Bug#1129949: llvm-toolchain-21: FTBFS on ppc64el on Trixie

[Trupti]

Hi Adrian,

Thank you for this workaround.
I am currently testing the build with your suggested changes on ppc64el 
and
will report back the results shortly.

In the meanwhile, I will update the upstream issue thread 
(https://github.com/llvm/llvm-project/pull/184995)
and continue working with PowerPC experts on a permanent upstream fix.

Thanks again for unblocking this!

Thanks,
Trupti

On 2026-04-01 15:40, Adrian Bunk wrote:
> On Fri, Mar 13, 2026 at 06:35:28PM +0100, Fabian Grünbichler wrote:
>> 
>> note that the complete disabling of printf float support was pretty
>> much rejected, but some alternatives were suggested in the review
>> discussion in the PR.
>> ...
> 
> 1:21.1.8-7 plus the change below[1] builds for me in trixie.
> 
>> Fabian
> 
> cu
> Adrian
> 
> [1] plus removing llvm-libunwind1/libllvm22 from the build dependencies
> 
> --- llvm-toolchain-21-21.1.8/debian/rules	2026-03-18 13:45:22.000000000 
> +0000
> +++ llvm-toolchain-21-21.1.8/debian/rules	2026-03-21 13:19:08.000000000 
> +0000
> @@ -664,7 +664,7 @@
>  endif
> 
>  # Enable offloading (or not)
> -OFFLOAD_ARCHS = amd64 arm64 loong64 ppc64el riscv64
> +OFFLOAD_ARCHS = amd64 arm64 loong64 riscv64
>  OFFLOAD_ENABLE=yes
>  ifeq (,$(filter $(DEB_HOST_ARCH), $(OFFLOAD_ARCHS)))
>    OFFLOAD_ENABLE=no