File: tcp-wrappers.m4

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AC_DEFUN([AC_NETATALK_TCP_WRAPPERS], [
	check=maybe
	AC_ARG_ENABLE(tcp-wrappers,
		[  --disable-tcp-wrappers  disable TCP wrappers support],
		[
			if test "x$enableval" = "xno"; then
				wrapcheck=no
			else
				wrapcheck=yes
			fi
		]
	)

	enable=no
	netatalk_cv_tcpwrap=no
	if test "x$wrapcheck" != "xno"; then
		saved_LIBS=$LIBS
		W_LIBS="-lwrap" 
		LIBS="$LIBS $W_LIBS"
		AC_TRY_LINK([ int allow_severity = 0; int deny_severity = 0;]
			,[hosts_access();]
			, netatalk_cv_tcpwrap=yes , 
   			[
				LIBS=$saved_LIBS
				W_LIBS="-lwrap -lnsl" 
				LIBS="$LIBS $W_LIBS"
				AC_TRY_LINK([ int allow_severity = 0; int deny_severity = 0;]
					,[hosts_access();]
					, netatalk_cv_tcpwrap=yes , netatalk_cv_tcpwrap=no)
			]
			, netatalk_cv_tcpwrap=cross)

		LIBS=$saved_LIBS
	fi

	AC_MSG_CHECKING([whether to enable the TCP wrappers])
	if test "x$netatalk_cv_tcpwrap" = "xyes"; then
		AC_DEFINE(TCPWRAP, 1, [Define if TCP wrappers should be used])
		WRAP_LIBS=$W_LIBS
		AC_MSG_RESULT([yes])
	else
		if test "x$wrapcheck" = "xyes"; then
			AC_MSG_ERROR([libwrap not found])
		else
			AC_MSG_RESULT([no])
		fi
	fi

	AC_SUBST(WRAP_LIBS)
])