[cfe-dev] When Parsing AST,include file not found

[Manuel Klimek]

To make this easier we have created a library called libTooling in clang:
http://clang.llvm.org/docs/LibTooling.html


On Tue, Apr 28, 2015 at 2:56 AM %绝对冰儿 <511736596 at qq.com> wrote:

> Hi:
>    I'm using clang3.6, first time I use compilerInstance+ParseAST to
> operate AST.When the sourcefile have an fatal error:'stdio.h' file not
> found. Second time I use compilerInvocation+ASTUnit to operate AST.It have
> the same problem.
> the source of compilerInvocation+ASTUnit( parse the ast of c)
>   int main(int argc, char** argv)
> {
>     shared_ptr<ASTUnit> AST;
>         clang::DiagnosticOptions diagOpts;
>         llvm::IntrusiveRefCntPtr<clang::DiagnosticsEngine> diags =
> clang::CompilerInstance::createDiagnostics(&diagOpts, 0, 0);
>         clang::LangOptions lopt;
>         vector<const char*> argvec;
>         argvec.push_back("clang");
>         argvec.push_back("-fsyntax-only");
>         argvec.push_back(argv[1]);    //it's the filename
>         ArrayRef<const char *> args(argvec);
>         CompilerInvocation *ci = new clang::CompilerInvocation();
>
> CompilerInvocation::CreateFromArgs(*ci,&argvec[0],&argvec[0]+1,*diags);
>         ci->setLangDefaults(lopt,InputKind::IK_C);
>         llvm::outs()<<"createinvocationfromcommandline"<<"\n";
>         ci->getPreprocessorOutputOpts().ShowComments = 1;
>         ci->getPreprocessorOutputOpts().ShowLineMarkers = 1;
>         llvm::outs()<<"preprocessor init "<<"\n";
>         AST = clang::ASTUnit::LoadFromCompilerInvocation(ci, diags);
>         llvm::outs()<<"createAST"<<"\n";
>         MyASTVisitor myvis;
>         myvis.TraverseDecl(AST->getASTContext().getTranslationUnitDecl());
> }
> what i miss? I don't know how to correctly create object of
> CompilerInvocation,I think it's because i don't correctly new the
> compilerinvocation.
> Thank you so much!
>
> by YingLi
> _______________________________________________
> cfe-dev mailing list
> cfe-dev at cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/cfe-dev/attachments/20150428/0901f4e9/attachment.html>