[flang-dev] [cfe-dev] RFC: refactoring clangDriver - diagnostics classes

[Andrzej Warzynski via flang-dev]

On 25/11/2020 21:39, David Blaikie wrote:

> 
> It sounded like Richard was saying in the other thread, that if flang
> was going to share the integrated preprocessor - then the amount of
> code shared would be quite large and maybe flang depending on clang
> would be the right solution to that, if that's the direction we're
> going in.

Our goal has always been _just the driver_.

In the follow-up RFC [1], we refined our plan and tried to emphasise 
that our plan is to:
  "Make libclangDriver independent of Clang".
Richard's reply to that RFC [2]: "(...) this seems like a good direction 
to me". Hopefully Richard (CC'ed) can confirm that we didn't 
misinterpret that :)

I don't think that Flang should depend on Clang. Also, that's something 
that was explicitly requested in one of our early patches for the new 
Flang driver [4]. And indeed, we committed ourselves to removing this 
dependency on flang-dev [5]. As for cfe-dev, in both [1] and [3] we 
proposed to move any shared code (in particular, libClangDriver) out of 
Clang. So again, no dependency on Clang.

AFAIK, there are no plans to share the preprocessor and hence no 
discussion in that direction is happening. Obviously I can't speak for 
everyone on flang-dev, so I CC'ed that mailing list for better visibility.


Thank you for your feedback!

-Andrzej


[1] http://lists.llvm.org/pipermail/cfe-dev/2020-July/066393.html
[2] http://lists.llvm.org/pipermail/cfe-dev/2020-August/066488.html
[3] http://lists.llvm.org/pipermail/llvm-dev/2020-June/141994.html
[4] https://reviews.llvm.org/D79092
[5] http://lists.llvm.org/pipermail/flang-dev/2020-July/000470.html