diff -up boinc_core_release_6_12/clientscr/screensaver_x11.cpp.jx boinc_core_release_6_12/clientscr/screensaver_x11.cpp
--- boinc_core_release_6_12/clientscr/screensaver_x11.cpp.jx	2010-07-19 16:06:49.000000000 -0400
+++ boinc_core_release_6_12/clientscr/screensaver_x11.cpp	2012-01-12 16:19:22.152079366 -0500
@@ -397,6 +397,30 @@ void *event_loop(void*)
   pthread_exit(0);
 }
 
+/* hack */
+static xcb_atom_t
+xcb_atom_get(xcb_connection_t *connection, const char *atom_name)
+{
+	if(atom_name == NULL)
+		return XCB_NONE;
+	xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(connection,
+		xcb_intern_atom(connection, 0, strlen(atom_name), atom_name),
+				NULL);
+	if(!reply)
+		return XCB_NONE;
+	xcb_atom_t atom = reply->atom;
+	free(reply);
+	return atom;
+}
+
+/* also hack */
+#ifndef WINDOW
+#define WINDOW XCB_ATOM_WINDOW
+#define WM_COMMAND XCB_ATOM_WM_COMMAND
+#define STRING XCB_ATOM_STRING
+#define WM_CLASS XCB_ATOM_WM_CLASS
+#endif
+
 /// Program entry point.
 int main(int argc, char *argv[])
 {