[PATCH] D37954: Expand absolute system header paths when using -MD depfiles

[Nico Weber via Phabricator via cfe-commits]

thakis added a comment.

I think for depfile generation, we generally try to be gcc-compatible (I can link to prior changes in this spirit), so I think this seems like a good thing to do to me. gcc only does this for system headers, yes?

Does gcc support the non-negated spelling of this flag (-f-canonical-system-headers) too? If so, we should probably support that too for completeness, even if specifying it explicitly won't change behavior.


https://reviews.llvm.org/D37954