ToolChains.cpp revision 1eb4433ac451dc16f4133a88af2d002ac26c58ef 
1//===--- ToolChains.cpp - ToolChain Implementations ---------------------*-===//
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 "ToolChains.h"
11
12#include "clang/Driver/Arg.h"
13#include "clang/Driver/ArgList.h"
14#include "clang/Driver/Driver.h"
15#include "clang/Driver/DriverDiagnostic.h"
16#include "clang/Driver/HostInfo.h"
17#include "clang/Driver/Option.h"
18
19#include "llvm/ADT/StringExtras.h"
20#include "llvm/Support/raw_ostream.h"
21#include "llvm/System/Path.h"
22
23#include <cstdlib> // ::getenv
24
25using namespace clang::driver;
26using namespace clang::driver::toolchains;
27
28/// Darwin - Darwin tool chain for i386 and x86_64.
29
30Darwin::Darwin(const HostInfo &Host, const llvm::Triple& Triple,
31               const unsigned (&_DarwinVersion)[3],
32               const unsigned (&_GCCVersion)[3],
33               bool _IsIPhone)
34  : ToolChain(Host, Triple) {
35  DarwinVersion[0] = _DarwinVersion[0];
36  DarwinVersion[1] = _DarwinVersion[1];
37  DarwinVersion[2] = _DarwinVersion[2];
38  GCCVersion[0] = _GCCVersion[0];
39  GCCVersion[1] = _GCCVersion[1];
40  GCCVersion[2] = _GCCVersion[2];
41  IsIPhone = _IsIPhone;
42
43  llvm::raw_string_ostream(MacosxVersionMin)
44    << "10." << DarwinVersion[0] - 4 << '.' << DarwinVersion[1];
45
46  // FIXME: Lift default up.
47  IPhoneOSVersionMin = "3.0";
48
49  ToolChainDir = "i686-apple-darwin";
50  ToolChainDir += llvm::utostr(DarwinVersion[0]);
51  ToolChainDir += "/";
52  ToolChainDir += llvm::utostr(GCCVersion[0]);
53  ToolChainDir += '.';
54  ToolChainDir += llvm::utostr(GCCVersion[1]);
55  ToolChainDir += '.';
56  ToolChainDir += llvm::utostr(GCCVersion[2]);
57
58  std::string Path;
59  if (getArchName() == "x86_64") {
60    Path = getHost().getDriver().Dir;
61    Path += "/../lib/gcc/";
62    Path += getToolChainDir();
63    Path += "/x86_64";
64    getFilePaths().push_back(Path);
65
66    Path = "/usr/lib/gcc/";
67    Path += getToolChainDir();
68    Path += "/x86_64";
69    getFilePaths().push_back(Path);
70  }
71
72  Path = getHost().getDriver().Dir;
73  Path += "/../lib/gcc/";
74  Path += getToolChainDir();
75  getFilePaths().push_back(Path);
76
77  Path = "/usr/lib/gcc/";
78  Path += getToolChainDir();
79  getFilePaths().push_back(Path);
80
81  Path = getHost().getDriver().Dir;
82  Path += "/../libexec/gcc/";
83  Path += getToolChainDir();
84  getProgramPaths().push_back(Path);
85
86  Path = "/usr/libexec/gcc/";
87  Path += getToolChainDir();
88  getProgramPaths().push_back(Path);
89
90  Path = getHost().getDriver().Dir;
91  Path += "/../libexec";
92  getProgramPaths().push_back(Path);
93
94  getProgramPaths().push_back(getHost().getDriver().Dir);
95}
96
97Darwin::~Darwin() {
98  // Free tool implementations.
99  for (llvm::DenseMap<unsigned, Tool*>::iterator
100         it = Tools.begin(), ie = Tools.end(); it != ie; ++it)
101    delete it->second;
102}
103
104Tool &Darwin::SelectTool(const Compilation &C, const JobAction &JA) const {
105  Action::ActionClass Key;
106  if (getHost().getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
107    Key = Action::AnalyzeJobClass;
108  else
109    Key = JA.getKind();
110
111  Tool *&T = Tools[Key];
112  if (!T) {
113    switch (Key) {
114    case Action::InputClass:
115    case Action::BindArchClass:
116      assert(0 && "Invalid tool kind.");
117    case Action::PreprocessJobClass:
118      T = new tools::darwin::Preprocess(*this); break;
119    case Action::AnalyzeJobClass:
120      T = new tools::Clang(*this); break;
121    case Action::PrecompileJobClass:
122    case Action::CompileJobClass:
123      T = new tools::darwin::Compile(*this); break;
124    case Action::AssembleJobClass:
125      T = new tools::darwin::Assemble(*this); break;
126    case Action::LinkJobClass:
127      T = new tools::darwin::Link(*this); break;
128    case Action::LipoJobClass:
129      T = new tools::darwin::Lipo(*this); break;
130    }
131  }
132
133  return *T;
134}
135
136DerivedArgList *Darwin::TranslateArgs(InputArgList &Args) const {
137  DerivedArgList *DAL = new DerivedArgList(Args, false);
138  const OptTable &Opts = getHost().getDriver().getOpts();
139
140  // FIXME: We really want to get out of the tool chain level argument
141  // translation business, as it makes the driver functionality much
142  // more opaque. For now, we follow gcc closely solely for the
143  // purpose of easily achieving feature parity & testability. Once we
144  // have something that works, we should reevaluate each translation
145  // and try to push it down into tool specific logic.
146
147  Arg *OSXVersion =
148    Args.getLastArg(options::OPT_mmacosx_version_min_EQ, false);
149  Arg *iPhoneVersion =
150    Args.getLastArg(options::OPT_miphoneos_version_min_EQ, false);
151  if (OSXVersion && iPhoneVersion) {
152    getHost().getDriver().Diag(clang::diag::err_drv_argument_not_allowed_with)
153          << OSXVersion->getAsString(Args)
154          << iPhoneVersion->getAsString(Args);
155  } else if (!OSXVersion && !iPhoneVersion) {
156    // Chose the default version based on the arch.
157    //
158    // FIXME: Are there iPhone overrides for this?
159
160    if (!isIPhone()) {
161      // Look for MACOSX_DEPLOYMENT_TARGET, otherwise use the version
162      // from the host.
163      const char *Version = ::getenv("MACOSX_DEPLOYMENT_TARGET");
164      if (!Version)
165        Version = MacosxVersionMin.c_str();
166      const Option *O = Opts.getOption(options::OPT_mmacosx_version_min_EQ);
167      DAL->append(DAL->MakeJoinedArg(0, O, Version));
168    } else {
169      const char *Version = IPhoneOSVersionMin.c_str();
170      const Option *O = Opts.getOption(options::OPT_miphoneos_version_min_EQ);
171      DAL->append(DAL->MakeJoinedArg(0, O, Version));
172    }
173  }
174
175  for (ArgList::iterator it = Args.begin(), ie = Args.end(); it != ie; ++it) {
176    Arg *A = *it;
177
178    if (A->getOption().matches(options::OPT_Xarch__)) {
179      // FIXME: Canonicalize name.
180      if (getArchName() != A->getValue(Args, 0))
181        continue;
182
183      // FIXME: The arg is leaked here, and we should have a nicer
184      // interface for this.
185      unsigned Prev, Index = Prev = A->getIndex() + 1;
186      Arg *XarchArg = Opts.ParseOneArg(Args, Index);
187
188      // If the argument parsing failed or more than one argument was
189      // consumed, the -Xarch_ argument's parameter tried to consume
190      // extra arguments. Emit an error and ignore.
191      //
192      // We also want to disallow any options which would alter the
193      // driver behavior; that isn't going to work in our model. We
194      // use isDriverOption() as an approximation, although things
195      // like -O4 are going to slip through.
196      if (!XarchArg || Index > Prev + 1 ||
197          XarchArg->getOption().isDriverOption()) {
198       getHost().getDriver().Diag(clang::diag::err_drv_invalid_Xarch_argument)
199          << A->getAsString(Args);
200        continue;
201      }
202
203      XarchArg->setBaseArg(A);
204      A = XarchArg;
205    }
206
207    // Sob. These is strictly gcc compatible for the time being. Apple
208    // gcc translates options twice, which means that self-expanding
209    // options add duplicates.
