lib_socket_nsl.m4
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lib_socket_nsl.m4
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	dnl @synopsis LIB_SOCKET_NSL
	dnl
	dnl This macro figures out what libraries are required on this platform
	dnl to link sockets programs.
	dnl
	dnl The common cases are not to need any extra libraries, or to need
	dnl -lsocket and -lnsl. We need to avoid linking with libnsl unless we
	dnl need it, though, since on some OSes where it isn't necessary it
	dnl will totally break networking. Unisys also includes gethostbyname()
	dnl in libsocket but needs libnsl for socket().
	dnl
	dnl @category Misc
	dnl @author Russ Allbery <rra@stanford.edu>
	dnl @author Stepan Kasal <kasal@ucw.cz>
	dnl @author Warren Young <warren@etr-usa.com>
	dnl @version 2005-09-06

	AC_DEFUN([LIB_SOCKET_NSL],
	[
	AC_SEARCH_LIBS([gethostbyname], [nsl])
	AC_SEARCH_LIBS([socket], [socket], [], [
	AC_CHECK_LIB([socket], [socket], [LIBS="-lsocket -lnsl $LIBS"],
	[], [-lnsl])])
	])