[yocto] GDB problems

[Paul Eggleton]

On Monday 08 April 2013 06:30:02 Gary Thomas wrote:
> 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

Does installing eglibc-dbg help with this? (Assuming you don't have this 
installed already.)

> > 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.

That is debian library package renaming (debian.bbclass).

Cheers,
Paul

-- 

Paul Eggleton
Intel Open Source Technology Centre