clang  9.0.0
FreeBSD.cpp
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1 //===--- FreeBSD.cpp - FreeBSD ToolChain Implementations --------*- C++ -*-===//
2 //
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
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "FreeBSD.h"
10 #include "Arch/ARM.h"
11 #include "Arch/Mips.h"
12 #include "Arch/Sparc.h"
13 #include "CommonArgs.h"
15 #include "clang/Driver/Options.h"
17 #include "llvm/Option/ArgList.h"
18 #include "llvm/Support/VirtualFileSystem.h"
19 
20 using namespace clang::driver;
21 using namespace clang::driver::tools;
22 using namespace clang::driver::toolchains;
23 using namespace clang;
24 using namespace llvm::opt;
25 
27  const InputInfo &Output,
28  const InputInfoList &Inputs,
29  const ArgList &Args,
30  const char *LinkingOutput) const {
31  claimNoWarnArgs(Args);
32  ArgStringList CmdArgs;
33 
34  // When building 32-bit code on FreeBSD/amd64, we have to explicitly
35  // instruct as in the base system to assemble 32-bit code.
36  switch (getToolChain().getArch()) {
37  default:
38  break;
39  case llvm::Triple::x86:
40  CmdArgs.push_back("--32");
41  break;
42  case llvm::Triple::ppc:
43  CmdArgs.push_back("-a32");
44  break;
45  case llvm::Triple::mips:
46  case llvm::Triple::mipsel:
47  case llvm::Triple::mips64:
48  case llvm::Triple::mips64el: {
49  StringRef CPUName;
50  StringRef ABIName;
51  mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
52 
53  CmdArgs.push_back("-march");
54  CmdArgs.push_back(CPUName.data());
55 
56  CmdArgs.push_back("-mabi");
57  CmdArgs.push_back(mips::getGnuCompatibleMipsABIName(ABIName).data());
58 
59  if (getToolChain().getTriple().isLittleEndian())
60  CmdArgs.push_back("-EL");
61  else
62  CmdArgs.push_back("-EB");
63 
64  if (Arg *A = Args.getLastArg(options::OPT_G)) {
65  StringRef v = A->getValue();
66  CmdArgs.push_back(Args.MakeArgString("-G" + v));
67  A->claim();
68  }
69 
70  AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
71  break;
72  }
73  case llvm::Triple::arm:
74  case llvm::Triple::armeb:
75  case llvm::Triple::thumb:
76  case llvm::Triple::thumbeb: {
77  arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
78 
79  if (ABI == arm::FloatABI::Hard)
80  CmdArgs.push_back("-mfpu=vfp");
81  else
82  CmdArgs.push_back("-mfpu=softvfp");
83 
84  switch (getToolChain().getTriple().getEnvironment()) {
85  case llvm::Triple::GNUEABIHF:
86  case llvm::Triple::GNUEABI:
87  case llvm::Triple::EABI:
88  CmdArgs.push_back("-meabi=5");
89  break;
90 
91  default:
92  CmdArgs.push_back("-matpcs");
93  }
94  break;
95  }
96  case llvm::Triple::sparc:
97  case llvm::Triple::sparcel:
98  case llvm::Triple::sparcv9: {
99  std::string CPU = getCPUName(Args, getToolChain().getTriple());
100  CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
101  AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
102  break;
103  }
104  }
105 
106  Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
107 
108  CmdArgs.push_back("-o");
109  CmdArgs.push_back(Output.getFilename());
110 
111  for (const auto &II : Inputs)
112  CmdArgs.push_back(II.getFilename());
113 
114  const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
115  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
116 }
117 
119  const InputInfo &Output,
120  const InputInfoList &Inputs,
121  const ArgList &Args,
122  const char *LinkingOutput) const {
124  static_cast<const toolchains::FreeBSD &>(getToolChain());
125  const Driver &D = ToolChain.getDriver();
126  const llvm::Triple::ArchType Arch = ToolChain.getArch();
127  const bool IsPIE =
128  !Args.hasArg(options::OPT_shared) &&
129  (Args.hasArg(options::OPT_pie) || ToolChain.isPIEDefault());
130  ArgStringList CmdArgs;
131 
132  // Silence warning for "clang -g foo.o -o foo"
133  Args.ClaimAllArgs(options::OPT_g_Group);
134  // and "clang -emit-llvm foo.o -o foo"
135  Args.ClaimAllArgs(options::OPT_emit_llvm);
136  // and for "clang -w foo.o -o foo". Other warning options are already
137  // handled somewhere else.
138  Args.ClaimAllArgs(options::OPT_w);
139 
140  if (!D.SysRoot.empty())
141  CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
142 
143  if (IsPIE)
144  CmdArgs.push_back("-pie");
145 
146  CmdArgs.push_back("--eh-frame-hdr");
147  if (Args.hasArg(options::OPT_static)) {
148  CmdArgs.push_back("-Bstatic");
149  } else {
150  if (Args.hasArg(options::OPT_rdynamic))
151  CmdArgs.push_back("-export-dynamic");
152  if (Args.hasArg(options::OPT_shared)) {
153  CmdArgs.push_back("-Bshareable");
154  } else {
155  CmdArgs.push_back("-dynamic-linker");
156  CmdArgs.push_back("/libexec/ld-elf.so.1");
157  }
158  if (ToolChain.getTriple().getOSMajorVersion() >= 9) {
159  if (Arch == llvm::Triple::arm || Arch == llvm::Triple::sparc ||
160  Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64) {
161  CmdArgs.push_back("--hash-style=both");
162  }
163  }
164  CmdArgs.push_back("--enable-new-dtags");
165  }
166 
167  // Explicitly set the linker emulation for platforms that might not
168  // be the default emulation for the linker.
169  switch (Arch) {
170  case llvm::Triple::x86:
171  CmdArgs.push_back("-m");
172  CmdArgs.push_back("elf_i386_fbsd");
173  break;
174  case llvm::Triple::ppc:
175  CmdArgs.push_back("-m");
176  CmdArgs.push_back("elf32ppc_fbsd");
177  break;
178  case llvm::Triple::mips:
179  CmdArgs.push_back("-m");
180  CmdArgs.push_back("elf32btsmip_fbsd");
181  break;
182  case llvm::Triple::mipsel:
183  CmdArgs.push_back("-m");
184  CmdArgs.push_back("elf32ltsmip_fbsd");
185  break;
186  case llvm::Triple::mips64:
187  CmdArgs.push_back("-m");
188  if (tools::mips::hasMipsAbiArg(Args, "n32"))
189  CmdArgs.push_back("elf32btsmipn32_fbsd");
190  else
191  CmdArgs.push_back("elf64btsmip_fbsd");
192  break;
193  case llvm::Triple::mips64el:
194  CmdArgs.push_back("-m");
195  if (tools::mips::hasMipsAbiArg(Args, "n32"))
196  CmdArgs.push_back("elf32ltsmipn32_fbsd");
197  else
198  CmdArgs.push_back("elf64ltsmip_fbsd");
199  break;
200  default:
201  break;
202  }
203 
204  if (Arg *A = Args.getLastArg(options::OPT_G)) {
205  if (ToolChain.getTriple().isMIPS()) {
206  StringRef v = A->getValue();
207  CmdArgs.push_back(Args.MakeArgString("-G" + v));
208  A->claim();
209  }
210  }
211 
212  if (Output.isFilename()) {
213  CmdArgs.push_back("-o");
214  CmdArgs.push_back(Output.getFilename());
215  } else {
216  assert(Output.isNothing() && "Invalid output.");
217  }
218 
219  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
220  const char *crt1 = nullptr;
221  if (!Args.hasArg(options::OPT_shared)) {
222  if (Args.hasArg(options::OPT_pg))
223  crt1 = "gcrt1.o";
224  else if (IsPIE)
225  crt1 = "Scrt1.o";
226  else
227  crt1 = "crt1.o";
228  }
229  if (crt1)
230  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
231 
232  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
233 
234  const char *crtbegin = nullptr;
235  if (Args.hasArg(options::OPT_static))
236  crtbegin = "crtbeginT.o";
237  else if (Args.hasArg(options::OPT_shared) || IsPIE)
238  crtbegin = "crtbeginS.o";
239  else
240  crtbegin = "crtbegin.o";
241 
242  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin)));
243  }
244 
245  Args.AddAllArgs(CmdArgs, options::OPT_L);
246  ToolChain.AddFilePathLibArgs(Args, CmdArgs);
247  Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
