robert> Currently I test for the version.sh file and if it is robert> newer than Makefile in the root of the XEmacs tree, I run robert> configure. However, this always leads to a new build with robert> recompilations of all the src/ . You need to rerun configure if (1) your configuration changes or (2) a Makefile.in.in changes or (3) src/config.h.in changes or (4) configure.in or configure changes (safest, maybe not absolutely necessary). version.sh changes at least every day on the trunk (there's a cron job to update the extra version information), and really says nothing about any dependencies in the build. -- Institute of Policy and Planning Sciences http://turnbull.sk.tsukuba.ac.jp University of Tsukuba Tennodai 1-1-1 Tsukuba 305-8573 JAPAN Ask not how you can "do" free software business; ask what your business can "do for" free software.