[PATCH] D99353: [driver] Make `clang` warn rather then error on `flang` options

[Joachim Protze via Phabricator via cfe-commits]

protze.joachim added a comment.

In D99353#2669046 <https://reviews.llvm.org/D99353#2669046>, @awarzynski wrote:

> Btw, how important are these aliases for you?

I can work with `-ffixed-line-length=132` where needed. It's just not obvious from `flang --help` that this is an alias for `-ffixed-line-length-132` (or the other way around). I only learned that by looking at LLVM source.


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  https://reviews.llvm.org/D99353/new/

https://reviews.llvm.org/D99353