) {
997 case DarwinPlatformKind::MacOS:
999 case DarwinPlatformKind::IPhoneOS:
1000 return TargetEnvironment == NativeEnvironment || IgnoreSim ? "ios"
1002 case DarwinPlatformKind::TvOS:
1003 return TargetEnvironment == NativeEnvironment || IgnoreSim ? "tvos"
1005 case DarwinPlatformKind::WatchOS:
1006 return TargetEnvironment == NativeEnvironment || IgnoreSim ? "watchos"
1009 llvm_unreachable("Unsupported platform");
1012 /// Check if the link command contains a symbol export directive.
1013 static bool hasExportSymbolDirective(const ArgList &Args) {
1014 for (Arg *A : Args) {
1015 if (A->getOption().matches(options::OPT_exported__symbols__list))
1017 if (!A->getOption().matches(options::OPT_Wl_COMMA) &&
1018 !A->getOption().matches(options::OPT_Xlinker))
1020 if (A->containsValue("-exported_symbols_list") ||
1021 A->containsValue("-exported_symbol"))
1027 /// Add an export directive for \p Symbol to the link command.
1028 static void addExportedSymbol(ArgStringList &CmdArgs, const char *Symbol) {
1029 CmdArgs.push_back("-exported_symbol");
1030 CmdArgs.push_back(Symbol);
1033 void Darwin::addProfileRTLibs(const ArgList &Args,
1034 ArgStringList &CmdArgs) const {
1035 if (!needsProfileRT(Args)) return;
1037 AddLinkRuntimeLib(Args, CmdArgs, "profile",
1038 RuntimeLinkOptions(RLO_AlwaysLink | RLO_FirstLink));
1040 // If we have a symbol export directive and we're linking in the profile
1041 // runtime, automatically export symbols necessary to implement some of the
1042 // runtime's functionality.
1043 if (hasExportSymbolDirective(Args)) {
1044 if (needsGCovInstrumentation(Args)) {
1045 addExportedSymbol(CmdArgs, "___gcov_flush");
1046 addExportedSymbol(CmdArgs, "_flush_fn_list");
1047 addExportedSymbol(CmdArgs, "_writeout_fn_list");
1049 addExportedSymbol(CmdArgs, "___llvm_profile_filename");
1050 addExportedSymbol(CmdArgs, "___llvm_profile_raw_version");
1051 addExportedSymbol(CmdArgs, "_lprofCurFilename");
1052 addExportedSymbol(CmdArgs, "_lprofMergeValueProfData");
1054 addExportedSymbol(CmdArgs, "_lprofDirMode");
1058 void DarwinClang::AddLinkSanitizerLibArgs(const ArgList &Args,
1059 ArgStringList &CmdArgs,
1060 StringRef Sanitizer,
1061 bool Shared) const {
1062 auto RLO = RuntimeLinkOptions(RLO_AlwaysLink | (Shared ? RLO_AddRPath : 0U));
1063 AddLinkRuntimeLib(Args, CmdArgs, Sanitizer, RLO, Shared);
1066 ToolChain::RuntimeLibType DarwinClang::GetRuntimeLibType(
1067 const ArgList &Args) const {
1068 if (Arg* A = Args.getLastArg(options::OPT_rtlib_EQ)) {
1069 StringRef Value = A->getValue();
1070 if (Value != "compiler-rt")
1071 getDriver().Diag(clang::diag::err_drv_unsupported_rtlib_for_platform)
1072 << Value << "darwin";
1075 return ToolChain::RLT_CompilerRT;
1078 void DarwinClang::AddLinkRuntimeLibArgs(const ArgList &Args,
1079 ArgStringList &CmdArgs) const {
1080 // Call once to ensure diagnostic is printed if wrong value was specified
1081 GetRuntimeLibType(Args);
1083 // Darwin doesn't support real static executables, don't link any runtime
1084 // libraries with -static.
1085 if (Args.hasArg(options::OPT_static) ||
1086 Args.hasArg(options::OPT_fapple_kext) ||
1087 Args.hasArg(options::OPT_mkernel))
1090 // Reject -static-libgcc for now, we can deal with this when and if someone
1091 // cares. This is useful in situations where someone wants to statically link
1092 // something like libstdc++, and needs its runtime support routines.
1093 if (const Arg *A = Args.getLastArg(options::OPT_static_libgcc)) {
1094 getDriver().Diag(diag::err_drv_unsupported_opt) << A->getAsString(Args);
1098 const SanitizerArgs &Sanitize = getSanitizerArgs();
1099 if (Sanitize.needsAsanRt())
1100 AddLinkSanitizerLibArgs(Args, CmdArgs, "asan");
1101 if (Sanitize.needsLsanRt())
1102 AddLinkSanitizerLibArgs(Args, CmdArgs, "lsan");
1103 if (Sanitize.needsUbsanRt())
1104 AddLinkSanitizerLibArgs(Args, CmdArgs,
1105 Sanitize.requiresMinimalRuntime() ? "ubsan_minimal"
1107 Sanitize.needsSharedRt());
1108 if (Sanitize.needsTsanRt())
1109 AddLinkSanitizerLibArgs(Args, CmdArgs, "tsan");
1110 if (Sanitize.needsFuzzer() && !Args.hasArg(options::OPT_dynamiclib)) {
1111 AddLinkSanitizerLibArgs(Args, CmdArgs, "fuzzer", /*shared=*/false);
1113 // Libfuzzer is written in C++ and requires libcxx.
1114 AddCXXStdlibLibArgs(Args, CmdArgs);
1116 if (Sanitize.needsStatsRt()) {
1117 AddLinkRuntimeLib(Args, CmdArgs, "stats_client", RLO_AlwaysLink);
1118 AddLinkSanitizerLibArgs(Args, CmdArgs, "stats");
1120 if (Sanitize.needsEsanRt())
1121 AddLinkSanitizerLibArgs(Args, CmdArgs, "esan");
1123 const XRayArgs &XRay = getXRayArgs();
1124 if (XRay.needsXRayRt()) {
1125 AddLinkRuntimeLib(Args, CmdArgs, "xray");
1126 AddLinkRuntimeLib(Args, CmdArgs, "xray-basic");
1127 AddLinkRuntimeLib(Args, CmdArgs, "xray-fdr");
1130 // Otherwise link libSystem, then the dynamic runtime library, and finally any
1131 // target specific static runtime library.
1132 CmdArgs.push_back("-lSystem");
1134 // Select the dynamic runtime library and the target specific static library.
1135 if (isTargetIOSBased()) {
1136 // If we are compiling as iOS / simulator, don't attempt to link libgcc_s.1,
1137 // it never went into the SDK.
1138 // Linking against libgcc_s.1 isn't needed for iOS 5.0+
1139 if (isIPhoneOSVersionLT(5, 0) && !isTargetIOSSimulator() &&
1140 getTriple().getArch() != llvm::Triple::aarch64)
1141 CmdArgs.push_back("-lgcc_s.1");
1143 AddLinkRuntimeLib(Args, CmdArgs, "builtins");
1146 /// Returns the most appropriate macOS target version for the current process.
1148 /// If the macOS SDK version is the same or earlier than the system version,
1149 /// then the SDK version is returned. Otherwise the system version is returned.
1150 static std::string getSystemOrSDKMacOSVersion(StringRef MacOSSDKVersion) {
1151 unsigned Major, Minor, Micro;
1152 llvm::Triple SystemTriple(llvm::sys::getProcessTriple());
1153 if (!SystemTriple.isMacOSX())
1154 return MacOSSDKVersion;
1155 SystemTriple.getMacOSXVersion(Major, Minor, Micro);
1156 VersionTuple SystemVersion(Major, Minor, Micro);
1158 if (!Driver::GetReleaseVersion(MacOSSDKVersion, Major, Minor, Micro,
1160 return MacOSSDKVersion;
1161 VersionTuple SDKVersion(Major, Minor, Micro);
1162 if (SDKVersion > SystemVersion)
1163 return SystemVersion.getAsString();
1164 return MacOSSDKVersion;
1169 /// The Darwin OS that was selected or inferred from arguments / environment.
1170 struct DarwinPlatform {
1172 /// The OS was specified using the -target argument.
1174 /// The OS was specified using the -m<os>-version-min argument.
1176 /// The OS was specified using the OS_DEPLOYMENT_TARGET environment.
1177 DeploymentTargetEnv,
1178 /// The OS was inferred from the SDK.
1180 /// The OS was inferred from the -arch.
1184 using DarwinPlatformKind = Darwin::DarwinPlatformKind;
1185 using DarwinEnvironmentKind = Darwin::DarwinEnvironmentKind;
1187 DarwinPlatformKind getPlatform() const { return Platform; }
1189 DarwinEnvironmentKind getEnvironment() const { return Environment; }
1191 void setEnvironment(DarwinEnvironmentKind Kind) {
1193 InferSimulatorFromArch = false;
1196 StringRef getOSVersion() const {
1197 if (Kind == OSVersionArg)
1198 return Argument->getValue();
1202 void setOSVersion(StringRef S) {
1203 assert(Kind == TargetArg && "Unexpected kind!");
1207 bool hasOSVersion() const { return HasOSVersion; }
1209 /// Returns true if the target OS was explicitly specified.
1210 bool isExplicitlySpecified() const { return Kind <= DeploymentTargetEnv; }
1212 /// Returns true if the simulator environment can be inferred from the arch.
1213 bool canInferSimulatorFromArch() const { return InferSimulatorFromArch; }
1215 /// Adds the -m<os>-version-min argument to the compiler invocation.
1216 void addOSVersionMinArgument(DerivedArgList &Args, const OptTable &Opts) {
1219 assert(Kind != TargetArg && Kind != OSVersionArg && "Invalid kind");
1222 case DarwinPlatformKind::MacOS:
1223 Opt = options::OPT_mmacosx_version_min_EQ;
1225 case DarwinPlatformKind::IPhoneOS:
1226 Opt = options::OPT_miphoneos_version_min_EQ;
1228 case DarwinPlatformKind::TvOS:
1229 Opt = options::OPT_mtvos_version_min_EQ;
1231 case DarwinPlatformKind::WatchOS:
1232 Opt = options::OPT_mwatchos_version_min_EQ;
1235 Argument = Args.MakeJoinedArg(nullptr, Opts.getOption(Opt), OSVersion);
1236 Args.append(Argument);
1239 /// Returns the OS version with the argument / environment variable that
1241 std::string getAsString(DerivedArgList &Args, const OptTable &Opts) {
1245 case InferredFromSDK:
1246 case InferredFromArch:
1247 assert(Argument && "OS version argument not yet inferred");
1248 return Argument->getAsString(Args);
1249 case DeploymentTargetEnv:
1250 return (llvm::Twine(EnvVarName) + "=" + OSVersion).str();
1252 llvm_unreachable("Unsupported Darwin Source Kind");
1255 static DarwinPlatform createFromTarget(const llvm::Triple &TT,
1256 StringRef OSVersion, Arg *A) {
1257 DarwinPlatform Result(TargetArg, getPlatformFromOS(TT.getOS()), OSVersion,
1259 switch (TT.getEnvironment()) {
1260 case llvm::Triple::Simulator:
1261 Result.Environment = DarwinEnvironmentKind::Simulator;
1266 unsigned Major, Minor, Micro;
1267 TT.getOSVersion(Major, Minor, Micro);
1269 Result.HasOSVersion = false;
1272 static DarwinPlatform createOSVersionArg(DarwinPlatformKind Platform,
1274 return DarwinPlatform(OSVersionArg, Platform, A);
1276 static DarwinPlatform createDeploymentTargetEnv(DarwinPlatformKind Platform,
1277 StringRef EnvVarName,
1279 DarwinPlatform Result(DeploymentTargetEnv, Platform, Value);
1280 Result.EnvVarName = EnvVarName;
1283 static DarwinPlatform createFromSDK(DarwinPlatformKind Platform,
1285 bool IsSimulator = false) {
1286 DarwinPlatform Result(InferredFromSDK, Platform, Value);
1288 Result.Environment = DarwinEnvironmentKind::Simulator;
1289 Result.InferSimulatorFromArch = false;
1292 static DarwinPlatform createFromArch(llvm::Triple::OSType OS,
1294 return DarwinPlatform(InferredFromArch, getPlatformFromOS(OS), Value);
1297 /// Constructs an inferred SDKInfo value based on the version inferred from
1298 /// the SDK path itself. Only works for values that were created by inferring
1299 /// the platform from the SDKPath.
1300 DarwinSDKInfo inferSDKInfo() {
1301 assert(Kind == InferredFromSDK && "can infer SDK info only");
1302 llvm::VersionTuple Version;
1303 bool IsValid = !Version.tryParse(OSVersion);
1305 assert(IsValid && "invalid SDK version");
1306 return DarwinSDKInfo(Version);
1310 DarwinPlatform(SourceKind Kind, DarwinPlatformKind Platform, Arg *Argument)
1311 : Kind(Kind), Platform(Platform), Argument(Argument) {}
1312 DarwinPlatform(SourceKind Kind, DarwinPlatformKind Platform, StringRef Value,
1313 Arg *Argument = nullptr)
1314 : Kind(Kind), Platform(Platform), OSVersion(Value), Argument(Argument) {}
1316 static DarwinPlatformKind getPlatformFromOS(llvm::Triple::OSType OS) {
1318 case llvm::Triple::Darwin:
1319 case llvm::Triple::MacOSX:
1320 return DarwinPlatformKind::MacOS;
1321 case llvm::Triple::IOS:
1322 return DarwinPlatformKind::IPhoneOS;
1323 case llvm::Triple::TvOS:
1324 return DarwinPlatformKind::TvOS;
1325 case llvm::Triple::WatchOS:
1326 return DarwinPlatformKind::WatchOS;
1328 llvm_unreachable("Unable to infer Darwin variant");
1333 DarwinPlatformKind Platform;
1334 DarwinEnvironmentKind Environment = DarwinEnvironmentKind::NativeEnvironment;
1335 std::string OSVersion;
1336 bool HasOSVersion = true, InferSimulatorFromArch = true;
1338 StringRef EnvVarName;
1341 /// Returns the deployment target that's specified using the -m<os>-version-min
1343 Optional<DarwinPlatform>
1344 getDeploymentTargetFromOSVersionArg(DerivedArgList &Args,
1345 const Driver &TheDriver) {
1346 Arg *OSXVersion = Args.getLastArg(options::OPT_mmacosx_version_min_EQ);
1347 Arg *iOSVersion = Args.getLastArg(options::OPT_miphoneos_version_min_EQ,
1348 options::OPT_mios_simulator_version_min_EQ);
1350 Args.getLastArg(options::OPT_mtvos_version_min_EQ,
1351 options::OPT_mtvos_simulator_version_min_EQ);
1352 Arg *WatchOSVersion =
1353 Args.getLastArg(options::OPT_mwatchos_version_min_EQ,
1354 options::OPT_mwatchos_simulator_version_min_EQ);
1356 if (iOSVersion || TvOSVersion || WatchOSVersion) {
1357 TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
1358 << OSXVersion->getAsString(Args)
1359 << (iOSVersion ? iOSVersion
1360 : TvOSVersion ? TvOSVersion : WatchOSVersion)
1361 ->getAsString(Args);
1363 return DarwinPlatform::createOSVersionArg(Darwin::MacOS, OSXVersion);
1364 } else if (iOSVersion) {
1365 if (TvOSVersion || WatchOSVersion) {
1366 TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
1367 << iOSVersion->getAsString(Args)
1368 << (TvOSVersion ? TvOSVersion : WatchOSVersion)->getAsString(Args);
1370 return DarwinPlatform::createOSVersionArg(Darwin::IPhoneOS, iOSVersion);
1371 } else if (TvOSVersion) {
1372 if (WatchOSVersion) {
1373 TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
1374 << TvOSVersion->getAsString(Args)
1375 << WatchOSVersion->getAsString(Args);
1377 return DarwinPlatform::createOSVersionArg(Darwin::TvOS, TvOSVersion);
1378 } else if (WatchOSVersion)
1379 return DarwinPlatform::createOSVersionArg(Darwin::WatchOS, WatchOSVersion);
1383 /// Returns the deployment target that's specified using the
1384 /// OS_DEPLOYMENT_TARGET environment variable.
