On 08/23/10 10:28, John Calcote wrote: > What is the correct approach for this situation? Should I simply define > __USE_UNIX98 in my source code No, because that symbol is private to glibc. I wouldn't mess with it. Instead, use Autoconf's AC_USE_SYSTEM_EXTENSIONS. _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf