[yocto] GDB problems

[Gary Thomas]

On 2013-04-08 05:03, Gary Thomas wrote:
> I'm trying to run GDB to debug code on my target.  Whenever I start
> it up, I get this warning:
>    warning: Unable to find libthread_db matching inferior's thread library, thread debugging will not be available.
> and indeed, no thread debug commands will work.
>
> I've found that the library /usr/lib/libthread_db.so is not being
> installed in the rootfs.  However, just adding this library isn't
> enough.  The file /lib/libpthread-2.60.so has been stripped on the
> target and this also breaks GDB.  Installing a non-stripped version
> of this library lets GDB do thread debugging.
>
> Both of these libraries come from the eglibc package.  How can I
> adjust that recipe to:
>    * Install libthread_db.so
>    * Avoid stripping libpthread-2.16.so
>
> It looks like the libthread_db.so file(s) should be installed via
> the 'eglibc-thread-db' package, but I can't find this package anywhere
> on my system.

It's not clear to me why, but the files labelled as 'eglibc-thread-db' in
the eglibc recipe end up in the 'libthread-db1' package, so that mystery
is solved.

I still don't know how to get the libpthread library to be not stripped
(which it seems is what it takes to make GDB happy in this case).

-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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