[m-rev.] for review: Initial support for cross-compiling using clang.

[Peter Wang]

On Mon, 18 Jul 2022 17:09:50 +1000 Julien Fischer <jfischer at opturion.com> wrote:
> 
> On Mon, 18 Jul 2022, Peter Wang wrote:
> 
> > [I will rename README.cross to README.cross-gcc in a separate change.]
> 
> j would be inclined to rename it to README.cross-gcc.md (and similarly
> for the clang version), so that people viewing it on github see the
> formatted version**.  (I've been meaning to do that the all of the
> README file, but just haven't got around to it yet.)
> 
> (** At least I would be so inclined were either file properly
> Markdownified.)
> 

Ok, I will convert it to markdown.

Actually, looking at it again now, the instructions are short enough
that we can just keep them both in the same document (README.cross.md).
That will save duplicating the last section.

Peter