Using GRRLIB 
------------  
After everything is installed, simply put
     #include &lt;grrlib.h>     <!-- #include <grrlib.h> -->
 at the top of your .c file and use the functions as required
  
You will also need to add
     -lgrrlib -ljpeg -lpngu -lpng -lz 
to the libs line in your makefile 
...Remember the order of the libraries is critical.  You may (need to) insert 
other libraries in the middle of the list, you may need to add others to the 
start, or even the end - but do _not_ change the order of the libraries shown 
here.