Re: [Buildroot] [PATCH] package/uclibc: enable FENV support

Hi Thomas,
Thomas Petazzoni wrote,

> Hello,
> 
> On Sun, Aug 16, 2026 at 11:24:40AM +0200, Waldemar Brodkorb wrote:
> > Enable FENV support unconditionally when a hard-float toolchain is in use.
> > Useful for packages as quickjs and chawan.
> > Adds 24kb to the C library on aarch64.
> > 
> > Signed-off-by: Waldemar Brodkorb <[email protected]>
> 
> I am not 100% sure, but this seems to have broken the build of gcc
> 14.4.0 on x86 32-bit:
> 
>   https://autobuild.buildroot.net/?reason=host-gcc-final-14.4.0&libc=uclibc
> 
> Even though we've had gcc 14.4.0 for a while, this only started
> happening on August 16, first bad commit being 9ac19958, which is
> shortly after this fenv support in uClibc was enabled.
> 
> And the build failure clearly connects to fenv:
> 
> In file included from ../../../libquadmath/math/x2y2m1q.c:19:
> ../../../libquadmath/quadmath-imp.h:310:8: error: redefinition of 'struct rm_ctx'
>   310 | struct rm_ctx
>       |        ^~~~~~
> In file included from ../../../libquadmath/quadmath-imp.h:32:
> /home/autobuild/autobuild/instance-16/output-1/host/i686-buildroot-linux-uclibc/sysroot/usr/include/fenv.h:137:8: note: originally defined here
>   137 | struct rm_ctx
>       |        ^~~~~~
> 
> Could you have a look into this?

Yes, you are right. I always had libquadmath disabled in my
toolchains while testing. Fix sent to the BR mailinglist right now.

https://lists.buildroot.org/pipermail/buildroot/2026-August/807736.html

Thomas, are there any plans to update the Bootlin toolchains?

best regards
 Waldemar
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