Re: git: 58dba5b8212f - main - devel/llvm19: prune build on 32-bit archs

On Tue, Aug 27, 2024 at 07:23:37PM +0000, Brooks Davis wrote:
> The branch main has been updated by brooks:
> 
> URL: https://cgit.FreeBSD.org/ports/commit/?id=58dba5b8212fd4dc77e07f58810ae959ae29fc6e
> 
> commit 58dba5b8212fd4dc77e07f58810ae959ae29fc6e
> Author:     Brooks Davis <brooks@FreeBSD.org>
> AuthorDate: 2024-08-27 19:23:23 +0000
> Commit:     Brooks Davis <brooks@FreeBSD.org>
> CommitDate: 2024-08-27 19:23:23 +0000
> 
>     devel/llvm19: prune build on 32-bit archs
>     
>     Given trends in compiler resource use, it is incresingly implausible to
>     consider cross-development from a 32-bit system.  As such, stop spending
>     time building LLVM bits are are vinishingly unlikely to be used on
>     32-bit systems.
>     
>     Default to BE_NATIVE (no cross build support) on 32-bit plaforms.
>     Disable BE_AMDGPU and BE_WASM as well.  BE_AMDGPU consumes enormous
>     amounts of memory.  BE_WASM is less problematic, but no one has stood up
>     to say they need it so turn it off for now.
>     
>     Completely disable MLIR and POLLY on 32-bit.  Just building MLIR fails
>     routinly on armv7 and there aren't a lot of direct users (it's used by
>     FLANG, but FLANG is 64-bit only).  Polly is pretty niche and adds quite
>     a bit of build time.

I'm looking for feedback on this change and plan to merge a version of it
back to older LLVM ports after a suitable period.  If you need something
I've disabled in your use case, let me know.

-- Brooks