AC_DEFUN([AC_REQUIRE_SOCKET],
[
    AC_SEARCH_LIBS(socket, [xnet bsd socket inet], [have_socket=yes])
    if test x"$have_socket" = x"yes"; then
      AC_SEARCH_LIBS(gethostbyname, [bsd socket inet netinet nsl])
      AC_CHECK_MEMBERS([struct linger.l_linger], , , [
#include <sys/types.h>
#include <sys/socket.h>
		       ])
    else
	AC_MSG_ERROR([Couldn't find socket functions])
    fi
])