Date: Sat, 03 Jun 2017 17:19:39 +0000 From: mzpqnxow <musl@...qnxow.com> To: musl@...ts.openwall.com Cc: Rich Felker <dalias@...c.org> Subject: Re: Issues building gdbserver with musl Which version of gdb are you using? I've found I had to patch several versions of gdb when building gdbserver for non-x86 platforms, possibly due to less QA testing of these "obscure" platforms on the gdb dev side. I at least encountered issues with ARM and MIPS on some of the 6 and/or 7 branch of gdb. Patches were only about 20-30 lines max. I'm maintaining a collection of statically linked gdbserver executables for various embedded platforms so I'd be happy to write a patch to address the issues in gdb and send them to you and upstream if they can be fixed on the gdb side of things. I need to add those platforms anyway so it's no bother. I'll take a look today to see if I can patch any errors in gdb to get a functional build but if it's in fact a musl issue I'll have to defer. Have you had success building the same gdbserver versions with glibc or uClibc for the same architectures? Adam 1. https://github.com/mzpqnxow/embedded-toolkit/tree/master/prebuilt_static_bins/gdbserver On Sat, Jun 3, 2017 at 10:35 Khem Raj <raj.khem@...il.com> wrote: > 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 > Content of type "text/html" skipped
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