[Bug 2250265] s390 cross-compiler isn't suiteable for building openssl

https://bugzilla.redhat.com/show_bug.cgi?id=2250265

--- Comment #5 from Dan Horák  ---
(In reply to Dmitry Belyavskiy from comment #4)
> (In reply to Dan Horák from comment #3)
> > (In reply to Florian Weimer from comment #2)
> > > It seems you are using the cross-gcc compilers. Reassigning.
> > >
> > > My understanding is that those cross-compilers are not intended for
> > > userspace. CentOS 9 Stream has cross-compilers that work for userspace. We
> >
> > That's correct, the Fedora cross-compilers are supplied without any
> > userspace libs as their are intended for kernel or firmware development. But
> > they are built with sysroot support, so the users can provide the required
> > libs on their own.
>
> I planned to use qemu for the next tests, it should resolve the lack of the
> userspace libs, doesn't it?

I don't think so, with the sysroot you should install (eg with rpm2cpio) the
native s390x lib & headers into the /usr/s390x-linux-gnu/sys-root (see
https://src.fedoraproject.org/rpms/cross-gcc/blob/rawhide/f/cross-gcc.spec#_...),
then the compiler should pick them, but I haven't tried that personally
> > > plan to forward-port those to Fedora 40.
> >
> > Dmitry, why are trying to cross-compile openssl instead of doing a native
> > build?
>
> Cross-compilation+qemu is suitable for test automation, native build is not.
> See, e.g.
> https://github.com/openssl/openssl/blob/master/.github/workflows/cross-
> compiles.yml - I wanted to implement smth similar for my purposes.

I would think a shared or dedicated native VM would be easier for CI purposes
(available from IBM Cloud for open source projects), but probably not here ...