[For faster response, if you have a problem with a build, the report should be directed to xemacs-beta]. Stephen R Anderson <sra(a)bloch.ling.yale.edu&gt; writes to xemacs-build-reports: Can you expand a little on that? The fact that HAVE_MATHERR is defined means that configure is detecting it. Can you send in the portion of config.log where this is occurring? Grep for `checking for matherr' and snip the output from there to the next `checking for %s' message. Just how old is your environment? The last time somebody checked, I think XEmacs was buildable on Linux/a.out with proper versions of the libraries. Because it's supposed to? /dev/dsp is where the sound code outputs (successfully) to, at least on Intel/Linux.