From: Andrew Pinski via Gdb <gdb@sourceware.org>
To: Chris Packham <judge.packham@gmail.com>
Cc: GDB Mailing list <gdb@sourceware.org>
Subject: Re: GDB 17 build failure with musl
Date: Sun, 25 Jan 2026 22:55:41 -0800 [thread overview]
Message-ID: <CA+=Sn1neuh7tS-+nPq=2uDpwypdBdh38TN3GB9R7wRVECktp1Q@mail.gmail.com> (raw)
In-Reply-To: <CAFOYHZA-bwse4AOdr69Er7DUVsLuOrQ01ninMFGx5iLLDgCcfA@mail.gmail.com>
On Sun, Jan 25, 2026 at 10:30 PM Chris Packham via Gdb
<gdb@sourceware.org> wrote:
>
> Hi GDB,
>
> I've just updated crosstool-ng to include gdb 17.1 and the aarch64
> musl toolchain fails with
>
> [ERROR] /home/runner/work/crosstool-ng/crosstool-ng/.build/aarch64-unknown-linux-musl/src/gdb/gdbserver/../gdb/arch/aarch64-gcs-linux.h:35:8:
> error: redefinition of 'struct user_gcs'
> [ALL ] 35 | struct user_gcs
> [ALL ] | ^~~~~~~~
> [ALL ] In file included from
> /home/runner/work/crosstool-ng/crosstool-ng/.build/aarch64-unknown-linux-musl/src/gdb/gdbserver/linux-aarch64-low.cc:35:
> [ALL ] /home/runner/work/crosstool-ng/crosstool-ng/x-tools/aarch64-unknown-linux-musl/aarch64-unknown-linux-musl/sysroot/usr/include/asm/ptrace.h:329:8:
> note: previous definition of 'struct user_gcs'
> [ALL ] 329 | struct user_gcs {
> [ALL ] | ^~~~~~~~
>
> Does this ring any bells for anyone? Builds with gdb 16.3 are fine.
So aarch64-gcs-linux.h checks to see if GCS_MAGIC is defined to see if
user_gcs is needed to be declared.
GCS_MAGIC is defined in asm/sigcontext.h while gcs_user is defined in
asm/ptrace.h.
Maybe the issue is asm/sigcontext.h is not being included (indirectly
like it is on glibc).
Try adding
#include <asm/sigcontext.h>
After the include of asm/ptrace.h in gdbserver/linux-aarch64-low.cc .
Thanks,
Andrew Pinski
>
> Thanks,
> Chris
next prev parent reply other threads:[~2026-01-26 6:56 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-26 6:29 Chris Packham via Gdb
2026-01-26 6:55 ` Andrew Pinski via Gdb [this message]
2026-01-26 7:31 ` Chris Packham via Gdb
2026-02-03 3:10 ` Thiago Jung Bauermann via Gdb
2026-02-03 21:56 ` Chris Packham via Gdb
2026-02-04 4:11 ` Thiago Jung Bauermann via Gdb
2026-02-05 0:35 ` Chris Packham via Gdb
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