[Geany] Compiler Options

[Wenger-Lehrmittel at t-online.de]

I would like to use Geany to write small programms with my students.
If I compile direct in the bash i write:

gcc -I/usr/X11R6/include -L/usr/X11R6/lib -lfltk -lGL vier.cpp

How could I use this in geany?

It compiles when I set -I/usr/X11R6/include in the copile-options, but 
it dos not link with the -L/.....  and -l... -l... in the programm-options.
peter