248  Args.AddAllArgs(CmdArgs, options::OPT_e);
249  Args.AddAllArgs(CmdArgs, options::OPT_s);
250  Args.AddAllArgs(CmdArgs, options::OPT_t);
251  Args.AddAllArgs(CmdArgs, options::OPT_Z_Flag);
252  Args.AddAllArgs(CmdArgs, options::OPT_r);
253 
254  if (D.isUsingLTO()) {
255  assert(!Inputs.empty() && "Must have at least one input.");
256  AddGoldPlugin(ToolChain, Args, CmdArgs, Output, Inputs[0],
257  D.getLTOMode() == LTOK_Thin);
258  }
259 
260  bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
261  bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
262  AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
263 
264  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
265  addOpenMPRuntime(CmdArgs, ToolChain, Args);
266  if (D.CCCIsCXX()) {
267  if (ToolChain.ShouldLinkCXXStdlib(Args))
268  ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
269  if (Args.hasArg(options::OPT_pg))
270  CmdArgs.push_back("-lm_p");
271  else
272  CmdArgs.push_back("-lm");
273  }
274  if (NeedsSanitizerDeps)
275  linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
276  if (NeedsXRayDeps)
277  linkXRayRuntimeDeps(ToolChain, CmdArgs);
278  // FIXME: For some reason GCC passes -lgcc and -lgcc_s before adding
279  // the default system libraries. Just mimic this for now.
280  if (Args.hasArg(options::OPT_pg))
281  CmdArgs.push_back("-lgcc_p");
282  else
283  CmdArgs.push_back("-lgcc");
284  if (Args.hasArg(options::OPT_static)) {
285  CmdArgs.push_back("-lgcc_eh");
286  } else if (Args.hasArg(options::OPT_pg)) {
287  CmdArgs.push_back("-lgcc_eh_p");
288  } else {
289  CmdArgs.push_back("--as-needed");
290  CmdArgs.push_back("-lgcc_s");
291  CmdArgs.push_back("--no-as-needed");
292  }
293 
294  if (Args.hasArg(options::OPT_pthread)) {
295  if (Args.hasArg(options::OPT_pg))
296  CmdArgs.push_back("-lpthread_p");
297  else
298  CmdArgs.push_back("-lpthread");
299  }
300 
301  if (Args.hasArg(options::OPT_pg)) {
302  if (Args.hasArg(options::OPT_shared))
303  CmdArgs.push_back("-lc");
304  else
305  CmdArgs.push_back("-lc_p");
306  CmdArgs.push_back("-lgcc_p");
307  } else {
308  CmdArgs.push_back("-lc");
309  CmdArgs.push_back("-lgcc");
310  }
311 
312  if (Args.hasArg(options::OPT_static)) {
313  CmdArgs.push_back("-lgcc_eh");
314  } else if (Args.hasArg(options::OPT_pg)) {
315  CmdArgs.push_back("-lgcc_eh_p");
316  } else {
317  CmdArgs.push_back("--as-needed");
318  CmdArgs.push_back("-lgcc_s");
319  CmdArgs.push_back("--no-as-needed");
320  }
321  }
322 
323  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
324  if (Args.hasArg(options::OPT_shared) || IsPIE)
325  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtendS.o")));
326  else
327  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o")));
328  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
329  }
330 
331  ToolChain.addProfileRTLibs(Args, CmdArgs);
332 
333  const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
334  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
335 }
336 
337 /// FreeBSD - FreeBSD tool chain which can call as(1) and ld(1) directly.
338 
339 FreeBSD::FreeBSD(const Driver &D, const llvm::Triple &Triple,
340  const ArgList &Args)
341  : Generic_ELF(D, Triple, Args) {
342 
343  // When targeting 32-bit platforms, look for '/usr/lib32/crt1.o' and fall
344  // back to '/usr/lib' if it doesn't exist.
345  if ((Triple.getArch() == llvm::Triple::x86 || Triple.isMIPS32() ||
346  Triple.getArch() == llvm::Triple::ppc) &&
347  D.getVFS().exists(getDriver().SysRoot + "/usr/lib32/crt1.o"))
348  getFilePaths().push_back(getDriver().SysRoot + "/usr/lib32");
349  else
350  getFilePaths().push_back(getDriver().SysRoot + "/usr/lib");
351 }
352 
354  if (getTriple().getOSMajorVersion() >= 10)
355  return ToolChain::CST_Libcxx;
357 }
358 
360  const llvm::opt::ArgList &DriverArgs,
361  llvm::opt::ArgStringList &CC1Args) const {
362  addLibStdCXXIncludePaths(getDriver().SysRoot, "/usr/include/c++/4.2", "", "",
363  "", "", DriverArgs, CC1Args);
364 }
365 
366 void FreeBSD::AddCXXStdlibLibArgs(const ArgList &Args,
367  ArgStringList &CmdArgs) const {
369  bool Profiling = Args.hasArg(options::OPT_pg);
370 
371  switch (Type) {
373  CmdArgs.push_back(Profiling ? "-lc++_p" : "-lc++");
374  break;
375 
377  CmdArgs.push_back(Profiling ? "-lstdc++_p" : "-lstdc++");
378  break;
379  }
380 }
381 
383  return new tools::freebsd::Assembler(*this);
384 }
385 
386 Tool *FreeBSD::buildLinker() const { return new tools::freebsd::Linker(*this); }
387 
388 llvm::ExceptionHandling FreeBSD::GetExceptionModel(const ArgList &Args) const {
389  // FreeBSD uses SjLj exceptions on ARM oabi.
390  switch (getTriple().getEnvironment()) {
391  case llvm::Triple::GNUEABIHF:
392  case llvm::Triple::GNUEABI:
393  case llvm::Triple::EABI:
395  default:
396  if (getTriple().getArch() == llvm::Triple::arm ||
397  getTriple().getArch() == llvm::Triple::thumb)
398  return llvm::ExceptionHandling::SjLj;
400  }
401 }
402 
403 bool FreeBSD::HasNativeLLVMSupport() const { return true; }
404 
406 
408  const bool IsX86 = getTriple().getArch() == llvm::Triple::x86;
409  const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64;
410  const bool IsMIPS64 = getTriple().isMIPS64();
412  Res |= SanitizerKind::Address;
413  Res |= SanitizerKind::PointerCompare;
414  Res |= SanitizerKind::PointerSubtract;
415  Res |= SanitizerKind::Vptr;
416  if (IsX86_64 || IsMIPS64) {
417  Res |= SanitizerKind::Leak;
418  Res |= SanitizerKind::Thread;
419  }
420  if (IsX86 || IsX86_64) {
422  Res |= SanitizerKind::SafeStack;
423  Res |= SanitizerKind::Fuzzer;
424  Res |= SanitizerKind::FuzzerNoLink;
425  }
426  if (IsX86_64)
427  Res |= SanitizerKind::Memory;
428  return Res;
429 }
bool HasNativeLLVMSupport() const override
HasNativeLTOLinker - Check whether the linker and related tools have native LLVM support.
Definition: FreeBSD.cpp:403
bool addXRayRuntime(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
const char * getSparcAsmModeForCPU(llvm::StringRef Name, const llvm::Triple &Triple)
CXXStdlibType GetDefaultCXXStdlibType() const override
Definition: FreeBSD.cpp:353
bool isUsingLTO() const
Returns true if we are performing any kind of LTO.
Definition: Driver.h:530
The base class of the type hierarchy.
Definition: Type.h:1433
constexpr XRayInstrMask Function
Definition: XRayInstr.h:38
LTOKind getLTOMode() const
Get the specific kind of LTO being performed.
Definition: Driver.h:533
virtual void addProfileRTLibs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
addProfileRTLibs - When -fprofile-instr-profile is specified, try to pass a suitable profile runtime ...
