Re: --with-llvm on 32-bit platforms?

Thomas Munro <thomas(dot)munro(at)gmail(dot)com> writes:
> On Wed, Sep 17, 2025 at 3:47 AM Dmitry Mityugov
> <d(dot)mityugov(at)postgrespro(dot)ru> wrote:
>> I tried the patch and it works well, thanks a lot to everyone involved
>> in fixing this.

> Thanks for the report and confirmation! I also pinged Andres just in
> case he had any objections to the approach, given that he wrote this
> stuff. Nope, so pushed.

Thanks for taking care of that!

> As a side note, apt.llvm.org is apparently no longer publishing 32 bit
> packages, and Debian's own i386 packages for LLVM bits and pieces seem
> to have some inconvenient conflicts with their amd64 twins, and
> indirectly lots of other stuff including my window manager (!). Or
> perhaps it was always like that, and I'm recalling apt.llvm.org's old
> 32 bit packages. All perfectly manageable in a dedicated
> VM/container/chroot, but I wonder how long multiarch support will
> continue.

I think that for mainstream Linux distros, the handwriting on the
wall is getting clearer and clearer. Fedora stopped supporting
any 32-bit architectures some time ago, and Debian has dropped
the first shoe (i386) too. (They might still build some 32-bit
libraries, but I don't see the point of worrying about that case.
If you're on a fundamentally 64-bit system, surely Postgres is not
one of the applications you want to cram into 32-bit.)

The various BSDen and maybe some niche Linux distros are probably
the only platforms we should be worrying about for 32-bit.

Despite having been the one who started this particular round of
changes, I do foresee that PG will drop 32-bit support altogether
in not so many years. I'm willing to keep kicking that can
down the road for a little while more, though.

regards, tom lane