1dnl Copyright (c) 1995, 1996, 1997, 1998 2dnl tising materials mentioning 3dnl dnl features or use of this software display the following acknowledgement: 4dnl dnl ``This product includes software developed by the University of California, 5dnl dnl Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 6dnl dnl the University nor the names of its contributors may be used to endorse 7dnl dnl or promote products derived from this software without specific prior 8dnl dnl written permission. 9dnl dnl THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 10dnl dnl WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 11dnl dnl MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 12dnl dnl 13dnl dnl LBL autoconf macros 14dnl dnl 15dnl 16dnl 17dnl Checks to see if the sockaddr struct has the 4.4 BSD sa_len member 18dnl borrowed from LBL libpcap 19AC_DEFUN([AC_CHECK_SA_LEN], [ 20 AC_MSG_CHECKING(if sockaddr struct has sa_len member) 21 AC_CACHE_VAL($1, 22 AC_TRY_COMPILE([ 23# include <sys/types.h> 24# include <sys/socket.h>], 25 [u_int i = sizeof(((struct sockaddr *)0)->sa_len)], 26 $1=yes, 27 $1=no)) 28 AC_MSG_RESULT($$1) 29 if test $$1 = yes ; then 30 AC_DEFINE([HAVE_SOCKADDR_SA_LEN],1,[Define if struct sockaddr has the sa_len member]) 31 fi 32]) 33