fix a few glitches

configs/darwin

@@ -18,8 +18,12 @@ GLW_LIB_NAME = libGLw.dylib
 OSMESA_LIB_NAME = libOSMesa.dylib
 
 GL_LIB_DEPS = -L/usr/X11R6/lib -lX11 -lXext -lm -lpthread
-OSMESA_LIB_DEPS = $(TOP)/lib/GL.dylib
-GLU_LIB_DEPS = $(TOP)/lib/GL.dylib
-GLUT_LIB_DEPS = 
+OSMESA_LIB_DEPS = -L$(LIB_DIR) -lGL
+GLU_LIB_DEPS = -L$(LIB_DIR) -lGL
+GLUT_LIB_DEPS = -L$(LIB_DIR) -lGL -lGLU -L/usr/X11R6/lib -lX11 -lXmu -lXi -lXext
 GLW_LIB_DEPS = -L/usr/X11R6/lib -lX11 -lXt $(TOP)/lib/GL.dylib
 APP_LIB_DEPS = -L$(TOP)/lib -l$(GLUT_LIB) -l$(GLU_LIB) -l$(GL_LIB) -L/usr/X11R6/lib -lX11 -lXmu -lXt -lXi -lm
+
+# omit glw lib for now:
+SRC_DIRS = mesa glu glut/glx
+