> Do you think that is feasible for GCC? I know it far too little to > be able to judge. No, sorry. In gcc, binutils, gdb, newlib, et al; there is a toplevel configure and Makefile. Configure programatically determines which of the available source directories will participate in the build, and creates a suitable Makefile. The Makefile calls the sub-configures in turn. They share config.cache, because it saves a lot of time. So, yes, configure is getting called a lot, from different modules, at different times. _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf