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Date: Sat, 3 Jun 2017 07:34:14 -0700
From: Khem Raj <raj.khem@...il.com>
To: musl@...ts.openwall.com
Cc: Rich Felker <dalias@...c.org>
Subject: Re: Issues building gdbserver with musl

Hi Thomas



On Sat, Jun 3, 2017 at 7:14 AM, Thomas Petazzoni
<thomas.petazzoni@...e-electrons.com> wrote:
> Hello,
>
> We are building a number of toolchains, some of them using the musl C
> library, and are seeing that gdbserver fails to build with musl on a
> number of architectures. We have used musl 1.1.16, i.e the latest
> version.
>
> Here are the failures that we see:
>
>  - On SuperH:
>
>    usr/sh4-buildroot-linux-musl/sysroot/usr/include/asm/ptrace_32.h:44:8: error: redefinition of 'struct pt_regs'
>
>  - On PowerPC64 and PowerPC64le:
>
>    usr/powerpc64-buildroot-linux-musl/sysroot/usr/include/asm/ptrace.h:31:8: error: redefinition of 'struct pt_regs'
>    usr/powerpc64le-buildroot-linux-musl/sysroot/usr/include/asm/ptrace.h:31:8: error: redefinition of 'struct pt_regs'
>
>  - On PowerPC:
>
>    usr/powerpc-buildroot-linux-musl/sysroot/usr/include/asm/ptrace.h:31:8: error: redefinition of 'struct pt_regs'


for ppe issues you can use something like
http://git.yoctoproject.org/clean/cgit.cgi/poky/tree/meta/recipes-devtools/gdb/gdb/0004-ppc-ptrace-Define-pt_regs-uapi_pt_regs-on-GLIBC-syst.patch

>
>  - On Microblaze, little endian and big endian
>
>    usr/microblaze-buildroot-linux-musl/sysroot/usr/include/sys/procfs.h:30:2: error: unknown type name 'elf_gregset_t'
>    error: 'Elf64_auxv_t' undeclared (first use in this function)
>    error: 'Elf32_auxv_t' undeclared (first use in this function)
>    ...
>
> On all those architectures, gdbserver builds fine with other C libraries.
>
> I had a brief look at the commits in musl since 1.1.16 and couldn't
> spot anything that looked related.
>
> Are you interested in fixing those issues? If needed, I can provide an
> easy way of reproducing those build failures.
>
> Thanks!
>
> Thomas
> --
> Thomas Petazzoni, CTO, Free Electrons
> Embedded Linux and Kernel engineering
> http://free-electrons.com

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