Definition: ToolChain.cpp:710
FloatABI getARMFloatABI(const ToolChain &TC, const llvm::opt::ArgList &Args)
std::string getCPUName(const llvm::opt::ArgList &Args, const llvm::Triple &T, bool FromAs=false)
const char * getFilename() const
Definition: InputInfo.h:83
void linkSanitizerRuntimeDeps(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
void AddGoldPlugin(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const InputInfo &Output, const InputInfo &Input, bool IsThinLTO)
bool addSanitizerRuntimes(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:22
std::string GetFilePath(const char *Name) const
Definition: ToolChain.cpp:484
path_list & getFilePaths()
Definition: ToolChain.h:231
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:57
bool hasMipsAbiArg(const llvm::opt::ArgList &Args, const char *Value)
Tool * buildLinker() const override
Definition: FreeBSD.cpp:386
bool addOpenMPRuntime(llvm::opt::ArgStringList &CmdArgs, const ToolChain &TC, const llvm::opt::ArgList &Args, bool IsOffloadingHost=false, bool GompNeedsRT=false)
Returns true, if an OpenMP runtime has been added.
llvm::vfs::FileSystem & getVFS() const
Definition: Driver.h:299
void linkXRayRuntimeDeps(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
Tool * buildAssembler() const override
Definition: FreeBSD.cpp:382
void addCommand(std::unique_ptr< Command > C)
Definition: Compilation.h:205
do v
Definition: arm_acle.h:64
void AddAssemblerKPIC(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:209
void AddFilePathLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddFilePathLibArgs - Add each thing in getFilePaths() as a "-L" option.
Definition: ToolChain.cpp:858
void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const override
AddCXXStdlibLibArgs - Add the system specific linker arguments to use for the given C++ standard libr...
Definition: FreeBSD.cpp:366
const Driver & getDriver() const
Definition: ToolChain.h:193
bool CCCIsCXX() const
Whether the driver should follow g++ like behavior.
Definition: Driver.h:172
bool isPIEDefault() const override
Test whether this toolchain defaults to PIE.
Definition: FreeBSD.cpp:405
constexpr XRayInstrMask None
Definition: XRayInstr.h:37
bool ShouldLinkCXXStdlib(const llvm::opt::ArgList &Args) const
Returns if the C++ standard library should be linked in.
Definition: ToolChain.cpp:835
Dataflow Directional Tag Classes.
void AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA)
std::string SysRoot
sysroot, if present
Definition: Driver.h:147
Tool - Information on a specific compilation tool.
Definition: Tool.h:33
const SanitizerArgs & getSanitizerArgs() const
Definition: ToolChain.cpp:115
void claimNoWarnArgs(const llvm::opt::ArgList &Args)
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:45
const llvm::Triple & getTriple() const
Definition: ToolChain.h:195
llvm::ExceptionHandling GetExceptionModel(const llvm::opt::ArgList &Args) const override
GetExceptionModel - Return the tool chain exception model.
Definition: FreeBSD.cpp:388
virtual SanitizerMask getSupportedSanitizers() const
Return sanitizers which are available in this toolchain.
Definition: ToolChain.cpp:894
StringRef getGnuCompatibleMipsABIName(StringRef ABI)
Definition: Mips.cpp:143
void addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
Definition: FreeBSD.cpp:359
bool isNothing() const
Definition: InputInfo.h:74
bool isFilename() const
Definition: InputInfo.h:75
virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:763
SanitizerMask getSupportedSanitizers() const override
Return sanitizers which are available in this toolchain.
Definition: FreeBSD.cpp:407
bool addLibStdCXXIncludePaths(Twine Base, Twine Suffix, StringRef GCCTriple, StringRef GCCMultiarchTriple, StringRef TargetMultiarchTriple, Twine IncludeSuffix, const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Helper to add the variant paths of a libstdc++ installation.
Definition: Gnu.cpp:2632
void getMipsCPUAndABI(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, StringRef &CPUName, StringRef &ABIName)
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: FreeBSD.cpp:26
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:88
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: FreeBSD.cpp:118