1AC_DEFUN([PDNS_CHECK_NETWORK_LIBS],[
2  AC_SEARCH_LIBS([inet_aton], [resolv])
3  AC_SEARCH_LIBS([gethostbyname], [nsl])
4  AC_SEARCH_LIBS([socket], [socket])
5  AC_SEARCH_LIBS([gethostent], [nsl])
6  AC_CHECK_FUNCS([recvmmsg sendmmsg accept4])
7])
8