Re: linux-yocto and gcc 5.x

[Richard Purdie <richard.purdie@linuxfoundation.org>]

On Mon, 2015-05-11 at 09:51 -0400, Bruce Ashfield wrote:
> On 2015-05-11 09:20 AM, Richard Purdie wrote:
> > Hi Bruce,
> >
> > One of the things we're looking at in 1.9 is gcc 5.x support by default.
> > One of the areas this has significant impact is on the kernels,
> > linux-yocto in particular. I'm starting to see a potential problem here
> > since the kernels don't appear to work well with gcc 5.x:
> >
> > http://errors.yoctoproject.org/Errors/Search/?items=10&query=1426e31f0bcd19f066931d2ecbdec3752b14e88e&limit=150&order_by=RECIPE
> >
> > (this is a test build I ran just to see how bad things were).
> >
> > Are we going to be in a position to get 5.x support backported into 3.14
> > (and maybe 3.10)? Or was we going to have to wait for later versions?
> 
> I should be able to bring gcc5 support back to the previous LTSI
> kernel (3.14), but need to poke at the breakage myself to know
> for sure.

Sorry, I was confused with versions, I of course mean 3.17 and 3.14
above, we dropped 3.10! I think 3.17 is ok so its 3.14 that we're having
the problems with by the looks of it.

> What's the incantation to configure gcc5 into a test build ?

http://git.yoctoproject.org/cgit.cgi/poky/commit/?h=master-next&id=d72ca3dca225a4801e595c95e98aacbe738d8303

or just set

GCCVERSION = "5.1%"

Cheers,

Richard