--- configure.ac.orig	2015-07-03 07:10:14.570457101 +0200
+++ configure.ac	2015-07-03 07:10:46.449875012 +0200
@@ -158,7 +158,7 @@ AC_CHECK_LIB(expat,XML_ParserCreate,[EXP
 	     [AC_MSG_ERROR([Can't find expat library. Please install expat.])])
 AC_SUBST(EXPAT_LIBS)
 
-AC_CHECK_FUNCS(clearenv fdatasync)
+AC_CHECK_FUNCS(clearenv fdatasync getnetgrent)
 
 if test "x$GCC" = "xyes"; then
   LDFLAGS="-Wl,--as-needed $LDFLAGS"
--- src/polkitbackend/polkitbackendinteractiveauthority.c.orig	2015-05-08 10:22:03.093307918 +0200
+++ src/polkitbackend/polkitbackendinteractiveauthority.c	2015-05-08 10:23:44.516263273 +0200
@@ -2103,6 +2103,7 @@ get_users_in_group (PolkitIdentity
   return ret;
 }
 
+#if defined HAVE_GETNETGRENT
 static GList *
 get_users_in_net_group (PolkitIdentity                    *group,
                         gboolean                           include_root)
@@ -2154,6 +2155,7 @@ get_users_in_net_group (PolkitIdentity
   endnetgrent ();
   return ret;
 }
+#endif
 
 /* ---------------------------------------------------------------------------------------------------- */
 
@@ -2243,10 +2245,12 @@ authentication_agent_initiate_challenge
         {
           user_identities = g_list_concat (user_identities, get_users_in_group (identity, FALSE));
         }
+#if defined HAVE_GETNETGRENT
       else if (POLKIT_IS_UNIX_NETGROUP (identity))
         {
           user_identities =  g_list_concat (user_identities, get_users_in_net_group (identity, FALSE));
         }
+#endif
       else
         {
           g_warning ("Unsupported identity");
--- src/polkitbackend/polkitbackendjsauthority.c.orig	2015-05-08 10:26:51.509181105 +0200
+++ src/polkitbackend/polkitbackendjsauthority.c	2015-05-08 10:27:41.357159439 +0200
@@ -180,13 +180,17 @@ static JSClass js_polkit_class = {
 
 static JSBool js_polkit_log (JSContext *cx, unsigned argc, jsval *vp);
 static JSBool js_polkit_spawn (JSContext *cx, unsigned argc, jsval *vp);
+#if defined HAVE_GETNETGRENT
 static JSBool js_polkit_user_is_in_netgroup (JSContext *cx, unsigned argc, jsval *vp);
+#endif
 
 static JSFunctionSpec js_polkit_functions[] =
 {
   JS_FS("log",            js_polkit_log,            0, 0),
   JS_FS("spawn",          js_polkit_spawn,          0, 0),
+#if defined HAVE_GETNETGRENT
   JS_FS("_userIsInNetGroup", js_polkit_user_is_in_netgroup,          0, 0),
+#endif
   JS_FS_END
 };
 
@@ -1441,6 +1445,7 @@ js_polkit_spawn (JSContext  *cx,
 /* ---------------------------------------------------------------------------------------------------- */
 
 
+#if defined HAVE_GETNETGRENT
 static JSBool
 js_polkit_user_is_in_netgroup (JSContext  *cx,
                                unsigned    argc,
@@ -1477,7 +1482,7 @@ js_polkit_user_is_in_netgroup (JSContext
  out:
   return ret;
 }
-
+#endif
 
 
 /* ---------------------------------------------------------------------------------------------------- */
