Hello John, * John Calcote wrote on Mon, Jun 23, 2008 at 07:21:32PM CEST: > > For example, on Solaris SPARC hosts, you can target sparc-generic code, > if you wish, but it makes no sense to even see an option, > - --enable-sparc-generic on an Intel Linux box. > > Is there a way to use AC_ENABLE_ARG conditionally, based on the contents > of the $host variable, for example? Not really. The code expansion takes place at m4 time, $host is known only at configure time. > I've also thought about the possibility of adding some "solaris only" > text to the help text for the option. Not really possible either. How would you know that with ./configure --help I am not trying to find out how to pass additional options to ./configure --host=sparc-sun-solaris2.10 or similar? Of course nothing prevents you from adding '(sparc specific)' or similar to your help text. > I've also considered adding an AC_MSG_ERROR message if someone > attempts to use the option on a non-Solaris/Sparc host. Sounds like a way to go to me. Of course, in order to allow for your package to be cross-compiled, you really should look at $host (after AC_CANONICAL_HOST) and not $build. Cheers, Ralf _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
