gdb troubles

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  • January 10, 2011 at 11:21 pm #2531
    Brian
    Participant

    Has anyone had any luck using gdb with threaded programs? I get the following error:

    warning: Unable to find libthread_db matching inferior’s thread library, thread debugging will not be available.

    I tried installing libthread_db1 and glibc-dbg that didn’t solve the issue.

    January 18, 2011 at 8:09 pm #3081
    Jesse Gilles
    Blocked

    If you used opkg to install glibc-dbg and libthread-db1, try forcefully reinstalling the libc6 package.

    opkg update

    opkg –force-reinstall install libc6

    We ran into a similar issue and it was resolved by reflashing the entire rootfs or by reinstalling libc6.

    January 20, 2011 at 7:32 pm #3082
    Brian
    Participant

    When I try this, opkg says:

    # opkg update

    # opkg –force-reinstall install libc6

    Reinstalling libc6 (2.9-r37.4.6) on root…

    Collected errors:

    * ERROR: Package libc6 (parent libc6) is not available from any configured src.

    * Failed to download libc6. Perhaps you need to run ‘opkg update’?

    * Cannot find package libc6.

    #

    It seems like opkg can’t find whatever repository it needs to get it’s software. The device has internet access and can ping and resolve hostnames in the outside world.

    I think I may be missing some critical config files. Does this install method work for you? What does your /etc/opkg folder contain? Are you using any *-feed.conf files?

    Thanks.

    January 20, 2011 at 8:34 pm #3083
    Jesse Gilles
    Blocked

    Opkg isn’t configured by default to pull from any feeds because Multi-Tech doesn’t publish any feeds for public use.

    You’ll need to set up a feed on your development machine if you want to use ‘opkg update’ and ‘opkg install’ to install packages that you build. See this article for more information: http://www.multitech.net/developer/products/cellular-development-platform/development/setting-up-a-package-feed/

    How did you install gdb on the unit?

    You also have the option of reflashing the unit with your custom image (that contains gdb, glibc-dbg, etc).

    January 20, 2011 at 9:59 pm #3084
    Brian
    Participant

    I installed gdb by copying over the .ipk file and its dependencies and using opkg to install it. Then to reinstall libc6, I copied over the libc6 ipk file and reinstalled it. However, this didn’t fix the issue.

    How do I add gdb and it’s dependencies to an image? I was looking at the getting started page where it discusses custom images, but I couldn’t find how to create them.

    January 20, 2011 at 10:04 pm #3085
    Jesse Gilles
    Blocked

    It is under the Application Development section:

    http://www.multitech.net/developer/products/cellular-development-platform/development/creating-a-custom-image/

    January 20, 2011 at 10:07 pm #3086
    Jesse Gilles
    Blocked

    I also added a link to it on the Getting Started page.

    February 3, 2011 at 5:12 pm #3087
    Brian
    Participant

    Reinstalling lib6 and then installing libthread_db1, glibc-dbg, and gdb worked in that order. On one unit, gdb was already installed, and no amount of reinstalling those packages would make it work. I re-flashed the unit and installed the packages in that order and then it worked.

    Thanks.

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