[ODE] ode-0.6-rc2 can't find GL/gl.h

[f.l.]

hi list,

ode refuse to compile and complain it cant find GL/gl.h
and the file is there `/usr/X11R6/include/GL/gl.h'

`configure' script output as follow

...
checking for X... libraries /usr/X11R6/lib, headers
...
checking for GL/gl.h... no
checking for GL/glu.h... no
checking for GL/glext.h... no
checking for main in -lGL... no
checking for main in -lGLU... no
checking for main in -lopengl32... no
checking for main in -lglu32... no
checking for main in -lXmu... no
checking for main in -lXi... no
checking for main in -lX... no
checking for main in -lX11... no
...

perhaps a symbol link to /usr/include/GL is needed?

TIA