[U-Boot] [PATCH] arm: Handle .gnu.hash section in ldscripts

[Albert ARIBAUD]

Hi Andreas,

On Mon, 27 Jan 2014 19:46:03 +0100, Andreas Färber <afaerber at suse.de>
wrote:

> Hello,
> 
> Am 27.01.2014 15:24, schrieb Wolfgang Denk:
> > In message <1390798091-24747-1-git-send-email-afaerber at suse.de> you wrote:
> >> Avoids "could not find output section .gnu.hash" ld.bfd errors on openSUSE.
> >>
> >> Cc: Albert Aribaud <albert.u.boot at aribaud.net>
> >> Cc: Tom Rini <trini at ti.com>
> >> Signed-off-by: Andreas Färber <afaerber at suse.de>
> >> ---
> >>  More changes like this may be needed, but these I compile-tested with
> >>  v2014.01 (regression from v2013.10). colibri_t20_iris was runtime-tested.
> >>  GCC 4.8.2 r206511, binutils 2.24
> >>
> >>  arch/arm/cpu/u-boot.lds    | 1 +
> >>  board/ti/am335x/u-boot.lds | 1 +
> >>  2 files changed, 2 insertions(+)
> > 
> > Is this an ARM specific issue, or other architectures affected as
> > well?
> 
> I figured out that the section was apparently not caught by the .gnu*
> wildcard and this patch fixed our build for the following ARM configs:
> 
> am335x_evm
> arndale
> colibri_t20_iris
> cubieboard
> highbank
> hyundai_a7hd
> mele_a1000
> mx53loco
> omap3_beagle
> omap4_panda
> paz00
> rpi_b
>
> My guess was that this could be related to the arm-only commit:
> http://git.denx.de/?p=u-boot.git;a=commit;h=47ed5dd031d7d2c587e6afd386e79ccec1a1b7f7
> (which touches on a few more .lds files than mine)
> 
> But I see nothing ARM-specific in .gnu.hash sections, so other
> architectures might in theory be affected as well.
> Cf. http://sourceware.org/ml/binutils/2006-10/msg00377.html
> 
> I did read your post for ELDK pointing someone to an FAQ entry on not
> using gcc-specific flags with ld, but for one I did not spot such a
> thing in the ld command line, and for another our toolchain did not
> change and v2013.10 builds succeed whereas v2014.01 builds failed
> without the patch. I could try to git-bisect the offending change if
> necessary.

Using gcc version 4.8.1 (Ubuntu/Linaro 4.8.1-10ubuntu7), I cannot see
any issues on these boards:

am335x_evm
colibri_t20_iris
highbank
mx53loco
omap3_beagle
omap4_panda
paz00
rpi_b

On arndale, issues are due to warnings unrelated to linking.

Cubieboard, hyundai_a7hd, mele_a1000 are not in mainline AFAICT (but I'd
like to see mele_a1000 in, as this might mean mele_a1000g could
follow. :) )

Can you point me to the toolchain you are using, and if you are not
building mainline code, can you make this code available to me somehow?
 
> Best regards,
> 
> Andreas

Amicalement,
-- 
Albert.