What does it mean if two debuginfo packages create the same dwz build ID file?

Richard W.M. Jones rjones at redhat.com
Sat Sep 14 12:52:55 UTC 2013

On Sat, Sep 14, 2013 at 02:21:45PM +0200, Jan Kratochvil wrote:
> On Sat, 14 Sep 2013 14:17:28 +0200, Richard W.M. Jones wrote:
> > What I didn't understand is what these /usr/lib/debug/.dwz/* files
> > are.  Are they related to some files that we're building and how?
> It is the dwz (=debuginfo size optimizer) option -m:
> -m FILE --multifile FILE
> 	[...] create ELF object FILE and put debugging information duplicated
> 	in more than one object there, [...]

Ah OK.  On the NON-broken builds I see:

  dwz: Too few files for multifile optimization

So I guess for those it's not doing the optimization.


Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine.  Supports Linux and Windows.

More information about the devel mailing list