sheredom wrote: > I think it's something much earlier in clang is not using the VFS at all when > looking up the main input path, so then it only knows the external path for > that case. My guess is that if that were fixed then the ASTWriter/Reader > would do the right thing here.
I don't think that would fix our problem though? We have: - Build machine A with a path `E:/foo/header.h` which wants to make a PCH from it. We want it to remap `E:/foo` -> `Z:/fake`. - Build machine B that *has no clue* where the original `header.h` file was on build machine A's filesystem. But we can tell it that the file is at `Z:/fake/header.h`. We can also remap that to our local version of the same file at `E:/bar/header.h`. - This lets us share PCHs to significantly speed up our builds with Unreal Build Accelerator. We need the PCH as created itself to *never* have `E:/foo` in any of the paths if we've specified this in the VFS. So we need the ASTWriter to do this remapping when it is creating the PCH. If need be I can make the ASTWriter only do this remapping if we also had `"use-external-names": false` if that would make this easier? https://github.com/llvm/llvm-project/pull/106577 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
