gdb, no line numbers after gcc -g ???

Hugh Sasse hgs@dmu.ac.uk
Tue Feb 26 18:53:00 GMT 2008


On Tue, 26 Feb 2008, Brian Dessent wrote:

> Hugh Sasse wrote:
> 
> > OK, it works for a hello world, it says the symbols are loaded.
> > Therefore, as was most likely, I've munged something.  How do I
> > interrogate object files to see which is/are missing the symbol data
> > (if that's what would throw everything else off the scent)?
> 
> You can use "objdump -h file.o" and look at the sections.  If you see
> .stab and .stabstr then you have STABS debug symbols (default for -g);
> if you have .debug_{abbrev,info,line,frame,pubnames,aranges,str} then
> you have Dwarf-2 debug symbols, which you get with -gdwarf-2 and are
> generally more sophisticated and better supported by gdb.  If you see
> neither of those sets of sections, you have no debug data.

I see what's happened now.  I tried to add a --enable-extra-pe-debug which
didn't work, complaining about a -f option, so I put the whole thing in quotes.
I've thrown that option out now, and my image.o now has stabs information,
so I can proceed now.  Thank you.
> 
> Brian
> 
        Hugh

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/



More information about the Cygwin mailing list