hi actually i want to compile(ie cross compile mutt) with mb-gcc(for the microblaze processor and uclinux OS) instead of gcc. so by studying the documentation of autoconf, i started by (1) adding AC_CANONICAL_SYSTEM in configure.in (2) adding AC_TRY_RUN(mb-gcc) in configure.in (3) adding AC_CANONICAL_TARGET(microbalze-uclinux) in configure.in then did autoupdate and autoconf iam getting the following ------------------------------------------------ hemak@snowy:~/mutt-1.5.8$ autoconf configure.in:16: warning: AC_RUN_IFELSE was called before AC_GNU_SOURCE autoconf/specific.m4:348: AC_GNU_SOURCE is expanded from... configure.in:16: the top level ---------------------------------------------- configure.in is only there ,not configure.ac i just want to know if i am going in the right track, and what must i do for the above error. Thanks in advance Regards hema _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf