Hi,

Some info for you who are cross compiling for Fox G20 on Ubuntu.

In Ubuntu 11.04 (and also in Ubuntu 10) a newer version of glibc installed by the cross compiler than is used in the debian squeeze release from emdebian. This will cause cross compiled programs to segfault. Here is a thread on how to fix this problem.

http://groups.google.com/group/netusg20/browse_thread/thread/a613fd6e3550d147#

Note the the line in /etc/apt/sources.list should point at the lenny distro, not squeeze

deb www.emdebian.org/debian/ lenny main

There is also a patch for the V4.8.2-1 tarball that will fix problems with undefined when building the node, and problems with building rt_rtt

[url]files/tmp/pwrsrc_4.8.2_patch01.tar.gz[/url]

Copy wb_rtt_comppicture.sh to src/exp/com/src/os_linux/hw_arm and wb_gcg.sh to wb/exp/com/src/os_linux/hw_arm.

/Claes

Post edited by: claes, at: 2011/07/17 19:28

Hi Claes,

Thanks for these useful information. unfortunately, I'm even stuck before (I'm really beginner with pwre ...).

I tried to follow the Appendix A Embedded Linux in release note 4.8 but, when trying to add the arm project (pwre add arm482) I got the following error:

++ can't tie to /usr/local/pwrsrc/pwre_env_db! at /usr/local/pwrsrc/pwrsrc_4.8.2-1/src/tools/pwre/src/os_linux/pwre.pl line 130

Indeed I have downloaded the v4.8.2 source at /usr/local/pwrsrc/ and extracted them to /usr/loca/pwrsrc/pwrsrc_4.8.2-1/

I guess it comes from a wrong configuration of:
export pwre_env_db=/usr/loca/pwrsrc/pwrsrc/pwre_env_db

which I can understand because I don't have any pwre_env_db directory ... Is that normal or did I miss something. I searched for this directory but can't find it on my filesystem..
I have a /usr/loca/pwrsrc/pwrsrc_4.8.2-1/pwre_db instead that I try without success.

Probably a stupid error as this is my first try....

Thanks for any help

Snarf

Hi Snarf,

$pwre_env_db is a data file for pwre and contains the settings for the pwre environments. It's created when you create the first pwre environment. I use to put it in my home directory

export pwre_env_db=/home/claes/pwr_env_db

/Claes

Thanks,

...but question is: how to create the first pwre environment. Based on the build-howto.txt from Robert (section 3.2) I understood it was only required to sourcing the pwre_function and launching the pwre add function ???

But I got this error when I try to add it ....so what is the missing step ??

EDIT:
Or perhpas this error is due to another cause ??? but which one ?

Post edited by: Snarf77, at: 2011/07/19 12:20

Hi Snarf,

For the Beagle Board (Ubuntu) I succeed:

www.proview.se/index.php?option=com_joom...310&catid=3#2310

I haven't uploaded to the board yet.....

Thank you Marc,

I didn't notice this post before and I was doing the same kind of how to ...

My problem indeed was most probably a privilege problem (??) as setting the pwre_env_db to my home directory (as recommended by Claes) has solved this error....

It's now OK until next point...

Thank you all

Snarf