gcc -pg with OpenGL

[Tim Prince]

Armin Primadi wrote:

> I'm trying to profile my graphic program which uses OpenGL. The program
> worked correctly when I compile it without -pg flag. However, when I
> compile it using -pg flag, it doesn't work correctly (i.e., it doesn't
> read the obj file correctly, hence, doesn't display the image).
> 
> Is there a known bug with the -pg flag with OpenGL? This is my first time
> using gprof and gcc -pg so I don't know if the bug is in my program or
> from the -pg flag.
> 
The question doesn't entirely make sense as written.  Do you have a 
problem at link time (you must use gcc -pg for both compile and link, 
and it will not help you with precompiled shared libraries), or do you 
have a problem at run time?
Do you expect people to guess details such as your OS and gcc version?
In my recent experience, -pg breaks applications which are close to 
address subspace limits.  I haven't found any solution for that.