>> I need to check the size of some generic types, and if the size is >> unexpected, the configure script must raise a "configuration error". > > See AC_CHECK_SIZEOF. Thank you for your response. However, AC_CHECK_SIZEOF does *not* that I need. It defines certain macros to be used later during compilation while I want the configure script just to raise an error if some types have unexpected sizes, for example, if 'int' is not of 4 bytes long. Andrew Makhorin _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf