Problem Compiling Ver. 0.9.1

I'm having trouble compiling v.0.9.1 under slackware - I have downloaded
and installed all the dependencies from the ./configure script.  When I
try to "make" i get the following error:

make  all-recursive
make[1]: Entering directory `/home/finkj/src/libmrproject-0.9.1'
Making all in mrproject
make[2]: Entering directory
`/home/finkj/src/libmrproject-0.9.1/mrproject'
cd . && \
 --prefix=mrp_marshal mrp-marshal.list --body >> xgen-gmc \
&& cp xgen-gmc mrp-marshal.c \
&& rm -f xgen-gmc xgen-gmc~
/bin/sh: --prefix=mrp_marshal: command not found
make[2]: *** [mrp-marshal.c] Error 127
make[2]: Leaving directory
`/home/finkj/src/libmrproject-0.9.1/mrproject'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/finkj/src/libmrproject-0.9.1'
make: *** [all-recursive-am] Error 2

I'm not exactly sure what the Makefile _wants_ to do here... but perhaps
someone else has had this problem?  Thanks.

-Jon