[PATCH] D121589: [C++20][Modules][Driver][HU 2/N] Add fmodule-header, fmodule-header=

[Chuanqi Xu via Phabricator via cfe-commits]

ChuanqiXu added a comment.

> It's not practical to recognise a header without any suffix so

-fmodule-header=system foo isn't going to happen.

May I ask the reason? It looks not so good with `-fmodule-header=system -xc++-header vector`


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D121589/new/

https://reviews.llvm.org/D121589