Hi Everyone, This old wart just caught my eye on OS X 10.5: checking for egrep... /usr/bin/grep -E checking for ANSI C header files... rm: conftest.dSYM: is a directory rm: conftest.dSYM: is a directory yes checking for sys/types.h... yes ... Also see https://lists.gnu.org/archive/html/bug-autoconf/2007-11/msg00017.html. Jeff