compilation error

Hallo,

I am trying to install maxima on my linux gentoo box.
The following error occures in the very beginning of
compilation process:

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make[1]: Entering directory 
`/var/tmp/portage/maxima-5.9.0/work/maxima-5.9.0/src'
LISPTYPE=clisp ; export LISPTYPE ;\
CLISP=clisp ; export CLISP ;\
../lisp-utils/maxima-run-lisp -i "../lisp-utils/defsystem" \
-x '(funcall (intern "OPERATE-ON-SYSTEM" :mk) "maxima" :compile :verbose 
t)' && \
../lisp-utils/maxima-run-lisp -i "../lisp-utils/defsystem" \
-x '(funcall (intern "OPERATE-ON-SYSTEM" :mk) "maxima" :load :verbose t)' \
-f user::run -d binary-clisp/maxima
clisp -norc -q -x (progn (setq #+lisp=cl ext:*load-paths* #-lisp=cl 
lisp:*load-paths* '(#P"")) (let ((argv '())) (declare (ignorable argv)) 
(progn (load "../lisp-utils/defsystem") (funcall (intern 
"OPERATE-ON-SYSTEM" :mk) "maxima" :compile :verbose t)) (values)))
;; Loading file 
/var/tmp/portage/maxima-5.9.0/work/maxima-5.9.0/lisp-utils/defsystem.lisp 
...
;; Loaded file 
/var/tmp/portage/maxima-5.9.0/work/maxima-5.9.0/lisp-utils/defsystem.lisp
;; Loading file 
/var/tmp/portage/maxima-5.9.0/work/maxima-5.9.0/src/maxima.system ...
; - Compiling defsystem "maxima"
; - Loading module "package"
; - Loading source file "maxima-package.lisp"
*** - REGEXP:REGEXP-COMPILE: keyword arguments in (T) should occur pairwise
0 errors, 0 warnings
make[1]: *** [binary-clisp/maxima.mem] B?a;d 1
make[1]: Leaving directory 
`/var/tmp/portage/maxima-5.9.0/work/maxima-5.9.0/src'
make: *** [all-recursive] B?a;d 1
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This is probably something simple, with my minor experience with lisp
I woud probably spent lots of time digging through the code / www / etc.
So - any hint is welcome.
Tanks & Regards,
tom