The Python configure.in file contains a line similar to this: AC_CHECK_FUNCS(acosh asinh atanh expm1 finite isinf isnan log1p) On Solaris 10 isinf is not detected because the generated conftest.c doesn't #include <math.h>. Is there a way to tell AC_CHECK_FUNCS to do that? Thanks, Skip Montanaro _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf