--with-debug-malloc Use the debugging malloc package.
--with-clash-detection Use lock files to detect multiple edits of the same
file. The default is to do clash detection.
---lockdir=DIR The directory to put clash detection files in, such as
- `/var/lock/emacs'.
- Defaults to `${statedir}/xemacs/lock'.
You may also specify any of the `path' variables found in Makefile.in,
including --bindir, --libdir, --docdir, --lispdir, --sitelispdir,