1385 Optional<DarwinPlatform>
1386 getDeploymentTargetFromEnvironmentVariables(const Driver &TheDriver,
1387 const llvm::Triple &Triple) {
1388 std::string Targets[Darwin::LastDarwinPlatform + 1];
1389 const char *EnvVars[] = {
1390 "MACOSX_DEPLOYMENT_TARGET",
1391 "IPHONEOS_DEPLOYMENT_TARGET",
1392 "TVOS_DEPLOYMENT_TARGET",
1393 "WATCHOS_DEPLOYMENT_TARGET",
1395 static_assert(llvm::array_lengthof(EnvVars) == Darwin::LastDarwinPlatform + 1,
1396 "Missing platform");
1397 for (const auto &I : llvm::enumerate(llvm::makeArrayRef(EnvVars))) {
1398 if (char *Env = ::getenv(I.value()))
1399 Targets[I.index()] = Env;
1402 // Do not allow conflicts with the watchOS target.
1403 if (!Targets[Darwin::WatchOS].empty() &&
1404 (!Targets[Darwin::IPhoneOS].empty() || !Targets[Darwin::TvOS].empty())) {
1405 TheDriver.Diag(diag::err_drv_conflicting_deployment_targets)
1406 << "WATCHOS_DEPLOYMENT_TARGET"
1407 << (!Targets[Darwin::IPhoneOS].empty() ? "IPHONEOS_DEPLOYMENT_TARGET"
1408 : "TVOS_DEPLOYMENT_TARGET");
1411 // Do not allow conflicts with the tvOS target.
1412 if (!Targets[Darwin::TvOS].empty() && !Targets[Darwin::IPhoneOS].empty()) {
1413 TheDriver.Diag(diag::err_drv_conflicting_deployment_targets)
1414 << "TVOS_DEPLOYMENT_TARGET"
1415 << "IPHONEOS_DEPLOYMENT_TARGET";
1418 // Allow conflicts among OSX and iOS for historical reasons, but choose the
1419 // default platform.
1420 if (!Targets[Darwin::MacOS].empty() &&
1421 (!Targets[Darwin::IPhoneOS].empty() ||
1422 !Targets[Darwin::WatchOS].empty() || !Targets[Darwin::TvOS].empty())) {
1423 if (Triple.getArch() == llvm::Triple::arm ||
1424 Triple.getArch() == llvm::Triple::aarch64 ||
1425 Triple.getArch() == llvm::Triple::thumb)
1426 Targets[Darwin::MacOS] = "";
1428 Targets[Darwin::IPhoneOS] = Targets[Darwin::WatchOS] =
1429 Targets[Darwin::TvOS] = "";
1432 for (const auto &Target : llvm::enumerate(llvm::makeArrayRef(Targets))) {
1433 if (!Target.value().empty())
1434 return DarwinPlatform::createDeploymentTargetEnv(
1435 (Darwin::DarwinPlatformKind)Target.index(), EnvVars[Target.index()],
1441 /// Tries to infer the deployment target from the SDK specified by -isysroot
1442 /// (or SDKROOT). Uses the version specified in the SDKSettings.json file if
1444 Optional<DarwinPlatform>
1445 inferDeploymentTargetFromSDK(DerivedArgList &Args,
1446 const Optional<DarwinSDKInfo> &SDKInfo) {
1447 const Arg *A = Args.getLastArg(options::OPT_isysroot);
1450 StringRef isysroot = A->getValue();
1451 StringRef SDK = Darwin::getSDKName(isysroot);
1455 std::string Version;
1457 // Get the version from the SDKSettings.json if it's available.
1458 Version = SDKInfo->getVersion().getAsString();
1460 // Slice the version number out.
1461 // Version number is between the first and the last number.
1462 size_t StartVer = SDK.find_first_of("0123456789");
1463 size_t EndVer = SDK.find_last_of("0123456789");
1464 if (StartVer != StringRef::npos && EndVer > StartVer)
1465 Version = SDK.slice(StartVer, EndVer + 1);
1467 if (Version.empty())
1470 if (SDK.startswith("iPhoneOS") || SDK.startswith("iPhoneSimulator"))
1471 return DarwinPlatform::createFromSDK(
1472 Darwin::IPhoneOS, Version,
1473 /*IsSimulator=*/SDK.startswith("iPhoneSimulator"));
1474 else if (SDK.startswith("MacOSX"))
1475 return DarwinPlatform::createFromSDK(Darwin::MacOS,
1476 getSystemOrSDKMacOSVersion(Version));
1477 else if (SDK.startswith("WatchOS") || SDK.startswith("WatchSimulator"))
1478 return DarwinPlatform::createFromSDK(
1479 Darwin::WatchOS, Version,
1480 /*IsSimulator=*/SDK.startswith("WatchSimulator"));
1481 else if (SDK.startswith("AppleTVOS") || SDK.startswith("AppleTVSimulator"))
1482 return DarwinPlatform::createFromSDK(
1483 Darwin::TvOS, Version,
1484 /*IsSimulator=*/SDK.startswith("AppleTVSimulator"));
1488 std::string getOSVersion(llvm::Triple::OSType OS, const llvm::Triple &Triple,
1489 const Driver &TheDriver) {
1490 unsigned Major, Minor, Micro;
1491 llvm::Triple SystemTriple(llvm::sys::getProcessTriple());
1493 case llvm::Triple::Darwin:
1494 case llvm::Triple::MacOSX:
1495 // If there is no version specified on triple, and both host and target are
1496 // macos, use the host triple to infer OS version.
1497 if (Triple.isMacOSX() && SystemTriple.isMacOSX() &&
1498 !Triple.getOSMajorVersion())
1499 SystemTriple.getMacOSXVersion(Major, Minor, Micro);
1500 else if (!Triple.getMacOSXVersion(Major, Minor, Micro))
1501 TheDriver.Diag(diag::err_drv_invalid_darwin_version)
1502 << Triple.getOSName();
1504 case llvm::Triple::IOS:
1505 Triple.getiOSVersion(Major, Minor, Micro);
1507 case llvm::Triple::TvOS:
1508 Triple.getOSVersion(Major, Minor, Micro);
1510 case llvm::Triple::WatchOS:
1511 Triple.getWatchOSVersion(Major, Minor, Micro);
1514 llvm_unreachable("Unexpected OS type");
1518 std::string OSVersion;
1519 llvm::raw_string_ostream(OSVersion) << Major << '.' << Minor << '.' << Micro;
1523 /// Tries to infer the target OS from the -arch.
1524 Optional<DarwinPlatform>
1525 inferDeploymentTargetFromArch(DerivedArgList &Args, const Darwin &Toolchain,
1526 const llvm::Triple &Triple,
1527 const Driver &TheDriver) {
1528 llvm::Triple::OSType OSTy = llvm::Triple::UnknownOS;
1530 StringRef MachOArchName = Toolchain.getMachOArchName(Args);
1531 if (MachOArchName == "armv7" || MachOArchName == "armv7s" ||
1532 MachOArchName == "arm64")
1533 OSTy = llvm::Triple::IOS;
1534 else if (MachOArchName == "armv7k")
1535 OSTy = llvm::Triple::WatchOS;
1536 else if (MachOArchName != "armv6m" && MachOArchName != "armv7m" &&
1537 MachOArchName != "armv7em")
1538 OSTy = llvm::Triple::MacOSX;
1540 if (OSTy == llvm::Triple::UnknownOS)
1542 return DarwinPlatform::createFromArch(OSTy,
1543 getOSVersion(OSTy, Triple, TheDriver));
1546 /// Returns the deployment target that's specified using the -target option.
1547 Optional<DarwinPlatform> getDeploymentTargetFromTargetArg(
1548 DerivedArgList &Args, const llvm::Triple &Triple, const Driver &TheDriver) {
1549 if (!Args.hasArg(options::OPT_target))
1551 if (Triple.getOS() == llvm::Triple::Darwin ||
1552 Triple.getOS() == llvm::Triple::UnknownOS)
1554 std::string OSVersion = getOSVersion(Triple.getOS(), Triple, TheDriver);
1555 return DarwinPlatform::createFromTarget(Triple, OSVersion,
1556 Args.getLastArg(options::OPT_target));
1559 Optional<DarwinSDKInfo> parseSDKSettings(llvm::vfs::FileSystem &VFS,
1560 const ArgList &Args,
1561 const Driver &TheDriver) {
1562 const Arg *A = Args.getLastArg(options::OPT_isysroot);
1565 StringRef isysroot = A->getValue();
1566 auto SDKInfoOrErr = driver::parseDarwinSDKInfo(VFS, isysroot);
1567 if (!SDKInfoOrErr) {
1568 llvm::consumeError(SDKInfoOrErr.takeError());
1569 TheDriver.Diag(diag::warn_drv_darwin_sdk_invalid_settings);
1572 return *SDKInfoOrErr;
1577 void Darwin::AddDeploymentTarget(DerivedArgList &Args) const {
1578 const OptTable &Opts = getDriver().getOpts();
1580 // Support allowing the SDKROOT environment variable used by xcrun and other
1581 // Xcode tools to define the default sysroot, by making it the default for
1583 if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
1584 // Warn if the path does not exist.
1585 if (!getVFS().exists(A->getValue()))
1586 getDriver().Diag(clang::diag::warn_missing_sysroot) << A->getValue();
1588 if (char *env = ::getenv("SDKROOT")) {
1589 // We only use this value as the default if it is an absolute path,
1590 // exists, and it is not the root path.
1591 if (llvm::sys::path::is_absolute(env) && getVFS().exists(env) &&
1592 StringRef(env) != "/") {
1593 Args.append(Args.MakeSeparateArg(
1594 nullptr, Opts.getOption(options::OPT_isysroot), env));
1599 // Read the SDKSettings.json file for more information, like the SDK version
1600 // that we can pass down to the compiler.
1601 SDKInfo = parseSDKSettings(getVFS(), Args, getDriver());
1603 // The OS and the version can be specified using the -target argument.
1604 Optional<DarwinPlatform> OSTarget =
1605 getDeploymentTargetFromTargetArg(Args, getTriple(), getDriver());
1607 Optional<DarwinPlatform> OSVersionArgTarget =
1608 getDeploymentTargetFromOSVersionArg(Args, getDriver());
1609 if (OSVersionArgTarget) {
1610 unsigned TargetMajor, TargetMinor, TargetMicro;
1612 unsigned ArgMajor, ArgMinor, ArgMicro;
1614 if (OSTarget->getPlatform() != OSVersionArgTarget->getPlatform() ||
1615 (Driver::GetReleaseVersion(OSTarget->getOSVersion(), TargetMajor,
1616 TargetMinor, TargetMicro, TargetExtra) &&
1617 Driver::GetReleaseVersion(OSVersionArgTarget->getOSVersion(),
1618 ArgMajor, ArgMinor, ArgMicro, ArgExtra) &&
1619 (VersionTuple(TargetMajor, TargetMinor, TargetMicro) !=
1620 VersionTuple(ArgMajor, ArgMinor, ArgMicro) ||
1621 TargetExtra != ArgExtra))) {
1622 // Select the OS version from the -m<os>-version-min argument when
1623 // the -target does not include an OS version.
1624 if (OSTarget->getPlatform() == OSVersionArgTarget->getPlatform() &&
1625 !OSTarget->hasOSVersion()) {
1626 OSTarget->setOSVersion(OSVersionArgTarget->getOSVersion());
1628 // Warn about -m<os>-version-min that doesn't match the OS version
1629 // that's specified in the target.
1630 std::string OSVersionArg =
1631 OSVersionArgTarget->getAsString(Args, Opts);
1632 std::string TargetArg = OSTarget->getAsString(Args, Opts);
1633 getDriver().Diag(clang::diag::warn_drv_overriding_flag_option)
1634 << OSVersionArg << TargetArg;
1639 // The OS target can be specified using the -m<os>version-min argument.
1640 OSTarget = getDeploymentTargetFromOSVersionArg(Args, getDriver());
1641 // If no deployment target was specified on the command line, check for
1642 // environment defines.
1645 getDeploymentTargetFromEnvironmentVariables(getDriver(), getTriple());
1647 // Don't infer simulator from the arch when the SDK is also specified.
1648 Optional<DarwinPlatform> SDKTarget =
1649 inferDeploymentTargetFromSDK(Args, SDKInfo);
1651 OSTarget->setEnvironment(SDKTarget->getEnvironment());
1654 // If there is no command-line argument to specify the Target version and
1655 // no environment variable defined, see if we can set the default based
1656 // on -isysroot using SDKSettings.json if it exists.
1658 OSTarget = inferDeploymentTargetFromSDK(Args, SDKInfo);
1659 /// If the target was successfully constructed from the SDK path, try to
1660 /// infer the SDK info if the SDK doesn't have it.
