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Diffstat (limited to 'm4/m4/salen.m4')
| -rw-r--r-- | m4/m4/salen.m4 | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/m4/m4/salen.m4 b/m4/m4/salen.m4 new file mode 100644 index 0000000..6e858da --- /dev/null +++ b/m4/m4/salen.m4 @@ -0,0 +1,32 @@ +dnl Copyright (c) 1995, 1996, 1997, 1998 +dnl tising materials mentioning +dnl dnl features or use of this software display the following acknowledgement: +dnl dnl ``This product includes software developed by the University of California, +dnl dnl Lawrence Berkeley Laboratory and its contributors.'' Neither the name of +dnl dnl the University nor the names of its contributors may be used to endorse +dnl dnl or promote products derived from this software without specific prior +dnl dnl written permission. +dnl dnl THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED +dnl dnl WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF +dnl dnl MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +dnl dnl +dnl dnl LBL autoconf macros +dnl dnl +dnl +dnl +dnl Checks to see if the sockaddr struct has the 4.4 BSD sa_len member +dnl borrowed from LBL libpcap +AC_DEFUN(AC_CHECK_SA_LEN, [ + AC_MSG_CHECKING(if sockaddr struct has sa_len member) + AC_CACHE_VAL($1, + AC_TRY_COMPILE([ +# include <sys/types.h> +# include <sys/socket.h>], + [u_int i = sizeof(((struct sockaddr *)0)->sa_len)], + $1=yes, + $1=no)) + AC_MSG_RESULT($$1) + if test $$1 = yes ; then + AC_DEFINE([HAVE_SOCKADDR_SA_LEN],1,[Define if struct sockaddr has the sa_len member]) + fi +]) |