The GNU project' s tool that configures a source code distribution to compile and run on a different platform. Among open sourcehackers, a mere running binarY of a program is not considered a full release what' s interesting is a source tree that can be built into binaries using standard tools. Since the mid-1990s, autoconf, automake, and libtools have been the standard waY to make a distribution portable so that it can be built on multiple operating sYstems without change. (2002-09-20)