210    options::ID id = A->getOption().getId();
211    switch (id) {
212    default:
213      DAL->append(A);
214      break;
215
216    case options::OPT_mkernel:
217    case options::OPT_fapple_kext:
218      DAL->append(A);
219      DAL->append(DAL->MakeFlagArg(A, Opts.getOption(options::OPT_static)));
220      DAL->append(DAL->MakeFlagArg(A, Opts.getOption(options::OPT_static)));
221      break;
222
223    case options::OPT_dependency_file:
224      DAL->append(DAL->MakeSeparateArg(A, Opts.getOption(options::OPT_MF),
225                                       A->getValue(Args)));
226      break;
227
228    case options::OPT_gfull:
229      DAL->append(DAL->MakeFlagArg(A, Opts.getOption(options::OPT_g_Flag)));
230      DAL->append(DAL->MakeFlagArg(A,
231             Opts.getOption(options::OPT_fno_eliminate_unused_debug_symbols)));
232      break;
233
234    case options::OPT_gused:
235      DAL->append(DAL->MakeFlagArg(A, Opts.getOption(options::OPT_g_Flag)));
236      DAL->append(DAL->MakeFlagArg(A,
237             Opts.getOption(options::OPT_feliminate_unused_debug_symbols)));
238      break;
239
240    case options::OPT_fterminated_vtables:
241    case options::OPT_findirect_virtual_calls:
242      DAL->append(DAL->MakeFlagArg(A,
243                                   Opts.getOption(options::OPT_fapple_kext)));
244      DAL->append(DAL->MakeFlagArg(A, Opts.getOption(options::OPT_static)));
245      break;
246
247    case options::OPT_shared:
248      DAL->append(DAL->MakeFlagArg(A, Opts.getOption(options::OPT_dynamiclib)));
249      break;
250
251    case options::OPT_fconstant_cfstrings:
252      DAL->append(DAL->MakeFlagArg(A,
253                             Opts.getOption(options::OPT_mconstant_cfstrings)));
254      break;
255
256    case options::OPT_fno_constant_cfstrings:
257      DAL->append(DAL->MakeFlagArg(A,
258                          Opts.getOption(options::OPT_mno_constant_cfstrings)));
259      break;
260
261    case options::OPT_Wnonportable_cfstrings:
262      DAL->append(DAL->MakeFlagArg(A,
263                     Opts.getOption(options::OPT_mwarn_nonportable_cfstrings)));
264      break;
265
266    case options::OPT_Wno_nonportable_cfstrings:
267      DAL->append(DAL->MakeFlagArg(A,
268                  Opts.getOption(options::OPT_mno_warn_nonportable_cfstrings)));
269      break;
270
271    case options::OPT_fpascal_strings:
272      DAL->append(DAL->MakeFlagArg(A,
273                                 Opts.getOption(options::OPT_mpascal_strings)));
274      break;
275
276    case options::OPT_fno_pascal_strings:
277      DAL->append(DAL->MakeFlagArg(A,
278                              Opts.getOption(options::OPT_mno_pascal_strings)));
279      break;
280    }
281  }
282
283  // FIXME: Actually, gcc always adds this, but it is filtered for
284  // duplicates somewhere. This also changes the order of things, so
285  // look it up.
286  if (getArchName() == "x86_64")
287    if (!Args.hasArg(options::OPT_m64, false))
288      DAL->append(DAL->MakeFlagArg(0, Opts.getOption(options::OPT_m64)));
289
290  if (!Args.hasArg(options::OPT_mtune_EQ, false))
291    DAL->append(DAL->MakeJoinedArg(0, Opts.getOption(options::OPT_mtune_EQ),
292                                    "core2"));
293
294  return DAL;
295}
296
297bool Darwin::IsMathErrnoDefault() const {
298  return false;
299}
300
301bool Darwin::IsUnwindTablesDefault() const {
302  // FIXME: Gross; we should probably have some separate target
303  // definition, possibly even reusing the one in clang.
304  return getArchName() == "x86_64";
305}
306
307const char *Darwin::GetDefaultRelocationModel() const {
308  return "pic";
309}
310
311const char *Darwin::GetForcedPicModel() const {
312  if (getArchName() == "x86_64")
313    return "pic";
314  return 0;
315}
316
317/// Generic_GCC - A tool chain using the 'gcc' command to perform
318/// all subcommands; this relies on gcc translating the majority of
319/// command line options.
320
321Generic_GCC::Generic_GCC(const HostInfo &Host, const llvm::Triple& Triple)
322  : ToolChain(Host, Triple) {
323  std::string Path(getHost().getDriver().Dir);
324  Path += "/../libexec";
325  getProgramPaths().push_back(Path);
326
327  getProgramPaths().push_back(getHost().getDriver().Dir);
328}
329
330Generic_GCC::~Generic_GCC() {
331  // Free tool implementations.
332  for (llvm::DenseMap<unsigned, Tool*>::iterator
333         it = Tools.begin(), ie = Tools.end(); it != ie; ++it)
334    delete it->second;
335}
336
337Tool &Generic_GCC::SelectTool(const Compilation &C,
338                              const JobAction &JA) const {
339  Action::ActionClass Key;
340  if (getHost().getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
341    Key = Action::AnalyzeJobClass;
342  else
343    Key = JA.getKind();
344
345  Tool *&T = Tools[Key];
346  if (!T) {
347    switch (Key) {
348    case Action::InputClass:
349    case Action::BindArchClass:
350      assert(0 && "Invalid tool kind.");
351    case Action::PreprocessJobClass:
352      T = new tools::gcc::Preprocess(*this); break;
353    case Action::PrecompileJobClass:
354      T = new tools::gcc::Precompile(*this); break;
355    case Action::AnalyzeJobClass:
356      T = new tools::Clang(*this); break;
357    case Action::CompileJobClass:
358      T = new tools::gcc::Compile(*this); break;
359    case Action::AssembleJobClass:
360      T = new tools::gcc::Assemble(*this); break;
361    case Action::LinkJobClass:
362      T = new tools::gcc::Link(*this); break;
363
364      // This is a bit ungeneric, but the only platform using a driver
365      // driver is Darwin.
366    case Action::LipoJobClass:
367      T = new tools::darwin::Lipo(*this); break;
368    }
369  }
370
371  return *T;
372}
373
374bool Generic_GCC::IsMathErrnoDefault() const {
375  return true;
376}
377
378bool Generic_GCC::IsUnwindTablesDefault() const {
379  // FIXME: Gross; we should probably have some separate target
380  // definition, possibly even reusing the one in clang.
381  return getArchName() == "x86_64";
382}
383
384const char *Generic_GCC::GetDefaultRelocationModel() const {
385  return "static";
386}
387
388const char *Generic_GCC::GetForcedPicModel() const {
389  return 0;
390}
391
392DerivedArgList *Generic_GCC::TranslateArgs(InputArgList &Args) const {
393  return new DerivedArgList(Args, true);
394}
395
396/// OpenBSD - OpenBSD tool chain which can call as(1) and ld(1) directly.
397
398OpenBSD::OpenBSD(const HostInfo &Host, const llvm::Triple& Triple)
399  : Generic_GCC(Host, Triple) {
400  getFilePaths().push_back(getHost().getDriver().Dir + "/../lib");
401  getFilePaths().push_back("/usr/lib");
402}
403
404Tool &OpenBSD::SelectTool(const Compilation &C, const JobAction &JA) const {
405  Action::ActionClass Key;
406  if (getHost().getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
407    Key = Action::AnalyzeJobClass;
408  else
409    Key = JA.getKind();
410
411  Tool *&T = Tools[Key];
412  if (!T) {
413    switch (Key) {
414    case Action::AssembleJobClass:
415      T = new tools::openbsd::Assemble(*this); break;
416    case Action::LinkJobClass:
417      T = new tools::openbsd::Link(*this); break;
418    default:
419      T = &Generic_GCC::SelectTool(C, JA);
420    }
421  }
422
423  return *T;
424}
425
426/// FreeBSD - FreeBSD tool chain which can call as(1) and ld(1) directly.
427
428FreeBSD::FreeBSD(const HostInfo &Host, const llvm::Triple& Triple, bool Lib32)
429  : Generic_GCC(Host, Triple) {
430  if (Lib32) {
431    getFilePaths().push_back(getHost().getDriver().Dir + "/../lib32");
432    getFilePaths().push_back("/usr/lib32");
433  } else {
434    getFilePaths().push_back(getHost().getDriver().Dir + "/../lib");
435    getFilePaths().push_back("/usr/lib");
436  }
437}
438
439Tool &FreeBSD::SelectTool(const Compilation &C, const JobAction &JA) const {
440  Action::ActionClass Key;
441  if (getHost().getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
442    Key = Action::AnalyzeJobClass;
443  else
444    Key = JA.getKind();
445
446  Tool *&T = Tools[Key];
447  if (!T) {
448    switch (Key) {
449    case Action::AssembleJobClass:
450      T = new tools::freebsd::Assemble(*this); break;
451    case Action::LinkJobClass:
452      T = new tools::freebsd::Link(*this); break;
453    default:
454      T = &Generic_GCC::SelectTool(C, JA);
455    }
456  }
457
458  return *T;
459}
460
461/// AuroraUX - AuroraUX tool chain which can call as(1) and ld(1) directly.
