[Buildroot] argp-standalone broken when optimization is enabled

[Thomas Petazzoni <thomas.petazzoni@free-electrons.com>]

Vicen?,

Please keep the Buildroot list in Cc, thanks!

On Thu, 14 Jan 2016 11:26:45 +0100, Vicen? wrote:
> On Thu, Jan 14, 2016 at 10:19 AM, Thomas Petazzoni
> <thomas.petazzoni@free-electrons.com> wrote:
> > Vicen?,
> >
> > Thanks for your report.
> >
> > On Wed, 13 Jan 2016 18:15:37 +0100, Vicen? wrote:
> >> Hello,
> >> could this patch be added to buildroot to fix the issue:
> >>
> >> https://dev.openwrt.org/browser/trunk/package/libs/argp-standalone/patches/002-no_optimize.patch
> >
> > Could you describe more precisely what doesn't work ? The OpenWRT
> > patch unfortunately doesn't give any details about what it is fixing.
> 
> Hello Thomas,
> In the OpenWRT page there is a link to the bug fixed by this patch:
> https://dev.openwrt.org/ticket/20460
> The configuration that fails in my case is when this buildroot options
> are enabled:
> BR2_OPTIMIZE_3
> BR2_TOOLCHAIN_EXTERNAL_GCC_5
> BR2_TOOLCHAIN_EXTERNAL_CUSTOM_MUSL
> BR2_PACKAGE_LIBV4L_UTILS
> 
> The error reported is the same as in OpenWRT.
> argp is provided with the glibc, but the standalone version is
> automatically selected when building some packages with musl.
> So, libc != glibc plus some other specific package triggers the issue.

Thanks for the details. Then I think
http://review.gluster.org/#/c/6034/ is a better solution than the one
taken by OpenWRT. Can you try this change ?

It originates from https://bugzilla.redhat.com/show_bug.cgi?id=1201898.

Thanks,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com