dnl check for the sockaddr_un.sun_len member
AC_CHECK_MEMBER([struct sockaddr_un.sun_len],
[AC_DEFINE(HAVE_SOCKADDR_SUN_LEN,1,[Have the sockaddr_un.sun_len member.])],
dnl check for the sockaddr_un.sun_len member
AC_CHECK_MEMBER([struct sockaddr_un.sun_len],
[AC_DEFINE(HAVE_SOCKADDR_SUN_LEN,1,[Have the sockaddr_un.sun_len member.])],