[PATCH] Out-of-tree build for libmd

[Guillem Jover]

Hi!

On Fri, 2023-10-27 at 21:55:25 +0200, Gregor Jasny wrote:
> while working on a Conan recipe for libmd I noticed that libmd has problems
> building when the build directory is not equal to the source directory:
> 
> >   GEN      rmd160hl.c
> > /bin/sed: can't read helper.c: No such file or directory
> 
> The attached patch fixes the problem for me.

Thanks! Merged and pushed. Also added a CI test to catch any
regression.

I'll try to prepare a libmd release during the weekend, alongside the
pending one for libbsd, where I'll also fix the out-of-tree support.

Thanks,
Guillem