clang  8.0.0svn
Darwin.cpp
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1 //===--- Darwin.cpp - Darwin Tool and ToolChain Implementations -*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "Darwin.h"
11 #include "Arch/ARM.h"
12 #include "CommonArgs.h"
17 #include "clang/Driver/Driver.h"
19 #include "clang/Driver/Options.h"
21 #include "llvm/ADT/StringSwitch.h"
22 #include "llvm/Option/ArgList.h"
23 #include "llvm/Support/Path.h"
24 #include "llvm/Support/ScopedPrinter.h"
25 #include "llvm/Support/TargetParser.h"
26 #include <cstdlib> // ::getenv
27 
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;
33 
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.
37 
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
42  // support for it.
43 
44  // This code must be kept in sync with Clang's Darwin specific argument
45  // translation.
46 
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",
53  llvm::Triple::x86)
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);
67 }
68 
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);
72  T.setArch(Arch);
73 
74  if (Str == "x86_64h")
75  T.setArchName(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);
81  }
82 }
83 
85  const InputInfo &Output,
86  const InputInfoList &Inputs,
87  const ArgList &Args,
88  const char *LinkingOutput) const {
89  ArgStringList CmdArgs;
90 
91  assert(Inputs.size() == 1 && "Unexpected number of inputs.");
92  const InputInfo &Input = Inputs[0];
93 
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];
99  }
100 
101  // If -fno-integrated-as is used add -Q to the darwin assember 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");
110  }
111 
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");
119  }
120 
121  // Derived from asm spec.
122  AddMachOArch(Args, CmdArgs);
123 
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");
129 
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");
136 
137  Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
138 
139  assert(Output.isFilename() && "Unexpected lipo output.");
140  CmdArgs.push_back("-o");
141  CmdArgs.push_back(Output.getFilename());
142 
143  assert(Input.isFilename() && "Invalid input.");
144  CmdArgs.push_back(Input.getFilename());
145 
146  // asm_final spec is empty.
147 
148  const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
149  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
150 }
151 
152 void darwin::MachOTool::anchor() {}
153 
154 void darwin::MachOTool::AddMachOArch(const ArgList &Args,
155  ArgStringList &CmdArgs) const {
156  StringRef ArchName = getMachOToolChain().getMachOArchName(Args);
157 
158  // Derived from darwin_arch spec.
159  CmdArgs.push_back("-arch");
160  CmdArgs.push_back(Args.MakeArgString(ArchName));
161 
162  // FIXME: Is this needed anymore?
163  if (ArchName == "arm")
164  CmdArgs.push_back("-force_cpusubtype_ALL");
165 }
166 
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)
173  return true;
174 
175  return false;
176 }
177 
178 /// Pass -no_deduplicate to ld64 under certain conditions:
179 ///
180 /// - Either -O0 or -O1 is explicitly specified
181 /// - No -O option is specified *and* this is a compile+link (implicit -O0)
182 ///
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))
188  return true;
189  if (A->getOption().matches(options::OPT_O))
190  return llvm::StringSwitch<bool>(A->getValue())
191  .Case("1", true)
192  .Default(false);
193  return false; // OPT_Ofast & OPT_O4
194  }
195 
196  if (!IsLinkerOnlyAction) // Implicit -O0 for compile+linker only.
197  return true;
198  return false;
199 }
200 
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();
206 
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);
211  }
212 
213  // Newer linkers support -demangle. Pass it if supported and not disabled by
214  // the user.
215  if (Version[0] >= 100 && !Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
216  CmdArgs.push_back("-demangle");
217 
218  if (Args.hasArg(options::OPT_rdynamic) && Version[0] >= 137)
219  CmdArgs.push_back("-export_dynamic");
220 
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");
226 
227  if (D.isUsingLTO()) {
228  // If we are using LTO, then automatically create a temporary file path for
229  // the linker to use, so that it's lifetime will extend past a possible
230  // dsymutil step.
231  if (Version[0] >= 116 && NeedsTempPath(Inputs)) {
232  const char *TmpPath = C.getArgs().MakeArgString(
233  D.GetTemporaryPath("cc", types::getTypeTempSuffix(types::TY_Object)));
234  C.addTempFile(TmpPath);
235  CmdArgs.push_back("-object_path_lto");
236  CmdArgs.push_back(TmpPath);
237  }
238  }
239 
240  // Use -lto_library option to specify the libLTO.dylib path. Try to find
241  // it in clang installed libraries. ld64 will only look at this argument
242  // when it actually uses LTO, so libLTO.dylib only needs to exist at link
243  // time if ld64 decides that it needs to use LTO.
244  // Since this is passed unconditionally, ld64 will never look for libLTO.dylib
245  // next to it. That's ok since ld64 using a libLTO.dylib not matching the
246  // clang version won't work anyways.
247  if (Version[0] >= 133) {
248  // Search for libLTO in <InstalledDir>/../lib/libLTO.dylib
249  StringRef P = llvm::sys::path::parent_path(D.Dir);
250  SmallString<128> LibLTOPath(P);
251  llvm::sys::path::append(LibLTOPath, "lib");
252  llvm::sys::path::append(LibLTOPath, "libLTO.dylib");
253  CmdArgs.push_back("-lto_library");
254  CmdArgs.push_back(C.getArgs().MakeArgString(LibLTOPath));
255  }
256 
257  // ld64 version 262 and above run the deduplicate pass by default.
258  if (Version[0] >= 262 && shouldLinkerNotDedup(C.getJobs().empty(), Args))
259  CmdArgs.push_back("-no_deduplicate");
260 
261  // Derived from the "link" spec.
262  Args.AddAllArgs(CmdArgs, options::OPT_static);
263  if (!Args.hasArg(options::OPT_static))
264  CmdArgs.push_back("-dynamic");
265  if (Args.hasArg(options::OPT_fgnu_runtime)) {
266  // FIXME: gcc replaces -lobjc in forward args with -lobjc-gnu
267  // here. How do we wish to handle such things?
268  }
269 
270  if (!Args.hasArg(options::OPT_dynamiclib)) {
271  AddMachOArch(Args, CmdArgs);
272  // FIXME: Why do this only on this path?
273  Args.AddLastArg(CmdArgs, options::OPT_force__cpusubtype__ALL);
274 
275  Args.AddLastArg(CmdArgs, options::OPT_bundle);
276  Args.AddAllArgs(CmdArgs, options::OPT_bundle__loader);
277  Args.AddAllArgs(CmdArgs, options::OPT_client__name);
278 
279  Arg *A;
280  if ((A = Args.getLastArg(options::OPT_compatibility__version)) ||
281  (A = Args.getLastArg(options::OPT_current__version)) ||
282  (A = Args.getLastArg(options::OPT_install__name)))
283  D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
284  << "-dynamiclib";
285 
286  Args.AddLastArg(CmdArgs, options::OPT_force__flat__namespace);
287  Args.AddLastArg(CmdArgs, options::OPT_keep__private__externs);
288  Args.AddLastArg(CmdArgs, options::OPT_private__bundle);
289  } else {
290  CmdArgs.push_back("-dylib");
291 
292  Arg *A;
293  if ((A = Args.getLastArg(options::OPT_bundle)) ||
294  (A = Args.getLastArg(options::OPT_bundle__loader)) ||
295  (A = Args.getLastArg(options::OPT_client__name)) ||
296  (A = Args.getLastArg(options::OPT_force__flat__namespace)) ||
297  (A = Args.getLastArg(options::OPT_keep__private__externs)) ||
298  (A = Args.getLastArg(options::OPT_private__bundle)))
299  D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
300  << "-dynamiclib";
301 
302  Args.AddAllArgsTranslated(CmdArgs, options::OPT_compatibility__version,
303  "-dylib_compatibility_version");
304  Args.AddAllArgsTranslated(CmdArgs, options::OPT_current__version,
305  "-dylib_current_version");
306 
307  AddMachOArch(Args, CmdArgs);
308 
309  Args.AddAllArgsTranslated(CmdArgs, options::OPT_install__name,
310  "-dylib_install_name");
311  }
312 
313  Args.AddLastArg(CmdArgs, options::OPT_all__load);
314  Args.AddAllArgs(CmdArgs, options::OPT_allowable__client);
315  Args.AddLastArg(CmdArgs, options::OPT_bind__at__load);
316  if (MachOTC.isTargetIOSBased())
317  Args.AddLastArg(CmdArgs, options::OPT_arch__errors__fatal);
318  Args.AddLastArg(CmdArgs, options::OPT_dead__strip);
319  Args.AddLastArg(CmdArgs, options::OPT_no__dead__strip__inits__and__terms);
320  Args.AddAllArgs(CmdArgs, options::OPT_dylib__file);
321  Args.AddLastArg(CmdArgs, options::OPT_dynamic);
322  Args.AddAllArgs(CmdArgs, options::OPT_exported__symbols__list);
323  Args.AddLastArg(CmdArgs, options::OPT_flat__namespace);
324  Args.AddAllArgs(CmdArgs, options::OPT_force__load);
325  Args.AddAllArgs(CmdArgs, options::OPT_headerpad__max__install__names);
326  Args.AddAllArgs(CmdArgs, options::OPT_image__base);
327  Args.AddAllArgs(CmdArgs, options::OPT_init);
328 
329  // Add the deployment target.
330  MachOTC.addMinVersionArgs(Args, CmdArgs);
331 
332  Args.AddLastArg(CmdArgs, options::OPT_nomultidefs);
333  Args.AddLastArg(CmdArgs, options::OPT_multi__module);
334  Args.AddLastArg(CmdArgs, options::OPT_single__module);
335  Args.AddAllArgs(CmdArgs, options::OPT_multiply__defined);
336  Args.AddAllArgs(CmdArgs, options::OPT_multiply__defined__unused);
337 
338  if (const Arg *A =
339  Args.getLastArg(options::OPT_fpie, options::OPT_fPIE,
340  options::OPT_fno_pie, options::OPT_fno_PIE)) {
341  if (A->getOption().matches(options::OPT_fpie) ||
342  A->getOption().matches(options::OPT_fPIE))
343  CmdArgs.push_back("-pie");
344  else
345  CmdArgs.push_back("-no_pie");
346  }
347 
348  // for embed-bitcode, use -bitcode_bundle in linker command
349  if (C.getDriver().embedBitcodeEnabled()) {
350  // Check if the toolchain supports bitcode build flow.
351  if (MachOTC.SupportsEmbeddedBitcode()) {
352  CmdArgs.push_back("-bitcode_bundle");
353  if (C.getDriver().embedBitcodeMarkerOnly() && Version[0] >= 278) {
354  CmdArgs.push_back("-bitcode_process_mode");
355  CmdArgs.push_back("marker");
356  }
357  } else
358  D.Diag(diag::err_drv_bitcode_unsupported_on_toolchain);
359  }
360 
361  Args.AddLastArg(CmdArgs, options::OPT_prebind);
362  Args.AddLastArg(CmdArgs, options::OPT_noprebind);
363  Args.AddLastArg(CmdArgs, options::OPT_nofixprebinding);
364  Args.AddLastArg(CmdArgs, options::OPT_prebind__all__twolevel__modules);
365  Args.AddLastArg(CmdArgs, options::OPT_read__only__relocs);
366  Args.AddAllArgs(CmdArgs, options::OPT_sectcreate);
367  Args.AddAllArgs(CmdArgs, options::OPT_sectorder);
368  Args.AddAllArgs(CmdArgs, options::OPT_seg1addr);
369  Args.AddAllArgs(CmdArgs, options::OPT_segprot);
370  Args.AddAllArgs(CmdArgs, options::OPT_segaddr);
371  Args.AddAllArgs(CmdArgs, options::OPT_segs__read__only__addr);
372  Args.AddAllArgs(CmdArgs, options::OPT_segs__read__write__addr);
373  Args.AddAllArgs(CmdArgs, options::OPT_seg__addr__table);
374  Args.AddAllArgs(CmdArgs, options::OPT_seg__addr__table__filename);
375  Args.AddAllArgs(CmdArgs, options::OPT_sub__library);
376  Args.AddAllArgs(CmdArgs, options::OPT_sub__umbrella);
377 
378  // Give --sysroot= preference, over the Apple specific behavior to also use
379  // --isysroot as the syslibroot.
380  StringRef sysroot = C.getSysRoot();
381  if (sysroot != "") {
382  CmdArgs.push_back("-syslibroot");
383  CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
384  } else if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
385  CmdArgs.push_back("-syslibroot");
386  CmdArgs.push_back(A->getValue());
387  }
388 
389  Args.AddLastArg(CmdArgs, options::OPT_twolevel__namespace);
390  Args.AddLastArg(CmdArgs, options::OPT_twolevel__namespace__hints);
391  Args.AddAllArgs(CmdArgs, options::OPT_umbrella);
392  Args.AddAllArgs(CmdArgs, options::OPT_undefined);
393  Args.AddAllArgs(CmdArgs, options::OPT_unexported__symbols__list);
394  Args.AddAllArgs(CmdArgs, options::OPT_weak__reference__mismatches);
395  Args.AddLastArg(CmdArgs, options::OPT_X_Flag);
396  Args.AddAllArgs(CmdArgs, options::OPT_y);
397  Args.AddLastArg(CmdArgs, options::OPT_w);
398  Args.AddAllArgs(CmdArgs, options::OPT_pagezero__size);
399  Args.AddAllArgs(CmdArgs, options::OPT_segs__read__);
400  Args.AddLastArg(CmdArgs, options::OPT_seglinkedit);
401  Args.AddLastArg(CmdArgs, options::OPT_noseglinkedit);
402  Args.AddAllArgs(CmdArgs, options::OPT_sectalign);
403  Args.AddAllArgs(CmdArgs, options::OPT_sectobjectsymbols);
404  Args.AddAllArgs(CmdArgs, options::OPT_segcreate);
405  Args.AddLastArg(CmdArgs, options::OPT_whyload);
406  Args.AddLastArg(CmdArgs, options::OPT_whatsloaded);
407  Args.AddAllArgs(CmdArgs, options::OPT_dylinker__install__name);
408  Args.AddLastArg(CmdArgs, options::OPT_dylinker);
409  Args.AddLastArg(CmdArgs, options::OPT_Mach);
410 }
411 
412 /// Determine whether we are linking the ObjC runtime.
413 static bool isObjCRuntimeLinked(const ArgList &Args) {
414  if (isObjCAutoRefCount(Args)) {
415  Args.ClaimAllArgs(options::OPT_fobjc_link_runtime);
416  return true;
417  }
418  return Args.hasArg(options::OPT_fobjc_link_runtime);
419 }
420 
422  const InputInfo &Output,
423  const InputInfoList &Inputs,
424  const ArgList &Args,
425  const char *LinkingOutput) const {
426  assert(Output.getType() == types::TY_Image && "Invalid linker output type.");
427 
428  // If the number of arguments surpasses the system limits, we will encode the
429  // input files in a separate file, shortening the command line. To this end,
430  // build a list of input file names that can be passed via a file with the
431  // -filelist linker option.
432  llvm::opt::ArgStringList InputFileList;
433 
434  // The logic here is derived from gcc's behavior; most of which
435  // comes from specs (starting with link_command). Consult gcc for
436  // more information.
437  ArgStringList CmdArgs;
438 
439  /// Hack(tm) to ignore linking errors when we are doing ARC migration.
440  if (Args.hasArg(options::OPT_ccc_arcmt_check,
441  options::OPT_ccc_arcmt_migrate)) {
442  for (const auto &Arg : Args)
443  Arg->claim();
444  const char *Exec =
445  Args.MakeArgString(getToolChain().GetProgramPath("touch"));
446  CmdArgs.push_back(Output.getFilename());
447  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, None));
448  return;
449  }
450 
451  // I'm not sure why this particular decomposition exists in gcc, but
452  // we follow suite for ease of comparison.
453  AddLinkArgs(C, Args, CmdArgs, Inputs);
454 
455  // For LTO, pass the name of the optimization record file and other
456  // opt-remarks flags.
457  if (Args.hasFlag(options::OPT_fsave_optimization_record,
458  options::OPT_fno_save_optimization_record, false)) {
459  CmdArgs.push_back("-mllvm");
460  CmdArgs.push_back("-lto-pass-remarks-output");
461  CmdArgs.push_back("-mllvm");
462 
464  F = Output.getFilename();
465  F += ".opt.yaml";
466  CmdArgs.push_back(Args.MakeArgString(F));
467 
468  if (getLastProfileUseArg(Args)) {
469  CmdArgs.push_back("-mllvm");
470  CmdArgs.push_back("-lto-pass-remarks-with-hotness");
471 
472  if (const Arg *A =
473  Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
474  CmdArgs.push_back("-mllvm");
475  std::string Opt =
476  std::string("-lto-pass-remarks-hotness-threshold=") + A->getValue();
477  CmdArgs.push_back(Args.MakeArgString(Opt));
478  }
479  }
480  }
481 
482  // Propagate the -moutline flag to the linker in LTO.
483  if (Args.hasFlag(options::OPT_moutline, options::OPT_mno_outline, false)) {
484  if (getMachOToolChain().getMachOArchName(Args) == "arm64") {
485  CmdArgs.push_back("-mllvm");
486  CmdArgs.push_back("-enable-machine-outliner");
487 
488  // Outline from linkonceodr functions by default in LTO.
489  CmdArgs.push_back("-mllvm");
490  CmdArgs.push_back("-enable-linkonceodr-outlining");
491  }
492  }
493 
494  // It seems that the 'e' option is completely ignored for dynamic executables
495  // (the default), and with static executables, the last one wins, as expected.
496  Args.AddAllArgs(CmdArgs, {options::OPT_d_Flag, options::OPT_s, options::OPT_t,
497  options::OPT_Z_Flag, options::OPT_u_Group,
498  options::OPT_e, options::OPT_r});
499 
500  // Forward -ObjC when either -ObjC or -ObjC++ is used, to force loading
501  // members of static archive libraries which implement Objective-C classes or
502  // categories.
503  if (Args.hasArg(options::OPT_ObjC) || Args.hasArg(options::OPT_ObjCXX))
504  CmdArgs.push_back("-ObjC");
505 
506  CmdArgs.push_back("-o");
507  CmdArgs.push_back(Output.getFilename());
508 
509  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles))
510  getMachOToolChain().addStartObjectFileArgs(Args, CmdArgs);
511 
512  Args.AddAllArgs(CmdArgs, options::OPT_L);
513 
514  AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
515  // Build the input file for -filelist (list of linker input files) in case we
516  // need it later
517  for (const auto &II : Inputs) {
518  if (!II.isFilename()) {
519  // This is a linker input argument.
520  // We cannot mix input arguments and file names in a -filelist input, thus
521  // we prematurely stop our list (remaining files shall be passed as
522  // arguments).
523  if (InputFileList.size() > 0)
524  break;
525 
526  continue;
527  }
528 
529  InputFileList.push_back(II.getFilename());
530  }
531 
532  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs))
533  addOpenMPRuntime(CmdArgs, getToolChain(), Args);
534 
535  if (isObjCRuntimeLinked(Args) &&
536  !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
537  // We use arclite library for both ARC and subscripting support.
538  getMachOToolChain().AddLinkARCArgs(Args, CmdArgs);
539 
540  CmdArgs.push_back("-framework");
541  CmdArgs.push_back("Foundation");
542  // Link libobj.
543  CmdArgs.push_back("-lobjc");
544  }
545 
546  if (LinkingOutput) {
547  CmdArgs.push_back("-arch_multiple");
548  CmdArgs.push_back("-final_output");
549  CmdArgs.push_back(LinkingOutput);
550  }
551 
552  if (Args.hasArg(options::OPT_fnested_functions))
553  CmdArgs.push_back("-allow_stack_execute");
554 
555  getMachOToolChain().addProfileRTLibs(Args, CmdArgs);
556 
557  if (unsigned Parallelism =
558  getLTOParallelism(Args, getToolChain().getDriver())) {
559  CmdArgs.push_back("-mllvm");
560  CmdArgs.push_back(Args.MakeArgString("-threads=" + Twine(Parallelism)));
561  }
562 
563  if (getToolChain().ShouldLinkCXXStdlib(Args))
564  getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
565  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
566  // link_ssp spec is empty.
567 
568  // Let the tool chain choose which runtime library to link.
569  getMachOToolChain().AddLinkRuntimeLibArgs(Args, CmdArgs);
570 
571  // No need to do anything for pthreads. Claim argument to avoid warning.
572  Args.ClaimAllArgs(options::OPT_pthread);
573  Args.ClaimAllArgs(options::OPT_pthreads);
574  }
575 
576  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
577  // endfile_spec is empty.
578  }
579 
580  Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
581  Args.AddAllArgs(CmdArgs, options::OPT_F);
582 
583  // -iframework should be forwarded as -F.
584  for (const Arg *A : Args.filtered(options::OPT_iframework))
585  CmdArgs.push_back(Args.MakeArgString(std::string("-F") + A->getValue()));
586 
587  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
588  if (Arg *A = Args.getLastArg(options::OPT_fveclib)) {
589  if (A->getValue() == StringRef("Accelerate")) {
590  CmdArgs.push_back("-framework");
591  CmdArgs.push_back("Accelerate");
592  }
593  }
594  }
595 
596  const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
597  std::unique_ptr<Command> Cmd =
598  llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs);
599  Cmd->setInputFileList(std::move(InputFileList));
600  C.addCommand(std::move(Cmd));
601 }
602 
604  const InputInfo &Output,
605  const InputInfoList &Inputs,
606  const ArgList &Args,
607  const char *LinkingOutput) const {
608  ArgStringList CmdArgs;
609 
610  CmdArgs.push_back("-create");
611  assert(Output.isFilename() && "Unexpected lipo output.");
612 
613  CmdArgs.push_back("-output");
614  CmdArgs.push_back(Output.getFilename());
615 
616  for (const auto &II : Inputs) {
617  assert(II.isFilename() && "Unexpected lipo input.");
618  CmdArgs.push_back(II.getFilename());
619  }
620 
621  const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("lipo"));
622  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
623 }
624 
626  const InputInfo &Output,
627  const InputInfoList &Inputs,
628  const ArgList &Args,
629  const char *LinkingOutput) const {
630  ArgStringList CmdArgs;
631 
632  CmdArgs.push_back("-o");
633  CmdArgs.push_back(Output.getFilename());
634 
635  assert(Inputs.size() == 1 && "Unable to handle multiple inputs.");
636  const InputInfo &Input = Inputs[0];
637  assert(Input.isFilename() && "Unexpected dsymutil input.");
638  CmdArgs.push_back(Input.getFilename());
639 
640  const char *Exec =
641  Args.MakeArgString(getToolChain().GetProgramPath("dsymutil"));
642  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
643 }
644 
646  const InputInfo &Output,
647  const InputInfoList &Inputs,
648  const ArgList &Args,
649  const char *LinkingOutput) const {
650  ArgStringList CmdArgs;
651  CmdArgs.push_back("--verify");
652  CmdArgs.push_back("--debug-info");
653  CmdArgs.push_back("--eh-frame");
654  CmdArgs.push_back("--quiet");
655 
656  assert(Inputs.size() == 1 && "Unable to handle multiple inputs.");
657  const InputInfo &Input = Inputs[0];
658  assert(Input.isFilename() && "Unexpected verify input");
659 
660  // Grabbing the output of the earlier dsymutil run.
661  CmdArgs.push_back(Input.getFilename());
662 
663  const char *Exec =
664  Args.MakeArgString(getToolChain().GetProgramPath("dwarfdump"));
665  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
666 }
667 
668 MachO::MachO(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
669  : ToolChain(D, Triple, Args) {
670  // We expect 'as', 'ld', etc. to be adjacent to our install dir.
671  getProgramPaths().push_back(getDriver().getInstalledDir());
672  if (getDriver().getInstalledDir() != getDriver().Dir)
673  getProgramPaths().push_back(getDriver().Dir);
674 }
675 
676 /// Darwin - Darwin tool chain for i386 and x86_64.
677 Darwin::Darwin(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
678  : MachO(D, Triple, Args), TargetInitialized(false),
679  CudaInstallation(D, Triple, Args) {}
680 
683 
684  // Darwin always preprocesses assembly files (unless -x is used explicitly).
685  if (Ty == types::TY_PP_Asm)
686  return types::TY_Asm;
687 
688  return Ty;
689 }
690 
691 bool MachO::HasNativeLLVMSupport() const { return true; }
692 
694  // Default to use libc++ on OS X 10.9+ and iOS 7+.
695  if ((isTargetMacOS() && !isMacosxVersionLT(10, 9)) ||
696  (isTargetIOSBased() && !isIPhoneOSVersionLT(7, 0)) ||
698  return ToolChain::CST_Libcxx;
699 
701 }
702 
703 /// Darwin provides an ARC runtime starting in MacOS X 10.7 and iOS 5.0.
704 ObjCRuntime Darwin::getDefaultObjCRuntime(bool isNonFragile) const {
705  if (isTargetWatchOSBased())
707  if (isTargetIOSBased())
709  if (isNonFragile)
712 }
713 
714 /// Darwin provides a blocks runtime starting in MacOS X 10.6 and iOS 3.2.
716  if (isTargetWatchOSBased())
717  return true;
718  else if (isTargetIOSBased())
719  return !isIPhoneOSVersionLT(3, 2);
720  else {
721  assert(isTargetMacOS() && "unexpected darwin target");
722  return !isMacosxVersionLT(10, 6);
723  }
724 }
725 
726 void Darwin::AddCudaIncludeArgs(const ArgList &DriverArgs,
727  ArgStringList &CC1Args) const {
728  CudaInstallation.AddCudaIncludeArgs(DriverArgs, CC1Args);
729 }
730 
731 // This is just a MachO name translation routine and there's no
732 // way to join this into ARMTargetParser without breaking all
733 // other assumptions. Maybe MachO should consider standardising
734 // their nomenclature.
735 static const char *ArmMachOArchName(StringRef Arch) {
736  return llvm::StringSwitch<const char *>(Arch)
737  .Case("armv6k", "armv6")
738  .Case("armv6m", "armv6m")
739  .Case("armv5tej", "armv5")
740  .Case("xscale", "xscale")
741  .Case("armv4t", "armv4t")
742  .Case("armv7", "armv7")
743  .Cases("armv7a", "armv7-a", "armv7")
744  .Cases("armv7r", "armv7-r", "armv7")
745  .Cases("armv7em", "armv7e-m", "armv7em")
746  .Cases("armv7k", "armv7-k", "armv7k")
747  .Cases("armv7m", "armv7-m", "armv7m")
748  .Cases("armv7s", "armv7-s", "armv7s")
749  .Default(nullptr);
750 }
751 
752 static const char *ArmMachOArchNameCPU(StringRef CPU) {
753  llvm::ARM::ArchKind ArchKind = llvm::ARM::parseCPUArch(CPU);
754  if (ArchKind == llvm::ARM::ArchKind::INVALID)
755  return nullptr;
756  StringRef Arch = llvm::ARM::getArchName(ArchKind);
757 
758  // FIXME: Make sure this MachO triple mangling is really necessary.
759  // ARMv5* normalises to ARMv5.
760  if (Arch.startswith("armv5"))
761  Arch = Arch.substr(0, 5);
762  // ARMv6*, except ARMv6M, normalises to ARMv6.
763  else if (Arch.startswith("armv6") && !Arch.endswith("6m"))
764  Arch = Arch.substr(0, 5);
765  // ARMv7A normalises to ARMv7.
766  else if (Arch.endswith("v7a"))
767  Arch = Arch.substr(0, 5);
768  return Arch.data();
769 }
770 
771 StringRef MachO::getMachOArchName(const ArgList &Args) const {
772  switch (getTriple().getArch()) {
773  default:
775 
776  case llvm::Triple::aarch64:
777  return "arm64";
778 
779  case llvm::Triple::thumb:
780  case llvm::Triple::arm:
781  if (const Arg *A = Args.getLastArg(clang::driver::options::OPT_march_EQ))
782  if (const char *Arch = ArmMachOArchName(A->getValue()))
783  return Arch;
784 
785  if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
786  if (const char *Arch = ArmMachOArchNameCPU(A->getValue()))
787  return Arch;
788 
789  return "arm";
790  }
791 }
792 
794 
796 
797 std::string Darwin::ComputeEffectiveClangTriple(const ArgList &Args,
798  types::ID InputType) const {
799  llvm::Triple Triple(ComputeLLVMTriple(Args, InputType));
800 
801  // If the target isn't initialized (e.g., an unknown Darwin platform, return
802  // the default triple).
803  if (!isTargetInitialized())
804  return Triple.getTriple();
805 
806  SmallString<16> Str;
807  if (isTargetWatchOSBased())
808  Str += "watchos";
809  else if (isTargetTvOSBased())
810  Str += "tvos";
811  else if (isTargetIOSBased())
812  Str += "ios";
813  else
814  Str += "macosx";
815  Str += getTargetVersion().getAsString();
816  Triple.setOSName(Str);
817 
818  return Triple.getTriple();
819 }
820 
822  switch (AC) {
824  if (!Lipo)
825  Lipo.reset(new tools::darwin::Lipo(*this));
826  return Lipo.get();
828  if (!Dsymutil)
829  Dsymutil.reset(new tools::darwin::Dsymutil(*this));
830  return Dsymutil.get();
832  if (!VerifyDebug)
833  VerifyDebug.reset(new tools::darwin::VerifyDebug(*this));
834  return VerifyDebug.get();
835  default:
836  return ToolChain::getTool(AC);
837  }
838 }
839 
840 Tool *MachO::buildLinker() const { return new tools::darwin::Linker(*this); }
841 
843  return new tools::darwin::Assembler(*this);
844 }
845 
846 DarwinClang::DarwinClang(const Driver &D, const llvm::Triple &Triple,
847  const ArgList &Args)
848  : Darwin(D, Triple, Args) {}
849 
850 void DarwinClang::addClangWarningOptions(ArgStringList &CC1Args) const {
851  // For modern targets, promote certain warnings to errors.
852  if (isTargetWatchOSBased() || getTriple().isArch64Bit()) {
853  // Always enable -Wdeprecated-objc-isa-usage and promote it
854  // to an error.
855  CC1Args.push_back("-Wdeprecated-objc-isa-usage");
856  CC1Args.push_back("-Werror=deprecated-objc-isa-usage");
857 
858  // For iOS and watchOS, also error about implicit function declarations,
859  // as that can impact calling conventions.
860  if (!isTargetMacOS())
861  CC1Args.push_back("-Werror=implicit-function-declaration");
862  }
863 }
864 
865 void DarwinClang::AddLinkARCArgs(const ArgList &Args,
866  ArgStringList &CmdArgs) const {
867  // Avoid linking compatibility stubs on i386 mac.
868  if (isTargetMacOS() && getArch() == llvm::Triple::x86)
869  return;
870 
871  ObjCRuntime runtime = getDefaultObjCRuntime(/*nonfragile*/ true);
872 
873  if ((runtime.hasNativeARC() || !isObjCAutoRefCount(Args)) &&
874  runtime.hasSubscripting())
875  return;
876 
877  CmdArgs.push_back("-force_load");
878  SmallString<128> P(getDriver().ClangExecutable);
879  llvm::sys::path::remove_filename(P); // 'clang'
880  llvm::sys::path::remove_filename(P); // 'bin'
881  llvm::sys::path::append(P, "lib", "arc", "libarclite_");
882  // Mash in the platform.
884  P += "watchsimulator";
885  else if (isTargetWatchOS())
886  P += "watchos";
887  else if (isTargetTvOSSimulator())
888  P += "appletvsimulator";
889  else if (isTargetTvOS())
890  P += "appletvos";
891  else if (isTargetIOSSimulator())
892  P += "iphonesimulator";
893  else if (isTargetIPhoneOS())
894  P += "iphoneos";
895  else
896  P += "macosx";
897  P += ".a";
898 
899  CmdArgs.push_back(Args.MakeArgString(P));
900 }
901 
903  // Default to use DWARF 2 on OS X 10.10 / iOS 8 and lower.
904  if ((isTargetMacOS() && isMacosxVersionLT(10, 11)) ||
906  return 2;
907  return 4;
908 }
909 
910 void MachO::AddLinkRuntimeLib(const ArgList &Args, ArgStringList &CmdArgs,
911  StringRef Component, RuntimeLinkOptions Opts,
912  bool IsShared) const {
913  SmallString<64> DarwinLibName = StringRef("libclang_rt.");
914  // an Darwin the builtins compomnent is not in the library name
915  if (Component != "builtins") {
916  DarwinLibName += Component;
917  if (!(Opts & RLO_IsEmbedded))
918  DarwinLibName += "_";
919  DarwinLibName += getOSLibraryNameSuffix();
920  } else
921  DarwinLibName += getOSLibraryNameSuffix(true);
922 
923  DarwinLibName += IsShared ? "_dynamic.dylib" : ".a";
924  SmallString<128> Dir(getDriver().ResourceDir);
925  llvm::sys::path::append(
926  Dir, "lib", (Opts & RLO_IsEmbedded) ? "macho_embedded" : "darwin");
927 
928  SmallString<128> P(Dir);
929  llvm::sys::path::append(P, DarwinLibName);
930 
931  // For now, allow missing resource libraries to support developers who may
932  // not have compiler-rt checked out or integrated into their build (unless
933  // we explicitly force linking with this library).
934  if ((Opts & RLO_AlwaysLink) || getVFS().exists(P)) {
935  const char *LibArg = Args.MakeArgString(P);
936  if (Opts & RLO_FirstLink)
937  CmdArgs.insert(CmdArgs.begin(), LibArg);
938  else
939  CmdArgs.push_back(LibArg);
940  }
941 
942  // Adding the rpaths might negatively interact when other rpaths are involved,
943  // so we should make sure we add the rpaths last, after all user-specified
944  // rpaths. This is currently true from this place, but we need to be
945  // careful if this function is ever called before user's rpaths are emitted.
946  if (Opts & RLO_AddRPath) {
947  assert(DarwinLibName.endswith(".dylib") && "must be a dynamic library");
948 
949  // Add @executable_path to rpath to support having the dylib copied with
950  // the executable.
951  CmdArgs.push_back("-rpath");
952  CmdArgs.push_back("@executable_path");
953 
954  // Add the path to the resource dir to rpath to support using the dylib
955  // from the default location without copying.
956  CmdArgs.push_back("-rpath");
957  CmdArgs.push_back(Args.MakeArgString(Dir));
958  }
959 }
960 
961 StringRef Darwin::getPlatformFamily() const {
962  switch (TargetPlatform) {
963  case DarwinPlatformKind::MacOS:
964  return "MacOSX";
965  case DarwinPlatformKind::IPhoneOS:
966  return "iPhone";
967  case DarwinPlatformKind::TvOS:
968  return "AppleTV";
969  case DarwinPlatformKind::WatchOS:
970  return "Watch";
971  }
972  llvm_unreachable("Unsupported platform");
973 }
974 
975 StringRef Darwin::getSDKName(StringRef isysroot) {
976  // Assume SDK has path: SOME_PATH/SDKs/PlatformXX.YY.sdk
977  llvm::sys::path::const_iterator SDKDir;
978  auto BeginSDK = llvm::sys::path::begin(isysroot);
979  auto EndSDK = llvm::sys::path::end(isysroot);
980  for (auto IT = BeginSDK; IT != EndSDK; ++IT) {
981  StringRef SDK = *IT;
982  if (SDK.endswith(".sdk"))
983  return SDK.slice(0, SDK.size() - 4);
984  }
985  return "";
986 }
987 
988 StringRef Darwin::getOSLibraryNameSuffix(bool IgnoreSim) const {
989  switch (TargetPlatform) {
990  case DarwinPlatformKind::MacOS:
991  return "osx";
992  case DarwinPlatformKind::IPhoneOS:
993  return TargetEnvironment == NativeEnvironment || IgnoreSim ? "ios"
994  : "iossim";
995  case DarwinPlatformKind::TvOS:
996  return TargetEnvironment == NativeEnvironment || IgnoreSim ? "tvos"
997  : "tvossim";
998  case DarwinPlatformKind::WatchOS:
999  return TargetEnvironment == NativeEnvironment || IgnoreSim ? "watchos"
1000  : "watchossim";
1001  }
1002  llvm_unreachable("Unsupported platform");
1003 }
1004 
1005 /// Check if the link command contains a symbol export directive.
1006 static bool hasExportSymbolDirective(const ArgList &Args) {
1007  for (Arg *A : Args) {
1008  if (A->getOption().matches(options::OPT_exported__symbols__list))
1009  return true;
1010  if (!A->getOption().matches(options::OPT_Wl_COMMA) &&
1011  !A->getOption().matches(options::OPT_Xlinker))
1012  continue;
1013  if (A->containsValue("-exported_symbols_list") ||
1014  A->containsValue("-exported_symbol"))
1015  return true;
1016  }
1017  return false;
1018 }
1019 
1020 /// Add an export directive for \p Symbol to the link command.
1021 static void addExportedSymbol(ArgStringList &CmdArgs, const char *Symbol) {
1022  CmdArgs.push_back("-exported_symbol");
1023  CmdArgs.push_back(Symbol);
1024 }
1025 
1026 void Darwin::addProfileRTLibs(const ArgList &Args,
1027  ArgStringList &CmdArgs) const {
1028  if (!needsProfileRT(Args)) return;
1029 
1030  AddLinkRuntimeLib(Args, CmdArgs, "profile",
1032 
1033  // If we have a symbol export directive and we're linking in the profile
1034  // runtime, automatically export symbols necessary to implement some of the
1035  // runtime's functionality.
1036  if (hasExportSymbolDirective(Args)) {
1037  addExportedSymbol(CmdArgs, "___llvm_profile_filename");
1038  addExportedSymbol(CmdArgs, "___llvm_profile_raw_version");
1039  addExportedSymbol(CmdArgs, "_lprofCurFilename");
1040  }
1041 }
1042 
1043 void DarwinClang::AddLinkSanitizerLibArgs(const ArgList &Args,
1044  ArgStringList &CmdArgs,
1045  StringRef Sanitizer,
1046  bool Shared) const {
1047  auto RLO = RuntimeLinkOptions(RLO_AlwaysLink | (Shared ? RLO_AddRPath : 0U));
1048  AddLinkRuntimeLib(Args, CmdArgs, Sanitizer, RLO, Shared);
1049 }
1050 
1052  const ArgList &Args) const {
1053  if (Arg* A = Args.getLastArg(options::OPT_rtlib_EQ)) {
1054  StringRef Value = A->getValue();
1055  if (Value != "compiler-rt")
1056  getDriver().Diag(clang::diag::err_drv_unsupported_rtlib_for_platform)
1057  << Value << "darwin";
1058  }
1059 
1061 }
1062 
1063 void DarwinClang::AddLinkRuntimeLibArgs(const ArgList &Args,
1064  ArgStringList &CmdArgs) const {
1065  // Call once to ensure diagnostic is printed if wrong value was specified
1066  GetRuntimeLibType(Args);
1067 
1068  // Darwin doesn't support real static executables, don't link any runtime
1069  // libraries with -static.
1070  if (Args.hasArg(options::OPT_static) ||
1071  Args.hasArg(options::OPT_fapple_kext) ||
1072  Args.hasArg(options::OPT_mkernel))
1073  return;
1074 
1075  // Reject -static-libgcc for now, we can deal with this when and if someone
1076  // cares. This is useful in situations where someone wants to statically link
1077  // something like libstdc++, and needs its runtime support routines.
1078  if (const Arg *A = Args.getLastArg(options::OPT_static_libgcc)) {
1079  getDriver().Diag(diag::err_drv_unsupported_opt) << A->getAsString(Args);
1080  return;
1081  }
1082 
1083  const SanitizerArgs &Sanitize = getSanitizerArgs();
1084  if (Sanitize.needsAsanRt())
1085  AddLinkSanitizerLibArgs(Args, CmdArgs, "asan");
1086  if (Sanitize.needsLsanRt())
1087  AddLinkSanitizerLibArgs(Args, CmdArgs, "lsan");
1088  if (Sanitize.needsUbsanRt())
1089  AddLinkSanitizerLibArgs(Args, CmdArgs,
1090  Sanitize.requiresMinimalRuntime() ? "ubsan_minimal"
1091  : "ubsan",
1092  Sanitize.needsSharedRt());
1093  if (Sanitize.needsTsanRt())
1094  AddLinkSanitizerLibArgs(Args, CmdArgs, "tsan");
1095  if (Sanitize.needsFuzzer() && !Args.hasArg(options::OPT_dynamiclib)) {
1096  AddLinkSanitizerLibArgs(Args, CmdArgs, "fuzzer", /*shared=*/false);
1097 
1098  // Libfuzzer is written in C++ and requires libcxx.
1099  AddCXXStdlibLibArgs(Args, CmdArgs);
1100  }
1101  if (Sanitize.needsStatsRt()) {
1102  AddLinkRuntimeLib(Args, CmdArgs, "stats_client", RLO_AlwaysLink);
1103  AddLinkSanitizerLibArgs(Args, CmdArgs, "stats");
1104  }
1105  if (Sanitize.needsEsanRt())
1106  AddLinkSanitizerLibArgs(Args, CmdArgs, "esan");
1107 
1108  const XRayArgs &XRay = getXRayArgs();
1109  if (XRay.needsXRayRt()) {
1110  AddLinkRuntimeLib(Args, CmdArgs, "xray");
1111  AddLinkRuntimeLib(Args, CmdArgs, "xray-basic");
1112  AddLinkRuntimeLib(Args, CmdArgs, "xray-fdr");
1113  }
1114 
1115  // Otherwise link libSystem, then the dynamic runtime library, and finally any
1116  // target specific static runtime library.
1117  CmdArgs.push_back("-lSystem");
1118 
1119  // Select the dynamic runtime library and the target specific static library.
1120  if (isTargetIOSBased()) {
1121  // If we are compiling as iOS / simulator, don't attempt to link libgcc_s.1,
1122  // it never went into the SDK.
1123  // Linking against libgcc_s.1 isn't needed for iOS 5.0+
1124  if (isIPhoneOSVersionLT(5, 0) && !isTargetIOSSimulator() &&
1125  getTriple().getArch() != llvm::Triple::aarch64)
1126  CmdArgs.push_back("-lgcc_s.1");
1127  }
1128  AddLinkRuntimeLib(Args, CmdArgs, "builtins");
1129 }
1130 
1131 /// Returns the most appropriate macOS target version for the current process.
1132 ///
1133 /// If the macOS SDK version is the same or earlier than the system version,
1134 /// then the SDK version is returned. Otherwise the system version is returned.
1135 static std::string getSystemOrSDKMacOSVersion(StringRef MacOSSDKVersion) {
1136  unsigned Major, Minor, Micro;
1137  llvm::Triple SystemTriple(llvm::sys::getProcessTriple());
1138  if (!SystemTriple.isMacOSX())
1139  return MacOSSDKVersion;
1140  SystemTriple.getMacOSXVersion(Major, Minor, Micro);
1141  VersionTuple SystemVersion(Major, Minor, Micro);
1142  bool HadExtra;
1143  if (!Driver::GetReleaseVersion(MacOSSDKVersion, Major, Minor, Micro,
1144  HadExtra))
1145  return MacOSSDKVersion;
1146  VersionTuple SDKVersion(Major, Minor, Micro);
1147  if (SDKVersion > SystemVersion)
1148  return SystemVersion.getAsString();
1149  return MacOSSDKVersion;
1150 }
1151 
1152 namespace {
1153 
1154 /// The Darwin OS that was selected or inferred from arguments / environment.
1155 struct DarwinPlatform {
1156  enum SourceKind {
1157  /// The OS was specified using the -target argument.
1158  TargetArg,
1159  /// The OS was specified using the -m<os>-version-min argument.
1160  OSVersionArg,
1161  /// The OS was specified using the OS_DEPLOYMENT_TARGET environment.
1162  DeploymentTargetEnv,
1163  /// The OS was inferred from the SDK.
1164  InferredFromSDK,
1165  /// The OS was inferred from the -arch.
1166  InferredFromArch
1167  };
1168 
1171 
1172  DarwinPlatformKind getPlatform() const { return Platform; }
1173 
1174  DarwinEnvironmentKind getEnvironment() const { return Environment; }
1175 
1176  void setEnvironment(DarwinEnvironmentKind Kind) {
1177  Environment = Kind;
1178  InferSimulatorFromArch = false;
1179  }
1180 
1181  StringRef getOSVersion() const {
1182  if (Kind == OSVersionArg)
1183  return Argument->getValue();
1184  return OSVersion;
1185  }
1186 
1187  void setOSVersion(StringRef S) {
1188  assert(Kind == TargetArg && "Unexpected kind!");
1189  OSVersion = S;
1190  }
1191 
1192  bool hasOSVersion() const { return HasOSVersion; }
1193 
1194  /// Returns true if the target OS was explicitly specified.
1195  bool isExplicitlySpecified() const { return Kind <= DeploymentTargetEnv; }
1196 
1197  /// Returns true if the simulator environment can be inferred from the arch.
1198  bool canInferSimulatorFromArch() const { return InferSimulatorFromArch; }
1199 
1200  /// Adds the -m<os>-version-min argument to the compiler invocation.
1201  void addOSVersionMinArgument(DerivedArgList &Args, const OptTable &Opts) {
1202  if (Argument)
1203  return;
1204  assert(Kind != TargetArg && Kind != OSVersionArg && "Invalid kind");
1205  options::ID Opt;
1206  switch (Platform) {
1207  case DarwinPlatformKind::MacOS:
1208  Opt = options::OPT_mmacosx_version_min_EQ;
1209  break;
1210  case DarwinPlatformKind::IPhoneOS:
1211  Opt = options::OPT_miphoneos_version_min_EQ;
1212  break;
1213  case DarwinPlatformKind::TvOS:
1214  Opt = options::OPT_mtvos_version_min_EQ;
1215  break;
1216  case DarwinPlatformKind::WatchOS:
1217  Opt = options::OPT_mwatchos_version_min_EQ;
1218  break;
1219  }
1220  Argument = Args.MakeJoinedArg(nullptr, Opts.getOption(Opt), OSVersion);
1221  Args.append(Argument);
1222  }
1223 
1224  /// Returns the OS version with the argument / environment variable that
1225  /// specified it.
1226  std::string getAsString(DerivedArgList &Args, const OptTable &Opts) {
1227  switch (Kind) {
1228  case TargetArg:
1229  case OSVersionArg:
1230  case InferredFromSDK:
1231  case InferredFromArch:
1232  assert(Argument && "OS version argument not yet inferred");
1233  return Argument->getAsString(Args);
1234  case DeploymentTargetEnv:
1235  return (llvm::Twine(EnvVarName) + "=" + OSVersion).str();
1236  }
1237  llvm_unreachable("Unsupported Darwin Source Kind");
1238  }
1239 
1240  static DarwinPlatform createFromTarget(const llvm::Triple &TT,
1241  StringRef OSVersion, Arg *A) {
1242  DarwinPlatform Result(TargetArg, getPlatformFromOS(TT.getOS()), OSVersion,
1243  A);
1244  switch (TT.getEnvironment()) {
1245  case llvm::Triple::Simulator:
1246  Result.Environment = DarwinEnvironmentKind::Simulator;
1247  break;
1248  default:
1249  break;
1250  }
1251  unsigned Major, Minor, Micro;
1252  TT.getOSVersion(Major, Minor, Micro);
1253  if (Major == 0)
1254  Result.HasOSVersion = false;
1255  return Result;
1256  }
1257  static DarwinPlatform createOSVersionArg(DarwinPlatformKind Platform,
1258  Arg *A) {
1259  return DarwinPlatform(OSVersionArg, Platform, A);
1260  }
1261  static DarwinPlatform createDeploymentTargetEnv(DarwinPlatformKind Platform,
1262  StringRef EnvVarName,
1263  StringRef Value) {
1264  DarwinPlatform Result(DeploymentTargetEnv, Platform, Value);
1265  Result.EnvVarName = EnvVarName;
1266  return Result;
1267  }
1268  static DarwinPlatform createFromSDK(DarwinPlatformKind Platform,
1269  StringRef Value,
1270  bool IsSimulator = false) {
1271  DarwinPlatform Result(InferredFromSDK, Platform, Value);
1272  if (IsSimulator)
1273  Result.Environment = DarwinEnvironmentKind::Simulator;
1274  Result.InferSimulatorFromArch = false;
1275  return Result;
1276  }
1277  static DarwinPlatform createFromArch(llvm::Triple::OSType OS,
1278  StringRef Value) {
1279  return DarwinPlatform(InferredFromArch, getPlatformFromOS(OS), Value);
1280  }
1281 
1282 private:
1283  DarwinPlatform(SourceKind Kind, DarwinPlatformKind Platform, Arg *Argument)
1284  : Kind(Kind), Platform(Platform), Argument(Argument) {}
1285  DarwinPlatform(SourceKind Kind, DarwinPlatformKind Platform, StringRef Value,
1286  Arg *Argument = nullptr)
1287  : Kind(Kind), Platform(Platform), OSVersion(Value), Argument(Argument) {}
1288 
1289  static DarwinPlatformKind getPlatformFromOS(llvm::Triple::OSType OS) {
1290  switch (OS) {
1291  case llvm::Triple::Darwin:
1292  case llvm::Triple::MacOSX:
1293  return DarwinPlatformKind::MacOS;
1294  case llvm::Triple::IOS:
1295  return DarwinPlatformKind::IPhoneOS;
1296  case llvm::Triple::TvOS:
1297  return DarwinPlatformKind::TvOS;
1298  case llvm::Triple::WatchOS:
1299  return DarwinPlatformKind::WatchOS;
1300  default:
1301  llvm_unreachable("Unable to infer Darwin variant");
1302  }
1303  }
1304 
1305  SourceKind Kind;
1306  DarwinPlatformKind Platform;
1307  DarwinEnvironmentKind Environment = DarwinEnvironmentKind::NativeEnvironment;
1308  std::string OSVersion;
1309  bool HasOSVersion = true, InferSimulatorFromArch = true;
1310  Arg *Argument;
1311  StringRef EnvVarName;
1312 };
1313 
1314 /// Returns the deployment target that's specified using the -m<os>-version-min
1315 /// argument.
1317 getDeploymentTargetFromOSVersionArg(DerivedArgList &Args,
1318  const Driver &TheDriver) {
1319  Arg *OSXVersion = Args.getLastArg(options::OPT_mmacosx_version_min_EQ);
1320  Arg *iOSVersion = Args.getLastArg(options::OPT_miphoneos_version_min_EQ,
1321  options::OPT_mios_simulator_version_min_EQ);
1322  Arg *TvOSVersion =
1323  Args.getLastArg(options::OPT_mtvos_version_min_EQ,
1324  options::OPT_mtvos_simulator_version_min_EQ);
1325  Arg *WatchOSVersion =
1326  Args.getLastArg(options::OPT_mwatchos_version_min_EQ,
1327  options::OPT_mwatchos_simulator_version_min_EQ);
1328  if (OSXVersion) {
1329  if (iOSVersion || TvOSVersion || WatchOSVersion) {
1330  TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
1331  << OSXVersion->getAsString(Args)
1332  << (iOSVersion ? iOSVersion
1333  : TvOSVersion ? TvOSVersion : WatchOSVersion)
1334  ->getAsString(Args);
1335  }
1336  return DarwinPlatform::createOSVersionArg(Darwin::MacOS, OSXVersion);
1337  } else if (iOSVersion) {
1338  if (TvOSVersion || WatchOSVersion) {
1339  TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
1340  << iOSVersion->getAsString(Args)
1341  << (TvOSVersion ? TvOSVersion : WatchOSVersion)->getAsString(Args);
1342  }
1343  return DarwinPlatform::createOSVersionArg(Darwin::IPhoneOS, iOSVersion);
1344  } else if (TvOSVersion) {
1345  if (WatchOSVersion) {
1346  TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
1347  << TvOSVersion->getAsString(Args)
1348  << WatchOSVersion->getAsString(Args);
1349  }
1350  return DarwinPlatform::createOSVersionArg(Darwin::TvOS, TvOSVersion);
1351  } else if (WatchOSVersion)
1352  return DarwinPlatform::createOSVersionArg(Darwin::WatchOS, WatchOSVersion);
1353  return None;
1354 }
1355 
1356 /// Returns the deployment target that's specified using the
1357 /// OS_DEPLOYMENT_TARGET environment variable.
1359 getDeploymentTargetFromEnvironmentVariables(const Driver &TheDriver,
1360  const llvm::Triple &Triple) {
1361  std::string Targets[Darwin::LastDarwinPlatform + 1];
1362  const char *EnvVars[] = {
1363  "MACOSX_DEPLOYMENT_TARGET",
1364  "IPHONEOS_DEPLOYMENT_TARGET",
1365  "TVOS_DEPLOYMENT_TARGET",
1366  "WATCHOS_DEPLOYMENT_TARGET",
1367  };
1368  static_assert(llvm::array_lengthof(EnvVars) == Darwin::LastDarwinPlatform + 1,
1369  "Missing platform");
1370  for (const auto &I : llvm::enumerate(llvm::makeArrayRef(EnvVars))) {
1371  if (char *Env = ::getenv(I.value()))
1372  Targets[I.index()] = Env;
1373  }
1374 
1375  // Do not allow conflicts with the watchOS target.
1376  if (!Targets[Darwin::WatchOS].empty() &&
1377  (!Targets[Darwin::IPhoneOS].empty() || !Targets[Darwin::TvOS].empty())) {
1378  TheDriver.Diag(diag::err_drv_conflicting_deployment_targets)
1379  << "WATCHOS_DEPLOYMENT_TARGET"
1380  << (!Targets[Darwin::IPhoneOS].empty() ? "IPHONEOS_DEPLOYMENT_TARGET"
1381  : "TVOS_DEPLOYMENT_TARGET");
1382  }
1383 
1384  // Do not allow conflicts with the tvOS target.
1385  if (!Targets[Darwin::TvOS].empty() && !Targets[Darwin::IPhoneOS].empty()) {
1386  TheDriver.Diag(diag::err_drv_conflicting_deployment_targets)
1387  << "TVOS_DEPLOYMENT_TARGET"
1388  << "IPHONEOS_DEPLOYMENT_TARGET";
1389  }
1390 
1391  // Allow conflicts among OSX and iOS for historical reasons, but choose the
1392  // default platform.
1393  if (!Targets[Darwin::MacOS].empty() &&
1394  (!Targets[Darwin::IPhoneOS].empty() ||
1395  !Targets[Darwin::WatchOS].empty() || !Targets[Darwin::TvOS].empty())) {
1396  if (Triple.getArch() == llvm::Triple::arm ||
1397  Triple.getArch() == llvm::Triple::aarch64 ||
1398  Triple.getArch() == llvm::Triple::thumb)
1399  Targets[Darwin::MacOS] = "";
1400  else
1401  Targets[Darwin::IPhoneOS] = Targets[Darwin::WatchOS] =
1402  Targets[Darwin::TvOS] = "";
1403  }
1404 
1405  for (const auto &Target : llvm::enumerate(llvm::makeArrayRef(Targets))) {
1406  if (!Target.value().empty())
1407  return DarwinPlatform::createDeploymentTargetEnv(
1408  (Darwin::DarwinPlatformKind)Target.index(), EnvVars[Target.index()],
1409  Target.value());
1410  }
1411  return None;
1412 }
1413 
1414 /// Tries to infer the deployment target from the SDK specified by -isysroot
1415 /// (or SDKROOT).
1416 Optional<DarwinPlatform> inferDeploymentTargetFromSDK(DerivedArgList &Args) {
1417  const Arg *A = Args.getLastArg(options::OPT_isysroot);
1418  if (!A)
1419  return None;
1420  StringRef isysroot = A->getValue();
1421  StringRef SDK = Darwin::getSDKName(isysroot);
1422  if (!SDK.size())
1423  return None;
1424  // Slice the version number out.
1425  // Version number is between the first and the last number.
1426  size_t StartVer = SDK.find_first_of("0123456789");
1427  size_t EndVer = SDK.find_last_of("0123456789");
1428  if (StartVer != StringRef::npos && EndVer > StartVer) {
1429  StringRef Version = SDK.slice(StartVer, EndVer + 1);
1430  if (SDK.startswith("iPhoneOS") || SDK.startswith("iPhoneSimulator"))
1431  return DarwinPlatform::createFromSDK(
1432  Darwin::IPhoneOS, Version,
1433  /*IsSimulator=*/SDK.startswith("iPhoneSimulator"));
1434  else if (SDK.startswith("MacOSX"))
1435  return DarwinPlatform::createFromSDK(Darwin::MacOS,
1436  getSystemOrSDKMacOSVersion(Version));
1437  else if (SDK.startswith("WatchOS") || SDK.startswith("WatchSimulator"))
1438  return DarwinPlatform::createFromSDK(
1439  Darwin::WatchOS, Version,
1440  /*IsSimulator=*/SDK.startswith("WatchSimulator"));
1441  else if (SDK.startswith("AppleTVOS") || SDK.startswith("AppleTVSimulator"))
1442  return DarwinPlatform::createFromSDK(
1443  Darwin::TvOS, Version,
1444  /*IsSimulator=*/SDK.startswith("AppleTVSimulator"));
1445  }
1446  return None;
1447 }
1448 
1449 std::string getOSVersion(llvm::Triple::OSType OS, const llvm::Triple &Triple,
1450  const Driver &TheDriver) {
1451  unsigned Major, Minor, Micro;
1452  llvm::Triple SystemTriple(llvm::sys::getProcessTriple());
1453  switch (OS) {
1454  case llvm::Triple::Darwin:
1455  case llvm::Triple::MacOSX:
1456  // If there is no version specified on triple, and both host and target are
1457  // macos, use the host triple to infer OS version.
1458  if (Triple.isMacOSX() && SystemTriple.isMacOSX() &&
1459  !Triple.getOSMajorVersion())
1460  SystemTriple.getMacOSXVersion(Major, Minor, Micro);
1461  else if (!Triple.getMacOSXVersion(Major, Minor, Micro))
1462  TheDriver.Diag(diag::err_drv_invalid_darwin_version)
1463  << Triple.getOSName();
1464  break;
1465  case llvm::Triple::IOS:
1466  Triple.getiOSVersion(Major, Minor, Micro);
1467  break;
1468  case llvm::Triple::TvOS:
1469  Triple.getOSVersion(Major, Minor, Micro);
1470  break;
1471  case llvm::Triple::WatchOS:
1472  Triple.getWatchOSVersion(Major, Minor, Micro);
1473  break;
1474  default:
1475  llvm_unreachable("Unexpected OS type");
1476  break;
1477  }
1478 
1479  std::string OSVersion;
1480  llvm::raw_string_ostream(OSVersion) << Major << '.' << Minor << '.' << Micro;
1481  return OSVersion;
1482 }
1483 
1484 /// Tries to infer the target OS from the -arch.
1486 inferDeploymentTargetFromArch(DerivedArgList &Args, const Darwin &Toolchain,
1487  const llvm::Triple &Triple,
1488  const Driver &TheDriver) {
1489  llvm::Triple::OSType OSTy = llvm::Triple::UnknownOS;
1490 
1491  StringRef MachOArchName = Toolchain.getMachOArchName(Args);
1492  if (MachOArchName == "armv7" || MachOArchName == "armv7s" ||
1493  MachOArchName == "arm64")
1494  OSTy = llvm::Triple::IOS;
1495  else if (MachOArchName == "armv7k")
1496  OSTy = llvm::Triple::WatchOS;
1497  else if (MachOArchName != "armv6m" && MachOArchName != "armv7m" &&
1498  MachOArchName != "armv7em")
1499  OSTy = llvm::Triple::MacOSX;
1500 
1501  if (OSTy == llvm::Triple::UnknownOS)
1502  return None;
1503  return DarwinPlatform::createFromArch(OSTy,
1504  getOSVersion(OSTy, Triple, TheDriver));
1505 }
1506 
1507 /// Returns the deployment target that's specified using the -target option.
1508 Optional<DarwinPlatform> getDeploymentTargetFromTargetArg(
1509  DerivedArgList &Args, const llvm::Triple &Triple, const Driver &TheDriver) {
1510  if (!Args.hasArg(options::OPT_target))
1511  return None;
1512  if (Triple.getOS() == llvm::Triple::Darwin ||
1513  Triple.getOS() == llvm::Triple::UnknownOS)
1514  return None;
1515  std::string OSVersion = getOSVersion(Triple.getOS(), Triple, TheDriver);
1516  return DarwinPlatform::createFromTarget(Triple, OSVersion,
1517  Args.getLastArg(options::OPT_target));
1518 }
1519 
1520 } // namespace
1521 
1522 void Darwin::AddDeploymentTarget(DerivedArgList &Args) const {
1523  const OptTable &Opts = getDriver().getOpts();
1524 
1525  // Support allowing the SDKROOT environment variable used by xcrun and other
1526  // Xcode tools to define the default sysroot, by making it the default for
1527  // isysroot.
1528  if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
1529  // Warn if the path does not exist.
1530  if (!getVFS().exists(A->getValue()))
1531  getDriver().Diag(clang::diag::warn_missing_sysroot) << A->getValue();
1532  } else {
1533  if (char *env = ::getenv("SDKROOT")) {
1534  // We only use this value as the default if it is an absolute path,
1535  // exists, and it is not the root path.
1536  if (llvm::sys::path::is_absolute(env) && getVFS().exists(env) &&
1537  StringRef(env) != "/") {
1538  Args.append(Args.MakeSeparateArg(
1539  nullptr, Opts.getOption(options::OPT_isysroot), env));
1540  }
1541  }
1542  }
1543 
1544  // The OS and the version can be specified using the -target argument.
1545  Optional<DarwinPlatform> OSTarget =
1546  getDeploymentTargetFromTargetArg(Args, getTriple(), getDriver());
1547  if (OSTarget) {
1548  Optional<DarwinPlatform> OSVersionArgTarget =
1549  getDeploymentTargetFromOSVersionArg(Args, getDriver());
1550  if (OSVersionArgTarget) {
1551  unsigned TargetMajor, TargetMinor, TargetMicro;
1552  bool TargetExtra;
1553  unsigned ArgMajor, ArgMinor, ArgMicro;
1554  bool ArgExtra;
1555  if (OSTarget->getPlatform() != OSVersionArgTarget->getPlatform() ||
1556  (Driver::GetReleaseVersion(OSTarget->getOSVersion(), TargetMajor,
1557  TargetMinor, TargetMicro, TargetExtra) &&
1558  Driver::GetReleaseVersion(OSVersionArgTarget->getOSVersion(),
1559  ArgMajor, ArgMinor, ArgMicro, ArgExtra) &&
1560  (VersionTuple(TargetMajor, TargetMinor, TargetMicro) !=
1561  VersionTuple(ArgMajor, ArgMinor, ArgMicro) ||
1562  TargetExtra != ArgExtra))) {
1563  // Select the OS version from the -m<os>-version-min argument when
1564  // the -target does not include an OS version.
1565  if (OSTarget->getPlatform() == OSVersionArgTarget->getPlatform() &&
1566  !OSTarget->hasOSVersion()) {
1567  OSTarget->setOSVersion(OSVersionArgTarget->getOSVersion());
1568  } else {
1569  // Warn about -m<os>-version-min that doesn't match the OS version
1570  // that's specified in the target.
1571  std::string OSVersionArg =
1572  OSVersionArgTarget->getAsString(Args, Opts);
1573  std::string TargetArg = OSTarget->getAsString(Args, Opts);
1574  getDriver().Diag(clang::diag::warn_drv_overriding_flag_option)
1575  << OSVersionArg << TargetArg;
1576  }
1577  }
1578  }
1579  } else {
1580  // The OS target can be specified using the -m<os>version-min argument.
1581  OSTarget = getDeploymentTargetFromOSVersionArg(Args, getDriver());
1582  // If no deployment target was specified on the command line, check for
1583  // environment defines.
1584  if (!OSTarget) {
1585  OSTarget =
1586  getDeploymentTargetFromEnvironmentVariables(getDriver(), getTriple());
1587  if (OSTarget) {
1588  // Don't infer simulator from the arch when the SDK is also specified.
1589  Optional<DarwinPlatform> SDKTarget = inferDeploymentTargetFromSDK(Args);
1590  if (SDKTarget)
1591  OSTarget->setEnvironment(SDKTarget->getEnvironment());
1592  }
1593  }
1594  // If there is no command-line argument to specify the Target version and
1595  // no environment variable defined, see if we can set the default based
1596  // on -isysroot.
1597  if (!OSTarget)
1598  OSTarget = inferDeploymentTargetFromSDK(Args);
1599  // If no OS targets have been specified, try to guess platform from -target
1600  // or arch name and compute the version from the triple.
1601  if (!OSTarget)
1602  OSTarget =
1603  inferDeploymentTargetFromArch(Args, *this, getTriple(), getDriver());
1604  }
1605 
1606  assert(OSTarget && "Unable to infer Darwin variant");
1607  OSTarget->addOSVersionMinArgument(Args, Opts);
1608  DarwinPlatformKind Platform = OSTarget->getPlatform();
1609 
1610  unsigned Major, Minor, Micro;
1611  bool HadExtra;
1612  // Set the tool chain target information.
1613  if (Platform == MacOS) {
1614  if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1615  Micro, HadExtra) ||
1616  HadExtra || Major != 10 || Minor >= 100 || Micro >= 100)
1617  getDriver().Diag(diag::err_drv_invalid_version_number)
1618  << OSTarget->getAsString(Args, Opts);
1619  } else if (Platform == IPhoneOS) {
1620  if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1621  Micro, HadExtra) ||
1622  HadExtra || Major >= 100 || Minor >= 100 || Micro >= 100)
1623  getDriver().Diag(diag::err_drv_invalid_version_number)
1624  << OSTarget->getAsString(Args, Opts);
1625  ;
1626  // For 32-bit targets, the deployment target for iOS has to be earlier than
1627  // iOS 11.
1628  if (getTriple().isArch32Bit() && Major >= 11) {
1629  // If the deployment target is explicitly specified, print a diagnostic.
1630  if (OSTarget->isExplicitlySpecified()) {
1631  getDriver().Diag(diag::warn_invalid_ios_deployment_target)
1632  << OSTarget->getAsString(Args, Opts);
1633  // Otherwise, set it to 10.99.99.
1634  } else {
1635  Major = 10;
1636  Minor = 99;
1637  Micro = 99;
1638  }
1639  }
1640  } else if (Platform == TvOS) {
1641  if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1642  Micro, HadExtra) ||
1643  HadExtra || Major >= 100 || Minor >= 100 || Micro >= 100)
1644  getDriver().Diag(diag::err_drv_invalid_version_number)
1645  << OSTarget->getAsString(Args, Opts);
1646  } else if (Platform == WatchOS) {
1647  if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1648  Micro, HadExtra) ||
1649  HadExtra || Major >= 10 || Minor >= 100 || Micro >= 100)
1650  getDriver().Diag(diag::err_drv_invalid_version_number)
1651  << OSTarget->getAsString(Args, Opts);
1652  } else
1653  llvm_unreachable("unknown kind of Darwin platform");
1654 
1655  DarwinEnvironmentKind Environment = OSTarget->getEnvironment();
1656  // Recognize iOS targets with an x86 architecture as the iOS simulator.
1657  if (Environment == NativeEnvironment && Platform != MacOS &&
1658  OSTarget->canInferSimulatorFromArch() &&
1659  (getTriple().getArch() == llvm::Triple::x86 ||
1660  getTriple().getArch() == llvm::Triple::x86_64))
1661  Environment = Simulator;
1662 
1663  setTarget(Platform, Environment, Major, Minor, Micro);
1664 
1665  if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
1666  StringRef SDK = getSDKName(A->getValue());
1667  if (SDK.size() > 0) {
1668  size_t StartVer = SDK.find_first_of("0123456789");
1669  StringRef SDKName = SDK.slice(0, StartVer);
1670  if (!SDKName.startswith(getPlatformFamily()))
1671  getDriver().Diag(diag::warn_incompatible_sysroot)
1672  << SDKName << getPlatformFamily();
1673  }
1674  }
1675 }
1676 
1677 void DarwinClang::AddCXXStdlibLibArgs(const ArgList &Args,
1678  ArgStringList &CmdArgs) const {
1680 
1681  switch (Type) {
1682  case ToolChain::CST_Libcxx:
1683  CmdArgs.push_back("-lc++");
1684  break;
1685 
1687  // Unfortunately, -lstdc++ doesn't always exist in the standard search path;
1688  // it was previously found in the gcc lib dir. However, for all the Darwin
1689  // platforms we care about it was -lstdc++.6, so we search for that
1690  // explicitly if we can't see an obvious -lstdc++ candidate.
1691 
1692  // Check in the sysroot first.
1693  if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
1694  SmallString<128> P(A->getValue());
1695  llvm::sys::path::append(P, "usr", "lib", "libstdc++.dylib");
1696 
1697  if (!getVFS().exists(P)) {
1698  llvm::sys::path::remove_filename(P);
1699  llvm::sys::path::append(P, "libstdc++.6.dylib");
1700  if (getVFS().exists(P)) {
1701  CmdArgs.push_back(Args.MakeArgString(P));
1702  return;
1703  }
1704  }
1705  }
1706 
1707  // Otherwise, look in the root.
1708  // FIXME: This should be removed someday when we don't have to care about
1709  // 10.6 and earlier, where /usr/lib/libstdc++.dylib does not exist.
1710  if (!getVFS().exists("/usr/lib/libstdc++.dylib") &&
1711  getVFS().exists("/usr/lib/libstdc++.6.dylib")) {
1712  CmdArgs.push_back("/usr/lib/libstdc++.6.dylib");
1713  return;
1714  }
1715 
1716  // Otherwise, let the linker search.
1717  CmdArgs.push_back("-lstdc++");
1718  break;
1719  }
1720 }
1721 
1722 void DarwinClang::AddCCKextLibArgs(const ArgList &Args,
1723  ArgStringList &CmdArgs) const {
1724  // For Darwin platforms, use the compiler-rt-based support library
1725  // instead of the gcc-provided one (which is also incidentally
1726  // only present in the gcc lib dir, which makes it hard to find).
1727 
1728  SmallString<128> P(getDriver().ResourceDir);
1729  llvm::sys::path::append(P, "lib", "darwin");
1730 
1731  // Use the newer cc_kext for iOS ARM after 6.0.
1732  if (isTargetWatchOS()) {
1733  llvm::sys::path::append(P, "libclang_rt.cc_kext_watchos.a");
1734  } else if (isTargetTvOS()) {
1735  llvm::sys::path::append(P, "libclang_rt.cc_kext_tvos.a");
1736  } else if (isTargetIPhoneOS()) {
1737  llvm::sys::path::append(P, "libclang_rt.cc_kext_ios.a");
1738  } else {
1739  llvm::sys::path::append(P, "libclang_rt.cc_kext.a");
1740  }
1741 
1742  // For now, allow missing resource libraries to support developers who may
1743  // not have compiler-rt checked out or integrated into their build.
1744  if (getVFS().exists(P))
1745  CmdArgs.push_back(Args.MakeArgString(P));
1746 }
1747 
1748 DerivedArgList *MachO::TranslateArgs(const DerivedArgList &Args,
1749  StringRef BoundArch,
1750  Action::OffloadKind) const {
1751  DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
1752  const OptTable &Opts = getDriver().getOpts();
1753 
1754  // FIXME: We really want to get out of the tool chain level argument
1755  // translation business, as it makes the driver functionality much
1756  // more opaque. For now, we follow gcc closely solely for the
1757  // purpose of easily achieving feature parity & testability. Once we
1758  // have something that works, we should reevaluate each translation
1759  // and try to push it down into tool specific logic.
1760 
1761  for (Arg *A : Args) {
1762  if (A->getOption().matches(options::OPT_Xarch__)) {
1763  // Skip this argument unless the architecture matches either the toolchain
1764  // triple arch, or the arch being bound.
1765  llvm::Triple::ArchType XarchArch =
1767  if (!(XarchArch == getArch() ||
1768  (!BoundArch.empty() &&
1769  XarchArch ==
1771  continue;
1772 
1773  Arg *OriginalArg = A;
1774  unsigned Index = Args.getBaseArgs().MakeIndex(A->getValue(1));
1775  unsigned Prev = Index;
1776  std::unique_ptr<Arg> XarchArg(Opts.ParseOneArg(Args, Index));
1777 
1778  // If the argument parsing failed or more than one argument was
1779  // consumed, the -Xarch_ argument's parameter tried to consume
1780  // extra arguments. Emit an error and ignore.
1781  //
1782  // We also want to disallow any options which would alter the
1783  // driver behavior; that isn't going to work in our model. We
1784  // use isDriverOption() as an approximation, although things
1785  // like -O4 are going to slip through.
1786  if (!XarchArg || Index > Prev + 1) {
1787  getDriver().Diag(diag::err_drv_invalid_Xarch_argument_with_args)
1788  << A->getAsString(Args);
1789  continue;
1790  } else if (XarchArg->getOption().hasFlag(options::DriverOption)) {
1791  getDriver().Diag(diag::err_drv_invalid_Xarch_argument_isdriver)
1792  << A->getAsString(Args);
1793  continue;
1794  }
1795 
1796  XarchArg->setBaseArg(A);
1797 
1798  A = XarchArg.release();
1799  DAL->AddSynthesizedArg(A);
1800 
1801  // Linker input arguments require custom handling. The problem is that we
1802  // have already constructed the phase actions, so we can not treat them as
1803  // "input arguments".
1804  if (A->getOption().hasFlag(options::LinkerInput)) {
1805  // Convert the argument into individual Zlinker_input_args.
1806  for (const char *Value : A->getValues()) {
1807  DAL->AddSeparateArg(
1808  OriginalArg, Opts.getOption(options::OPT_Zlinker_input), Value);
1809  }
1810  continue;
1811  }
1812  }
1813 
1814  // Sob. These is strictly gcc compatible for the time being. Apple
1815  // gcc translates options twice, which means that self-expanding
1816  // options add duplicates.
1817  switch ((options::ID)A->getOption().getID()) {
1818  default:
1819  DAL->append(A);
1820  break;
1821 
1822  case options::OPT_mkernel:
1823  case options::OPT_fapple_kext:
1824  DAL->append(A);
1825  DAL->AddFlagArg(A, Opts.getOption(options::OPT_static));
1826  break;
1827 
1828  case options::OPT_dependency_file:
1829  DAL->AddSeparateArg(A, Opts.getOption(options::OPT_MF), A->getValue());
1830  break;
1831 
1832  case options::OPT_gfull:
1833  DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag));
1834  DAL->AddFlagArg(
1835  A, Opts.getOption(options::OPT_fno_eliminate_unused_debug_symbols));
1836  break;
1837 
1838  case options::OPT_gused:
1839  DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag));
1840  DAL->AddFlagArg(
1841  A, Opts.getOption(options::OPT_feliminate_unused_debug_symbols));
1842  break;
1843 
1844  case options::OPT_shared:
1845  DAL->AddFlagArg(A, Opts.getOption(options::OPT_dynamiclib));
1846  break;
1847 
1848  case options::OPT_fconstant_cfstrings:
1849  DAL->AddFlagArg(A, Opts.getOption(options::OPT_mconstant_cfstrings));
1850  break;
1851 
1852  case options::OPT_fno_constant_cfstrings:
1853  DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_constant_cfstrings));
1854  break;
1855 
1856  case options::OPT_Wnonportable_cfstrings:
1857  DAL->AddFlagArg(A,
1858  Opts.getOption(options::OPT_mwarn_nonportable_cfstrings));
1859  break;
1860 
1861  case options::OPT_Wno_nonportable_cfstrings:
1862  DAL->AddFlagArg(
1863  A, Opts.getOption(options::OPT_mno_warn_nonportable_cfstrings));
1864  break;
1865 
1866  case options::OPT_fpascal_strings:
1867  DAL->AddFlagArg(A, Opts.getOption(options::OPT_mpascal_strings));
1868  break;
1869 
1870  case options::OPT_fno_pascal_strings:
1871  DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_pascal_strings));
1872  break;
1873  }
1874  }
1875 
1876  if (getTriple().getArch() == llvm::Triple::x86 ||
1877  getTriple().getArch() == llvm::Triple::x86_64)
1878  if (!Args.hasArgNoClaim(options::OPT_mtune_EQ))
1879  DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_mtune_EQ),
1880  "core2");
1881 
1882  // Add the arch options based on the particular spelling of -arch, to match
1883  // how the driver driver works.
1884  if (!BoundArch.empty()) {
1885  StringRef Name = BoundArch;
1886  const Option MCpu = Opts.getOption(options::OPT_mcpu_EQ);
1887  const Option MArch = Opts.getOption(clang::driver::options::OPT_march_EQ);
1888 
1889  // This code must be kept in sync with LLVM's getArchTypeForDarwinArch,
1890  // which defines the list of which architectures we accept.
1891  if (Name == "ppc")
1892  ;
1893  else if (Name == "ppc601")
1894  DAL->AddJoinedArg(nullptr, MCpu, "601");
1895  else if (Name == "ppc603")
1896  DAL->AddJoinedArg(nullptr, MCpu, "603");
1897  else if (Name == "ppc604")
1898  DAL->AddJoinedArg(nullptr, MCpu, "604");
1899  else if (Name == "ppc604e")
1900  DAL->AddJoinedArg(nullptr, MCpu, "604e");
1901  else if (Name == "ppc750")
1902  DAL->AddJoinedArg(nullptr, MCpu, "750");
1903  else if (Name == "ppc7400")
1904  DAL->AddJoinedArg(nullptr, MCpu, "7400");
1905  else if (Name == "ppc7450")
1906  DAL->AddJoinedArg(nullptr, MCpu, "7450");
1907  else if (Name == "ppc970")
1908  DAL->AddJoinedArg(nullptr, MCpu, "970");
1909 
1910  else if (Name == "ppc64" || Name == "ppc64le")
1911  DAL->AddFlagArg(nullptr, Opts.getOption(options::OPT_m64));
1912 
1913  else if (Name == "i386")
1914  ;
1915  else if (Name == "i486")
1916  DAL->AddJoinedArg(nullptr, MArch, "i486");
1917  else if (Name == "i586")
1918  DAL->AddJoinedArg(nullptr, MArch, "i586");
1919  else if (Name == "i686")
1920  DAL->AddJoinedArg(nullptr, MArch, "i686");
1921  else if (Name == "pentium")
1922  DAL->AddJoinedArg(nullptr, MArch, "pentium");
1923  else if (Name == "pentium2")
1924  DAL->AddJoinedArg(nullptr, MArch, "pentium2");
1925  else if (Name == "pentpro")
1926  DAL->AddJoinedArg(nullptr, MArch, "pentiumpro");
1927  else if (Name == "pentIIm3")
1928  DAL->AddJoinedArg(nullptr, MArch, "pentium2");
1929 
1930  else if (Name == "x86_64")
1931  DAL->AddFlagArg(nullptr, Opts.getOption(options::OPT_m64));
1932  else if (Name == "x86_64h") {
1933  DAL->AddFlagArg(nullptr, Opts.getOption(options::OPT_m64));
1934  DAL->AddJoinedArg(nullptr, MArch, "x86_64h");
1935  }
1936 
1937  else if (Name == "arm")
1938  DAL->AddJoinedArg(nullptr, MArch, "armv4t");
1939  else if (Name == "armv4t")
1940  DAL->AddJoinedArg(nullptr, MArch, "armv4t");
1941  else if (Name == "armv5")
1942  DAL->AddJoinedArg(nullptr, MArch, "armv5tej");
1943  else if (Name == "xscale")
1944  DAL->AddJoinedArg(nullptr, MArch, "xscale");
1945  else if (Name == "armv6")
1946  DAL->AddJoinedArg(nullptr, MArch, "armv6k");
1947  else if (Name == "armv6m")
1948  DAL->AddJoinedArg(nullptr, MArch, "armv6m");
1949  else if (Name == "armv7")
1950  DAL->AddJoinedArg(nullptr, MArch, "armv7a");
1951  else if (Name == "armv7em")
1952  DAL->AddJoinedArg(nullptr, MArch, "armv7em");
1953  else if (Name == "armv7k")
1954  DAL->AddJoinedArg(nullptr, MArch, "armv7k");
1955  else if (Name == "armv7m")
1956  DAL->AddJoinedArg(nullptr, MArch, "armv7m");
1957  else if (Name == "armv7s")
1958  DAL->AddJoinedArg(nullptr, MArch, "armv7s");
1959  }
1960 
1961  return DAL;
1962 }
1963 
1964 void MachO::AddLinkRuntimeLibArgs(const ArgList &Args,
1965  ArgStringList &CmdArgs) const {
1966  // Embedded targets are simple at the moment, not supporting sanitizers and
1967  // with different libraries for each member of the product { static, PIC } x
1968  // { hard-float, soft-float }
1969  llvm::SmallString<32> CompilerRT = StringRef("");
1970  CompilerRT +=
1972  ? "hard"
1973  : "soft";
1974  CompilerRT += Args.hasArg(options::OPT_fPIC) ? "_pic" : "_static";
1975 
1976  AddLinkRuntimeLib(Args, CmdArgs, CompilerRT, RLO_IsEmbedded);
1977 }
1978 
1980  llvm::Triple::OSType OS;
1981 
1982  switch (TargetPlatform) {
1983  case MacOS: // Earlier than 10.13.
1984  OS = llvm::Triple::MacOSX;
1985  break;
1986  case IPhoneOS:
1987  OS = llvm::Triple::IOS;
1988  break;
1989  case TvOS: // Earlier than 11.0.
1990  OS = llvm::Triple::TvOS;
1991  break;
1992  case WatchOS: // Earlier than 4.0.
1993  OS = llvm::Triple::WatchOS;
1994  break;
1995  }
1996 
1998 }
1999 
2000 void Darwin::addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
2001  llvm::opt::ArgStringList &CC1Args,
2002  Action::OffloadKind DeviceOffloadKind) const {
2003  // Pass "-faligned-alloc-unavailable" only when the user hasn't manually
2004  // enabled or disabled aligned allocations.
