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- # ===========================================================================
- # https://www.gnu.org/software/autoconf-archive/ax_lib_socket_nsl.html
- # ===========================================================================
- #
- # SYNOPSIS
- #
- # AX_LIB_SOCKET_NSL
- #
- # DESCRIPTION
- #
- # This macro figures out what libraries are required on this platform to
- # link sockets programs.
- #
- # The common cases are not to need any extra libraries, or to need
- # -lsocket and -lnsl. We need to avoid linking with libnsl unless we need
- # it, though, since on some OSes where it isn't necessary it will totally
- # break networking. Unisys also includes gethostbyname() in libsocket but
- # needs libnsl for socket().
- #
- # LICENSE
- #
- # Copyright (c) 2008 Russ Allbery <rra@stanford.edu>
- # Copyright (c) 2008 Stepan Kasal <kasal@ucw.cz>
- # Copyright (c) 2008 Warren Young <warren@etr-usa.com>
- #
- # Copying and distribution of this file, with or without modification, are
- # permitted in any medium without royalty provided the copyright notice
- # and this notice are preserved. This file is offered as-is, without any
- # warranty.
- #serial 7
- AU_ALIAS([LIB_SOCKET_NSL], [AX_LIB_SOCKET_NSL])
- AC_DEFUN([AX_LIB_SOCKET_NSL],
- [
- AC_SEARCH_LIBS([gethostbyname], [nsl])
- AC_SEARCH_LIBS([socket], [socket], [], [
- AC_CHECK_LIB([socket], [socket], [LIBS="-lsocket -lnsl $LIBS"],
- [], [-lnsl])])
- ])
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