1 //===--- CreateInvocationFromCommandLine.cpp - CompilerInvocation from Args ==//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Construct a compiler invocation object for command line driver arguments
12 //===----------------------------------------------------------------------===//
14 #include "clang/Frontend/Utils.h"
15 #include "clang/Frontend/CompilerInstance.h"
16 #include "clang/Frontend/DiagnosticOptions.h"
17 #include "clang/Frontend/FrontendDiagnostic.h"
18 #include "clang/Driver/Compilation.h"
19 #include "clang/Driver/Driver.h"
20 #include "clang/Driver/ArgList.h"
21 #include "clang/Driver/Options.h"
22 #include "clang/Driver/Tool.h"
23 #include "llvm/Support/Host.h"
24 using namespace clang
;
26 /// createInvocationFromCommandLine - Construct a compiler invocation object for
27 /// a command line argument vector.
29 /// \return A CompilerInvocation, or 0 if none was built for the given
32 clang::createInvocationFromCommandLine(llvm::ArrayRef
<const char *> ArgList
,
33 llvm::IntrusiveRefCntPtr
<Diagnostic
> Diags
) {
34 if (!Diags
.getPtr()) {
35 // No diagnostics engine was provided, so create our own diagnostics object
36 // with the default options.
37 DiagnosticOptions DiagOpts
;
38 Diags
= CompilerInstance::createDiagnostics(DiagOpts
, ArgList
.size(),
42 llvm::SmallVector
<const char *, 16> Args
;
43 Args
.push_back("<clang>"); // FIXME: Remove dummy argument.
44 Args
.insert(Args
.end(), ArgList
.begin(), ArgList
.end());
46 // FIXME: Find a cleaner way to force the driver into restricted modes. We
47 // also want to force it to use clang.
48 Args
.push_back("-fsyntax-only");
50 // FIXME: We shouldn't have to pass in the path info.
51 driver::Driver
TheDriver("clang", llvm::sys::getHostTriple(),
52 "a.out", false, false, *Diags
);
54 // Don't check that inputs exist, they may have been remapped.
55 TheDriver
.setCheckInputsExist(false);
57 llvm::OwningPtr
<driver::Compilation
> C(TheDriver
.BuildCompilation(Args
));
59 // Just print the cc1 options if -### was present.
60 if (C
->getArgs().hasArg(driver::options::OPT__HASH_HASH_HASH
)) {
61 C
->PrintJob(llvm::errs(), C
->getJobs(), "\n", true);
65 // We expect to get back exactly one command job, if we didn't something
67 const driver::JobList
&Jobs
= C
->getJobs();
68 if (Jobs
.size() != 1 || !isa
<driver::Command
>(Jobs
.begin())) {
69 llvm::SmallString
<256> Msg
;
70 llvm::raw_svector_ostream
OS(Msg
);
71 C
->PrintJob(OS
, C
->getJobs(), "; ", true);
72 Diags
->Report(diag::err_fe_expected_compiler_job
) << OS
.str();
76 const driver::Command
*Cmd
= cast
<driver::Command
>(*Jobs
.begin());
77 if (llvm::StringRef(Cmd
->getCreator().getName()) != "clang") {
78 Diags
->Report(diag::err_fe_expected_clang_command
);
82 const driver::ArgStringList
&CCArgs
= Cmd
->getArguments();
83 CompilerInvocation
*CI
= new CompilerInvocation();
84 CompilerInvocation::CreateFromArgs(*CI
,
85 const_cast<const char **>(CCArgs
.data()),
86 const_cast<const char **>(CCArgs
.data()) +