1661 if (OSTarget && !SDKInfo)
1662 SDKInfo = OSTarget->inferSDKInfo();
1664 // If no OS targets have been specified, try to guess platform from -target
1665 // or arch name and compute the version from the triple.
1668 inferDeploymentTargetFromArch(Args, *this, getTriple(), getDriver());
1671 assert(OSTarget && "Unable to infer Darwin variant");
1672 OSTarget->addOSVersionMinArgument(Args, Opts);
1673 DarwinPlatformKind Platform = OSTarget->getPlatform();
1675 unsigned Major, Minor, Micro;
1677 // Set the tool chain target information.
1678 if (Platform == MacOS) {
1679 if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1681 HadExtra || Major != 10 || Minor >= 100 || Micro >= 100)
1682 getDriver().Diag(diag::err_drv_invalid_version_number)
1683 << OSTarget->getAsString(Args, Opts);
1684 } else if (Platform == IPhoneOS) {
1685 if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1687 HadExtra || Major >= 100 || Minor >= 100 || Micro >= 100)
1688 getDriver().Diag(diag::err_drv_invalid_version_number)
1689 << OSTarget->getAsString(Args, Opts);
1691 // For 32-bit targets, the deployment target for iOS has to be earlier than
1693 if (getTriple().isArch32Bit() && Major >= 11) {
1694 // If the deployment target is explicitly specified, print a diagnostic.
1695 if (OSTarget->isExplicitlySpecified()) {
1696 getDriver().Diag(diag::warn_invalid_ios_deployment_target)
1697 << OSTarget->getAsString(Args, Opts);
1698 // Otherwise, set it to 10.99.99.
1705 } else if (Platform == TvOS) {
1706 if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1708 HadExtra || Major >= 100 || Minor >= 100 || Micro >= 100)
1709 getDriver().Diag(diag::err_drv_invalid_version_number)
1710 << OSTarget->getAsString(Args, Opts);
1711 } else if (Platform == WatchOS) {
1712 if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1714 HadExtra || Major >= 10 || Minor >= 100 || Micro >= 100)
1715 getDriver().Diag(diag::err_drv_invalid_version_number)
1716 << OSTarget->getAsString(Args, Opts);
1718 llvm_unreachable("unknown kind of Darwin platform");
1720 DarwinEnvironmentKind Environment = OSTarget->getEnvironment();
1721 // Recognize iOS targets with an x86 architecture as the iOS simulator.
1722 if (Environment == NativeEnvironment && Platform != MacOS &&
1723 OSTarget->canInferSimulatorFromArch() &&
1724 (getTriple().getArch() == llvm::Triple::x86 ||
1725 getTriple().getArch() == llvm::Triple::x86_64))
1726 Environment = Simulator;
1728 setTarget(Platform, Environment, Major, Minor, Micro);
1730 if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
1731 StringRef SDK = getSDKName(A->getValue());
1732 if (SDK.size() > 0) {
1733 size_t StartVer = SDK.find_first_of("0123456789");
1734 StringRef SDKName = SDK.slice(0, StartVer);
1735 if (!SDKName.startswith(getPlatformFamily()))
1736 getDriver().Diag(diag::warn_incompatible_sysroot)
1737 << SDKName << getPlatformFamily();
1742 void DarwinClang::AddClangCXXStdlibIncludeArgs(
1743 const llvm::opt::ArgList &DriverArgs,
1744 llvm::opt::ArgStringList &CC1Args) const {
1745 // The implementation from a base class will pass through the -stdlib to
1747 // FIXME: this should not be necessary, remove usages in the frontend
1748 // (e.g. HeaderSearchOptions::UseLibcxx) and don't pipe -stdlib.
1749 ToolChain::AddClangCXXStdlibIncludeArgs(DriverArgs, CC1Args);
1751 if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
1752 DriverArgs.hasArg(options::OPT_nostdincxx))
1755 switch (GetCXXStdlibType(DriverArgs)) {
1756 case ToolChain::CST_Libcxx: {
1757 llvm::StringRef InstallDir = getDriver().getInstalledDir();
1758 if (InstallDir.empty())
1760 // On Darwin, libc++ may be installed alongside the compiler in
1762 // Get from 'foo/bin' to 'foo/include/c++/v1'.
1763 SmallString<128> P = InstallDir;
1764 // Note that InstallDir can be relative, so we have to '..' and not
1766 llvm::sys::path::append(P, "..", "include", "c++", "v1");
1767 addSystemInclude(DriverArgs, CC1Args, P);
1770 case ToolChain::CST_Libstdcxx:
1771 // FIXME: should we do something about it?
1775 void DarwinClang::AddCXXStdlibLibArgs(const ArgList &Args,
1776 ArgStringList &CmdArgs) const {
1777 CXXStdlibType Type = GetCXXStdlibType(Args);
1780 case ToolChain::CST_Libcxx:
1781 CmdArgs.push_back("-lc++");
1784 case ToolChain::CST_Libstdcxx:
1785 // Unfortunately, -lstdc++ doesn't always exist in the standard search path;
1786 // it was previously found in the gcc lib dir. However, for all the Darwin
1787 // platforms we care about it was -lstdc++.6, so we search for that
1788 // explicitly if we can't see an obvious -lstdc++ candidate.
1790 // Check in the sysroot first.
1791 if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
1792 SmallString<128> P(A->getValue());
1793 llvm::sys::path::append(P, "usr", "lib", "libstdc++.dylib");
1795 if (!getVFS().exists(P)) {
1796 llvm::sys::path::remove_filename(P);
1797 llvm::sys::path::append(P, "libstdc++.6.dylib");
1798 if (getVFS().exists(P)) {
1799 CmdArgs.push_back(Args.MakeArgString(P));
1805 // Otherwise, look in the root.
1806 // FIXME: This should be removed someday when we don't have to care about
1807 // 10.6 and earlier, where /usr/lib/libstdc++.dylib does not exist.
1808 if (!getVFS().exists("/usr/lib/libstdc++.dylib") &&
1809 getVFS().exists("/usr/lib/libstdc++.6.dylib")) {
1810 CmdArgs.push_back("/usr/lib/libstdc++.6.dylib");
1814 // Otherwise, let the linker search.
1815 CmdArgs.push_back("-lstdc++");
1820 void DarwinClang::AddCCKextLibArgs(const ArgList &Args,
1821 ArgStringList &CmdArgs) const {
1822 // For Darwin platforms, use the compiler-rt-based support library
1823 // instead of the gcc-provided one (which is also incidentally
1824 // only present in the gcc lib dir, which makes it hard to find).
1826 SmallString<128> P(getDriver().ResourceDir);
1827 llvm::sys::path::append(P, "lib", "darwin");
1829 // Use the newer cc_kext for iOS ARM after 6.0.
1830 if (isTargetWatchOS()) {
1831 llvm::sys::path::append(P, "libclang_rt.cc_kext_watchos.a");
1832 } else if (isTargetTvOS()) {
1833 llvm::sys::path::append(P, "libclang_rt.cc_kext_tvos.a");
1834 } else if (isTargetIPhoneOS()) {
1835 llvm::sys::path::append(P, "libclang_rt.cc_kext_ios.a");
1837 llvm::sys::path::append(P, "libclang_rt.cc_kext.a");
1840 // For now, allow missing resource libraries to support developers who may
1841 // not have compiler-rt checked out or integrated into their build.
