hello,
I try your Makefile, and it is not so good.
read at the lines 11111 and 22222 and 33333.

At 14:41 31/05/00 -0500, you wrote:
   >Does the program use any other GLUT calls?  If so, and if you delete the
   >call(s) to glutSwapBuffers(), what happens when you try to compile?  (The
   >purpose of this question is to determine whether you are actually linking
   >against the glut library; the error SOUNDS like you have somehow not
   >linked against it.) 
   >
   >I seem to need the Xmu and Xext libraries as well, in order to produce a
   >usable program (at least with Mesa 3.0 and 3.1).  Failure to link with
   >these should in no way cause the problem that you saw, however.
   >
   >You might also try a less ``fancy'', but more direct, Makefile.  If you
   >are trying to compile a pair of source files, cube.c and main.c, you might
   >write your Makefile as follows:
   >

> /~~~ Makefile
>
>IDIR   = -I/usr/X11/include
>LDIR   = -L/usr/X11R6/lib
>XLIBS  = -lX11 -lXmu -lXext
>GLBASE = -lglut -lGLU -lGL
>CC     = gcc -O2 -Wall
>COMP   = $(CC) -c
>LINK   = $(CC)
>
>all : cube
>
>cube : cube.o main.o
11111 >        $(LINK) -o cube cube.o main.o $(LDIR) $(GLBASE) $(XLIBS) -lm
>
>cube.o : cube.c
22222 >	$(COMP) $(IDIR) -o cube.o cube.c
>
>main.o : main.c
33333 >	$(COMP) $(IDIR) -o main.o main.c
>
>clean :
>        rm -f *.o cube *~
>
> \___ Makefile
>
   >(The above is derived from a Makefile that I used for a graphics course
   >last fall---it had to work on my machine (NetBSD) and the lab machines
   >(SGI boxes).  For small projects, keeping the Makefiles down to basics
   >isn't really any more work, and you get the bonus of knowing that the
   >Makefile is transportable to other systems.  Of course, if you start
   >working on larger programs (more than a few source files), you probably
   >will want to make more use of your local make's special features.)
   >
   >(Note that the indented lines are indented by _tab_ characters, not
   >spaces.  Many makes require tab characters; none refuse to accept
   >tab-indented lines.)
   >
   >
   >If you just have a cube.c, remove the main.o : main.c production, and
   >delete references to main.o in the cube : cube.o main.o production.  If
   >you are using C++ rather than C, changes the CC line to use g++ in place
   >of gcc.
   >
   >
   >Let me know if you try any of the above, and if so what results you get.
   >
   >(ramble)
   >

I use make cube.
I have an error at the lines 11111, 22222, 33333 : need an operator. 

I try to perfect my old Makefile like this :
/--------- Makefile
WARNS=2
PROG=cube
NOMAN=noman
CPPFLAGS+=-I/usr/X11R6/include
LDFLAGS+=-L/usr/X11R6/lib
LDADD+=-lX11
LDADD+=-lXmu
LDADD+=-lXext
LDADD+=-lglut
LDADD+=-lGLU
LDADD+=-lGL
LDADD+=-lm
\----------------- Makefile

this one can't find the lib GL, 
I hade -lGL to the line just over and this is good.
it seems that the line n-1 is ignore.

thank's.
regards.
R.
   >
   >  "I probably don't know what I'm talking about."  --rkr@rkr.kcnet.com
   >
   >
   >