1 //===--- Darwin.cpp - Darwin Tool and ToolChain Implementations -*- C++ -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
11 #include "CommonArgs.h"
12 #include "clang/Basic/AlignedAllocation.h"
13 #include "clang/Basic/ObjCRuntime.h"
14 #include "clang/Config/config.h"
15 #include "clang/Driver/Compilation.h"
16 #include "clang/Driver/Driver.h"
17 #include "clang/Driver/DriverDiagnostic.h"
18 #include "clang/Driver/Options.h"
19 #include "clang/Driver/SanitizerArgs.h"
20 #include "llvm/ADT/StringSwitch.h"
21 #include "llvm/Option/ArgList.h"
22 #include "llvm/Support/Path.h"
23 #include "llvm/Support/ScopedPrinter.h"
24 #include "llvm/Support/TargetParser.h"
25 #include "llvm/Support/VirtualFileSystem.h"
26 #include <cstdlib> // ::getenv
28 using namespace clang::driver;
29 using namespace clang::driver::tools;
30 using namespace clang::driver::toolchains;
31 using namespace clang;
32 using namespace llvm::opt;
34 llvm::Triple::ArchType darwin::getArchTypeForMachOArchName(StringRef Str) {
35 // See arch(3) and llvm-gcc's driver-driver.c. We don't implement support for
36 // archs which Darwin doesn't use.
38 // The matching this routine does is fairly pointless, since it is neither the
39 // complete architecture list, nor a reasonable subset. The problem is that
40 // historically the driver driver accepts this and also ties its -march=
41 // handling to the architecture name, so we need to be careful before removing
44 // This code must be kept in sync with Clang's Darwin specific argument
47 return llvm::StringSwitch<llvm::Triple::ArchType>(Str)
48 .Cases("ppc", "ppc601", "ppc603", "ppc604", "ppc604e", llvm::Triple::ppc)
49 .Cases("ppc750", "ppc7400", "ppc7450", "ppc970", llvm::Triple::ppc)
50 .Case("ppc64", llvm::Triple::ppc64)
51 .Cases("i386", "i486", "i486SX", "i586", "i686", llvm::Triple::x86)
52 .Cases("pentium", "pentpro", "pentIIm3", "pentIIm5", "pentium4",
54 .Cases("x86_64", "x86_64h", llvm::Triple::x86_64)
55 // This is derived from the driver driver.
56 .Cases("arm", "armv4t", "armv5", "armv6", "armv6m", llvm::Triple::arm)
57 .Cases("armv7", "armv7em", "armv7k", "armv7m", llvm::Triple::arm)
58 .Cases("armv7s", "xscale", llvm::Triple::arm)
59 .Case("arm64", llvm::Triple::aarch64)
60 .Case("r600", llvm::Triple::r600)
61 .Case("amdgcn", llvm::Triple::amdgcn)
62 .Case("nvptx", llvm::Triple::nvptx)
63 .Case("nvptx64", llvm::Triple::nvptx64)
64 .Case("amdil", llvm::Triple::amdil)
65 .Case("spir", llvm::Triple::spir)
66 .Default(llvm::Triple::UnknownArch);
69 void darwin::setTripleTypeForMachOArchName(llvm::Triple &T, StringRef Str) {
70 const llvm::Triple::ArchType Arch = getArchTypeForMachOArchName(Str);
71 llvm::ARM::ArchKind ArchKind = llvm::ARM::parseArch(Str);
76 else if (ArchKind == llvm::ARM::ArchKind::ARMV6M ||
77 ArchKind == llvm::ARM::ArchKind::ARMV7M ||
78 ArchKind == llvm::ARM::ArchKind::ARMV7EM) {
79 T.setOS(llvm::Triple::UnknownOS);
80 T.setObjectFormat(llvm::Triple::MachO);
84 void darwin::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
85 const InputInfo &Output,
86 const InputInfoList &Inputs,
88 const char *LinkingOutput) const {
89 ArgStringList CmdArgs;
91 assert(Inputs.size() == 1 && "Unexpected number of inputs.");
92 const InputInfo &Input = Inputs[0];
94 // Determine the original source input.
95 const Action *SourceAction = &JA;
96 while (SourceAction->getKind() != Action::InputClass) {
97 assert(!SourceAction->getInputs().empty() && "unexpected root action!");
98 SourceAction = SourceAction->getInputs()[0];
101 // If -fno-integrated-as is used add -Q to the darwin assembler driver to make
102 // sure it runs its system assembler not clang's integrated assembler.
103 // Applicable to darwin11+ and Xcode 4+. darwin<10 lacked integrated-as.
104 // FIXME: at run-time detect assembler capabilities or rely on version
105 // information forwarded by -target-assembler-version.
106 if (Args.hasArg(options::OPT_fno_integrated_as)) {
107 const llvm::Triple &T(getToolChain().getTriple());
108 if (!(T.isMacOSX() && T.isMacOSXVersionLT(10, 7)))
109 CmdArgs.push_back("-Q");
112 // Forward -g, assuming we are dealing with an actual assembly file.
113 if (SourceAction->getType() == types::TY_Asm ||
114 SourceAction->getType() == types::TY_PP_Asm) {
115 if (Args.hasArg(options::OPT_gstabs))
116 CmdArgs.push_back("--gstabs");
117 else if (Args.hasArg(options::OPT_g_Group))
118 CmdArgs.push_back("-g");
121 // Derived from asm spec.
122 AddMachOArch(Args, CmdArgs);
124 // Use -force_cpusubtype_ALL on x86 by default.
125 if (getToolChain().getArch() == llvm::Triple::x86 ||
126 getToolChain().getArch() == llvm::Triple::x86_64 ||
127 Args.hasArg(options::OPT_force__cpusubtype__ALL))
128 CmdArgs.push_back("-force_cpusubtype_ALL");
130 if (getToolChain().getArch() != llvm::Triple::x86_64 &&
131 (((Args.hasArg(options::OPT_mkernel) ||
132 Args.hasArg(options::OPT_fapple_kext)) &&
133 getMachOToolChain().isKernelStatic()) ||
134 Args.hasArg(options::OPT_static)))
135 CmdArgs.push_back("-static");
137 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
139 assert(Output.isFilename() && "Unexpected lipo output.");
140 CmdArgs.push_back("-o");
141 CmdArgs.push_back(Output.getFilename());
143 assert(Input.isFilename() && "Invalid input.");
144 CmdArgs.push_back(Input.getFilename());
146 // asm_final spec is empty.
148 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
149 C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
152 void darwin::MachOTool::anchor() {}
154 void darwin::MachOTool::AddMachOArch(const ArgList &Args,
155 ArgStringList &CmdArgs) const {
156 StringRef ArchName = getMachOToolChain().getMachOArchName(Args);
158 // Derived from darwin_arch spec.
159 CmdArgs.push_back("-arch");
160 CmdArgs.push_back(Args.MakeArgString(ArchName));
162 // FIXME: Is this needed anymore?
163 if (ArchName == "arm")
164 CmdArgs.push_back("-force_cpusubtype_ALL");
167 bool darwin::Linker::NeedsTempPath(const InputInfoList &Inputs) const {
168 // We only need to generate a temp path for LTO if we aren't compiling object
169 // files. When compiling source files, we run 'dsymutil' after linking. We
170 // don't run 'dsymutil' when compiling object files.
171 for (const auto &Input : Inputs)
172 if (Input.getType() != types::TY_Object)
178 /// Pass -no_deduplicate to ld64 under certain conditions:
180 /// - Either -O0 or -O1 is explicitly specified
181 /// - No -O option is specified *and* this is a compile+link (implicit -O0)
183 /// Also do *not* add -no_deduplicate when no -O option is specified and this
184 /// is just a link (we can't imply -O0)
185 static bool shouldLinkerNotDedup(bool IsLinkerOnlyAction, const ArgList &Args) {
186 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
187 if (A->getOption().matches(options::OPT_O0))
189 if (A->getOption().matches(options::OPT_O))
190 return llvm::StringSwitch<bool>(A->getValue())
193 return false; // OPT_Ofast & OPT_O4
196 if (!IsLinkerOnlyAction) // Implicit -O0 for compile+linker only.
201 void darwin::Linker::AddLinkArgs(Compilation &C, const ArgList &Args,
202 ArgStringList &CmdArgs,
203 const InputInfoList &Inputs) const {
204 const Driver &D = getToolChain().getDriver();
205 const toolchains::MachO &MachOTC = getMachOToolChain();
207 unsigned Version[5] = {0, 0, 0, 0, 0};
208 if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
209 if (!Driver::GetReleaseVersion(A->getValue(), Version))
210 D.Diag(diag::err_drv_invalid_version_number) << A->getAsString(Args);
213 // Newer linkers support -demangle. Pass it if supported and not disabled by
215 if (Version[0] >= 100 && !Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
216 CmdArgs.push_back("-demangle");
218 if (Args.hasArg(options::OPT_rdynamic) && Version[0] >= 137)
219 CmdArgs.push_back("-export_dynamic");
221 // If we are using App Extension restrictions, pass a flag to the linker
222 // telling it that the compiled code has been audited.
223 if (Args.hasFlag(options::OPT_fapplication_extension,
224 options::OPT_fno_application_extension, false))
225 CmdArgs.push_back("-application_extension");
227 if (D.isUsingLTO() && Version[0] >= 116 && NeedsTempPath(Inputs)) {
228 std::string TmpPathName;
229 if (D.getLTOMode() == LTOK_Full) {
230 // If we are using full LTO, then automatically create a temporary file
231 // path for the linker to use, so that it's lifetime will extend past a
232 // possible dsymutil step.
234 D.GetTemporaryPath("cc", types::getTypeTempSuffix(types::TY_Object));
235 } else if (D.getLTOMode() == LTOK_Thin)
236 // If we are using thin LTO, then create a directory instead.
237 TmpPathName = D.GetTemporaryDirectory("thinlto");
239 if (!TmpPathName.empty()) {
240 auto *TmpPath = C.getArgs().MakeArgString(TmpPathName);
241 C.addTempFile(TmpPath);
242 CmdArgs.push_back("-object_path_lto");
243 CmdArgs.push_back(TmpPath);
247 // Use -lto_library option to specify the libLTO.dylib path. Try to find
248 // it in clang installed libraries. ld64 will only look at this argument
249 // when it actually uses LTO, so libLTO.dylib only needs to exist at link
250 // time if ld64 decides that it needs to use LTO.
251 // Since this is passed unconditionally, ld64 will never look for libLTO.dylib
252 // next to it. That's ok since ld64 using a libLTO.dylib not matching the
253 // clang version won't work anyways.
254 if (Version[0] >= 133) {
255 // Search for libLTO in <InstalledDir>/../lib/libLTO.dylib
256 StringRef P = llvm::sys::path::parent_path(D.Dir);
257 SmallString<128> LibLTOPath(P);
258 llvm::sys::path::append(LibLTOPath, "lib");
259 llvm::sys::path::append(LibLTOPath, "libLTO.dylib");
260 CmdArgs.push_back("-lto_library");
261 CmdArgs.push_back(C.getArgs().MakeArgString(LibLTOPath));
264 // ld64 version 262 and above run the deduplicate pass by default.
265 if (Version[0] >= 262 && shouldLinkerNotDedup(C.getJobs().empty(), Args))
266 CmdArgs.push_back("-no_deduplicate");
268 // Derived from the "link" spec.
269 Args.AddAllArgs(CmdArgs, options::OPT_static);
270 if (!Args.hasArg(options::OPT_static))
271 CmdArgs.push_back("-dynamic");
272 if (Args.hasArg(options::OPT_fgnu_runtime)) {
273 // FIXME: gcc replaces -lobjc in forward args with -lobjc-gnu
274 // here. How do we wish to handle such things?
277 if (!Args.hasArg(options::OPT_dynamiclib)) {
278 AddMachOArch(Args, CmdArgs);
279 // FIXME: Why do this only on this path?
280 Args.AddLastArg(CmdArgs, options::OPT_force__cpusubtype__ALL);
282 Args.AddLastArg(CmdArgs, options::OPT_bundle);
283 Args.AddAllArgs(CmdArgs, options::OPT_bundle__loader);
284 Args.AddAllArgs(CmdArgs, options::OPT_client__name);
287 if ((A = Args.getLastArg(options::OPT_compatibility__version)) ||
288 (A = Args.getLastArg(options::OPT_current__version)) ||
289 (A = Args.getLastArg(options::OPT_install__name)))
290 D.Diag(diag::err_drv_argument_only_allowed_with) << A->getAsString(Args)
293 Args.AddLastArg(CmdArgs, options::OPT_force__flat__namespace);
294 Args.AddLastArg(CmdArgs, options::OPT_keep__private__externs);
295 Args.AddLastArg(CmdArgs, options::OPT_private__bundle);
297 CmdArgs.push_back("-dylib");
300 if ((A = Args.getLastArg(options::OPT_bundle)) ||
301 (A = Args.getLastArg(options::OPT_bundle__loader)) ||
302 (A = Args.getLastArg(options::OPT_client__name)) ||
303 (A = Args.getLastArg(options::OPT_force__flat__namespace)) ||
304 (A = Args.getLastArg(options::OPT_keep__private__externs)) ||
305 (A = Args.getLastArg(options::OPT_private__bundle)))
306 D.Diag(diag::err_drv_argument_not_allowed_with) << A->getAsString(Args)
309 Args.AddAllArgsTranslated(CmdArgs, options::OPT_compatibility__version,
310 "-dylib_compatibility_version");
311 Args.AddAllArgsTranslated(CmdArgs, options::OPT_current__version,
312 "-dylib_current_version");
314 AddMachOArch(Args, CmdArgs);
316 Args.AddAllArgsTranslated(CmdArgs, options::OPT_install__name,
317 "-dylib_install_name");
320 Args.AddLastArg(CmdArgs, options::OPT_all__load);
321 Args.AddAllArgs(CmdArgs, options::OPT_allowable__client);
322 Args.AddLastArg(CmdArgs, options::OPT_bind__at__load);
323 if (MachOTC.isTargetIOSBased())
324 Args.AddLastArg(CmdArgs, options::OPT_arch__errors__fatal);
325 Args.AddLastArg(CmdArgs, options::OPT_dead__strip);
326 Args.AddLastArg(CmdArgs, options::OPT_no__dead__strip__inits__and__terms);
327 Args.AddAllArgs(CmdArgs, options::OPT_dylib__file);
328 Args.AddLastArg(CmdArgs, options::OPT_dynamic);
329 Args.AddAllArgs(CmdArgs, options::OPT_exported__symbols__list);
330 Args.AddLastArg(CmdArgs, options::OPT_flat__namespace);
331 Args.AddAllArgs(CmdArgs, options::OPT_force__load);
332 Args.AddAllArgs(CmdArgs, options::OPT_headerpad__max__install__names);
333 Args.AddAllArgs(CmdArgs, options::OPT_image__base);
334 Args.AddAllArgs(CmdArgs, options::OPT_init);
336 // Add the deployment target.
337 MachOTC.addMinVersionArgs(Args, CmdArgs);
339 Args.AddLastArg(CmdArgs, options::OPT_nomultidefs);
340 Args.AddLastArg(CmdArgs, options::OPT_multi__module);
341 Args.AddLastArg(CmdArgs, options::OPT_single__module);
342 Args.AddAllArgs(CmdArgs, options::OPT_multiply__defined);
343 Args.AddAllArgs(CmdArgs, options::OPT_multiply__defined__unused);
346 Args.getLastArg(options::OPT_fpie, options::OPT_fPIE,
347 options::OPT_fno_pie, options::OPT_fno_PIE)) {
348 if (A->getOption().matches(options::OPT_fpie) ||
349 A->getOption().matches(options::OPT_fPIE))
350 CmdArgs.push_back("-pie");
352 CmdArgs.push_back("-no_pie");
355 // for embed-bitcode, use -bitcode_bundle in linker command
356 if (C.getDriver().embedBitcodeEnabled()) {
357 // Check if the toolchain supports bitcode build flow.
358 if (MachOTC.SupportsEmbeddedBitcode()) {
359 CmdArgs.push_back("-bitcode_bundle");
360 if (C.getDriver().embedBitcodeMarkerOnly() && Version[0] >= 278) {
361 CmdArgs.push_back("-bitcode_process_mode");
362 CmdArgs.push_back("marker");
365 D.Diag(diag::err_drv_bitcode_unsupported_on_toolchain);
368 Args.AddLastArg(CmdArgs, options::OPT_prebind);
369 Args.AddLastArg(CmdArgs, options::OPT_noprebind);
370 Args.AddLastArg(CmdArgs, options::OPT_nofixprebinding);
371 Args.AddLastArg(CmdArgs, options::OPT_prebind__all__twolevel__modules);
372 Args.AddLastArg(CmdArgs, options::OPT_read__only__relocs);
373 Args.AddAllArgs(CmdArgs, options::OPT_sectcreate);
374 Args.AddAllArgs(CmdArgs, options::OPT_sectorder);
375 Args.AddAllArgs(CmdArgs, options::OPT_seg1addr);
376 Args.AddAllArgs(CmdArgs, options::OPT_segprot);
377 Args.AddAllArgs(CmdArgs, options::OPT_segaddr);
378 Args.AddAllArgs(CmdArgs, options::OPT_segs__read__only__addr);
379 Args.AddAllArgs(CmdArgs, options::OPT_segs__read__write__addr);
380 Args.AddAllArgs(CmdArgs, options::OPT_seg__addr__table);
381 Args.AddAllArgs(CmdArgs, options::OPT_seg__addr__table__filename);
382 Args.AddAllArgs(CmdArgs, options::OPT_sub__library);
383 Args.AddAllArgs(CmdArgs, options::OPT_sub__umbrella);
385 // Give --sysroot= preference, over the Apple specific behavior to also use
386 // --isysroot as the syslibroot.
387 StringRef sysroot = C.getSysRoot();
389 CmdArgs.push_back("-syslibroot");
390 CmdArgs.push_back(C.getArgs().MakeArgString(sysroot));
391 } else if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
392 CmdArgs.push_back("-syslibroot");
393 CmdArgs.push_back(A->getValue());
396 Args.AddLastArg(CmdArgs, options::OPT_twolevel__namespace);
397 Args.AddLastArg(CmdArgs, options::OPT_twolevel__namespace__hints);
398 Args.AddAllArgs(CmdArgs, options::OPT_umbrella);
399 Args.AddAllArgs(CmdArgs, options::OPT_undefined);
400 Args.AddAllArgs(CmdArgs, options::OPT_unexported__symbols__list);
401 Args.AddAllArgs(CmdArgs, options::OPT_weak__reference__mismatches);
402 Args.AddLastArg(CmdArgs, options::OPT_X_Flag);
403 Args.AddAllArgs(CmdArgs, options::OPT_y);
404 Args.AddLastArg(CmdArgs, options::OPT_w);
405 Args.AddAllArgs(CmdArgs, options::OPT_pagezero__size);
406 Args.AddAllArgs(CmdArgs, options::OPT_segs__read__);
407 Args.AddLastArg(CmdArgs, options::OPT_seglinkedit);
408 Args.AddLastArg(CmdArgs, options::OPT_noseglinkedit);
409 Args.AddAllArgs(CmdArgs, options::OPT_sectalign);
410 Args.AddAllArgs(CmdArgs, options::OPT_sectobjectsymbols);
411 Args.AddAllArgs(CmdArgs, options::OPT_segcreate);
412 Args.AddLastArg(CmdArgs, options::OPT_whyload);
413 Args.AddLastArg(CmdArgs, options::OPT_whatsloaded);
414 Args.AddAllArgs(CmdArgs, options::OPT_dylinker__install__name);
415 Args.AddLastArg(CmdArgs, options::OPT_dylinker);
416 Args.AddLastArg(CmdArgs, options::OPT_Mach);
419 /// Determine whether we are linking the ObjC runtime.
420 static bool isObjCRuntimeLinked(const ArgList &Args) {
421 if (isObjCAutoRefCount(Args)) {
422 Args.ClaimAllArgs(options::OPT_fobjc_link_runtime);
425 return Args.hasArg(options::OPT_fobjc_link_runtime);
428 void darwin::Linker::ConstructJob(Compilation &C, const JobAction &JA,
429 const InputInfo &Output,
430 const InputInfoList &Inputs,
432 const char *LinkingOutput) const {
433 assert(Output.getType() == types::TY_Image && "Invalid linker output type.");
435 // If the number of arguments surpasses the system limits, we will encode the
436 // input files in a separate file, shortening the command line. To this end,
437 // build a list of input file names that can be passed via a file with the
438 // -filelist linker option.
439 llvm::opt::ArgStringList InputFileList;
441 // The logic here is derived from gcc's behavior; most of which
442 // comes from specs (starting with link_command). Consult gcc for
444 ArgStringList CmdArgs;
446 /// Hack(tm) to ignore linking errors when we are doing ARC migration.
447 if (Args.hasArg(options::OPT_ccc_arcmt_check,
448 options::OPT_ccc_arcmt_migrate)) {
449 for (const auto &Arg : Args)
452 Args.MakeArgString(getToolChain().GetProgramPath("touch"));
453 CmdArgs.push_back(Output.getFilename());
454 C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, None));
458 // I'm not sure why this particular decomposition exists in gcc, but
459 // we follow suite for ease of comparison.
460 AddLinkArgs(C, Args, CmdArgs, Inputs);
462 // For LTO, pass the name of the optimization record file and other
463 // opt-remarks flags.
464 if (Args.hasFlag(options::OPT_fsave_optimization_record,
465 options::OPT_fsave_optimization_record_EQ,
466 options::OPT_fno_save_optimization_record, false)) {
467 CmdArgs.push_back("-mllvm");
468 CmdArgs.push_back("-lto-pass-remarks-output");
469 CmdArgs.push_back("-mllvm");
472 F = Output.getFilename();
475 Args.getLastArg(options::OPT_fsave_optimization_record_EQ))
480 CmdArgs.push_back(Args.MakeArgString(F));
482 if (getLastProfileUseArg(Args)) {
483 CmdArgs.push_back("-mllvm");
484 CmdArgs.push_back("-lto-pass-remarks-with-hotness");
487 Args.getLastArg(options::OPT_fdiagnostics_hotness_threshold_EQ)) {
488 CmdArgs.push_back("-mllvm");
490 std::string("-lto-pass-remarks-hotness-threshold=") + A->getValue();
491 CmdArgs.push_back(Args.MakeArgString(Opt));
496 Args.getLastArg(options::OPT_foptimization_record_passes_EQ)) {
497 CmdArgs.push_back("-mllvm");
499 std::string("-lto-pass-remarks-filter=") + A->getValue();
500 CmdArgs.push_back(Args.MakeArgString(Passes));
504 Args.getLastArg(options::OPT_fsave_optimization_record_EQ)) {
505 CmdArgs.push_back("-mllvm");
507 std::string("-lto-pass-remarks-format=") + A->getValue();
508 CmdArgs.push_back(Args.MakeArgString(Format));
512 // Propagate the -moutline flag to the linker in LTO.
514 Args.getLastArg(options::OPT_moutline, options::OPT_mno_outline)) {
515 if (A->getOption().matches(options::OPT_moutline)) {
516 if (getMachOToolChain().getMachOArchName(Args) == "arm64") {
517 CmdArgs.push_back("-mllvm");
518 CmdArgs.push_back("-enable-machine-outliner");
520 // Outline from linkonceodr functions by default in LTO.
521 CmdArgs.push_back("-mllvm");
522 CmdArgs.push_back("-enable-linkonceodr-outlining");
525 // Disable all outlining behaviour if we have mno-outline. We need to do
526 // this explicitly, because targets which support default outlining will
527 // try to do work if we don't.
528 CmdArgs.push_back("-mllvm");
529 CmdArgs.push_back("-enable-machine-outliner=never");
533 // Setup statistics file output.
534 SmallString<128> StatsFile =
535 getStatsFileName(Args, Output, Inputs[0], getToolChain().getDriver());
536 if (!StatsFile.empty()) {
537 CmdArgs.push_back("-mllvm");
538 CmdArgs.push_back(Args.MakeArgString("-lto-stats-file=" + StatsFile.str()));
541 // It seems that the 'e' option is completely ignored for dynamic executables
542 // (the default), and with static executables, the last one wins, as expected.
543 Args.AddAllArgs(CmdArgs, {options::OPT_d_Flag, options::OPT_s, options::OPT_t,
544 options::OPT_Z_Flag, options::OPT_u_Group,
545 options::OPT_e, options::OPT_r});
547 // Forward -ObjC when either -ObjC or -ObjC++ is used, to force loading
548 // members of static archive libraries which implement Objective-C classes or
550 if (Args.hasArg(options::OPT_ObjC) || Args.hasArg(options::OPT_ObjCXX))
551 CmdArgs.push_back("-ObjC");
553 CmdArgs.push_back("-o");
554 CmdArgs.push_back(Output.getFilename());
556 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles))
557 getMachOToolChain().addStartObjectFileArgs(Args, CmdArgs);
559 Args.AddAllArgs(CmdArgs, options::OPT_L);
561 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
562 // Build the input file for -filelist (list of linker input files) in case we
564 for (const auto &II : Inputs) {
565 if (!II.isFilename()) {
566 // This is a linker input argument.
567 // We cannot mix input arguments and file names in a -filelist input, thus
568 // we prematurely stop our list (remaining files shall be passed as
570 if (InputFileList.size() > 0)
576 InputFileList.push_back(II.getFilename());
579 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs))
580 addOpenMPRuntime(CmdArgs, getToolChain(), Args);
582 if (isObjCRuntimeLinked(Args) &&
583 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
584 // We use arclite library for both ARC and subscripting support.
585 getMachOToolChain().AddLinkARCArgs(Args, CmdArgs);
587 CmdArgs.push_back("-framework");
588 CmdArgs.push_back("Foundation");
590 CmdArgs.push_back("-lobjc");
594 CmdArgs.push_back("-arch_multiple");
595 CmdArgs.push_back("-final_output");
596 CmdArgs.push_back(LinkingOutput);
599 if (Args.hasArg(options::OPT_fnested_functions))
600 CmdArgs.push_back("-allow_stack_execute");
602 getMachOToolChain().addProfileRTLibs(Args, CmdArgs);
604 if (unsigned Parallelism =
605 getLTOParallelism(Args, getToolChain().getDriver())) {
606 CmdArgs.push_back("-mllvm");
607 CmdArgs.push_back(Args.MakeArgString("-threads=" + Twine(Parallelism)));
610 if (getToolChain().ShouldLinkCXXStdlib(Args))
611 getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
613 bool NoStdOrDefaultLibs =
614 Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs);
615 bool ForceLinkBuiltins = Args.hasArg(options::OPT_fapple_link_rtlib);
616 if (!NoStdOrDefaultLibs || ForceLinkBuiltins) {
617 // link_ssp spec is empty.
619 // If we have both -nostdlib/nodefaultlibs and -fapple-link-rtlib then
620 // we just want to link the builtins, not the other libs like libSystem.
621 if (NoStdOrDefaultLibs && ForceLinkBuiltins) {
622 getMachOToolChain().AddLinkRuntimeLib(Args, CmdArgs, "builtins");
624 // Let the tool chain choose which runtime library to link.
625 getMachOToolChain().AddLinkRuntimeLibArgs(Args, CmdArgs,
628 // No need to do anything for pthreads. Claim argument to avoid warning.
629 Args.ClaimAllArgs(options::OPT_pthread);
630 Args.ClaimAllArgs(options::OPT_pthreads);
634 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
635 // endfile_spec is empty.
638 Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
639 Args.AddAllArgs(CmdArgs, options::OPT_F);
641 // -iframework should be forwarded as -F.
642 for (const Arg *A : Args.filtered(options::OPT_iframework))
643 CmdArgs.push_back(Args.MakeArgString(std::string("-F") + A->getValue()));
645 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
646 if (Arg *A = Args.getLastArg(options::OPT_fveclib)) {
647 if (A->getValue() == StringRef("Accelerate")) {
648 CmdArgs.push_back("-framework");
649 CmdArgs.push_back("Accelerate");
654 const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
655 std::unique_ptr<Command> Cmd =
656 std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs);
657 Cmd->setInputFileList(std::move(InputFileList));
658 C.addCommand(std::move(Cmd));
661 void darwin::Lipo::ConstructJob(Compilation &C, const JobAction &JA,
662 const InputInfo &Output,
663 const InputInfoList &Inputs,
665 const char *LinkingOutput) const {
666 ArgStringList CmdArgs;
668 CmdArgs.push_back("-create");
669 assert(Output.isFilename() && "Unexpected lipo output.");
671 CmdArgs.push_back("-output");
672 CmdArgs.push_back(Output.getFilename());
674 for (const auto &II : Inputs) {
675 assert(II.isFilename() && "Unexpected lipo input.");
676 CmdArgs.push_back(II.getFilename());
679 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("lipo"));
680 C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
683 void darwin::Dsymutil::ConstructJob(Compilation &C, const JobAction &JA,
684 const InputInfo &Output,
685 const InputInfoList &Inputs,
687 const char *LinkingOutput) const {
688 ArgStringList CmdArgs;
690 CmdArgs.push_back("-o");
691 CmdArgs.push_back(Output.getFilename());
693 assert(Inputs.size() == 1 && "Unable to handle multiple inputs.");
694 const InputInfo &Input = Inputs[0];
695 assert(Input.isFilename() && "Unexpected dsymutil input.");
696 CmdArgs.push_back(Input.getFilename());
699 Args.MakeArgString(getToolChain().GetProgramPath("dsymutil"));
700 C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
703 void darwin::VerifyDebug::ConstructJob(Compilation &C, const JobAction &JA,
704 const InputInfo &Output,
705 const InputInfoList &Inputs,
707 const char *LinkingOutput) const {
708 ArgStringList CmdArgs;
709 CmdArgs.push_back("--verify");
710 CmdArgs.push_back("--debug-info");
711 CmdArgs.push_back("--eh-frame");
712 CmdArgs.push_back("--quiet");
714 assert(Inputs.size() == 1 && "Unable to handle multiple inputs.");
715 const InputInfo &Input = Inputs[0];
716 assert(Input.isFilename() && "Unexpected verify input");
718 // Grabbing the output of the earlier dsymutil run.
719 CmdArgs.push_back(Input.getFilename());
722 Args.MakeArgString(getToolChain().GetProgramPath("dwarfdump"));
723 C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
726 MachO::MachO(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
727 : ToolChain(D, Triple, Args) {
728 // We expect 'as', 'ld', etc. to be adjacent to our install dir.
729 getProgramPaths().push_back(getDriver().getInstalledDir());
730 if (getDriver().getInstalledDir() != getDriver().Dir)
731 getProgramPaths().push_back(getDriver().Dir);
734 /// Darwin - Darwin tool chain for i386 and x86_64.
735 Darwin::Darwin(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
736 : MachO(D, Triple, Args), TargetInitialized(false),
737 CudaInstallation(D, Triple, Args) {}
739 types::ID MachO::LookupTypeForExtension(StringRef Ext) const {
740 types::ID Ty = types::lookupTypeForExtension(Ext);
742 // Darwin always preprocesses assembly files (unless -x is used explicitly).
743 if (Ty == types::TY_PP_Asm)
744 return types::TY_Asm;
749 bool MachO::HasNativeLLVMSupport() const { return true; }
751 ToolChain::CXXStdlibType Darwin::GetDefaultCXXStdlibType() const {
752 // Default to use libc++ on OS X 10.9+ and iOS 7+.
753 if ((isTargetMacOS() && !isMacosxVersionLT(10, 9)) ||
754 (isTargetIOSBased() && !isIPhoneOSVersionLT(7, 0)) ||
755 isTargetWatchOSBased())
756 return ToolChain::CST_Libcxx;
758 return ToolChain::CST_Libstdcxx;
761 /// Darwin provides an ARC runtime starting in MacOS X 10.7 and iOS 5.0.
762 ObjCRuntime Darwin::getDefaultObjCRuntime(bool isNonFragile) const {
763 if (isTargetWatchOSBased())
764 return ObjCRuntime(ObjCRuntime::WatchOS, TargetVersion);
765 if (isTargetIOSBased())
766 return ObjCRuntime(ObjCRuntime::iOS, TargetVersion);
768 return ObjCRuntime(ObjCRuntime::MacOSX, TargetVersion);
769 return ObjCRuntime(ObjCRuntime::FragileMacOSX, TargetVersion);
772 /// Darwin provides a blocks runtime starting in MacOS X 10.6 and iOS 3.2.
773 bool Darwin::hasBlocksRuntime() const {
774 if (isTargetWatchOSBased())
776 else if (isTargetIOSBased())
777 return !isIPhoneOSVersionLT(3, 2);
779 assert(isTargetMacOS() && "unexpected darwin target");
780 return !isMacosxVersionLT(10, 6);
784 void Darwin::AddCudaIncludeArgs(const ArgList &DriverArgs,
785 ArgStringList &CC1Args) const {
786 CudaInstallation.AddCudaIncludeArgs(DriverArgs, CC1Args);
789 // This is just a MachO name translation routine and there's no
790 // way to join this into ARMTargetParser without breaking all
791 // other assumptions. Maybe MachO should consider standardising
792 // their nomenclature.
793 static const char *ArmMachOArchName(StringRef Arch) {
794 return llvm::StringSwitch<const char *>(Arch)
795 .Case("armv6k", "armv6")
796 .Case("armv6m", "armv6m")
797 .Case("armv5tej", "armv5")
798 .Case("xscale", "xscale")
799 .Case("armv4t", "armv4t")
800 .Case("armv7", "armv7")
801 .Cases("armv7a", "armv7-a", "armv7")
802 .Cases("armv7r", "armv7-r", "armv7")
803 .Cases("armv7em", "armv7e-m", "armv7em")
804 .Cases("armv7k", "armv7-k", "armv7k")
805 .Cases("armv7m", "armv7-m", "armv7m")
806 .Cases("armv7s", "armv7-s", "armv7s")
810 static const char *ArmMachOArchNameCPU(StringRef CPU) {
811 llvm::ARM::ArchKind ArchKind = llvm::ARM::parseCPUArch(CPU);
812 if (ArchKind == llvm::ARM::ArchKind::INVALID)
814 StringRef Arch = llvm::ARM::getArchName(ArchKind);
816 // FIXME: Make sure this MachO triple mangling is really necessary.
817 // ARMv5* normalises to ARMv5.
818 if (Arch.startswith("armv5"))
819 Arch = Arch.substr(0, 5);
820 // ARMv6*, except ARMv6M, normalises to ARMv6.
821 else if (Arch.startswith("armv6") && !Arch.endswith("6m"))
822 Arch = Arch.substr(0, 5);
823 // ARMv7A normalises to ARMv7.
824 else if (Arch.endswith("v7a"))
825 Arch = Arch.substr(0, 5);
829 StringRef MachO::getMachOArchName(const ArgList &Args) const {
830 switch (getTriple().getArch()) {
832 return getDefaultUniversalArchName();
834 case llvm::Triple::aarch64:
837 case llvm::Triple::thumb:
838 case llvm::Triple::arm:
839 if (const Arg *A = Args.getLastArg(clang::driver::options::OPT_march_EQ))
840 if (const char *Arch = ArmMachOArchName(A->getValue()))
843 if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
844 if (const char *Arch = ArmMachOArchNameCPU(A->getValue()))
855 std::string Darwin::ComputeEffectiveClangTriple(const ArgList &Args,
856 types::ID InputType) const {
857 llvm::Triple Triple(ComputeLLVMTriple(Args, InputType));
859 // If the target isn't initialized (e.g., an unknown Darwin platform, return
860 // the default triple).
861 if (!isTargetInitialized())
862 return Triple.getTriple();
865 if (isTargetWatchOSBased())
867 else if (isTargetTvOSBased())
869 else if (isTargetIOSBased())
873 Str += getTargetVersion().getAsString();
874 Triple.setOSName(Str);
876 return Triple.getTriple();
879 Tool *MachO::getTool(Action::ActionClass AC) const {
881 case Action::LipoJobClass:
883 Lipo.reset(new tools::darwin::Lipo(*this));
885 case Action::DsymutilJobClass:
887 Dsymutil.reset(new tools::darwin::Dsymutil(*this));
888 return Dsymutil.get();
889 case Action::VerifyDebugInfoJobClass:
891 VerifyDebug.reset(new tools::darwin::VerifyDebug(*this));
892 return VerifyDebug.get();
894 return ToolChain::getTool(AC);
898 Tool *MachO::buildLinker() const { return new tools::darwin::Linker(*this); }
900 Tool *MachO::buildAssembler() const {
901 return new tools::darwin::Assembler(*this);
904 DarwinClang::DarwinClang(const Driver &D, const llvm::Triple &Triple,
906 : Darwin(D, Triple, Args) {}
908 void DarwinClang::addClangWarningOptions(ArgStringList &CC1Args) const {
909 // For modern targets, promote certain warnings to errors.
910 if (isTargetWatchOSBased() || getTriple().isArch64Bit()) {
911 // Always enable -Wdeprecated-objc-isa-usage and promote it
913 CC1Args.push_back("-Wdeprecated-objc-isa-usage");
914 CC1Args.push_back("-Werror=deprecated-objc-isa-usage");
916 // For iOS and watchOS, also error about implicit function declarations,
917 // as that can impact calling conventions.
918 if (!isTargetMacOS())
919 CC1Args.push_back("-Werror=implicit-function-declaration");
923 /// Take a path that speculatively points into Xcode and return the
924 /// `XCODE/Contents/Developer` path if it is an Xcode path, or an empty path
926 static StringRef getXcodeDeveloperPath(StringRef PathIntoXcode) {
927 static constexpr llvm::StringLiteral XcodeAppSuffix(
928 ".app/Contents/Developer");
929 size_t Index = PathIntoXcode.find(XcodeAppSuffix);
930 if (Index == StringRef::npos)
932 return PathIntoXcode.take_front(Index + XcodeAppSuffix.size());
935 void DarwinClang::AddLinkARCArgs(const ArgList &Args,
936 ArgStringList &CmdArgs) const {
937 // Avoid linking compatibility stubs on i386 mac.
938 if (isTargetMacOS() && getArch() == llvm::Triple::x86)
941 ObjCRuntime runtime = getDefaultObjCRuntime(/*nonfragile*/ true);
943 if ((runtime.hasNativeARC() || !isObjCAutoRefCount(Args)) &&
944 runtime.hasSubscripting())
947 SmallString<128> P(getDriver().ClangExecutable);
948 llvm::sys::path::remove_filename(P); // 'clang'
949 llvm::sys::path::remove_filename(P); // 'bin'
951 // 'libarclite' usually lives in the same toolchain as 'clang'. However, the
952 // Swift open source toolchains for macOS distribute Clang without libarclite.
953 // In that case, to allow the linker to find 'libarclite', we point to the
954 // 'libarclite' in the XcodeDefault toolchain instead.
955 if (getXcodeDeveloperPath(P).empty()) {
956 if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
957 // Try to infer the path to 'libarclite' in the toolchain from the
958 // specified SDK path.
959 StringRef XcodePathForSDK = getXcodeDeveloperPath(A->getValue());
960 if (!XcodePathForSDK.empty()) {
962 llvm::sys::path::append(P, "Toolchains/XcodeDefault.xctoolchain/usr");
967 CmdArgs.push_back("-force_load");
968 llvm::sys::path::append(P, "lib", "arc", "libarclite_");
969 // Mash in the platform.
970 if (isTargetWatchOSSimulator())
971 P += "watchsimulator";
972 else if (isTargetWatchOS())
974 else if (isTargetTvOSSimulator())
975 P += "appletvsimulator";
976 else if (isTargetTvOS())
978 else if (isTargetIOSSimulator())
979 P += "iphonesimulator";
980 else if (isTargetIPhoneOS())
986 CmdArgs.push_back(Args.MakeArgString(P));
989 unsigned DarwinClang::GetDefaultDwarfVersion() const {
990 // Default to use DWARF 2 on OS X 10.10 / iOS 8 and lower.
991 if ((isTargetMacOS() && isMacosxVersionLT(10, 11)) ||
992 (isTargetIOSBased() && isIPhoneOSVersionLT(9)))
997 void MachO::AddLinkRuntimeLib(const ArgList &Args, ArgStringList &CmdArgs,
998 StringRef Component, RuntimeLinkOptions Opts,
999 bool IsShared) const {
1000 SmallString<64> DarwinLibName = StringRef("libclang_rt.");
1001 // an Darwin the builtins compomnent is not in the library name
1002 if (Component != "builtins") {
1003 DarwinLibName += Component;
1004 if (!(Opts & RLO_IsEmbedded))
1005 DarwinLibName += "_";
1006 DarwinLibName += getOSLibraryNameSuffix();
1008 DarwinLibName += getOSLibraryNameSuffix(true);
1010 DarwinLibName += IsShared ? "_dynamic.dylib" : ".a";
1011 SmallString<128> Dir(getDriver().ResourceDir);
1012 llvm::sys::path::append(
1013 Dir, "lib", (Opts & RLO_IsEmbedded) ? "macho_embedded" : "darwin");
1015 SmallString<128> P(Dir);
1016 llvm::sys::path::append(P, DarwinLibName);
1018 // For now, allow missing resource libraries to support developers who may
1019 // not have compiler-rt checked out or integrated into their build (unless
1020 // we explicitly force linking with this library).
1021 if ((Opts & RLO_AlwaysLink) || getVFS().exists(P)) {
1022 const char *LibArg = Args.MakeArgString(P);
1023 if (Opts & RLO_FirstLink)
1024 CmdArgs.insert(CmdArgs.begin(), LibArg);
1026 CmdArgs.push_back(LibArg);
1029 // Adding the rpaths might negatively interact when other rpaths are involved,
1030 // so we should make sure we add the rpaths last, after all user-specified
1031 // rpaths. This is currently true from this place, but we need to be
1032 // careful if this function is ever called before user's rpaths are emitted.
1033 if (Opts & RLO_AddRPath) {
1034 assert(DarwinLibName.endswith(".dylib") && "must be a dynamic library");
1036 // Add @executable_path to rpath to support having the dylib copied with
1038 CmdArgs.push_back("-rpath");
1039 CmdArgs.push_back("@executable_path");
1041 // Add the path to the resource dir to rpath to support using the dylib
1042 // from the default location without copying.
1043 CmdArgs.push_back("-rpath");
1044 CmdArgs.push_back(Args.MakeArgString(Dir));
1048 StringRef Darwin::getPlatformFamily() const {
1049 switch (TargetPlatform) {
1050 case DarwinPlatformKind::MacOS:
1052 case DarwinPlatformKind::IPhoneOS:
1054 case DarwinPlatformKind::TvOS:
1056 case DarwinPlatformKind::WatchOS:
1059 llvm_unreachable("Unsupported platform");
1062 StringRef Darwin::getSDKName(StringRef isysroot) {
1063 // Assume SDK has path: SOME_PATH/SDKs/PlatformXX.YY.sdk
1064 llvm::sys::path::const_iterator SDKDir;
1065 auto BeginSDK = llvm::sys::path::begin(isysroot);
1066 auto EndSDK = llvm::sys::path::end(isysroot);
1067 for (auto IT = BeginSDK; IT != EndSDK; ++IT) {
1068 StringRef SDK = *IT;
1069 if (SDK.endswith(".sdk"))
1070 return SDK.slice(0, SDK.size() - 4);
1075 StringRef Darwin::getOSLibraryNameSuffix(bool IgnoreSim) const {
1076 switch (TargetPlatform) {
1077 case DarwinPlatformKind::MacOS:
1079 case DarwinPlatformKind::IPhoneOS:
1080 return TargetEnvironment == NativeEnvironment || IgnoreSim ? "ios"
1082 case DarwinPlatformKind::TvOS:
1083 return TargetEnvironment == NativeEnvironment || IgnoreSim ? "tvos"
1085 case DarwinPlatformKind::WatchOS:
1086 return TargetEnvironment == NativeEnvironment || IgnoreSim ? "watchos"
1089 llvm_unreachable("Unsupported platform");
1092 /// Check if the link command contains a symbol export directive.
1093 static bool hasExportSymbolDirective(const ArgList &Args) {
1094 for (Arg *A : Args) {
1095 if (A->getOption().matches(options::OPT_exported__symbols__list))
1097 if (!A->getOption().matches(options::OPT_Wl_COMMA) &&
1098 !A->getOption().matches(options::OPT_Xlinker))
1100 if (A->containsValue("-exported_symbols_list") ||
1101 A->containsValue("-exported_symbol"))
1107 /// Add an export directive for \p Symbol to the link command.
1108 static void addExportedSymbol(ArgStringList &CmdArgs, const char *Symbol) {
1109 CmdArgs.push_back("-exported_symbol");
1110 CmdArgs.push_back(Symbol);
1113 void Darwin::addProfileRTLibs(const ArgList &Args,
1114 ArgStringList &CmdArgs) const {
1115 if (!needsProfileRT(Args)) return;
1117 AddLinkRuntimeLib(Args, CmdArgs, "profile",
1118 RuntimeLinkOptions(RLO_AlwaysLink | RLO_FirstLink));
1120 // If we have a symbol export directive and we're linking in the profile
1121 // runtime, automatically export symbols necessary to implement some of the
1122 // runtime's functionality.
1123 if (hasExportSymbolDirective(Args)) {
1124 if (needsGCovInstrumentation(Args)) {
1125 addExportedSymbol(CmdArgs, "___gcov_flush");
1126 addExportedSymbol(CmdArgs, "_flush_fn_list");
1127 addExportedSymbol(CmdArgs, "_writeout_fn_list");
1129 addExportedSymbol(CmdArgs, "___llvm_profile_filename");
1130 addExportedSymbol(CmdArgs, "___llvm_profile_raw_version");
1132 addExportedSymbol(CmdArgs, "_lprofDirMode");
1136 void DarwinClang::AddLinkSanitizerLibArgs(const ArgList &Args,
1137 ArgStringList &CmdArgs,
1138 StringRef Sanitizer,
1139 bool Shared) const {
1140 auto RLO = RuntimeLinkOptions(RLO_AlwaysLink | (Shared ? RLO_AddRPath : 0U));
1141 AddLinkRuntimeLib(Args, CmdArgs, Sanitizer, RLO, Shared);
1144 ToolChain::RuntimeLibType DarwinClang::GetRuntimeLibType(
1145 const ArgList &Args) const {
1146 if (Arg* A = Args.getLastArg(options::OPT_rtlib_EQ)) {
1147 StringRef Value = A->getValue();
1148 if (Value != "compiler-rt")
1149 getDriver().Diag(clang::diag::err_drv_unsupported_rtlib_for_platform)
1150 << Value << "darwin";
1153 return ToolChain::RLT_CompilerRT;
1156 void DarwinClang::AddLinkRuntimeLibArgs(const ArgList &Args,
1157 ArgStringList &CmdArgs,
1158 bool ForceLinkBuiltinRT) const {
1159 // Call once to ensure diagnostic is printed if wrong value was specified
1160 GetRuntimeLibType(Args);
1162 // Darwin doesn't support real static executables, don't link any runtime
1163 // libraries with -static.
1164 if (Args.hasArg(options::OPT_static) ||
1165 Args.hasArg(options::OPT_fapple_kext) ||
1166 Args.hasArg(options::OPT_mkernel)) {
1167 if (ForceLinkBuiltinRT)
1168 AddLinkRuntimeLib(Args, CmdArgs, "builtins");
1172 // Reject -static-libgcc for now, we can deal with this when and if someone
1173 // cares. This is useful in situations where someone wants to statically link
1174 // something like libstdc++, and needs its runtime support routines.
1175 if (const Arg *A = Args.getLastArg(options::OPT_static_libgcc)) {
1176 getDriver().Diag(diag::err_drv_unsupported_opt) << A->getAsString(Args);
1180 const SanitizerArgs &Sanitize = getSanitizerArgs();
1181 if (Sanitize.needsAsanRt())
1182 AddLinkSanitizerLibArgs(Args, CmdArgs, "asan");
1183 if (Sanitize.needsLsanRt())
1184 AddLinkSanitizerLibArgs(Args, CmdArgs, "lsan");
1185 if (Sanitize.needsUbsanRt())
1186 AddLinkSanitizerLibArgs(Args, CmdArgs,
1187 Sanitize.requiresMinimalRuntime() ? "ubsan_minimal"
1189 Sanitize.needsSharedRt());
1190 if (Sanitize.needsTsanRt())
1191 AddLinkSanitizerLibArgs(Args, CmdArgs, "tsan");
1192 if (Sanitize.needsFuzzer() && !Args.hasArg(options::OPT_dynamiclib)) {
1193 AddLinkSanitizerLibArgs(Args, CmdArgs, "fuzzer", /*shared=*/false);
1195 // Libfuzzer is written in C++ and requires libcxx.
1196 AddCXXStdlibLibArgs(Args, CmdArgs);
1198 if (Sanitize.needsStatsRt()) {
1199 AddLinkRuntimeLib(Args, CmdArgs, "stats_client", RLO_AlwaysLink);
1200 AddLinkSanitizerLibArgs(Args, CmdArgs, "stats");
1203 const XRayArgs &XRay = getXRayArgs();
1204 if (XRay.needsXRayRt()) {
1205 AddLinkRuntimeLib(Args, CmdArgs, "xray");
1206 AddLinkRuntimeLib(Args, CmdArgs, "xray-basic");
1207 AddLinkRuntimeLib(Args, CmdArgs, "xray-fdr");
1210 // Otherwise link libSystem, then the dynamic runtime library, and finally any
1211 // target specific static runtime library.
1212 CmdArgs.push_back("-lSystem");
1214 // Select the dynamic runtime library and the target specific static library.
1215 if (isTargetIOSBased()) {
1216 // If we are compiling as iOS / simulator, don't attempt to link libgcc_s.1,
1217 // it never went into the SDK.
1218 // Linking against libgcc_s.1 isn't needed for iOS 5.0+
1219 if (isIPhoneOSVersionLT(5, 0) && !isTargetIOSSimulator() &&
1220 getTriple().getArch() != llvm::Triple::aarch64)
1221 CmdArgs.push_back("-lgcc_s.1");
1223 AddLinkRuntimeLib(Args, CmdArgs, "builtins");
1226 /// Returns the most appropriate macOS target version for the current process.
1228 /// If the macOS SDK version is the same or earlier than the system version,
1229 /// then the SDK version is returned. Otherwise the system version is returned.
1230 static std::string getSystemOrSDKMacOSVersion(StringRef MacOSSDKVersion) {
1231 unsigned Major, Minor, Micro;
1232 llvm::Triple SystemTriple(llvm::sys::getProcessTriple());
1233 if (!SystemTriple.isMacOSX())
1234 return MacOSSDKVersion;
1235 SystemTriple.getMacOSXVersion(Major, Minor, Micro);
1236 VersionTuple SystemVersion(Major, Minor, Micro);
1238 if (!Driver::GetReleaseVersion(MacOSSDKVersion, Major, Minor, Micro,
1240 return MacOSSDKVersion;
1241 VersionTuple SDKVersion(Major, Minor, Micro);
1242 if (SDKVersion > SystemVersion)
1243 return SystemVersion.getAsString();
1244 return MacOSSDKVersion;
1249 /// The Darwin OS that was selected or inferred from arguments / environment.
1250 struct DarwinPlatform {
1252 /// The OS was specified using the -target argument.
1254 /// The OS was specified using the -m<os>-version-min argument.
1256 /// The OS was specified using the OS_DEPLOYMENT_TARGET environment.
1257 DeploymentTargetEnv,
1258 /// The OS was inferred from the SDK.
1260 /// The OS was inferred from the -arch.
1264 using DarwinPlatformKind = Darwin::DarwinPlatformKind;
1265 using DarwinEnvironmentKind = Darwin::DarwinEnvironmentKind;
1267 DarwinPlatformKind getPlatform() const { return Platform; }
1269 DarwinEnvironmentKind getEnvironment() const { return Environment; }
1271 void setEnvironment(DarwinEnvironmentKind Kind) {
1273 InferSimulatorFromArch = false;
1276 StringRef getOSVersion() const {
1277 if (Kind == OSVersionArg)
1278 return Argument->getValue();
1282 void setOSVersion(StringRef S) {
1283 assert(Kind == TargetArg && "Unexpected kind!");
1287 bool hasOSVersion() const { return HasOSVersion; }
1289 /// Returns true if the target OS was explicitly specified.
1290 bool isExplicitlySpecified() const { return Kind <= DeploymentTargetEnv; }
1292 /// Returns true if the simulator environment can be inferred from the arch.
1293 bool canInferSimulatorFromArch() const { return InferSimulatorFromArch; }
1295 /// Adds the -m<os>-version-min argument to the compiler invocation.
1296 void addOSVersionMinArgument(DerivedArgList &Args, const OptTable &Opts) {
1299 assert(Kind != TargetArg && Kind != OSVersionArg && "Invalid kind");
1302 case DarwinPlatformKind::MacOS:
1303 Opt = options::OPT_mmacosx_version_min_EQ;
1305 case DarwinPlatformKind::IPhoneOS:
1306 Opt = options::OPT_miphoneos_version_min_EQ;
1308 case DarwinPlatformKind::TvOS:
1309 Opt = options::OPT_mtvos_version_min_EQ;
1311 case DarwinPlatformKind::WatchOS:
1312 Opt = options::OPT_mwatchos_version_min_EQ;
1315 Argument = Args.MakeJoinedArg(nullptr, Opts.getOption(Opt), OSVersion);
1316 Args.append(Argument);
1319 /// Returns the OS version with the argument / environment variable that
1321 std::string getAsString(DerivedArgList &Args, const OptTable &Opts) {
1325 case InferredFromSDK:
1326 case InferredFromArch:
1327 assert(Argument && "OS version argument not yet inferred");
1328 return Argument->getAsString(Args);
1329 case DeploymentTargetEnv:
1330 return (llvm::Twine(EnvVarName) + "=" + OSVersion).str();
1332 llvm_unreachable("Unsupported Darwin Source Kind");
1335 static DarwinPlatform createFromTarget(const llvm::Triple &TT,
1336 StringRef OSVersion, Arg *A) {
1337 DarwinPlatform Result(TargetArg, getPlatformFromOS(TT.getOS()), OSVersion,
1339 switch (TT.getEnvironment()) {
1340 case llvm::Triple::Simulator:
1341 Result.Environment = DarwinEnvironmentKind::Simulator;
1346 unsigned Major, Minor, Micro;
1347 TT.getOSVersion(Major, Minor, Micro);
1349 Result.HasOSVersion = false;
1352 static DarwinPlatform createOSVersionArg(DarwinPlatformKind Platform,
1354 return DarwinPlatform(OSVersionArg, Platform, A);
1356 static DarwinPlatform createDeploymentTargetEnv(DarwinPlatformKind Platform,
1357 StringRef EnvVarName,
1359 DarwinPlatform Result(DeploymentTargetEnv, Platform, Value);
1360 Result.EnvVarName = EnvVarName;
1363 static DarwinPlatform createFromSDK(DarwinPlatformKind Platform,
1365 bool IsSimulator = false) {
1366 DarwinPlatform Result(InferredFromSDK, Platform, Value);
1368 Result.Environment = DarwinEnvironmentKind::Simulator;
1369 Result.InferSimulatorFromArch = false;
1372 static DarwinPlatform createFromArch(llvm::Triple::OSType OS,
1374 return DarwinPlatform(InferredFromArch, getPlatformFromOS(OS), Value);
1377 /// Constructs an inferred SDKInfo value based on the version inferred from
1378 /// the SDK path itself. Only works for values that were created by inferring
1379 /// the platform from the SDKPath.
1380 DarwinSDKInfo inferSDKInfo() {
1381 assert(Kind == InferredFromSDK && "can infer SDK info only");
1382 llvm::VersionTuple Version;
1383 bool IsValid = !Version.tryParse(OSVersion);
1385 assert(IsValid && "invalid SDK version");
1386 return DarwinSDKInfo(Version);
1390 DarwinPlatform(SourceKind Kind, DarwinPlatformKind Platform, Arg *Argument)
1391 : Kind(Kind), Platform(Platform), Argument(Argument) {}
1392 DarwinPlatform(SourceKind Kind, DarwinPlatformKind Platform, StringRef Value,
1393 Arg *Argument = nullptr)
1394 : Kind(Kind), Platform(Platform), OSVersion(Value), Argument(Argument) {}
1396 static DarwinPlatformKind getPlatformFromOS(llvm::Triple::OSType OS) {
1398 case llvm::Triple::Darwin:
1399 case llvm::Triple::MacOSX:
1400 return DarwinPlatformKind::MacOS;
1401 case llvm::Triple::IOS:
1402 return DarwinPlatformKind::IPhoneOS;
1403 case llvm::Triple::TvOS:
1404 return DarwinPlatformKind::TvOS;
1405 case llvm::Triple::WatchOS:
1406 return DarwinPlatformKind::WatchOS;
1408 llvm_unreachable("Unable to infer Darwin variant");
1413 DarwinPlatformKind Platform;
1414 DarwinEnvironmentKind Environment = DarwinEnvironmentKind::NativeEnvironment;
1415 std::string OSVersion;
1416 bool HasOSVersion = true, InferSimulatorFromArch = true;
1418 StringRef EnvVarName;
1421 /// Returns the deployment target that's specified using the -m<os>-version-min
1423 Optional<DarwinPlatform>
1424 getDeploymentTargetFromOSVersionArg(DerivedArgList &Args,
1425 const Driver &TheDriver) {
1426 Arg *OSXVersion = Args.getLastArg(options::OPT_mmacosx_version_min_EQ);
1427 Arg *iOSVersion = Args.getLastArg(options::OPT_miphoneos_version_min_EQ,
1428 options::OPT_mios_simulator_version_min_EQ);
1430 Args.getLastArg(options::OPT_mtvos_version_min_EQ,
1431 options::OPT_mtvos_simulator_version_min_EQ);
1432 Arg *WatchOSVersion =
1433 Args.getLastArg(options::OPT_mwatchos_version_min_EQ,
1434 options::OPT_mwatchos_simulator_version_min_EQ);
1436 if (iOSVersion || TvOSVersion || WatchOSVersion) {
1437 TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
1438 << OSXVersion->getAsString(Args)
1439 << (iOSVersion ? iOSVersion
1440 : TvOSVersion ? TvOSVersion : WatchOSVersion)
1441 ->getAsString(Args);
1443 return DarwinPlatform::createOSVersionArg(Darwin::MacOS, OSXVersion);
1444 } else if (iOSVersion) {
1445 if (TvOSVersion || WatchOSVersion) {
1446 TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
1447 << iOSVersion->getAsString(Args)
1448 << (TvOSVersion ? TvOSVersion : WatchOSVersion)->getAsString(Args);
1450 return DarwinPlatform::createOSVersionArg(Darwin::IPhoneOS, iOSVersion);
1451 } else if (TvOSVersion) {
1452 if (WatchOSVersion) {
1453 TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
1454 << TvOSVersion->getAsString(Args)
1455 << WatchOSVersion->getAsString(Args);
1457 return DarwinPlatform::createOSVersionArg(Darwin::TvOS, TvOSVersion);
1458 } else if (WatchOSVersion)
1459 return DarwinPlatform::createOSVersionArg(Darwin::WatchOS, WatchOSVersion);
1463 /// Returns the deployment target that's specified using the
1464 /// OS_DEPLOYMENT_TARGET environment variable.
1465 Optional<DarwinPlatform>
1466 getDeploymentTargetFromEnvironmentVariables(const Driver &TheDriver,
1467 const llvm::Triple &Triple) {
1468 std::string Targets[Darwin::LastDarwinPlatform + 1];
1469 const char *EnvVars[] = {
1470 "MACOSX_DEPLOYMENT_TARGET",
1471 "IPHONEOS_DEPLOYMENT_TARGET",
1472 "TVOS_DEPLOYMENT_TARGET",
1473 "WATCHOS_DEPLOYMENT_TARGET",
1475 static_assert(llvm::array_lengthof(EnvVars) == Darwin::LastDarwinPlatform + 1,
1476 "Missing platform");
1477 for (const auto &I : llvm::enumerate(llvm::makeArrayRef(EnvVars))) {
1478 if (char *Env = ::getenv(I.value()))
1479 Targets[I.index()] = Env;
1482 // Allow conflicts among OSX and iOS for historical reasons, but choose the
1483 // default platform.
1484 if (!Targets[Darwin::MacOS].empty() &&
1485 (!Targets[Darwin::IPhoneOS].empty() ||
1486 !Targets[Darwin::WatchOS].empty() || !Targets[Darwin::TvOS].empty())) {
1487 if (Triple.getArch() == llvm::Triple::arm ||
1488 Triple.getArch() == llvm::Triple::aarch64 ||
1489 Triple.getArch() == llvm::Triple::thumb)
1490 Targets[Darwin::MacOS] = "";
1492 Targets[Darwin::IPhoneOS] = Targets[Darwin::WatchOS] =
1493 Targets[Darwin::TvOS] = "";
1495 // Don't allow conflicts in any other platform.
1496 int FirstTarget = llvm::array_lengthof(Targets);
1497 for (int I = 0; I != llvm::array_lengthof(Targets); ++I) {
1498 if (Targets[I].empty())
1500 if (FirstTarget == llvm::array_lengthof(Targets))
1503 TheDriver.Diag(diag::err_drv_conflicting_deployment_targets)
1504 << Targets[FirstTarget] << Targets[I];
1508 for (const auto &Target : llvm::enumerate(llvm::makeArrayRef(Targets))) {
1509 if (!Target.value().empty())
1510 return DarwinPlatform::createDeploymentTargetEnv(
1511 (Darwin::DarwinPlatformKind)Target.index(), EnvVars[Target.index()],
1517 /// Tries to infer the deployment target from the SDK specified by -isysroot
1518 /// (or SDKROOT). Uses the version specified in the SDKSettings.json file if
1520 Optional<DarwinPlatform>
1521 inferDeploymentTargetFromSDK(DerivedArgList &Args,
1522 const Optional<DarwinSDKInfo> &SDKInfo) {
1523 const Arg *A = Args.getLastArg(options::OPT_isysroot);
1526 StringRef isysroot = A->getValue();
1527 StringRef SDK = Darwin::getSDKName(isysroot);
1531 std::string Version;
1533 // Get the version from the SDKSettings.json if it's available.
1534 Version = SDKInfo->getVersion().getAsString();
1536 // Slice the version number out.
1537 // Version number is between the first and the last number.
1538 size_t StartVer = SDK.find_first_of("0123456789");
1539 size_t EndVer = SDK.find_last_of("0123456789");
1540 if (StartVer != StringRef::npos && EndVer > StartVer)
1541 Version = SDK.slice(StartVer, EndVer + 1);
1543 if (Version.empty())
1546 if (SDK.startswith("iPhoneOS") || SDK.startswith("iPhoneSimulator"))
1547 return DarwinPlatform::createFromSDK(
1548 Darwin::IPhoneOS, Version,
1549 /*IsSimulator=*/SDK.startswith("iPhoneSimulator"));
1550 else if (SDK.startswith("MacOSX"))
1551 return DarwinPlatform::createFromSDK(Darwin::MacOS,
1552 getSystemOrSDKMacOSVersion(Version));
1553 else if (SDK.startswith("WatchOS") || SDK.startswith("WatchSimulator"))
1554 return DarwinPlatform::createFromSDK(
1555 Darwin::WatchOS, Version,
1556 /*IsSimulator=*/SDK.startswith("WatchSimulator"));
1557 else if (SDK.startswith("AppleTVOS") || SDK.startswith("AppleTVSimulator"))
1558 return DarwinPlatform::createFromSDK(
1559 Darwin::TvOS, Version,
1560 /*IsSimulator=*/SDK.startswith("AppleTVSimulator"));
1564 std::string getOSVersion(llvm::Triple::OSType OS, const llvm::Triple &Triple,
1565 const Driver &TheDriver) {
1566 unsigned Major, Minor, Micro;
1567 llvm::Triple SystemTriple(llvm::sys::getProcessTriple());
1569 case llvm::Triple::Darwin:
1570 case llvm::Triple::MacOSX:
1571 // If there is no version specified on triple, and both host and target are
1572 // macos, use the host triple to infer OS version.
1573 if (Triple.isMacOSX() && SystemTriple.isMacOSX() &&
1574 !Triple.getOSMajorVersion())
1575 SystemTriple.getMacOSXVersion(Major, Minor, Micro);
1576 else if (!Triple.getMacOSXVersion(Major, Minor, Micro))
1577 TheDriver.Diag(diag::err_drv_invalid_darwin_version)
1578 << Triple.getOSName();
1580 case llvm::Triple::IOS:
1581 Triple.getiOSVersion(Major, Minor, Micro);
1583 case llvm::Triple::TvOS:
1584 Triple.getOSVersion(Major, Minor, Micro);
1586 case llvm::Triple::WatchOS:
1587 Triple.getWatchOSVersion(Major, Minor, Micro);
1590 llvm_unreachable("Unexpected OS type");
1594 std::string OSVersion;
1595 llvm::raw_string_ostream(OSVersion) << Major << '.' << Minor << '.' << Micro;
1599 /// Tries to infer the target OS from the -arch.
1600 Optional<DarwinPlatform>
1601 inferDeploymentTargetFromArch(DerivedArgList &Args, const Darwin &Toolchain,
1602 const llvm::Triple &Triple,
1603 const Driver &TheDriver) {
1604 llvm::Triple::OSType OSTy = llvm::Triple::UnknownOS;
1606 StringRef MachOArchName = Toolchain.getMachOArchName(Args);
1607 if (MachOArchName == "armv7" || MachOArchName == "armv7s" ||
1608 MachOArchName == "arm64")
1609 OSTy = llvm::Triple::IOS;
1610 else if (MachOArchName == "armv7k")
1611 OSTy = llvm::Triple::WatchOS;
1612 else if (MachOArchName != "armv6m" && MachOArchName != "armv7m" &&
1613 MachOArchName != "armv7em")
1614 OSTy = llvm::Triple::MacOSX;
1616 if (OSTy == llvm::Triple::UnknownOS)
1618 return DarwinPlatform::createFromArch(OSTy,
1619 getOSVersion(OSTy, Triple, TheDriver));
1622 /// Returns the deployment target that's specified using the -target option.
1623 Optional<DarwinPlatform> getDeploymentTargetFromTargetArg(
1624 DerivedArgList &Args, const llvm::Triple &Triple, const Driver &TheDriver) {
1625 if (!Args.hasArg(options::OPT_target))
1627 if (Triple.getOS() == llvm::Triple::Darwin ||
1628 Triple.getOS() == llvm::Triple::UnknownOS)
1630 std::string OSVersion = getOSVersion(Triple.getOS(), Triple, TheDriver);
1631 return DarwinPlatform::createFromTarget(Triple, OSVersion,
1632 Args.getLastArg(options::OPT_target));
1635 Optional<DarwinSDKInfo> parseSDKSettings(llvm::vfs::FileSystem &VFS,
1636 const ArgList &Args,
1637 const Driver &TheDriver) {
1638 const Arg *A = Args.getLastArg(options::OPT_isysroot);
1641 StringRef isysroot = A->getValue();
1642 auto SDKInfoOrErr = driver::parseDarwinSDKInfo(VFS, isysroot);
1643 if (!SDKInfoOrErr) {
1644 llvm::consumeError(SDKInfoOrErr.takeError());
1645 TheDriver.Diag(diag::warn_drv_darwin_sdk_invalid_settings);
1648 return *SDKInfoOrErr;
1653 void Darwin::AddDeploymentTarget(DerivedArgList &Args) const {
1654 const OptTable &Opts = getDriver().getOpts();
1656 // Support allowing the SDKROOT environment variable used by xcrun and other
1657 // Xcode tools to define the default sysroot, by making it the default for
1659 if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
1660 // Warn if the path does not exist.
1661 if (!getVFS().exists(A->getValue()))
1662 getDriver().Diag(clang::diag::warn_missing_sysroot) << A->getValue();
1664 if (char *env = ::getenv("SDKROOT")) {
1665 // We only use this value as the default if it is an absolute path,
1666 // exists, and it is not the root path.
1667 if (llvm::sys::path::is_absolute(env) && getVFS().exists(env) &&
1668 StringRef(env) != "/") {
1669 Args.append(Args.MakeSeparateArg(
1670 nullptr, Opts.getOption(options::OPT_isysroot), env));
1675 // Read the SDKSettings.json file for more information, like the SDK version
1676 // that we can pass down to the compiler.
1677 SDKInfo = parseSDKSettings(getVFS(), Args, getDriver());
1679 // The OS and the version can be specified using the -target argument.
1680 Optional<DarwinPlatform> OSTarget =
1681 getDeploymentTargetFromTargetArg(Args, getTriple(), getDriver());
1683 Optional<DarwinPlatform> OSVersionArgTarget =
1684 getDeploymentTargetFromOSVersionArg(Args, getDriver());
1685 if (OSVersionArgTarget) {
1686 unsigned TargetMajor, TargetMinor, TargetMicro;
1688 unsigned ArgMajor, ArgMinor, ArgMicro;
1690 if (OSTarget->getPlatform() != OSVersionArgTarget->getPlatform() ||
1691 (Driver::GetReleaseVersion(OSTarget->getOSVersion(), TargetMajor,
1692 TargetMinor, TargetMicro, TargetExtra) &&
1693 Driver::GetReleaseVersion(OSVersionArgTarget->getOSVersion(),
1694 ArgMajor, ArgMinor, ArgMicro, ArgExtra) &&
1695 (VersionTuple(TargetMajor, TargetMinor, TargetMicro) !=
1696 VersionTuple(ArgMajor, ArgMinor, ArgMicro) ||
1697 TargetExtra != ArgExtra))) {
1698 // Select the OS version from the -m<os>-version-min argument when
1699 // the -target does not include an OS version.
1700 if (OSTarget->getPlatform() == OSVersionArgTarget->getPlatform() &&
1701 !OSTarget->hasOSVersion()) {
1702 OSTarget->setOSVersion(OSVersionArgTarget->getOSVersion());
1704 // Warn about -m<os>-version-min that doesn't match the OS version
1705 // that's specified in the target.
1706 std::string OSVersionArg =
1707 OSVersionArgTarget->getAsString(Args, Opts);
1708 std::string TargetArg = OSTarget->getAsString(Args, Opts);
1709 getDriver().Diag(clang::diag::warn_drv_overriding_flag_option)
1710 << OSVersionArg << TargetArg;
1715 // The OS target can be specified using the -m<os>version-min argument.
1716 OSTarget = getDeploymentTargetFromOSVersionArg(Args, getDriver());
1717 // If no deployment target was specified on the command line, check for
1718 // environment defines.
1721 getDeploymentTargetFromEnvironmentVariables(getDriver(), getTriple());
1723 // Don't infer simulator from the arch when the SDK is also specified.
1724 Optional<DarwinPlatform> SDKTarget =
1725 inferDeploymentTargetFromSDK(Args, SDKInfo);
1727 OSTarget->setEnvironment(SDKTarget->getEnvironment());
1730 // If there is no command-line argument to specify the Target version and
1731 // no environment variable defined, see if we can set the default based
1732 // on -isysroot using SDKSettings.json if it exists.
1734 OSTarget = inferDeploymentTargetFromSDK(Args, SDKInfo);
1735 /// If the target was successfully constructed from the SDK path, try to
1736 /// infer the SDK info if the SDK doesn't have it.
1737 if (OSTarget && !SDKInfo)
1738 SDKInfo = OSTarget->inferSDKInfo();
1740 // If no OS targets have been specified, try to guess platform from -target
1741 // or arch name and compute the version from the triple.
1744 inferDeploymentTargetFromArch(Args, *this, getTriple(), getDriver());
1747 assert(OSTarget && "Unable to infer Darwin variant");
1748 OSTarget->addOSVersionMinArgument(Args, Opts);
1749 DarwinPlatformKind Platform = OSTarget->getPlatform();
1751 unsigned Major, Minor, Micro;
1753 // Set the tool chain target information.
1754 if (Platform == MacOS) {
1755 if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1757 HadExtra || Major != 10 || Minor >= 100 || Micro >= 100)
1758 getDriver().Diag(diag::err_drv_invalid_version_number)
1759 << OSTarget->getAsString(Args, Opts);
1760 } else if (Platform == IPhoneOS) {
1761 if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1763 HadExtra || Major >= 100 || Minor >= 100 || Micro >= 100)
1764 getDriver().Diag(diag::err_drv_invalid_version_number)
1765 << OSTarget->getAsString(Args, Opts);
1767 // For 32-bit targets, the deployment target for iOS has to be earlier than
1769 if (getTriple().isArch32Bit() && Major >= 11) {
1770 // If the deployment target is explicitly specified, print a diagnostic.
1771 if (OSTarget->isExplicitlySpecified()) {
1772 getDriver().Diag(diag::warn_invalid_ios_deployment_target)
1773 << OSTarget->getAsString(Args, Opts);
1774 // Otherwise, set it to 10.99.99.
1781 } else if (Platform == TvOS) {
1782 if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1784 HadExtra || Major >= 100 || Minor >= 100 || Micro >= 100)
1785 getDriver().Diag(diag::err_drv_invalid_version_number)
1786 << OSTarget->getAsString(Args, Opts);
1787 } else if (Platform == WatchOS) {
1788 if (!Driver::GetReleaseVersion(OSTarget->getOSVersion(), Major, Minor,
1790 HadExtra || Major >= 10 || Minor >= 100 || Micro >= 100)
1791 getDriver().Diag(diag::err_drv_invalid_version_number)
1792 << OSTarget->getAsString(Args, Opts);
1794 llvm_unreachable("unknown kind of Darwin platform");
1796 DarwinEnvironmentKind Environment = OSTarget->getEnvironment();
1797 // Recognize iOS targets with an x86 architecture as the iOS simulator.
1798 if (Environment == NativeEnvironment && Platform != MacOS &&
1799 OSTarget->canInferSimulatorFromArch() &&
1800 (getTriple().getArch() == llvm::Triple::x86 ||
1801 getTriple().getArch() == llvm::Triple::x86_64))
1802 Environment = Simulator;
1804 setTarget(Platform, Environment, Major, Minor, Micro);
1806 if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
1807 StringRef SDK = getSDKName(A->getValue());
1808 if (SDK.size() > 0) {
1809 size_t StartVer = SDK.find_first_of("0123456789");
1810 StringRef SDKName = SDK.slice(0, StartVer);
1811 if (!SDKName.startswith(getPlatformFamily()))
1812 getDriver().Diag(diag::warn_incompatible_sysroot)
1813 << SDKName << getPlatformFamily();
1818 // Returns the effective header sysroot path to use. This comes either from
1819 // -isysroot or --sysroot.
1820 llvm::StringRef DarwinClang::GetHeaderSysroot(const llvm::opt::ArgList &DriverArgs) const {
1821 if(DriverArgs.hasArg(options::OPT_isysroot))
1822 return DriverArgs.getLastArgValue(options::OPT_isysroot);
1823 if (!getDriver().SysRoot.empty())
1824 return getDriver().SysRoot;
1828 void DarwinClang::AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
1829 llvm::opt::ArgStringList &CC1Args) const {
1830 const Driver &D = getDriver();
1832 llvm::StringRef Sysroot = GetHeaderSysroot(DriverArgs);
1834 bool NoStdInc = DriverArgs.hasArg(options::OPT_nostdinc);
1835 bool NoStdlibInc = DriverArgs.hasArg(options::OPT_nostdlibinc);
1836 bool NoBuiltinInc = DriverArgs.hasArg(options::OPT_nobuiltininc);
1838 // Add <sysroot>/usr/local/include
1839 if (!NoStdInc && !NoStdlibInc) {
1840 SmallString<128> P(Sysroot);
1841 llvm::sys::path::append(P, "usr", "local", "include");
1842 addSystemInclude(DriverArgs, CC1Args, P);
1845 // Add the Clang builtin headers (<resource>/include)
1846 if (!NoStdInc && !NoBuiltinInc) {
1847 SmallString<128> P(D.ResourceDir);
1848 llvm::sys::path::append(P, "include");
1849 addSystemInclude(DriverArgs, CC1Args, P);
1852 if (NoStdInc || NoStdlibInc)
1855 // Check for configure-time C include directories.
1856 llvm::StringRef CIncludeDirs(C_INCLUDE_DIRS);
1857 if (!CIncludeDirs.empty()) {
1858 llvm::SmallVector<llvm::StringRef, 5> dirs;
1859 CIncludeDirs.split(dirs, ":");
1860 for (llvm::StringRef dir : dirs) {
1861 llvm::StringRef Prefix =
1862 llvm::sys::path::is_absolute(dir) ? llvm::StringRef(Sysroot) : "";
1863 addExternCSystemInclude(DriverArgs, CC1Args, Prefix + dir);
1866 // Otherwise, add <sysroot>/usr/include.
1867 SmallString<128> P(Sysroot);
1868 llvm::sys::path::append(P, "usr", "include");
1869 addExternCSystemInclude(DriverArgs, CC1Args, P.str());
1873 bool DarwinClang::AddGnuCPlusPlusIncludePaths(const llvm::opt::ArgList &DriverArgs,
1874 llvm::opt::ArgStringList &CC1Args,
1875 llvm::SmallString<128> Base,
1876 llvm::StringRef Version,
1877 llvm::StringRef ArchDir,
1878 llvm::StringRef BitDir) const {
1879 llvm::sys::path::append(Base, Version);
1882 addSystemInclude(DriverArgs, CC1Args, Base);
1884 // Add the multilib dirs
1886 llvm::SmallString<128> P = Base;
1887 if (!ArchDir.empty())
1888 llvm::sys::path::append(P, ArchDir);
1889 if (!BitDir.empty())
1890 llvm::sys::path::append(P, BitDir);
1891 addSystemInclude(DriverArgs, CC1Args, P);
1894 // Add the backward dir
1896 llvm::SmallString<128> P = Base;
1897 llvm::sys::path::append(P, "backward");
1898 addSystemInclude(DriverArgs, CC1Args, P);
1901 return getVFS().exists(Base);
1904 void DarwinClang::AddClangCXXStdlibIncludeArgs(
1905 const llvm::opt::ArgList &DriverArgs,
1906 llvm::opt::ArgStringList &CC1Args) const {
1907 // The implementation from a base class will pass through the -stdlib to
1909 // FIXME: this should not be necessary, remove usages in the frontend
1910 // (e.g. HeaderSearchOptions::UseLibcxx) and don't pipe -stdlib.
1911 // Also check whether this is used for setting library search paths.
1912 ToolChain::AddClangCXXStdlibIncludeArgs(DriverArgs, CC1Args);
1914 if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
1915 DriverArgs.hasArg(options::OPT_nostdincxx))
1918 llvm::StringRef Sysroot = GetHeaderSysroot(DriverArgs);
1920 switch (GetCXXStdlibType(DriverArgs)) {
1921 case ToolChain::CST_Libcxx: {
1922 // On Darwin, libc++ is installed alongside the compiler in
1923 // include/c++/v1, so get from '<install>/bin' to '<install>/include/c++/v1'.
1925 llvm::SmallString<128> P = llvm::StringRef(getDriver().getInstalledDir());
1926 // Note that P can be relative, so we have to '..' and not parent_path.
1927 llvm::sys::path::append(P, "..", "include", "c++", "v1");
1928 addSystemInclude(DriverArgs, CC1Args, P);
1930 // Also add <sysroot>/usr/include/c++/v1 unless -nostdinc is used,
1931 // to match the legacy behavior in CC1.
