Re: GCC 14 in -current status: almost ready

[Tobias Nygren <tnn%NetBSD.org@localhost>]

On Fri, 19 Sep 2025 17:18:13 +1000
matthew green <mrg%eterna23.net@localhost> wrote:

> i don't recommend using it yet, but if you're keen, you can try builds
> with -V HAVE_GCC=14 and see what happens.

I did and found one problem not mentioned in the README.
I think is an mknative problem?
GCC on aarch64 generates references to libbid functions which do not
get linked:

../aarch64--netbsd/bin/ld: /work/src/../obj/destdir.evbarm/lib/libgcc_s.so: undefined reference to `__bid_addtd3'
../aarch64--netbsd/bin/ld: /work/src/../obj/destdir.evbarm/lib/libgcc_s.so: undefined reference to `__mulbitint3'
../aarch64--netbsd/bin/ld: /work/src/../obj/destdir.evbarm/lib/libgcc_s.so: undefined reference to `__bid_adddd3'

Example is from building GNU flex.

Digging a bit more the default of --enable-decimal-float was changed
from "no" to "yes" between GCC 12 and 13 and accepts
--enable-decimal-float={no,yes,bid,dpd}

mknative does not seem to know about libbid but we do set
-DENABLE_DECIMAL_BID_FORMAT for libgcc so I think we need to either
make some changes to mknative for libgcc or rerun mknative w/
--enable-decimal-float=no.

Kind regards,
-Tobias