Re: Problems loading gcc-compiled Qt/OpenGL program under IRIX

[Jan Kellmer <j dot kellmer at synaps-ing dot de>]

Hello!

Markus Svensén wrote:
> 
[...]
> I've checked other Qt/OpenGL programs that work, and there the loading
> process instead continues as follows:
> 
> 2706057: 12:14:24 example: call_init: calling initialization code of
> "example" -- 0x10013568 base aout marrk 1
> 2706057: 12:14:24 example: execute_all_init_sections: finished running
> inits
> 2706057: 12:14:24 example: dlopening -------- libGL.so mode 0x1 version
> (null) l_flags 0x0 category 0x1 LIBDL_DLOPEN
> 2706057: 12:14:24 example: reference_count for /usr/lib32/libGL.so is 1
> category 1
> 2706057: 12:14:24 example: do_dlopen_dependencies ref count for  ...
> 
> I've been trying various compilation and loading flags, but this has
> only resulted in different error messages before the core dump.
> 
> Any ideas, anyone?

Yes!

I had the same problem: my application dumped core, before even entering
main. This is a problem between the GNU C++ Standard Library and the one
built by SGI. libGLU is linked against libC; this causes a core dump of
all applications linked against GLU and GNU iostreams. Searching the GCC
mailing lists I found this:
http://gcc.gnu.org/ml/gcc-bugs/2001-02/msg00535.html

AFAIR you have three options:
- use the SGI Compiler; I'm using some GNU extensions, so this was not
an option.
- avoid GLU; for obvious reasons, this wasn't an option either.
- avoid GNU iostreams; that's what I did. I used iostreams only for
debugging output, so this was the easiest way to go. 

Regards,
    Jan