debian: (jessie) gcc-4.9 build fails

[RobertCNelson]

I'm just starting to test the wheezy -> jessie transition for bb.org, gcc-4.9 is a little more picky by default:

https://gist.github.com/RobertCNelson/16d0b162bd6a24b563b9

If you guys needs a jessie armhf porter box just let me know. ;)

Regards,

[tdicola]

Oh slick, thanks for checking out the compilation on jessie and the latest GCC. Is there a script to update to the jessie branch, or would just changing the apt sources and doing a dist-upgrade work? If so I can give it a quick shot and test out fixes for the warnings and compilation error. Thanks!

[RobertCNelson]

Hi Tony,
Yeah, the really easy way would be to start with the default wheezy image, change wheezy -> jessie in /etc/apt/sources.list (ignore the debian.beagleboard.org repo, i haven't finished setting that up for jessie) then:

sudo apt-get update
sudo apt-get install gcc-4.9

Regards,

[RobertCNelson]

PS, we have a few jessie "flasher" images now out:

http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Jessie_Snapshot

Regards,

[tdicola]

Oh nice thanks! That makes it super easy--now I have no excuse to not take a look and fix. :) Will try to take a quick look later today.

[RobertCNelson]

I'm pretty sure, you can just add "-Wno-error=format-security" to you gcc call and make it work.. (but it's hidden in python layers, so i'll let you do that. ;) )

[tdicola]

Hrm having some trouble with the jessie flasher image. Flashed the eMMC (the flasher does a little knight rider style animation of the LEDs right? pretty cool!) but when it boots up I'm not getting the tunnel to 192.168.7.2. I can see the lights flashing like the OS is running, and the USB storage device for the BBB pops ups so it looks like it's running. Have you run into anything similar? (I'm using ubuntu 14.04 if it helps)

As a workaround though I'll try flashing the old image and doing the upgrade manually.

[RobertCNelson]

Give it a minute or two, as the ssh keys regenerate.. Also try: ssh debian@192.168.7.2

[RobertCNelson]

Doh! the simple dhcpd server we use wasn't installed..

sudo apt-get install udhcpd

[tdicola]

Oh gotcha, I'll try logging in with the serial port to check it out.

[RobertCNelson]

Yeap, that's all we needed:

RobertCNelson/omap-image-builder@ba53d25

ssh root@192.168.7.2 works again...

[tdicola]

Ah yep that fixed it for me, just logged in with the USB tunnel. Will check out jessie and compile the BBIO source, thanks!

[tdicola]

Just commited a quick workaround that gets it to compile. Lots of tests still fail on jessie since it still depends on the cape manager and it's not there in the later kernel right now. However this is still useful to fix so people can use the better compiler on earlier kernels for now.

It's probably worth changing the code to use fputs instead of fprintf to send a string to the file too, but without being able to test it well I'd rather just ignore the error for now.

Thanks for raising the issue and getting a jessie build! The fun part now will be getting things to work on the later kernel, but that's probably a separate issue.

[RobertCNelson]

Thanks Tony! I'll pull the new version into the default image and have it enabled.

btw, the '3.8' kernel with capemgr is available via:

sudo apt-get update
sudo apt-get install linux-image-3.8.13-bone67
sudo reboot

I'm planning on shipping v3.14 out of the box for Jessie, with the older v3.8 always available..