Posted just a wee bit too soon... Although the "imake" version of installing libxpm looked like it finished OK, apparently it does/did not (at least on this slackware 8.1 install-everything install.)
Try using the "make -f Makefile.noX", then "make -f Makefile.noX install" method given a little farther down in the README. It worked fine this time. I would also suggest continuing to use the "--with-extra-lib=" and "--with-extra-inc=" options as well, just in case. (Imake is weird...) rl