1842 if (getVFS().exists(P))
1843 CmdArgs.push_back(Args.MakeArgString(P));
1846 DerivedArgList *MachO::TranslateArgs(const DerivedArgList &Args,
1847 StringRef BoundArch,
1848 Action::OffloadKind) const {
1849 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
1850 const OptTable &Opts = getDriver().getOpts();
1852 // FIXME: We really want to get out of the tool chain level argument
1853 // translation business, as it makes the driver functionality much
1854 // more opaque. For now, we follow gcc closely solely for the
1855 // purpose of easily achieving feature parity & testability. Once we
1856 // have something that works, we should reevaluate each translation
1857 // and try to push it down into tool specific logic.
1859 for (Arg *A : Args) {
1860 if (A->getOption().matches(options::OPT_Xarch__)) {
1861 // Skip this argument unless the architecture matches either the toolchain
1862 // triple arch, or the arch being bound.
1863 llvm::Triple::ArchType XarchArch =
1864 tools::darwin::getArchTypeForMachOArchName(A->getValue(0));
1865 if (!(XarchArch == getArch() ||
1866 (!BoundArch.empty() &&
1868 tools::darwin::getArchTypeForMachOArchName(BoundArch))))
1871 Arg *OriginalArg = A;
1872 unsigned Index = Args.getBaseArgs().MakeIndex(A->getValue(1));
1873 unsigned Prev = Index;
1874 std::unique_ptr<Arg> XarchArg(Opts.ParseOneArg(Args, Index));
1876 // If the argument parsing failed or more than one argument was
1877 // consumed, the -Xarch_ argument's parameter tried to consume
1878 // extra arguments. Emit an error and ignore.
1880 // We also want to disallow any options which would alter the
1881 // driver behavior; that isn't going to work in our model. We
1882 // use isDriverOption() as an approximation, although things
1883 // like -O4 are going to slip through.
1884 if (!XarchArg || Index > Prev + 1) {
1885 getDriver().Diag(diag::err_drv_invalid_Xarch_argument_with_args)
1886 << A->getAsString(Args);
1888 } else if (XarchArg->getOption().hasFlag(options::DriverOption)) {
1889 getDriver().Diag(diag::err_drv_invalid_Xarch_argument_isdriver)
1890 << A->getAsString(Args);
1894 XarchArg->setBaseArg(A);
1896 A = XarchArg.release();
1897 DAL->AddSynthesizedArg(A);
1899 // Linker input arguments require custom handling. The problem is that we
1900 // have already constructed the phase actions, so we can not treat them as
1901 // "input arguments".
1902 if (A->getOption().hasFlag(options::LinkerInput)) {
1903 // Convert the argument into individual Zlinker_input_args.
1904 for (const char *Value : A->getValues()) {
1905 DAL->AddSeparateArg(
1906 OriginalArg, Opts.getOption(options::OPT_Zlinker_input), Value);
1912 // Sob. These is strictly gcc compatible for the time being. Apple
1913 // gcc translates options twice, which means that self-expanding
1914 // options add duplicates.
1915 switch ((options::ID)A->getOption().getID()) {
1920 case options::OPT_mkernel:
1921 case options::OPT_fapple_kext:
1923 DAL->AddFlagArg(A, Opts.getOption(options::OPT_static));
1926 case options::OPT_dependency_file:
1927 DAL->AddSeparateArg(A, Opts.getOption(options::OPT_MF), A->getValue());
1930 case options::OPT_gfull:
1931 DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag));
1933 A, Opts.getOption(options::OPT_fno_eliminate_unused_debug_symbols));
1936 case options::OPT_gused:
1937 DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag));
1939 A, Opts.getOption(options::OPT_feliminate_unused_debug_symbols));
1942 case options::OPT_shared:
1943 DAL->AddFlagArg(A, Opts.getOption(options::OPT_dynamiclib));
1946 case options::OPT_fconstant_cfstrings:
1947 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mconstant_cfstrings));
1950 case options::OPT_fno_constant_cfstrings:
1951 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_constant_cfstrings));
1954 case options::OPT_Wnonportable_cfstrings:
1956 Opts.getOption(options::OPT_mwarn_nonportable_cfstrings));
1959 case options::OPT_Wno_nonportable_cfstrings:
1961 A, Opts.getOption(options::OPT_mno_warn_nonportable_cfstrings));
1964 case options::OPT_fpascal_strings:
1965 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mpascal_strings));
1968 case options::OPT_fno_pascal_strings:
1969 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_pascal_strings));
1974 if (getTriple().getArch() == llvm::Triple::x86 ||
1975 getTriple().getArch() == llvm::Triple::x86_64)
1976 if (!Args.hasArgNoClaim(options::OPT_mtune_EQ))
1977 DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_mtune_EQ),
1980 // Add the arch options based on the particular spelling of -arch, to match
1981 // how the driver driver works.
1982 if (!BoundArch.empty()) {
1983 StringRef Name = BoundArch;
1984 const Option MCpu = Opts.getOption(options::OPT_mcpu_EQ);
1985 const Option MArch = Opts.getOption(clang::driver::options::OPT_march_EQ);
1987 // This code must be kept in sync with LLVM's getArchTypeForDarwinArch,
1988 // which defines the list of which architectures we accept.