1932 if (!DriverArgs.hasArg(options::OPT_nostdinc)) {
1933 llvm::SmallString<128> P = Sysroot;
1934 llvm::sys::path::append(P, "usr", "include", "c++", "v1");
1935 addSystemInclude(DriverArgs, CC1Args, P);
1940 case ToolChain::CST_Libstdcxx:
1941 llvm::SmallString<128> UsrIncludeCxx = Sysroot;
1942 llvm::sys::path::append(UsrIncludeCxx, "usr", "include", "c++");
1944 llvm::Triple::ArchType arch = getTriple().getArch();
1945 bool IsBaseFound = true;
1949 case llvm::Triple::ppc:
1950 case llvm::Triple::ppc64:
1951 IsBaseFound = AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
1953 "powerpc-apple-darwin10",
1954 arch == llvm::Triple::ppc64 ? "ppc64" : "");
1955 IsBaseFound |= AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
1956 "4.0.0", "powerpc-apple-darwin10",
1957 arch == llvm::Triple::ppc64 ? "ppc64" : "");
1960 case llvm::Triple::x86:
1961 case llvm::Triple::x86_64:
1962 IsBaseFound = AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
1964 "i686-apple-darwin10",
1965 arch == llvm::Triple::x86_64 ? "x86_64" : "");
1966 IsBaseFound |= AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
1967 "4.0.0", "i686-apple-darwin8",
1971 case llvm::Triple::arm:
1972 case llvm::Triple::thumb:
1973 IsBaseFound = AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
1975 "arm-apple-darwin10",
1977 IsBaseFound |= AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
1979 "arm-apple-darwin10",
1983 case llvm::Triple::aarch64:
1984 IsBaseFound = AddGnuCPlusPlusIncludePaths(DriverArgs, CC1Args, UsrIncludeCxx,
1986 "arm64-apple-darwin10",
1992 getDriver().Diag(diag::warn_drv_libstdcxx_not_found);
1998 void DarwinClang::AddCXXStdlibLibArgs(const ArgList &Args,
1999 ArgStringList &CmdArgs) const {
2000 CXXStdlibType Type = GetCXXStdlibType(Args);
2003 case ToolChain::CST_Libcxx:
2004 CmdArgs.push_back("-lc++");
2007 case ToolChain::CST_Libstdcxx:
2008 // Unfortunately, -lstdc++ doesn't always exist in the standard search path;
2009 // it was previously found in the gcc lib dir. However, for all the Darwin
2010 // platforms we care about it was -lstdc++.6, so we search for that
2011 // explicitly if we can't see an obvious -lstdc++ candidate.
2013 // Check in the sysroot first.
2014 if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
2015 SmallString<128> P(A->getValue());
2016 llvm::sys::path::append(P, "usr", "lib", "libstdc++.dylib");
2018 if (!getVFS().exists(P)) {
2019 llvm::sys::path::remove_filename(P);
2020 llvm::sys::path::append(P, "libstdc++.6.dylib");
2021 if (getVFS().exists(P)) {
2022 CmdArgs.push_back(Args.MakeArgString(P));
2028 // Otherwise, look in the root.
2029 // FIXME: This should be removed someday when we don't have to care about
2030 // 10.6 and earlier, where /usr/lib/libstdc++.dylib does not exist.
2031 if (!getVFS().exists("/usr/lib/libstdc++.dylib") &&
2032 getVFS().exists("/usr/lib/libstdc++.6.dylib")) {
2033 CmdArgs.push_back("/usr/lib/libstdc++.6.dylib");
2037 // Otherwise, let the linker search.
2038 CmdArgs.push_back("-lstdc++");
2043 void DarwinClang::AddCCKextLibArgs(const ArgList &Args,
2044 ArgStringList &CmdArgs) const {
2045 // For Darwin platforms, use the compiler-rt-based support library
2046 // instead of the gcc-provided one (which is also incidentally
2047 // only present in the gcc lib dir, which makes it hard to find).
2049 SmallString<128> P(getDriver().ResourceDir);
2050 llvm::sys::path::append(P, "lib", "darwin");
2052 // Use the newer cc_kext for iOS ARM after 6.0.
2053 if (isTargetWatchOS()) {
2054 llvm::sys::path::append(P, "libclang_rt.cc_kext_watchos.a");
2055 } else if (isTargetTvOS()) {
2056 llvm::sys::path::append(P, "libclang_rt.cc_kext_tvos.a");
2057 } else if (isTargetIPhoneOS()) {
2058 llvm::sys::path::append(P, "libclang_rt.cc_kext_ios.a");
2060 llvm::sys::path::append(P, "libclang_rt.cc_kext.a");
2063 // For now, allow missing resource libraries to support developers who may
2064 // not have compiler-rt checked out or integrated into their build.
2065 if (getVFS().exists(P))
2066 CmdArgs.push_back(Args.MakeArgString(P));
2069 DerivedArgList *MachO::TranslateArgs(const DerivedArgList &Args,
2070 StringRef BoundArch,
2071 Action::OffloadKind) const {
2072 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
2073 const OptTable &Opts = getDriver().getOpts();
2075 // FIXME: We really want to get out of the tool chain level argument
2076 // translation business, as it makes the driver functionality much
2077 // more opaque. For now, we follow gcc closely solely for the
2078 // purpose of easily achieving feature parity & testability. Once we
2079 // have something that works, we should reevaluate each translation
2080 // and try to push it down into tool specific logic.
2082 for (Arg *A : Args) {
2083 if (A->getOption().matches(options::OPT_Xarch__)) {
2084 // Skip this argument unless the architecture matches either the toolchain
2085 // triple arch, or the arch being bound.
2086 llvm::Triple::ArchType XarchArch =
2087 tools::darwin::getArchTypeForMachOArchName(A->getValue(0));
2088 if (!(XarchArch == getArch() ||
2089 (!BoundArch.empty() &&
2091 tools::darwin::getArchTypeForMachOArchName(BoundArch))))
2094 Arg *OriginalArg = A;
2095 unsigned Index = Args.getBaseArgs().MakeIndex(A->getValue(1));
2096 unsigned Prev = Index;
2097 std::unique_ptr<Arg> XarchArg(Opts.ParseOneArg(Args, Index));
2099 // If the argument parsing failed or more than one argument was
2100 // consumed, the -Xarch_ argument's parameter tried to consume
2101 // extra arguments. Emit an error and ignore.
2103 // We also want to disallow any options which would alter the
2104 // driver behavior; that isn't going to work in our model. We
2105 // use isDriverOption() as an approximation, although things
2106 // like -O4 are going to slip through.
2107 if (!XarchArg || Index > Prev + 1) {
2108 getDriver().Diag(diag::err_drv_invalid_Xarch_argument_with_args)
2109 << A->getAsString(Args);
2111 } else if (XarchArg->getOption().hasFlag(options::DriverOption)) {
2112 getDriver().Diag(diag::err_drv_invalid_Xarch_argument_isdriver)
2113 << A->getAsString(Args);
2117 XarchArg->setBaseArg(A);
2119 A = XarchArg.release();
2120 DAL->AddSynthesizedArg(A);
2122 // Linker input arguments require custom handling. The problem is that we
2123 // have already constructed the phase actions, so we can not treat them as
2124 // "input arguments".
2125 if (A->getOption().hasFlag(options::LinkerInput)) {
2126 // Convert the argument into individual Zlinker_input_args.
2127 for (const char *Value : A->getValues()) {
2128 DAL->AddSeparateArg(
2129 OriginalArg, Opts.getOption(options::OPT_Zlinker_input), Value);
2135 // Sob. These is strictly gcc compatible for the time being. Apple
2136 // gcc translates options twice, which means that self-expanding
2137 // options add duplicates.
2138 switch ((options::ID)A->getOption().getID()) {
2143 case options::OPT_mkernel:
2144 case options::OPT_fapple_kext:
2146 DAL->AddFlagArg(A, Opts.getOption(options::OPT_static));
2149 case options::OPT_dependency_file:
2150 DAL->AddSeparateArg(A, Opts.getOption(options::OPT_MF), A->getValue());
2153 case options::OPT_gfull:
2154 DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag));
2156 A, Opts.getOption(options::OPT_fno_eliminate_unused_debug_symbols));
2159 case options::OPT_gused:
2160 DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag));
2162 A, Opts.getOption(options::OPT_feliminate_unused_debug_symbols));
2165 case options::OPT_shared:
2166 DAL->AddFlagArg(A, Opts.getOption(options::OPT_dynamiclib));
2169 case options::OPT_fconstant_cfstrings:
2170 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mconstant_cfstrings));
2173 case options::OPT_fno_constant_cfstrings:
2174 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_constant_cfstrings));
2177 case options::OPT_Wnonportable_cfstrings:
2179 Opts.getOption(options::OPT_mwarn_nonportable_cfstrings));
2182 case options::OPT_Wno_nonportable_cfstrings:
2184 A, Opts.getOption(options::OPT_mno_warn_nonportable_cfstrings));
2187 case options::OPT_fpascal_strings:
2188 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mpascal_strings));
2191 case options::OPT_fno_pascal_strings:
2192 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_pascal_strings));
2197 if (getTriple().getArch() == llvm::Triple::x86 ||
2198 getTriple().getArch() == llvm::Triple::x86_64)
2199 if (!Args.hasArgNoClaim(options::OPT_mtune_EQ))
2200 DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_mtune_EQ),
2203 // Add the arch options based on the particular spelling of -arch, to match
2204 // how the driver driver works.
2205 if (!BoundArch.empty()) {
2206 StringRef Name = BoundArch;
2207 const Option MCpu = Opts.getOption(options::OPT_mcpu_EQ);
2208 const Option MArch = Opts.getOption(clang::driver::options::OPT_march_EQ);
2210 // This code must be kept in sync with LLVM's getArchTypeForDarwinArch,
2211 // which defines the list of which architectures we accept.
2214 else if (Name == "ppc601")
2215 DAL->AddJoinedArg(nullptr, MCpu, "601");
2216 else if (Name == "ppc603")
2217 DAL->AddJoinedArg(nullptr, MCpu, "603");
2218 else if (Name == "ppc604")
2219 DAL->AddJoinedArg(nullptr, MCpu, "604");
2220 else if (Name == "ppc604e")
2221 DAL->AddJoinedArg(nullptr, MCpu, "604e");
2222 else if (Name == "ppc750")
2223 DAL->AddJoinedArg(nullptr, MCpu, "750");
2224 else if (Name == "ppc7400")
2225 DAL->AddJoinedArg(nullptr, MCpu, "7400");
2226 else if (Name == "ppc7450")
2227 DAL->AddJoinedArg(nullptr, MCpu, "7450");
2228 else if (Name == "ppc970")
2229 DAL->AddJoinedArg(nullptr, MCpu, "970");
2231 else if (Name == "ppc64" || Name == "ppc64le")
2232 DAL->AddFlagArg(nullptr, Opts.getOption(options::OPT_m64));
2234 else if (Name == "i386")
2236 else if (Name == "i486")
2237 DAL->AddJoinedArg(nullptr, MArch, "i486");
2238 else if (Name == "i586")
2239 DAL->AddJoinedArg(nullptr, MArch, "i586");
2240 else if (Name == "i686")
2241 DAL->AddJoinedArg(nullptr, MArch, "i686");
2242 else if (Name == "pentium")
2243 DAL->AddJoinedArg(nullptr, MArch, "pentium");
2244 else if (Name == "pentium2")
2245 DAL->AddJoinedArg(nullptr, MArch, "pentium2");
2246 else if (Name == "pentpro")
2247 DAL->AddJoinedArg(nullptr, MArch, "pentiumpro");
2248 else if (Name == "pentIIm3")
2249 DAL->AddJoinedArg(nullptr, MArch, "pentium2");
2251 else if (Name == "x86_64" || Name == "x86_64h")
2252 DAL->AddFlagArg(nullptr, Opts.getOption(options::OPT_m64));
2254 else if (Name == "arm")
2255 DAL->AddJoinedArg(nullptr, MArch, "armv4t");
2256 else if (Name == "armv4t")
2257 DAL->AddJoinedArg(nullptr, MArch, "armv4t");
2258 else if (Name == "armv5")
2259 DAL->AddJoinedArg(nullptr, MArch, "armv5tej");
2260 else if (Name == "xscale")
2261 DAL->AddJoinedArg(nullptr, MArch, "xscale");
2262 else if (Name == "armv6")
2263 DAL->AddJoinedArg(nullptr, MArch, "armv6k");
2264 else if (Name == "armv6m")
2265 DAL->AddJoinedArg(nullptr, MArch, "armv6m");
2266 else if (Name == "armv7")
2267 DAL->AddJoinedArg(nullptr, MArch, "armv7a");
2268 else if (Name == "armv7em")
2269 DAL->AddJoinedArg(nullptr, MArch, "armv7em");
2270 else if (Name == "armv7k")
2271 DAL->AddJoinedArg(nullptr, MArch, "armv7k");
2272 else if (Name == "armv7m")
2273 DAL->AddJoinedArg(nullptr, MArch, "armv7m");
2274 else if (Name == "armv7s")
2275 DAL->AddJoinedArg(nullptr, MArch, "armv7s");
2281 void MachO::AddLinkRuntimeLibArgs(const ArgList &Args,
2282 ArgStringList &CmdArgs,
2283 bool ForceLinkBuiltinRT) const {
2284 // Embedded targets are simple at the moment, not supporting sanitizers and
2285 // with different libraries for each member of the product { static, PIC } x
2286 // { hard-float, soft-float }
2287 llvm::SmallString<32> CompilerRT = StringRef("");
2289 (tools::arm::getARMFloatABI(*this, Args) == tools::arm::FloatABI::Hard)
2292 CompilerRT += Args.hasArg(options::OPT_fPIC) ? "_pic" : "_static";
2294 AddLinkRuntimeLib(Args, CmdArgs, CompilerRT, RLO_IsEmbedded);
2297 bool Darwin::isAlignedAllocationUnavailable() const {
2298 llvm::Triple::OSType OS;
2300 switch (TargetPlatform) {
2301 case MacOS: // Earlier than 10.13.