462
463AuroraUX::AuroraUX(const HostInfo &Host, const llvm::Triple& Triple)
464  : Generic_GCC(Host, Triple) {
465
466  // Path mangling to find libexec
467  std::string Path(getHost().getDriver().Dir);
468
469  Path += "/../libexec";
470  getProgramPaths().push_back(Path);
471  getProgramPaths().push_back(getHost().getDriver().Dir);
472
473  getFilePaths().push_back(getHost().getDriver().Dir + "/../lib");
474  getFilePaths().push_back("/usr/lib");
475  getFilePaths().push_back("/usr/sfw/lib");
476  getFilePaths().push_back("/opt/gcc4/lib");
477
478}
479
480Tool &AuroraUX::SelectTool(const Compilation &C, const JobAction &JA) const {
481  Action::ActionClass Key;
482  if (getHost().getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
483    Key = Action::AnalyzeJobClass;
484  else
485    Key = JA.getKind();
486
487  Tool *&T = Tools[Key];
488  if (!T) {
489    switch (Key) {
490    case Action::AssembleJobClass:
491      T = new tools::auroraux::Assemble(*this); break;
492    case Action::LinkJobClass:
493      T = new tools::auroraux::Link(*this); break;
494    default:
495      T = &Generic_GCC::SelectTool(C, JA);
496    }
497  }
498
499  return *T;
500}
501
502
503/// Linux toolchain (very bare-bones at the moment).
504
505Linux::Linux(const HostInfo &Host, const llvm::Triple& Triple)
506  : Generic_GCC(Host, Triple) {
507  getFilePaths().push_back(getHost().getDriver().Dir + "/../lib/clang/1.0/");
508  getFilePaths().push_back("/lib/");
509  getFilePaths().push_back("/usr/lib/");
510
511  // Depending on the Linux distribution, any combination of lib{,32,64} is
512  // possible. E.g. Debian uses lib and lib32 for mixed i386/x86-64 systems,
513  // openSUSE uses lib and lib64 for the same purpose.
514  getFilePaths().push_back("/lib32/");
515  getFilePaths().push_back("/usr/lib32/");
516  getFilePaths().push_back("/lib64/");
517  getFilePaths().push_back("/usr/lib64/");
518
519  // FIXME: Figure out some way to get gcc's libdir
520  // (e.g. /usr/lib/gcc/i486-linux-gnu/4.3/ for Ubuntu 32-bit); we need
521  // crtbegin.o/crtend.o/etc., and want static versions of various
522  // libraries. If we had our own crtbegin.o/crtend.o/etc, we could probably
523  // get away with using shared versions in /usr/lib, though.
524  // We could fall back to the approach we used for includes (a massive
525  // list), but that's messy at best.
526}
527
528/// DragonFly - DragonFly tool chain which can call as(1) and ld(1) directly.
529
530DragonFly::DragonFly(const HostInfo &Host, const llvm::Triple& Triple)
531  : Generic_GCC(Host, Triple) {
532
533  // Path mangling to find libexec
534  std::string Path(getHost().getDriver().Dir);
535
536  Path += "/../libexec";
537  getProgramPaths().push_back(Path);
538  getProgramPaths().push_back(getHost().getDriver().Dir);
539
540  getFilePaths().push_back(getHost().getDriver().Dir + "/../lib");
541  getFilePaths().push_back("/usr/lib");
542  getFilePaths().push_back("/usr/lib/gcc41");
543}
544
545Tool &DragonFly::SelectTool(const Compilation &C, const JobAction &JA) const {
546  Action::ActionClass Key;
547  if (getHost().getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
548    Key = Action::AnalyzeJobClass;
549  else
550    Key = JA.getKind();
551
552  Tool *&T = Tools[Key];
553  if (!T) {
554    switch (Key) {
555    case Action::AssembleJobClass:
556      T = new tools::dragonfly::Assemble(*this); break;
557    case Action::LinkJobClass:
558      T = new tools::dragonfly::Link(*this); break;
559    default:
560      T = &Generic_GCC::SelectTool(C, JA);
561    }
562  }
563
564  return *T;
565}
566