1991 else if (Name == "ppc601")
1992 DAL->AddJoinedArg(nullptr, MCpu, "601");
1993 else if (Name == "ppc603")
1994 DAL->AddJoinedArg(nullptr, MCpu, "603");
1995 else if (Name == "ppc604")
1996 DAL->AddJoinedArg(nullptr, MCpu, "604");
1997 else if (Name == "ppc604e")
1998 DAL->AddJoinedArg(nullptr, MCpu, "604e");
1999 else if (Name == "ppc750")
2000 DAL->AddJoinedArg(nullptr, MCpu, "750");
2001 else if (Name == "ppc7400")
2002 DAL->AddJoinedArg(nullptr, MCpu, "7400");
2003 else if (Name == "ppc7450")
2004 DAL->AddJoinedArg(nullptr, MCpu, "7450");
2005 else if (Name == "ppc970")
2006 DAL->AddJoinedArg(nullptr, MCpu, "970");
2008 else if (Name == "ppc64" || Name == "ppc64le")
2009 DAL->AddFlagArg(nullptr, Opts.getOption(options::OPT_m64));
2011 else if (Name == "i386")
2013 else if (Name == "i486")
2014 DAL->AddJoinedArg(nullptr, MArch, "i486");
2015 else if (Name == "i586")
2016 DAL->AddJoinedArg(nullptr, MArch, "i586");
2017 else if (Name == "i686")
2018 DAL->AddJoinedArg(nullptr, MArch, "i686");
2019 else if (Name == "pentium")
2020 DAL->AddJoinedArg(nullptr, MArch, "pentium");
2021 else if (Name == "pentium2")
2022 DAL->AddJoinedArg(nullptr, MArch, "pentium2");
2023 else if (Name == "pentpro")
2024 DAL->AddJoinedArg(nullptr, MArch, "pentiumpro");
2025 else if (Name == "pentIIm3")
2026 DAL->AddJoinedArg(nullptr, MArch, "pentium2");
2028 else if (Name == "x86_64" || Name == "x86_64h")
2029 DAL->AddFlagArg(nullptr, Opts.getOption(options::OPT_m64));
2031 else if (Name == "arm")
2032 DAL->AddJoinedArg(nullptr, MArch, "armv4t");
2033 else if (Name == "armv4t")
2034 DAL->AddJoinedArg(nullptr, MArch, "armv4t");
2035 else if (Name == "armv5")
2036 DAL->AddJoinedArg(nullptr, MArch, "armv5tej");
2037 else if (Name == "xscale")
2038 DAL->AddJoinedArg(nullptr, MArch, "xscale");
2039 else if (Name == "armv6")
2040 DAL->AddJoinedArg(nullptr, MArch, "armv6k");
2041 else if (Name == "armv6m")
2042 DAL->AddJoinedArg(nullptr, MArch, "armv6m");
2043 else if (Name == "armv7")
2044 DAL->AddJoinedArg(nullptr, MArch, "armv7a");
2045 else if (Name == "armv7em")
2046 DAL->AddJoinedArg(nullptr, MArch, "armv7em");
2047 else if (Name == "armv7k")
2048 DAL->AddJoinedArg(nullptr, MArch, "armv7k");
2049 else if (Name == "armv7m")
2050 DAL->AddJoinedArg(nullptr, MArch, "armv7m");
2051 else if (Name == "armv7s")
2052 DAL->AddJoinedArg(nullptr, MArch, "armv7s");
2058 void MachO::AddLinkRuntimeLibArgs(const ArgList &Args,
2059 ArgStringList &CmdArgs) const {
2060 // Embedded targets are simple at the moment, not supporting sanitizers and
2061 // with different libraries for each member of the product { static, PIC } x
2062 // { hard-float, soft-float }
2063 llvm::SmallString<32> CompilerRT = StringRef("");
2065 (tools::arm::getARMFloatABI(*this, Args) == tools::arm::FloatABI::Hard)
2068 CompilerRT += Args.hasArg(options::OPT_fPIC) ? "_pic" : "_static";
2070 AddLinkRuntimeLib(Args, CmdArgs, CompilerRT, RLO_IsEmbedded);
2073 bool Darwin::isAlignedAllocationUnavailable() const {
2074 llvm::Triple::OSType OS;
2076 switch (TargetPlatform) {
2077 case MacOS: // Earlier than 10.13.
2078 OS = llvm::Triple::MacOSX;
2081 OS = llvm::Triple::IOS;
2083 case TvOS: // Earlier than 11.0.
2084 OS = llvm::Triple::TvOS;
2086 case WatchOS: // Earlier than 4.0.
2087 OS = llvm::Triple::WatchOS;
2091 return TargetVersion < alignedAllocMinVersion(OS);
2094 void Darwin::addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
2095 llvm::opt::ArgStringList &CC1Args,
2096 Action::OffloadKind DeviceOffloadKind) const {
2097 // Pass "-faligned-alloc-unavailable" only when the user hasn't manually
2098 // enabled or disabled aligned allocations.
2099 if (!DriverArgs.hasArgNoClaim(options::OPT_faligned_allocation,
2100 options::OPT_fno_aligned_allocation) &&
2101 isAlignedAllocationUnavailable())
2102 CC1Args.push_back("-faligned-alloc-unavailable");
2105 /// Pass the SDK version to the compiler when the SDK information is
2108 llvm::raw_string_ostream OS(Arg);
2109 OS << "-target-sdk-version=" << SDKInfo->getVersion();
2110 CC1Args.push_back(DriverArgs.MakeArgString(OS.str()));
2115 Darwin::TranslateArgs(const DerivedArgList &Args, StringRef BoundArch,
2116 Action::OffloadKind DeviceOffloadKind) const {
2117 // First get the generic Apple args, before moving onto Darwin-specific ones.
2118 DerivedArgList *DAL =
2119 MachO::TranslateArgs(Args, BoundArch, DeviceOffloadKind);
2120 const OptTable &Opts = getDriver().getOpts();
2122 // If no architecture is bound, none of the translations here are relevant.
2123 if (BoundArch.empty())
2126 // Add an explicit version min argument for the deployment target. We do this
2127 // after argument translation because -Xarch_ arguments may add a version min
2129 AddDeploymentTarget(*DAL);
2131 // For iOS 6, undo the translation to add -static for -mkernel/-fapple-kext.
2132 // FIXME: It would be far better to avoid inserting those -static arguments,
2133 // but we can't check the deployment target in the translation code until
2135 if (isTargetWatchOSBased() ||
2136 (isTargetIOSBased() && !isIPhoneOSVersionLT(6, 0))) {
2137 for (ArgList::iterator it = DAL->begin(), ie = DAL->end(); it != ie; ) {
2140 if (A->getOption().getID() != options::OPT_mkernel &&
2141 A->getOption().getID() != options::OPT_fapple_kext)
2143 assert(it != ie && "unexpected argument translation");
2145 assert(A->getOption().getID() == options::OPT_static &&
2146 "missing expected -static argument");
2152 if (!Args.getLastArg(options::OPT_stdlib_EQ) &&
2153 GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
2154 DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_stdlib_EQ),
2157 // Validate the C++ standard library choice.
2158 CXXStdlibType Type = GetCXXStdlibType(*DAL);
2159 if (Type == ToolChain::CST_Libcxx) {
2160 // Check whether the target provides libc++.
2163 // Complain about targeting iOS < 5.0 in any way.
2164 if (isTargetIOSBased() && isIPhoneOSVersionLT(5, 0))
2167 if (where != StringRef()) {
2168 getDriver().Diag(clang::diag::err_drv_invalid_libcxx_deployment) << where;
2172 auto Arch = tools::darwin::getArchTypeForMachOArchName(BoundArch);
2173 if ((Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb)) {
2174 if (Args.hasFlag(options::OPT_fomit_frame_pointer,
2175 options::OPT_fno_omit_frame_pointer, false))
2176 getDriver().Diag(clang::diag::warn_drv_unsupported_opt_for_target)
2177 << "-fomit-frame-pointer" << BoundArch;
2183 bool MachO::IsUnwindTablesDefault(const ArgList &Args) const {
2184 // Unwind tables are not emitted if -fno-exceptions is supplied (except when
2185 // targeting x86_64).
2186 return getArch() == llvm::Triple::x86_64 ||
2187 (GetExceptionModel(Args) != llvm::ExceptionHandling::SjLj &&
2188 Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
2192 bool MachO::UseDwarfDebugFlags() const {
2193 if (const char *S = ::getenv("RC_DEBUG_OPTIONS"))
2194 return S[0] != '\0';
2198 llvm::ExceptionHandling Darwin::GetExceptionModel(const ArgList &Args) const {
2199 // Darwin uses SjLj exceptions on ARM.
2200 if (getTriple().getArch() != llvm::Triple::arm &&
2201 getTriple().getArch() != llvm::Triple::thumb)
2202 return llvm::ExceptionHandling::None;
2204 // Only watchOS uses the new DWARF/Compact unwinding method.