2005  if (!DriverArgs.hasArgNoClaim(options::OPT_faligned_allocation,
2006  options::OPT_fno_aligned_allocation) &&
2008  CC1Args.push_back("-faligned-alloc-unavailable");
2009 }
2010 
2011 DerivedArgList *
2012 Darwin::TranslateArgs(const DerivedArgList &Args, StringRef BoundArch,
2013  Action::OffloadKind DeviceOffloadKind) const {
2014  // First get the generic Apple args, before moving onto Darwin-specific ones.
2015  DerivedArgList *DAL =
2016  MachO::TranslateArgs(Args, BoundArch, DeviceOffloadKind);
2017  const OptTable &Opts = getDriver().getOpts();
2018 
2019  // If no architecture is bound, none of the translations here are relevant.
2020  if (BoundArch.empty())
2021  return DAL;
2022 
2023  // Add an explicit version min argument for the deployment target. We do this
2024  // after argument translation because -Xarch_ arguments may add a version min
2025  // argument.
2026  AddDeploymentTarget(*DAL);
2027 
2028  // For iOS 6, undo the translation to add -static for -mkernel/-fapple-kext.
2029  // FIXME: It would be far better to avoid inserting those -static arguments,
2030  // but we can't check the deployment target in the translation code until
2031  // it is set here.
2032  if (isTargetWatchOSBased() ||
2033  (isTargetIOSBased() && !isIPhoneOSVersionLT(6, 0))) {
2034  for (ArgList::iterator it = DAL->begin(), ie = DAL->end(); it != ie; ) {
2035  Arg *A = *it;
2036  ++it;
2037  if (A->getOption().getID() != options::OPT_mkernel &&
2038  A->getOption().getID() != options::OPT_fapple_kext)
2039  continue;
2040  assert(it != ie && "unexpected argument translation");
2041  A = *it;
2042  assert(A->getOption().getID() == options::OPT_static &&
2043  "missing expected -static argument");
2044  *it = nullptr;
2045  ++it;
2046  }
2047  }
2048 
2049  if (!Args.getLastArg(options::OPT_stdlib_EQ) &&
2051  DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_stdlib_EQ),
2052  "libc++");
2053 
2054  // Validate the C++ standard library choice.
2056  if (Type == ToolChain::CST_Libcxx) {
2057  // Check whether the target provides libc++.
2058  StringRef where;
2059 
2060  // Complain about targeting iOS < 5.0 in any way.
2061  if (isTargetIOSBased() && isIPhoneOSVersionLT(5, 0))
2062  where = "iOS 5.0";
2063 
2064  if (where != StringRef()) {
2065  getDriver().Diag(clang::diag::err_drv_invalid_libcxx_deployment) << where;
2066  }
2067  }
2068 
2069  auto Arch = tools::darwin::getArchTypeForMachOArchName(BoundArch);
2070  if ((Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb)) {
2071  if (Args.hasFlag(options::OPT_fomit_frame_pointer,
2072  options::OPT_fno_omit_frame_pointer, false))
2073  getDriver().Diag(clang::diag::warn_drv_unsupported_opt_for_target)
2074  << "-fomit-frame-pointer" << BoundArch;
2075  }
2076 
2077  return DAL;
2078 }
2079 
2080 bool MachO::IsUnwindTablesDefault(const ArgList &Args) const {
2081  // Unwind tables are not emitted if -fno-exceptions is supplied (except when
2082  // targeting x86_64).
2083  return getArch() == llvm::Triple::x86_64 ||
2084  (GetExceptionModel(Args) != llvm::ExceptionHandling::SjLj &&
2085  Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
2086  true));
2087 }
2088 
2090  if (const char *S = ::getenv("RC_DEBUG_OPTIONS"))
2091  return S[0] != '\0';
2092  return false;
2093 }
2094 
2095 llvm::ExceptionHandling Darwin::GetExceptionModel(const ArgList &Args) const {
2096  // Darwin uses SjLj exceptions on ARM.
2097  if (getTriple().getArch() != llvm::Triple::arm &&
2098  getTriple().getArch() != llvm::Triple::thumb)
2099  return llvm::ExceptionHandling::None;
2100 
2101  // Only watchOS uses the new DWARF/Compact unwinding method.
2102  llvm::Triple Triple(ComputeLLVMTriple(Args));
2103  if (Triple.isWatchABI())
2104  return llvm::ExceptionHandling::DwarfCFI;
2105 
2106  return llvm::ExceptionHandling::SjLj;
2107 }
2108 
2110  assert(TargetInitialized && "Target not initialized!");
2111  if (isTargetIPhoneOS() && isIPhoneOSVersionLT(6, 0))
2112  return false;
2113  return true;
2114 }
2115 
2116 bool MachO::isPICDefault() const { return true; }
2117 
2118 bool MachO::isPIEDefault() const { return false; }
2119 
2121  return (getArch() == llvm::Triple::x86_64 ||
2122  getArch() == llvm::Triple::aarch64);
2123 }
2124 
2126  // Profiling instrumentation is only supported on x86.
2127  return getArch() == llvm::Triple::x86 || getArch() == llvm::Triple::x86_64;
2128 }
2129 
2130 void Darwin::addMinVersionArgs(const ArgList &Args,
2131  ArgStringList &CmdArgs) const {
2132  VersionTuple TargetVersion = getTargetVersion();
2133 
2134  if (isTargetWatchOS())
2135  CmdArgs.push_back("-watchos_version_min");
2136  else if (isTargetWatchOSSimulator())
2137  CmdArgs.push_back("-watchos_simulator_version_min");
2138  else if (isTargetTvOS())
2139  CmdArgs.push_back("-tvos_version_min");
2140  else if (isTargetTvOSSimulator())
2141  CmdArgs.push_back("-tvos_simulator_version_min");
2142  else if (isTargetIOSSimulator())
2143  CmdArgs.push_back("-ios_simulator_version_min");
2144  else if (isTargetIOSBased())
2145  CmdArgs.push_back("-iphoneos_version_min");
2146  else {
2147  assert(isTargetMacOS() && "unexpected target");
2148  CmdArgs.push_back("-macosx_version_min");
2149  }
2150 
2151  CmdArgs.push_back(Args.MakeArgString(TargetVersion.getAsString()));
2152 }
2153 
2154 void Darwin::addStartObjectFileArgs(const ArgList &Args,
2155  ArgStringList &CmdArgs) const {
2156  // Derived from startfile spec.
2157  if (Args.hasArg(options::OPT_dynamiclib)) {
2158  // Derived from darwin_dylib1 spec.
2159  if (isTargetWatchOSBased()) {
2160  ; // watchOS does not need dylib1.o.
2161  } else if (isTargetIOSSimulator()) {
2162  ; // iOS simulator does not need dylib1.o.
2163  } else if (isTargetIPhoneOS()) {
2164  if (isIPhoneOSVersionLT(3, 1))
2165  CmdArgs.push_back("-ldylib1.o");
2166  } else {
2167  if (isMacosxVersionLT(10, 5))
2168  CmdArgs.push_back("-ldylib1.o");
2169  else if (isMacosxVersionLT(10, 6))
2170  CmdArgs.push_back("-ldylib1.10.5.o");
2171  }
2172  } else {
2173  if (Args.hasArg(options::OPT_bundle)) {
2174  if (!Args.hasArg(options::OPT_static)) {
2175  // Derived from darwin_bundle1 spec.
2176  if (isTargetWatchOSBased()) {
2177  ; // watchOS does not need bundle1.o.
2178  } else if (isTargetIOSSimulator()) {
2179  ; // iOS simulator does not need bundle1.o.
2180  } else if (isTargetIPhoneOS()) {
2181  if (isIPhoneOSVersionLT(3, 1))
2182  CmdArgs.push_back("-lbundle1.o");
2183  } else {
2184  if (isMacosxVersionLT(10, 6))
2185  CmdArgs.push_back("-lbundle1.o");
2186  }
2187  }
2188  } else {
2189  if (Args.hasArg(options::OPT_pg) && SupportsProfiling()) {
2190  if (Args.hasArg(options::OPT_static) ||
2191  Args.hasArg(options::OPT_object) ||
2192  Args.hasArg(options::OPT_preload)) {
2193  CmdArgs.push_back("-lgcrt0.o");
2194  } else {
2195  CmdArgs.push_back("-lgcrt1.o");
2196 
2197  // darwin_crt2 spec is empty.
2198  }
2199  // By default on OS X 10.8 and later, we don't link with a crt1.o
2200  // file and the linker knows to use _main as the entry point. But,
2201  // when compiling with -pg, we need to link with the gcrt1.o file,
2202  // so pass the -no_new_main option to tell the linker to use the
2203  // "start" symbol as the entry point.
2204  if (isTargetMacOS() && !isMacosxVersionLT(10, 8))
2205  CmdArgs.push_back("-no_new_main");
2206  } else {
2207  if (Args.hasArg(options::OPT_static) ||
2208  Args.hasArg(options::OPT_object) ||
2209  Args.hasArg(options::OPT_preload)) {
2210  CmdArgs.push_back("-lcrt0.o");
2211  } else {
2212  // Derived from darwin_crt1 spec.
2213  if (isTargetWatchOSBased()) {
2214  ; // watchOS does not need crt1.o.
2215  } else if (isTargetIOSSimulator()) {
2216  ; // iOS simulator does not need crt1.o.
2217  } else if (isTargetIPhoneOS()) {
2218  if (getArch() == llvm::Triple::aarch64)
2219  ; // iOS does not need any crt1 files for arm64
2220  else if (isIPhoneOSVersionLT(3, 1))
2221  CmdArgs.push_back("-lcrt1.o");
2222  else if (isIPhoneOSVersionLT(6, 0))
2223  CmdArgs.push_back("-lcrt1.3.1.o");
2224  } else {
2225  if (isMacosxVersionLT(10, 5))
2226  CmdArgs.push_back("-lcrt1.o");
2227  else if (isMacosxVersionLT(10, 6))
2228  CmdArgs.push_back("-lcrt1.10.5.o");
2229  else if (isMacosxVersionLT(10, 8))
2230  CmdArgs.push_back("-lcrt1.10.6.o");
2231 
2232  // darwin_crt2 spec is empty.
2233  }
2234  }
2235  }
2236  }
2237  }
2238 
2239  if (!isTargetIPhoneOS() && Args.hasArg(options::OPT_shared_libgcc) &&
2240  !isTargetWatchOS() && isMacosxVersionLT(10, 5)) {
2241  const char *Str = Args.MakeArgString(GetFilePath("crt3.o"));
2242  CmdArgs.push_back(Str);
2243  }
2244 }
2245 
2246 void Darwin::CheckObjCARC() const {
2248  (isTargetMacOS() && !isMacosxVersionLT(10, 6)))
2249  return;
2250  getDriver().Diag(diag::err_arc_unsupported_on_toolchain);
2251 }
2252 
2254  const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64;
2256  Res |= SanitizerKind::Address;
2257  Res |= SanitizerKind::Leak;
2258  Res |= SanitizerKind::Fuzzer;
2259  Res |= SanitizerKind::FuzzerNoLink;
2260  Res |= SanitizerKind::Function;
2261 
2262  // Prior to 10.9, macOS shipped a version of the C++ standard library without
2263  // C++11 support. The same is true of iOS prior to version 5. These OS'es are
2264  // incompatible with -fsanitize=vptr.
2265  if (!(isTargetMacOS() && isMacosxVersionLT(10, 9))
2266  && !(isTargetIPhoneOS() && isIPhoneOSVersionLT(5, 0)))
2267  Res |= SanitizerKind::Vptr;
2268 
2269  if (isTargetMacOS()) {
2270  if (IsX86_64)
2271  Res |= SanitizerKind::Thread;
2272  } else if (isTargetIOSSimulator() || isTargetTvOSSimulator()) {
2273  if (IsX86_64)
2274  Res |= SanitizerKind::Thread;
2275  }
2276  return Res;
2277 }
2278 
2279 void Darwin::printVerboseInfo(raw_ostream &OS) const {
2280  CudaInstallation.print(OS);
2281 }
StringRef getSysRoot() const
Returns the sysroot path.
static bool GetReleaseVersion(StringRef Str, unsigned &Major, unsigned &Minor, unsigned &Micro, bool &HadExtra)
GetReleaseVersion - Parse (([0-9]+)(.
Definition: Driver.cpp:4496
StringRef getMachOArchName(const llvm::opt::ArgList &Args) const
Get the "MachO" arch name for a particular compiler invocation.
Definition: Darwin.cpp:771
virtual std::string ComputeLLVMTriple(const llvm::opt::ArgList &Args, types::ID InputType=types::TY_INVALID) const
ComputeLLVMTriple - Return the LLVM target triple to use, after taking command line arguments into ac...
Definition: ToolChain.cpp:512
bool SupportsEmbeddedBitcode() const override
SupportsEmbeddedBitcode - Does this tool chain support embedded bitcode.
Definition: Darwin.cpp:2109
bool isMacosxVersionLT(unsigned V0, unsigned V1=0, unsigned V2=0) const
Definition: Darwin.h:411
Tool * buildAssembler() const override
Definition: Darwin.cpp:842
std::string GetTemporaryPath(StringRef Prefix, StringRef Suffix) const
GetTemporaryPath - Return the pathname of a temporary file to use as part of compilation; the file wi...
Definition: Driver.cpp:4293
Link the library in even if it can&#39;t be found in the VFS.
Definition: Darwin.h:179
Use the embedded runtime from the macho_embedded directory.
Definition: Darwin.h:182
const char * getTypeTempSuffix(ID Id, bool CLMode=false)
getTypeTempSuffix - Return the suffix to use when creating a temp file of this type, or null if unspecified.
Definition: Types.cpp:55
bool UseDwarfDebugFlags() const override
UseDwarfDebugFlags - Embed the compile options to clang into the Dwarf compile unit information...
Definition: Darwin.cpp:2089
StringRef P
bool isUsingLTO() const
Returns true if we are performing any kind of LTO.
Definition: Driver.h:519
Defines types useful for describing an Objective-C runtime.
