Comment # 6 on bug 1215812 from Michal Suchanek

(In reply to Richard Biener from comment #4)
> But with missing cross-binutils how could you cross-compile kernels there? 
> This can hardly be a regression then?  ISTR you are (re-)building packages
> somewhere, so I suggest you (re-)build binutils as fit.
> 
> You can also cross-compile for SLE12 from SLE15.

However, that means going into the server room and putting SLE15 boot media
into the builders.

I needed to reinstall a machine anyway so I also migrated the builders, with
this I don't really need to have cross-compilers on SLE12.

(In reply to Michal Suchanek from comment #5)
> They are not missing, they are missing the 'use for build' flag.
> 
> And of course, any historical packages remain.

Which I suppose would be the fallout of using multibuild instead of package
links. With package links the flags can be specified per package, with
multibuild they cannot.