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Message-ID: <20261115100449.GC3542221@port70.net>
Date: Sun, 15 Nov 2026 11:04:49 +0100
From: Szabolcs Nagy <nsz@...t70.net>
To: Yegor Yefremov <yegorslists@...glemail.com>
Cc: musl@...ts.openwall.com
Subject: Re: powerpc64: libc.so fails to link with -mcpu=power10
(pc-relative code)
* Yegor Yefremov <yegorslists@...glemail.com> [2026-11-15 07:55:45 +0100]:
> Building musl 1.2.6 for powerpc64le with gcc 15.3.0 and binutils
> 2.46.1/2.47, with -mcpu=power10 or -mcpu=power11 in CFLAGS, fails
> when linking libc.so:
>
> obj/ldso/dlstart.lo: in function `_dlstart':
> dlstart.c:(.text+0x24): call to `_dlstart_c' lacks nop, can't restore toc; (toc save/adjust stub)
> ld: final link failed: bad value
https://marc.info/?l=musl&s=lacks+nop+toc+restore
gives
https://www.openwall.com/lists/musl/2026/11/05/6
> Disclosure: I used an AI assistant (Claude) to analyse this failure.
> I reproduced the failure and verified the -mno-pcrel workaround
> myself, as described above. I'm not submitting a patch.
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