2302 OS = llvm::Triple::MacOSX;
2305 OS = llvm::Triple::IOS;
2307 case TvOS: // Earlier than 11.0.
2308 OS = llvm::Triple::TvOS;
2310 case WatchOS: // Earlier than 4.0.
2311 OS = llvm::Triple::WatchOS;
2315 return TargetVersion < alignedAllocMinVersion(OS);
2318 void Darwin::addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
2319 llvm::opt::ArgStringList &CC1Args,
2320 Action::OffloadKind DeviceOffloadKind) const {
2321 // Pass "-faligned-alloc-unavailable" only when the user hasn't manually
2322 // enabled or disabled aligned allocations.
2323 if (!DriverArgs.hasArgNoClaim(options::OPT_faligned_allocation,
2324 options::OPT_fno_aligned_allocation) &&
2325 isAlignedAllocationUnavailable())
2326 CC1Args.push_back("-faligned-alloc-unavailable");
2329 /// Pass the SDK version to the compiler when the SDK information is
2332 llvm::raw_string_ostream OS(Arg);
2333 OS << "-target-sdk-version=" << SDKInfo->getVersion();
2334 CC1Args.push_back(DriverArgs.MakeArgString(OS.str()));
2339 Darwin::TranslateArgs(const DerivedArgList &Args, StringRef BoundArch,
2340 Action::OffloadKind DeviceOffloadKind) const {
2341 // First get the generic Apple args, before moving onto Darwin-specific ones.
2342 DerivedArgList *DAL =
2343 MachO::TranslateArgs(Args, BoundArch, DeviceOffloadKind);
2344 const OptTable &Opts = getDriver().getOpts();
2346 // If no architecture is bound, none of the translations here are relevant.
2347 if (BoundArch.empty())
2350 // Add an explicit version min argument for the deployment target. We do this
2351 // after argument translation because -Xarch_ arguments may add a version min
2353 AddDeploymentTarget(*DAL);
2355 // For iOS 6, undo the translation to add -static for -mkernel/-fapple-kext.
2356 // FIXME: It would be far better to avoid inserting those -static arguments,
2357 // but we can't check the deployment target in the translation code until
2359 if (isTargetWatchOSBased() ||
2360 (isTargetIOSBased() && !isIPhoneOSVersionLT(6, 0))) {
2361 for (ArgList::iterator it = DAL->begin(), ie = DAL->end(); it != ie; ) {
2364 if (A->getOption().getID() != options::OPT_mkernel &&
2365 A->getOption().getID() != options::OPT_fapple_kext)
2367 assert(it != ie && "unexpected argument translation");
2369 assert(A->getOption().getID() == options::OPT_static &&
2370 "missing expected -static argument");
2376 if (!Args.getLastArg(options::OPT_stdlib_EQ) &&
2377 GetCXXStdlibType(Args) == ToolChain::CST_Libcxx)
2378 DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_stdlib_EQ),
2381 // Validate the C++ standard library choice.
2382 CXXStdlibType Type = GetCXXStdlibType(*DAL);
2383 if (Type == ToolChain::CST_Libcxx) {
2384 // Check whether the target provides libc++.
2387 // Complain about targeting iOS < 5.0 in any way.
2388 if (isTargetIOSBased() && isIPhoneOSVersionLT(5, 0))
2391 if (where != StringRef()) {
2392 getDriver().Diag(clang::diag::err_drv_invalid_libcxx_deployment) << where;
2396 auto Arch = tools::darwin::getArchTypeForMachOArchName(BoundArch);
2397 if ((Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb)) {
2398 if (Args.hasFlag(options::OPT_fomit_frame_pointer,
2399 options::OPT_fno_omit_frame_pointer, false))
2400 getDriver().Diag(clang::diag::warn_drv_unsupported_opt_for_target)
2401 << "-fomit-frame-pointer" << BoundArch;
2407 bool MachO::IsUnwindTablesDefault(const ArgList &Args) const {
2408 // Unwind tables are not emitted if -fno-exceptions is supplied (except when
2409 // targeting x86_64).
2410 return getArch() == llvm::Triple::x86_64 ||
2411 (GetExceptionModel(Args) != llvm::ExceptionHandling::SjLj &&
2412 Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,
2416 bool MachO::UseDwarfDebugFlags() const {
2417 if (const char *S = ::getenv("RC_DEBUG_OPTIONS"))
2418 return S[0] != '\0';
2422 llvm::ExceptionHandling Darwin::GetExceptionModel(const ArgList &Args) const {
2423 // Darwin uses SjLj exceptions on ARM.
2424 if (getTriple().getArch() != llvm::Triple::arm &&
2425 getTriple().getArch() != llvm::Triple::thumb)
2426 return llvm::ExceptionHandling::None;
2428 // Only watchOS uses the new DWARF/Compact unwinding method.
2429 llvm::Triple Triple(ComputeLLVMTriple(Args));
2430 if (Triple.isWatchABI())
2431 return llvm::ExceptionHandling::DwarfCFI;
2433 return llvm::ExceptionHandling::SjLj;
2436 bool Darwin::SupportsEmbeddedBitcode() const {
2437 assert(TargetInitialized && "Target not initialized!");
2438 if (isTargetIPhoneOS() && isIPhoneOSVersionLT(6, 0))
2443 bool MachO::isPICDefault() const { return true; }
2445 bool MachO::isPIEDefault() const { return false; }
2447 bool MachO::isPICDefaultForced() const {
2448 return (getArch() == llvm::Triple::x86_64 ||
2449 getArch() == llvm::Triple::aarch64);
2452 bool MachO::SupportsProfiling() const {
2453 // Profiling instrumentation is only supported on x86.
2454 return getArch() == llvm::Triple::x86 || getArch() == llvm::Triple::x86_64;
2457 void Darwin::addMinVersionArgs(const ArgList &Args,
2458 ArgStringList &CmdArgs) const {
2459 VersionTuple TargetVersion = getTargetVersion();
2461 if (isTargetWatchOS())
2462 CmdArgs.push_back("-watchos_version_min");
2463 else if (isTargetWatchOSSimulator())
2464 CmdArgs.push_back("-watchos_simulator_version_min");
2465 else if (isTargetTvOS())
2466 CmdArgs.push_back("-tvos_version_min");
2467 else if (isTargetTvOSSimulator())
2468 CmdArgs.push_back("-tvos_simulator_version_min");
2469 else if (isTargetIOSSimulator())
2470 CmdArgs.push_back("-ios_simulator_version_min");
2471 else if (isTargetIOSBased())
2472 CmdArgs.push_back("-iphoneos_version_min");
2474 assert(isTargetMacOS() && "unexpected target");
2475 CmdArgs.push_back("-macosx_version_min");
2478 CmdArgs.push_back(Args.MakeArgString(TargetVersion.getAsString()));
2481 void Darwin::addStartObjectFileArgs(const ArgList &Args,
2482 ArgStringList &CmdArgs) const {
2483 // Derived from startfile spec.
2484 if (Args.hasArg(options::OPT_dynamiclib)) {
2485 // Derived from darwin_dylib1 spec.
2486 if (isTargetWatchOSBased()) {
2487 ; // watchOS does not need dylib1.o.
2488 } else if (isTargetIOSSimulator()) {
2489 ; // iOS simulator does not need dylib1.o.
2490 } else if (isTargetIPhoneOS()) {
2491 if (isIPhoneOSVersionLT(3, 1))
2492 CmdArgs.push_back("-ldylib1.o");
2494 if (isMacosxVersionLT(10, 5))
2495 CmdArgs.push_back("-ldylib1.o");
2496 else if (isMacosxVersionLT(10, 6))
2497 CmdArgs.push_back("-ldylib1.10.5.o");
2500 if (Args.hasArg(options::OPT_bundle)) {
2501 if (!Args.hasArg(options::OPT_static)) {
2502 // Derived from darwin_bundle1 spec.
2503 if (isTargetWatchOSBased()) {
2504 ; // watchOS does not need bundle1.o.
2505 } else if (isTargetIOSSimulator()) {
2506 ; // iOS simulator does not need bundle1.o.
2507 } else if (isTargetIPhoneOS()) {
2508 if (isIPhoneOSVersionLT(3, 1))
2509 CmdArgs.push_back("-lbundle1.o");
2511 if (isMacosxVersionLT(10, 6))
2512 CmdArgs.push_back("-lbundle1.o");
2516 if (Args.hasArg(options::OPT_pg) && SupportsProfiling()) {
2517 if (isTargetMacOS() && isMacosxVersionLT(10, 9)) {
2518 if (Args.hasArg(options::OPT_static) ||
2519 Args.hasArg(options::OPT_object) ||
2520 Args.hasArg(options::OPT_preload)) {
2521 CmdArgs.push_back("-lgcrt0.o");
2523 CmdArgs.push_back("-lgcrt1.o");
2525 // darwin_crt2 spec is empty.
2527 // By default on OS X 10.8 and later, we don't link with a crt1.o
2528 // file and the linker knows to use _main as the entry point. But,
2529 // when compiling with -pg, we need to link with the gcrt1.o file,
2530 // so pass the -no_new_main option to tell the linker to use the
2531 // "start" symbol as the entry point.
2532 if (isTargetMacOS() && !isMacosxVersionLT(10, 8))
2533 CmdArgs.push_back("-no_new_main");
2535 getDriver().Diag(diag::err_drv_clang_unsupported_opt_pg_darwin)
2539 if (Args.hasArg(options::OPT_static) ||
2540 Args.hasArg(options::OPT_object) ||
2541 Args.hasArg(options::OPT_preload)) {
2542 CmdArgs.push_back("-lcrt0.o");
2544 // Derived from darwin_crt1 spec.
2545 if (isTargetWatchOSBased()) {
2546 ; // watchOS does not need crt1.o.
2547 } else if (isTargetIOSSimulator()) {
2548 ; // iOS simulator does not need crt1.o.
2549 } else if (isTargetIPhoneOS()) {
2550 if (getArch() == llvm::Triple::aarch64)
2551 ; // iOS does not need any crt1 files for arm64
2552 else if (isIPhoneOSVersionLT(3, 1))
2553 CmdArgs.push_back("-lcrt1.o");
2554 else if (isIPhoneOSVersionLT(6, 0))
2555 CmdArgs.push_back("-lcrt1.3.1.o");
2557 if (isMacosxVersionLT(10, 5))
2558 CmdArgs.push_back("-lcrt1.o");
2559 else if (isMacosxVersionLT(10, 6))
2560 CmdArgs.push_back("-lcrt1.10.5.o");
2561 else if (isMacosxVersionLT(10, 8))
2562 CmdArgs.push_back("-lcrt1.10.6.o");
2564 // darwin_crt2 spec is empty.
2571 if (!isTargetIPhoneOS() && Args.hasArg(options::OPT_shared_libgcc) &&
2572 !isTargetWatchOS() && isMacosxVersionLT(10, 5)) {
2573 const char *Str = Args.MakeArgString(GetFilePath("crt3.o"));
2574 CmdArgs.push_back(Str);
2578 void Darwin::CheckObjCARC() const {
2579 if (isTargetIOSBased() || isTargetWatchOSBased() ||
2580 (isTargetMacOS() && !isMacosxVersionLT(10, 6)))
2582 getDriver().Diag(diag::err_arc_unsupported_on_toolchain);
2585 SanitizerMask Darwin::getSupportedSanitizers() const {
2586 const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64;
2587 SanitizerMask Res = ToolChain::getSupportedSanitizers();
2588 Res |= SanitizerKind::Address;
2589 Res |= SanitizerKind::PointerCompare;
2590 Res |= SanitizerKind::PointerSubtract;
2591 Res |= SanitizerKind::Leak;
2592 Res |= SanitizerKind::Fuzzer;
2593 Res |= SanitizerKind::FuzzerNoLink;
2594 Res |= SanitizerKind::Function;
2596 // Prior to 10.9, macOS shipped a version of the C++ standard library without
2597 // C++11 support. The same is true of iOS prior to version 5. These OS'es are
2598 // incompatible with -fsanitize=vptr.
2599 if (!(isTargetMacOS() && isMacosxVersionLT(10, 9))
2600 && !(isTargetIPhoneOS() && isIPhoneOSVersionLT(5, 0)))
2601 Res |= SanitizerKind::Vptr;
2603 if (isTargetMacOS()) {
2605 Res |= SanitizerKind::Thread;
2606 } else if (isTargetIOSSimulator() || isTargetTvOSSimulator()) {
2608 Res |= SanitizerKind::Thread;
2613 void Darwin::printVerboseInfo(raw_ostream &OS) const {
2614 CudaInstallation.print(OS);