Not finding modules that opam appears to have installed.

I uninstalled and then installed glMlite using opam, just to be sure I 
knew what was there.  I subsequently trid once again to ocmpile my 
trivial game.

hendrik@notlookedfor:~/dv/ocaml/wander$ make wander
ocamlfind ocamlopt -package glMLite -package unix -linkpkg 
loader-libpng.c png_loader.ml wander.ml -o wander
File "wander.ml", line 1:
Error: No implementations provided for the following modules:
         Glut referenced from wander.cmx
Makefile:6: recipe for target 'wander' failed
make: *** [wander] Error 2
hendrik@notlookedfor: ~/dv/ocaml/wander$

Evidently it is not finding Glut.

What could it be looking for by the nae of Glut that it doesn't find 
it in the glMlite that opam installed?  To my eyes, it's right there 
where opam installed it:

 
hendrik@notlookedfor:~/dv/ocaml/wander$ ls /home/hendrik/.opam/4.02.3/lib/glMLite/
dllFunGL.so        FunGlut.cmx   Glut.cma          libVBO.a
dllgl_stubs.so     FunGlut.cmxa  Glut.cmi          libvertArray.a
dllGlu.so          FunGlut.o     Glut.cmx          META
dllGlut.so         GL.a          Glut.cmxa         opam.config
dlljpeg_loader.so  GL.cma        Glut.o            VBO.a
dllVBO.so          GL.cmi        jpeg_loader.a     VBO.cma
dllvertArray.so    GL.cmx        jpeg_loader.cma   VBO.cmi
FunGL.a            GL.cmxa       jpeg_loader.cmi   VBO.cmx
FunGL.cma          GL.o          jpeg_loader.cmx   VBO.cmxa
FunGL.cmi          Glu.a         jpeg_loader.cmxa  VBO.o
FunGL.cmx          Glu.cma       jpeg_loader.o     vertArray.a
FunGL.cmxa         Glu.cmi       libFunGL.a        vertArray.cma
FunGL.o            Glu.cmx       libgl_stubs.a     vertArray.cmi
FunGlut.a          Glu.cmxa      libGlu.a          vertArray.cmx
FunGlut.cma        Glu.o         libGlut.a         vertArray.cmxa
FunGlut.cmi        Glut.a        libjpeg_loader.a  vertArray.o
hendrik@notlookedfor:~/dv/ocaml/wander$ 

-- hendrik