Possible problems with installing maxima

I've recently tried to compile maxima from source on a SuSE linux machine
using GNU CLISP 2.33, which I also built myself from the source.

Following the default instructions using the ./configure and make commands
works.  There are no catastrophic errors, and maxima finishes the build
with only a couple of warnings.

However, I don't understand the following session from the resulting
code.  On my Windows version the DIFF command "works".  Here it seems to
be inert.  Does anyone have a suggestion as to what might have gone wrong?

Thanks in advance.

(C1) DIFF(x^2,x);

                                    d    2
(D1)                                -- (x )
                                    dx
(C2) DIFF(x^2);
(D2)                              2 x DEL(x)
(C3) INTEGRATE(x^2,x);
                                       3
                                      x
(D3)                                  --
                                      3
(C4)


Information below

Maxima version: 5.9.0
Maxima build date: 16:47 5/24/2004
host type: i686-pc-linux-gnu
lisp-implementation-type: CLISP
lisp-implementation-version: 2.33 (2004-03-17) (built 3289829671) (memory
3294406052)