Re: s390x: removal of 31-bit libraries

Hi

On 2025-12-29 13:12:48 +0100, Aurelien Jarno wrote:
> Hi,
> 
> Linux 6.19 will drop support for 31-bit compatibility on s390x, and will 
> also stop providing 31-bit support in UAPI header files [1]. Once this 
> lands in unstable, it will become impossible to build the libc6-s390 and 
> libc6-dev-s390 packages on s390x. We should therefore stop building 
> these packages, as well as g++-15-multilib and the corresponding lib32* 
> libraries.
> 
> Doing so will break many packages. I therefore suggest that, over the 
> next few weeks, we start removing 31-bit support in all packages except 
> src:gcc-15, src:gcc-defaults, src:glibc, src:linux and src:zlib (and 
> possibly the corresponding cross compilers?). Then in a final 
> coordinated step, we can fully drop 31-bit support from those remaining 
> packages as well.
> 
> Any thoughts about that? Volunteers to coordinate this? 

If I am reading dak output correctly, we are down to gcc-11, gcc-13,
gcc-14, gcc-15, zlib, and glibc itself. So assuming that I didn't miss
anything, are we there to also drop the support from these packages?

Cheers