[uclibc-ng-devel] [ork1] issue with Binutils 2.32 and gcc 9.x

Stafford Horne shorne at gmail.com
Fri Aug 23 15:47:45 CEST 2019


On Fri, Aug 16, 2019 at 07:35:33PM +0200, Romain Naour wrote:
> Hi Waldemar,
> 
> I discovered an issue with uClibc and binutils 2.32 and gcc 9.1 or 9.2.

Hi Romain,

Thank you for reporting and doing the initial investigation.  Sorry, I haven't
built uclibc-ng for a while.

Have you been able to make much progress?

> LD libuClibc-1.0.31.so
> /opt/openrisc--uclibc--bleeding-edge-1/lib/gcc/or1k-buildroot-linux-uclibc/9.2.0/../../../../or1k-buildroot-linux-uclibc/bin/ld:
> libc/libc_so.a(or1k_clone.os): pc-relative relocation against dynamic symbol
> __syscall_error
> 
> See:
> https://gitlab.com/kubu93/toolchains-builder/-/jobs/270854456
> 
> This error message come from a new check in binutils 2.32.x:
> 
> https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commitdiff;h=f2c1801f6255a3f9f483ae2f07c7d7da0ddae4af

Right, this patch added several new validations.  I am guessing the complaint is
correct and we need to fix something in uclibc-ng.

> With binutils 2.30.x and 2.31.x, I have another assembler error:
> Error: junk at end of line `l.movhi r17,gotoffha(.LC0)'
> 
> ork1 support was added to gcc 9.x and enabled into Buildroot recently.
> 
> https://git.buildroot.net/buildroot/commit/?id=da70a55a1955ff673e0110bacb3daef50f21b29e

The above error comes because we need binutils 2.32.x with the new toolchain.

> I remember doing a test with qemu_or1k_defconfig before gcc 9.1 was released but
> I don't remember if it was with musl or uClibc-ng... It should be with uClibc-ng
> but I didn't trigged such error.
> 
> Thoughts ?

It's likely the new validations added with binutils 2.32.x.  I'll try to build
uclibc-ng and see if I can reproduce.

-Stafford


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