[OE-core] GCC 4.9 considered evil

[Khem Raj]

On Wed, Aug 13, 2014 at 2:24 PM, Gary Thomas <gary at mlbassoc.com> 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...

You need to provide more info to get any traction on this. If you can
narrow it down more that will be helpful.

>
> 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
>

thats probably unrelated to what you are seeing.

> Note: I've also tried this on qemux86 (a totally different
> architecture) and chrome bombs just as badly!
>
> --
> ------------------------------------------------------------
> Gary Thomas                 |  Consulting for the
> MLB Associates              |    Embedded world
> ------------------------------------------------------------
> --
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