After inspecting VectorLinux's package list in /var/log/packages, I found that the dev team neglected to update the kernel headers, even though VectorLinux uses a 2.6.18 kernel, contrary to Slackware 11. So the headers that were being used were for kernel 2.4.33.3... Anyway, I removed the original kernel headers first, then installed unifdef, and made a header install to /tmp/usr/ and made myself a package. after that I installed it and HAL configures just fine :) I' still having other make errors related to linux_dvd_rw_utils.c, but maybe should I post those to a new topic? or can I keep on here? *kind of new to mailing lists, not sure if the procedure is the same as in forums: one thread per topic* Thanks again for all your help, Regards Eugéne