On 2013-04-08 06:47, Paul Eggleton wrote:
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.)

Yes, although it's named 'libc6-dbg'


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).

Ah, black magic...

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