i can't seem to compile my program under linux mandrake 7.0
gcc -o -L/usr/X11R6/lib -lGL -lGLU file.c
GL/gl.h : No directory or file found
GL/glu.h : No directory or file found
so how do i now if i have these file intall? if i do not have it, which *.rpm i need to intall from Mandrake linux 7.0?