When you have fixed the issue (as described in the other mail) and then can reproduce your bug, please also try adding AC_PROG_CC to your configure.ac before the use of LB_LINUX_COMPILE_IFELSE and see whether your problem goes away that way. Thanks, Ralf _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf