Add ImportC compiler to dmd

[Ola Fosheim Grøstad]

On Friday, 14 May 2021 at 05:27:27 UTC, Walter Bright wrote:
> It's pretty clear that ImportC is not going to be an exact 
> clone of gcc. I've been looking over the __attribute__ 
> documentation, and there doesn't even seem to be a proper 
> grammar for it.

You are better off posing as Clang than GCC.

You have to choose one or the other as extensions tend to be 
surrounded by #ifdefs

Clang is also used in a new compiler from Intel, but the more 
challenging extensions are multiprocessing-extensions. Which will 
creep in over time (meaning, next decade).