Re: Help with codeblocks ppc64el specific FTBFS

On Wed, Mar 25, 2026 at 5:05 PM Vincent Cheng <[email protected]> wrote:
>
> Hello,
>
> I'm not subscribed to the list; please cc me on all replies.
>
> codeblocks/25.03+dfsg-2 [1] was the last version built successfully on
> ppc64el (timestamp 2025-04-30 21:52:21).
> codeblocks/25.03+dfsg-2+b1 [2] was the first build that started
> failing (binNMU with no source changes, timestamp 2026-01-16
> 14:45:49), and all subsequent builds have failed with the same linker
> error.
>
> As far as I can tell, the error appears to be the following:
>
> /usr/bin/ld: /usr/lib/gcc/powerpc64le-linux-gnu/15/libgcc.a(float128-ifunc.o):(.data+0x0):
> undefined reference to `__parse_hwcap_and_convert_at_platform'
> collect2: error: ld returned 1 exit status
>
> src:codeblocks is not failing on any other arch so this appears to be
> a ppc64el toolchain specific issue, which is outside of my area of
> expertise. Does anyone have suggestions for how to fix this? As
> another data point, it looks like the package builds fine on Ubuntu
> ppc64el, so this is somehow specific to Debian's toolchain? Thanks for
> any tips/pointers!
>
> Regards,
> Vincent
>
> [1] https://buildd.debian.org/status/fetch.php?pkg=codeblocks&arch=ppc64el&ver=25.03%2Bdfsg-2&stamp=1746049941&raw=0
> [2] https://buildd.debian.org/status/fetch.php?pkg=codeblocks&arch=ppc64el&ver=25.03%2Bdfsg-2%2Bb1&stamp=1768574749&raw=0

It looks like __parse_hwcap_and_convert_at_platform is part of Glibc
2.23 on powerpc:
<https://git.zx2c4.com/glibc/tree/sysdeps/powerpc/Versions>.

According to <https://alioth-lists.debian.net/pipermail/debian-science-maintainers/2026-February/140716.html>:

    This failure was first reported against gcc-15, but further analysis
    showed that it is not a GCC bug.

    The issue lies in the package’s build system, which does not correctly
    handle runtime library linking with newer GCC versions.

I have this in my notes, but I don't know who to give credit to.  Maybe Adrian?

    ifeq ($(DEB_HOST_ARCH),ppc64el)
    export DEB_LDFLAGS_MAINT_APPEND += -lgcc -lgcc_s -lc
    endif

Jeff