[OE-core] GCC 4.9 considered evil

[Khem Raj]

On Wednesday, August 13, 2014, Otavio Salvador <otavio at ossystems.com.br>
wrote:

> On Wed, Aug 13, 2014 at 6:24 PM, Gary Thomas <gary at mlbassoc.com
> <javascript:;>> wrote:
> > I've found that the latest GCC doesn't work very well, at
> > least not on ARM (and obviously other architectures as well [1])
> > When I build Google Chromium browser for my i.MX boards using
> > GCC-4.9.x, no pages can be rendered - massive bloodshed and
> > failures are shown on the console.  If I use the older GCC 4.8.2,
> > everything else the same, all is well.
> >
> > Here's my configuration:
> > BB_VERSION        = "1.23.1"
> > BUILD_SYS         = "x86_64-linux"
> > NATIVELSBSTRING   = "Ubuntu-13.10"
> > TARGET_SYS        = "arm-amltd-linux-gnueabi"
> > MACHINE           = "teton-p0382"
> > DISTRO            = "amltd"
> > DISTRO_VERSION    = "1.6+snapshot-20140812"
> > TUNE_FEATURES     = "arm armv7a vfp neon callconvention-hard cortexa9"
> > TARGET_FPU        = "vfp-neon"
> > meta              = "master:86afd7eb7c679eb065706137f28f44248f3fbc5a"
> > meta-amltd        = "master:899529b4184dc9e3e291e7fcdbbf157233db056d"
> > meta-teton-imx6-p0382 = "master:9188e2f8fafd203c95dcd7a3c79cb38a1568e9b5"
> > meta-fsl-arm      = "master:b0cf5c78c5f98c5977ae556d331e7495648f154c"
> > meta-fsl-arm-extra = "master:12e560967b7136222c325d11633295fe3a0c701c"
> > meta-browser      = "master:da93c8e386133a15eff1414d9307c8f2c7a44787"
> >
> > Should this be filed as a bug?  I don't have much data other than it
> > simply breaks (and chrome is not the easiest thing to debug!).  Other
> > applications seem OK, but I am loathe to trust it...
> >
> > I'm going to hold onto GCC-4.8.x for my $DISTRO at least (and I hope
> > it doesn't vanish like 4.7.x did too quickly).
> >
> > [1]
> >
> http://slashdot.org/story/14/07/27/1838219/linus-torvalds-gcc-490-seems-to-be-terminally-broken
> >
> > Note: I've also tried this on qemux86 (a totally different
> > architecture) and chrome bombs just as badly!
>
> I confirm that GCC 4.9 does NOT work for Chromium 35. At this moment I
> am not aware of any fix for it.


Again Its a broad brush statement. Something concrete is needed if
some.action is to taken

>
> IIRC the Chromium 37 works though.
>
>
Well then its less chance.that someone will fix 35

> --
> 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
> --
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