2205 llvm::Triple Triple(ComputeLLVMTriple(Args));
2206 if (Triple.isWatchABI())
2207 return llvm::ExceptionHandling::DwarfCFI;
2209 return llvm::ExceptionHandling::SjLj;
2212 bool Darwin::SupportsEmbeddedBitcode() const {
2213 assert(TargetInitialized && "Target not initialized!");
2214 if (isTargetIPhoneOS() && isIPhoneOSVersionLT(6, 0))
2219 bool MachO::isPICDefault() const { return true; }
2221 bool MachO::isPIEDefault() const { return false; }
2223 bool MachO::isPICDefaultForced() const {
2224 return (getArch() == llvm::Triple::x86_64 ||
2225 getArch() == llvm::Triple::aarch64);
2228 bool MachO::SupportsProfiling() const {
2229 // Profiling instrumentation is only supported on x86.
2230 return getArch() == llvm::Triple::x86 || getArch() == llvm::Triple::x86_64;
2233 void Darwin::addMinVersionArgs(const ArgList &Args,
2234 ArgStringList &CmdArgs) const {
2235 VersionTuple TargetVersion = getTargetVersion();
2237 if (isTargetWatchOS())
2238 CmdArgs.push_back("-watchos_version_min");
2239 else if (isTargetWatchOSSimulator())
2240 CmdArgs.push_back("-watchos_simulator_version_min");
2241 else if (isTargetTvOS())
2242 CmdArgs.push_back("-tvos_version_min");
2243 else if (isTargetTvOSSimulator())
2244 CmdArgs.push_back("-tvos_simulator_version_min");
2245 else if (isTargetIOSSimulator())
2246 CmdArgs.push_back("-ios_simulator_version_min");
2247 else if (isTargetIOSBased())
2248 CmdArgs.push_back("-iphoneos_version_min");
2250 assert(isTargetMacOS() && "unexpected target");
2251 CmdArgs.push_back("-macosx_version_min");
2254 CmdArgs.push_back(Args.MakeArgString(TargetVersion.getAsString()));
2257 void Darwin::addStartObjectFileArgs(const ArgList &Args,
2258 ArgStringList &CmdArgs) const {
2259 // Derived from startfile spec.
2260 if (Args.hasArg(options::OPT_dynamiclib)) {
2261 // Derived from darwin_dylib1 spec.
2262 if (isTargetWatchOSBased()) {
2263 ; // watchOS does not need dylib1.o.
2264 } else if (isTargetIOSSimulator()) {
2265 ; // iOS simulator does not need dylib1.o.
2266 } else if (isTargetIPhoneOS()) {
2267 if (isIPhoneOSVersionLT(3, 1))
2268 CmdArgs.push_back("-ldylib1.o");
2270 if (isMacosxVersionLT(10, 5))
2271 CmdArgs.push_back("-ldylib1.o");
2272 else if (isMacosxVersionLT(10, 6))
2273 CmdArgs.push_back("-ldylib1.10.5.o");
2276 if (Args.hasArg(options::OPT_bundle)) {
2277 if (!Args.hasArg(options::OPT_static)) {
2278 // Derived from darwin_bundle1 spec.
2279 if (isTargetWatchOSBased()) {
2280 ; // watchOS does not need bundle1.o.
2281 } else if (isTargetIOSSimulator()) {
2282 ; // iOS simulator does not need bundle1.o.
2283 } else if (isTargetIPhoneOS()) {
2284 if (isIPhoneOSVersionLT(3, 1))
2285 CmdArgs.push_back("-lbundle1.o");
2287 if (isMacosxVersionLT(10, 6))
2288 CmdArgs.push_back("-lbundle1.o");
2292 if (Args.hasArg(options::OPT_pg) && SupportsProfiling()) {
2293 if (Args.hasArg(options::OPT_static) ||
2294 Args.hasArg(options::OPT_object) ||
2295 Args.hasArg(options::OPT_preload)) {
2296 CmdArgs.push_back("-lgcrt0.o");
2298 CmdArgs.push_back("-lgcrt1.o");
2300 // darwin_crt2 spec is empty.
2302 // By default on OS X 10.8 and later, we don't link with a crt1.o
2303 // file and the linker knows to use _main as the entry point. But,
2304 // when compiling with -pg, we need to link with the gcrt1.o file,
2305 // so pass the -no_new_main option to tell the linker to use the
2306 // "start" symbol as the entry point.
2307 if (isTargetMacOS() && !isMacosxVersionLT(10, 8))
2308 CmdArgs.push_back("-no_new_main");
2310 if (Args.hasArg(options::OPT_static) ||
2311 Args.hasArg(options::OPT_object) ||
2312 Args.hasArg(options::OPT_preload)) {
2313 CmdArgs.push_back("-lcrt0.o");
2315 // Derived from darwin_crt1 spec.
2316 if (isTargetWatchOSBased()) {
2317 ; // watchOS does not need crt1.o.
2318 } else if (isTargetIOSSimulator()) {
2319 ; // iOS simulator does not need crt1.o.
2320 } else if (isTargetIPhoneOS()) {
2321 if (getArch() == llvm::Triple::aarch64)
2322 ; // iOS does not need any crt1 files for arm64
2323 else if (isIPhoneOSVersionLT(3, 1))
2324 CmdArgs.push_back("-lcrt1.o");
2325 else if (isIPhoneOSVersionLT(6, 0))
2326 CmdArgs.push_back("-lcrt1.3.1.o");
2328 if (isMacosxVersionLT(10, 5))
2329 CmdArgs.push_back("-lcrt1.o");
2330 else if (isMacosxVersionLT(10, 6))
2331 CmdArgs.push_back("-lcrt1.10.5.o");
2332 else if (isMacosxVersionLT(10, 8))
2333 CmdArgs.push_back("-lcrt1.10.6.o");
2335 // darwin_crt2 spec is empty.
2342 if (!isTargetIPhoneOS() && Args.hasArg(options::OPT_shared_libgcc) &&
2343 !isTargetWatchOS() && isMacosxVersionLT(10, 5)) {
2344 const char *Str = Args.MakeArgString(GetFilePath("crt3.o"));
2345 CmdArgs.push_back(Str);
2349 void Darwin::CheckObjCARC() const {
2350 if (isTargetIOSBased() || isTargetWatchOSBased() ||
2351 (isTargetMacOS() && !isMacosxVersionLT(10, 6)))
2353 getDriver().Diag(diag::err_arc_unsupported_on_toolchain);
2356 SanitizerMask Darwin::getSupportedSanitizers() const {
2357 const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64;
2358 SanitizerMask Res = ToolChain::getSupportedSanitizers();
2359 Res |= SanitizerKind::Address;
2360 Res |= SanitizerKind::Leak;
2361 Res |= SanitizerKind::Fuzzer;
2362 Res |= SanitizerKind::FuzzerNoLink;
2363 Res |= SanitizerKind::Function;
2365 // Prior to 10.9, macOS shipped a version of the C++ standard library without
2366 // C++11 support. The same is true of iOS prior to version 5. These OS'es are
2367 // incompatible with -fsanitize=vptr.
2368 if (!(isTargetMacOS() && isMacosxVersionLT(10, 9))
2369 && !(isTargetIPhoneOS() && isIPhoneOSVersionLT(5, 0)))
2370 Res |= SanitizerKind::Vptr;
2372 if (isTargetMacOS()) {
2374 Res |= SanitizerKind::Thread;
2375 } else if (isTargetIOSSimulator() || isTargetTvOSSimulator()) {
2377 Res |= SanitizerKind::Thread;
2382 void Darwin::printVerboseInfo(raw_ostream &OS) const {
2383 CudaInstallation.print(OS);