[yocto] gcc-6.1 and raspi

[Herve Jourdain]

Hi,

I'm using kernel 4.4, and it does build properly with gcc 6.1.
But the build does fail on other packages later on, so I ended up reverting
to 5.3 for now.
I also think we should make 4.4 the default kernel version for
meta-raspberrypi, to follow the raspberrypi repository. The fixes on 4.1 are
far from what can be seen on 4.4 now (on the part that I'm involved with,
vc4 on 4.1 is not functional, while it is on 4.4 and later). And it will
only grow worse.

Herve

-----Original Message-----
From: yocto-bounces at yoctoproject.org [mailto:yocto-bounces at yoctoproject.org]
On Behalf Of Paul Barker
Sent: dimanche 5 juin 2016 13:22
To: Jonathan Liu <net147 at gmail.com>
Cc: Yocto Project <yocto at yoctoproject.org>
Subject: Re: [yocto] gcc-6.1 and raspi

On Sun, 5 Jun 2016 20:44:42 +1000
Jonathan Liu <net147 at gmail.com> wrote:

> On 5 June 2016 at 09:00, Trevor Woerner <twoerner at gmail.com> wrote:
> > Has anyone tried building a raspi image lately from master?
> >
> >         ERROR: linux-raspberrypi-1_4.1.21+gitAUTOINC+ff45bc0e89-r0
> > do_compile: Function failed: do_compile
> >
> >         | In file included
> > from 
> > /z/layerindex-master/raspi2/tmp/work-shared/raspberrypi2/kernel-sour
> > ce/include/linux/compiler.h:54:0,
> > |
> > from 
> > /z/layerindex-master/raspi2/tmp/work-shared/raspberrypi2/kernel-sour
> > ce/include/uapi/linux/stddef.h:1,
> > |
> > from 
> > /z/layerindex-master/raspi2/tmp/work-shared/raspberrypi2/kernel-sour
> > ce/include/linux/stddef.h:4,
> > |
> > from 
> > /z/layerindex-master/raspi2/tmp/work-shared/raspberrypi2/kernel-sour
> > ce/include/uapi/linux/posix_types.h:4,
> > |
> > from 
> > /z/layerindex-master/raspi2/tmp/work-shared/raspberrypi2/kernel-sour
> > ce/include/uapi/linux/types.h:13,
> > |
> > from 
> > /z/layerindex-master/raspi2/tmp/work-shared/raspberrypi2/kernel-sour
> > ce/include/linux/types.h:5,
> > |
> > from 
> > /z/layerindex-master/raspi2/tmp/work-shared/raspberrypi2/kernel-sour
> > ce/include/linux/mod_devicetable.h:11,
> > |
> > from
/z/layerindex-master/raspi2/tmp/work-shared/raspberrypi2/kernel-source/scrip
ts/mod/devicetable-offsets.c:2:
> > |
/z/layerindex-master/raspi2/tmp/work-shared/raspberrypi2/kernel-source/inclu
de/linux/compiler-gcc.h:121:30:
> > fatal error: linux/compiler-gcc6.h: No such file or directory
> 
> I can confirm this issue.
> 
> Regards,
> Jonathan

I can get a successful build with my kernel branch where I've merged the
latest 4.1.y upstream stable release into the Raspberry Pi 4.1.y branch
(https://gitlab.com/oryx/linux-oryx-rpi). I don't have the time to bisect
this right now but one commit stands out as an obvious candidate for being
the fix:

compiler-gcc: integrate the various compiler-gcc[345].h files
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/
?h=linux-4.1.y&id=f320793e52aee78f0fbb8bcaf10e6614d2e67bfc

I can also get a successful build using the recipe for the 4.4.y branch in
meta-raspberrypi. The Raspberry Pi repository has moved over to the 4.4.y
branch as the default, we should probably do the same in meta-raspberrypi.

Thanks,
Paul Barker
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