Allow resolving headers from a PCH even after headers+PCH were moved to another path.
Store in PCH the directory that the PCH was originally created in.
If a header file is not found at the path that we expect it to be and the PCH file
was moved from its original location, try to resolve the file by assuming that
header+PCH were moved together and the header is in the same place relative to the PCH.
llvm-svn: 125576
diff --git a/clang/lib/Frontend/ASTUnit.cpp b/clang/lib/Frontend/ASTUnit.cpp
index 00902e8..0370c2e 100644
--- a/clang/lib/Frontend/ASTUnit.cpp
+++ b/clang/lib/Frontend/ASTUnit.cpp
@@ -653,7 +653,7 @@
PrecompilePreambleConsumer(ASTUnit &Unit,
const Preprocessor &PP, bool Chaining,
const char *isysroot, llvm::raw_ostream *Out)
- : PCHGenerator(PP, Chaining, isysroot, Out), Unit(Unit) { }
+ : PCHGenerator(PP, "", Chaining, isysroot, Out), Unit(Unit) { }
virtual void HandleTopLevelDecl(DeclGroupRef D) {
for (DeclGroupRef::iterator it = D.begin(), ie = D.end(); it != ie; ++it) {
@@ -700,9 +700,11 @@
virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
llvm::StringRef InFile) {
std::string Sysroot;
+ std::string OutputFile;
llvm::raw_ostream *OS = 0;
bool Chaining;
- if (GeneratePCHAction::ComputeASTConsumerArguments(CI, InFile, Sysroot,
+ if (GeneratePCHAction::ComputeASTConsumerArguments(CI, InFile, Sysroot,
+ OutputFile,
OS, Chaining))
return 0;
@@ -2008,7 +2010,7 @@
std::vector<unsigned char> Buffer;
llvm::BitstreamWriter Stream(Buffer);
ASTWriter Writer(Stream);
- Writer.WriteAST(getSema(), 0, 0);
+ Writer.WriteAST(getSema(), 0, std::string(), 0);
// Write the generated bitstream to "Out".
if (!Buffer.empty())