Re: How to debug ogle?

Wed Feb 11 2004, Toralf Lund wrote:
> I'm trying to run ogle through the debugger, or possibly attach to the 
> process after starting it the usual way, in order to find out why it 
> hangs when playing one of my films... I have
> 
Earlier we added some functionallity to do this.  A normal compile
(just './configure --prefix=... && make install') should do. 
As long as you don't use install-strip ;-)

The if you, for example, want to debug the nav code start ogle as
./prefix/bin/ogle --debug-nav
This should start a new xterm with a gdb session in which the nav
process is running.  Kinda neat.

> $ file /usr/lib/ogle/ogle_nav
> /usr/lib/ogle/ogle_nav: ELF 32-bit LSB executable, Intel 80386, version 
> 1 (SYSV), for GNU/Linux 2.2.5, dynamically linked (uses shared libs), 
> not stripped
> 
> - notice the "not stripped" (yeah, I've *installed* an unstripped 
> version to debug.
Looks ok.  You shouln't have to do anything special though.

> I thought it would be easier that way as I wasn't sure 
> if the scripts would pick up the right versions when running from the 
> source dir.)
No it's not possible to run from the source dir.

> - and as far as I can tell, everything is compiled with 
> '-g', but I still get:
>
It should be, unless you overide the CFLAGS.
 
> $ gdb /usr/lib/ogle/ogle_nav
> GNU gdb Red Hat Linux (5.3post-0.20021129.18rh)
> [ ... ]
> (no debugging symbols found)...
> 
> What am I missing?
> 
Just tested on my FedoraCore1 with 
'GNU gdb Red Hat Linux (5.3.90-0.20030710.41rh)'.
That seems to work, so I'd guess that you'll have to upgade
gdb, bintools and/or gcc.

Regards
/Håkan