Driver development update: initial clang changes ready

Hi All,

A quick driver update.

As per the RFC in, I have submitted a review request at which adds initial “–driver-mode=fortran” support to libclangDriver. It is intentionally fairly basic, and is intended to mirror clang’s behaviour.

Please take a look, all input is welcomed. Assumptions are starting to form about how flang’s frontend will look in the future. I hope that things will start landing soon so that the details can be hashed out in public.

As a reminder, the current intent is to introduce a new main() entrypoint called flang which calls libclangDriver in fortran mode, and implements a basic flang -fc1, which is structured similarly to clang, too.

There should be more to share on the f18 side in the near future.

All the best,

  • Peter

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