[meta-freescale] u-boot fails building with gk802 (hdmi dongle) as MACHINE, hard-float issue?

[Otavio Salvador]

On Fri, Aug 30, 2013 at 10:32 AM, Christian Betz
<christian.betz at gmail.com> wrote:
> i'm starting to figure out what is going on.
>
> the short story, I think, is that all the other boards are using soft
> float and it works fine because they are using a separate and newer
> branch of uboot that fixed a build-system related bug [1].
>
> in other words: it's totally fine (desirable, actually) to build
> u-boot with -msoft-float and then boot a kernel and userspace with
> hard float. i think the issue I was running into with the imx6 dongle
> uboot has to do with something being erroneously pulled in from the
> hosts libgcc (which was compiled with hard float support) [1]. the
> build fails because it refuses to mix the soft-float u-boot binaries
> with the the hard-float stuff erroneously pulled from libgcc.
>
> i still don't know what the exact fix is because nobody mentions a
> particular commit but i am on the trail. i've done a little digging
> already but didn't get very far (USE_PRIVATE_LIBGCC doesn't appear to
> be used anywhere in any recipes so that couldn't be the fix).
>
> part of me wonders how hard it would be to port the board from the
> older uboot-imx6dongle to the official uboot-imx because this would
> probably solve the problem. more details to follow, i hope.
>
> --christian
>
> 1. http://u-boot.10912.n7.nabble.com/U-Boot-RFC-PATCH-ARMV7-Patch-to-fix-hard-float-build-issues-td22107.html

Maybe based it on a newer U-Boot version is the way to go ;-) Sending
the patches for U-Boot mailing list for merging, even better ;-)

-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750