CXXStdlibType GetDefaultCXXStdlibType() const override
Definition: Darwin.cpp:693
The base class of the type hierarchy.
Definition: Type.h:1415
const XRayArgs & getXRayArgs() const
Definition: ToolChain.cpp:120
void AddLinkRuntimeLib(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, StringRef Component, RuntimeLinkOptions Opts=RuntimeLinkOptions(), bool IsShared=false) const
Add a runtime library to the list of items to link.
Definition: Darwin.cpp:910
bool HasNativeLLVMSupport() const override
HasNativeLTOLinker - Check whether the linker and related tools have native LLVM support.
Definition: Darwin.cpp:691
bool embedBitcodeEnabled() const
Definition: Driver.h:332
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:110
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: Darwin.cpp:421
void addProfileRTLibs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
Add any profiling runtime libraries that are needed.
Definition: Darwin.cpp:1026
FloatABI getARMFloatABI(const ToolChain &TC, const llvm::opt::ArgList &Args)
DarwinEnvironmentKind TargetEnvironment
Definition: Darwin.h:286
CudaInstallationDetector CudaInstallation
Definition: Darwin.h:291
bool TargetInitialized
Whether the information on the target has been initialized.
Definition: Darwin.h:271
void print(raw_ostream &OS) const
Print information about the detected CUDA installation.
Definition: Cuda.cpp:272
bool hasBlocksRuntime() const override
Darwin provides a blocks runtime starting in MacOS X 10.6 and iOS 3.2.
Definition: Darwin.cpp:715
types::ID LookupTypeForExtension(StringRef Ext) const override
LookupTypeForExtension - Return the default language type to use for the given extension.
Definition: Darwin.cpp:681
&#39;macosx-fragile&#39; is the Apple-provided NeXT-derived runtime on Mac OS X platforms that use the fragil...
Definition: ObjCRuntime.h:40
const char * getFilename() const
Definition: InputInfo.h:84
path_list & getProgramPaths()
Definition: ToolChain.h:226
bool isPIEDefault() const override
Test whether this toolchain defaults to PIE.
Definition: Darwin.cpp:2118
bool embedBitcodeMarkerOnly() const
Definition: Driver.h:334
ActionList & getInputs()
Definition: Action.h:143
bool IsUnwindTablesDefault(const llvm::opt::ArgList &Args) const override
IsUnwindTablesDefault - Does this tool chain use -funwind-tables by default.
Definition: Darwin.cpp:2080
StringRef getPlatformFamily() const
Definition: Darwin.cpp:961
std::string Dir
The path the driver executable was in, as invoked from the command line.
Definition: Driver.h:121
Darwin - The base Darwin tool chain.
Definition: Darwin.h:264
void AddLinkRuntimeLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
Add the linker arguments to link the compiler runtime library.
Definition: Darwin.cpp:1063
ObjCRuntime getDefaultObjCRuntime(bool isNonFragile) const override
Darwin provides an ARC runtime starting in MacOS X 10.7 and iOS 5.0.
Definition: Darwin.cpp:704
bool isPICDefault() const override
Test whether this toolchain defaults to PIC.
Definition: Darwin.cpp:2116
Action - Represent an abstract compilation step to perform.
Definition: Action.h:48
static bool needsProfileRT(const llvm::opt::ArgList &Args)
needsProfileRT - returns true if instrumentation profile is on.
Definition: ToolChain.cpp:401
llvm::opt::DerivedArgList * TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef BoundArch, Action::OffloadKind DeviceOffloadKind) const override
TranslateArgs - Create a new derived argument list for any argument translations this ToolChain may w...
Definition: Darwin.cpp:1748
Tool * getTool(Action::ActionClass AC) const override
Definition: Darwin.cpp:821
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:23
static bool hasExportSymbolDirective(const ArgList &Args)
Check if the link command contains a symbol export directive.
Definition: Darwin.cpp:1006
std::string GetFilePath(const char *Name) const
Definition: ToolChain.cpp:423
vfs::FileSystem & getVFS() const
Definition: ToolChain.cpp:102
types::ID getType() const
Definition: Action.h:141
CompileCommand Cmd
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:59
bool needsXRayRt() const
Definition: XRayArgs.h:41
types::ID getType() const
Definition: InputInfo.h:78
SanitizerMask getSupportedSanitizers() const override
Return sanitizers which are available in this toolchain.
Definition: Darwin.cpp:2253
bool isTargetInitialized() const
Definition: Darwin.h:398
void AddMachOArch(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Definition: Darwin.cpp:154
bool isPICDefaultForced() const override
Tests whether this toolchain forces its default for PIC, PIE or non-PIC.
Definition: Darwin.cpp:2120
StringRef getPlatform() const
Definition: ToolChain.h:203
llvm::ExceptionHandling GetExceptionModel(const llvm::opt::ArgList &Args) const override
GetExceptionModel - Return the tool chain exception model.
Definition: Darwin.cpp:2095
bool addOpenMPRuntime(llvm::opt::ArgStringList &CmdArgs, const ToolChain &TC, const llvm::opt::ArgList &Args, bool IsOffloadingHost=false, bool GompNeedsRT=false)
Returns true, if an OpenMP runtime has been added.
static bool shouldLinkerNotDedup(bool IsLinkerOnlyAction, const ArgList &Args)
Pass -no_deduplicate to ld64 under certain conditions:
Definition: Darwin.cpp:185
Darwin(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args)
Darwin - Darwin tool chain for i386 and x86_64.
Definition: Darwin.cpp:677
&#39;watchos&#39; is a variant of iOS for Apple&#39;s watchOS.
Definition: ObjCRuntime.h:49
void printVerboseInfo(raw_ostream &OS) const override
Dispatch to the specific toolchain for verbose printing.
Definition: Darwin.cpp:2279
Defines a function that returns the minimum OS versions supporting C++17&#39;s aligned allocation functio...
bool requiresMinimalRuntime() const
Definition: SanitizerArgs.h:68
void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, Action::OffloadKind DeviceOffloadKind) const override
Add options that need to be passed to cc1 for this target.
Definition: Darwin.cpp:2000
ActionClass getKind() const
Definition: Action.h:140
bool isTargetWatchOSBased() const
Definition: Darwin.h:388
&#39;macosx&#39; is the Apple-provided NeXT-derived runtime on Mac OS X platforms that use the non-fragile AB...
Definition: ObjCRuntime.h:35
llvm::StringRef getAsString(SyncScope S)
Definition: SyncScope.h:51
static void addExportedSymbol(ArgStringList &CmdArgs, const char *Symbol)
Add an export directive for Symbol to the link command.
Definition: Darwin.cpp:1021
virtual bool SupportsEmbeddedBitcode() const
SupportsEmbeddedBitcode - Does this tool chain support embedded bitcode.
Definition: ToolChain.h:435
VersionTuple TargetVersion
The OS version we are targeting.
Definition: Darwin.h:289
static const char * ArmMachOArchNameCPU(StringRef CPU)
Definition: Darwin.cpp:752
void addCommand(std::unique_ptr< Command > C)
Definition: Compilation.h:206
void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
Add arguments to use system-specific CUDA includes.
Definition: Darwin.cpp:726
bool isObjCAutoRefCount(const llvm::opt::ArgList &Args)
bool isTargetIOSSimulator() const
Definition: Darwin.h:352
llvm::Triple::ArchType getArchTypeForMachOArchName(StringRef Str)
Definition: Darwin.cpp:34
unsigned GetDefaultDwarfVersion() const override
Definition: Darwin.cpp:902
virtual void addMinVersionArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Definition: Darwin.h:166
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:201
void AddCudaIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Definition: Cuda.cpp:229
Link the library in before any others.
Definition: Darwin.h:188
static std::string getSystemOrSDKMacOSVersion(StringRef MacOSSDKVersion)
Returns the most appropriate macOS target version for the current process.
Definition: Darwin.cpp:1135
#define false
Definition: stdbool.h:33
Kind
llvm::opt::DerivedArgList * TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef BoundArch, Action::OffloadKind DeviceOffloadKind) const override
TranslateArgs - Create a new derived argument list for any argument translations this ToolChain may w...
Definition: Darwin.cpp:2012
bool SupportsProfiling() const override
SupportsProfiling - Does this tool chain support -pg.
Definition: Darwin.cpp:2125
const llvm::opt::DerivedArgList & getArgs() const
Definition: Compilation.h:187
VersionTuple getTargetVersion() const
Definition: Darwin.h:400
const Driver & getDriver() const
Definition: ToolChain.h:185
std::string ComputeEffectiveClangTriple(const llvm::opt::ArgList &Args, types::ID InputType) const override
ComputeEffectiveClangTriple - Return the Clang triple to use for this target, which may take into acc...
Definition: Darwin.cpp:797
bool isTargetIOSBased() const
Is the target either iOS or an iOS simulator?
Definition: Darwin.h:174
DarwinClang(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args)
Definition: Darwin.cpp:846
llvm::opt::Arg * getLastProfileUseArg(const llvm::opt::ArgList &Args)
void addStartObjectFileArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
Definition: Darwin.cpp:2154
static const char * ArmMachOArchName(StringRef Arch)
Definition: Darwin.cpp:735
void AddLinkARCArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
Add the linker arguments to link the ARC runtime library.
Definition: Darwin.cpp:865
DarwinPlatformKind TargetPlatform
Definition: Darwin.h:285
Dataflow Directional Tag Classes.
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: Darwin.cpp:645
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: Darwin.cpp:625
static StringRef getSDKName(StringRef isysroot)
Definition: Darwin.cpp:975
void CheckObjCARC() const override
Complain if this tool chain doesn&#39;t support Objective-C ARC.
Definition: Darwin.cpp:2246
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: Darwin.cpp:84
The basic abstraction for the target Objective-C runtime.
Definition: ObjCRuntime.h:28
void AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA)
virtual void AddLinkRuntimeLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Add the linker arguments to link the compiler runtime library.
Definition: Darwin.cpp:1964
StringRef getOSLibraryNameSuffix(bool IgnoreSim=false) const override
Definition: Darwin.cpp:988
llvm::VersionTuple alignedAllocMinVersion(llvm::Triple::OSType OS)
unsigned getLTOParallelism(const llvm::opt::ArgList &Args, const Driver &D)
Tool - Information on a specific compilation tool.
Definition: Tool.h:34
void setTripleTypeForMachOArchName(llvm::Triple &T, StringRef Str)
Definition: Darwin.cpp:69
Defines the virtual file system interface vfs::FileSystem.
const SanitizerArgs & getSanitizerArgs() const
Definition: ToolChain.cpp:114
void addMinVersionArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
Definition: Darwin.cpp:2130
void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
AddCXXStdlibLibArgs - Add the system specific linker arguments to use for the given C++ standard libr...
Definition: Darwin.cpp:1677
&#39;ios&#39; is the Apple-provided NeXT-derived runtime on iOS or the iOS simulator; it is always non-fragil...
Definition: ObjCRuntime.h:45
bool exists(const Twine &Path)
Check whether a file exists. Provided for convenience.
uint64_t SanitizerMask
Definition: Sanitizers.h:26
StringRef getDefaultUniversalArchName() const
Provide the default architecture name (as expected by -arch) for this toolchain.
Definition: ToolChain.cpp:224
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:46
const Driver & getDriver() const
Definition: Compilation.h:134
RuntimeLinkOptions
Options to control how a runtime library is linked.
Definition: Darwin.h:177
const llvm::Triple & getTriple() const
Definition: ToolChain.h:187
Tool * buildLinker() const override
Definition: Darwin.cpp:840
virtual SanitizerMask getSupportedSanitizers() const
Return sanitizers which are available in this toolchain.
Definition: ToolChain.cpp:810
ID lookupTypeForExtension(llvm::StringRef Ext)
lookupTypeForExtension - Lookup the type to use for the file extension Ext.
Definition: Types.cpp:195
virtual Tool * getTool(Action::ActionClass AC) const
Definition: ToolChain.cpp:287
Emit rpaths for as well as the resource directory.
Definition: Darwin.h:185
void addClangWarningOptions(llvm::opt::ArgStringList &CC1Args) const override
Add warning options that need to be passed to cc1 for this target.
Definition: Darwin.cpp:850
bool isTargetWatchOSSimulator() const
Definition: Darwin.h:383
bool isFilename() const
Definition: InputInfo.h:76
const llvm::opt::OptTable & getOpts() const
Definition: Driver.h:297
virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:675
const char * addTempFile(const char *Name)
addTempFile - Add a file to remove on exit, and returns its argument.
Definition: Compilation.h:233
RuntimeLibType GetRuntimeLibType(const llvm::opt::ArgList &Args) const override
Definition: Darwin.cpp:1051
bool hasNativeARC() const
Does this runtime natively provide the ARC entrypoints?
Definition: ObjCRuntime.h:162
static bool isObjCRuntimeLinked(const ArgList &Args)
Determine whether we are linking the ObjC runtime.
Definition: Darwin.cpp:413
bool isTargetTvOSSimulator() const
Definition: Darwin.h:368
bool isIPhoneOSVersionLT(unsigned V0, unsigned V1=0, unsigned V2=0) const
Definition: Darwin.h:405
bool hasSubscripting() const
Does this runtime directly support the subscripting methods?
Definition: ObjCRuntime.h:208
void setTarget(DarwinPlatformKind Platform, DarwinEnvironmentKind Environment, unsigned Major, unsigned Minor, unsigned Micro) const
Definition: Darwin.h:328
bool empty() const
Definition: Job.h:189
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: Darwin.cpp:603
bool isAlignedAllocationUnavailable() const
Return true if c++17 aligned allocation/deallocation functions are not implemented in the c++ standar...
Definition: Darwin.cpp:1979
void AddCCKextLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
AddCCKextLibArgs - Add the system specific linker arguments to use for kernel extensions (Darwin-spec...
Definition: Darwin.cpp:1722
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:88