fix bug

1 files changed, 2 insertions, 0 deletions

diff --git a/ev++.C b/ev++.C
index f1f6ce0..d053c89 100644
--- a/ev++.C
+++ b/ev++.C
@@ -4,7 +4,9 @@ namespace ev {
   extern "C" {
     void cb_io       (struct ev_io       *w, int revents) { (*static_cast<io       *>(w))(revents); }
     void cb_timer    (struct ev_timer    *w, int revents) { (*static_cast<timer    *>(w))(revents); }
+    #if EV_PERIODICS
     void cb_periodic (struct ev_periodic *w, int revents) { (*static_cast<periodic *>(w))(revents); }
+    #endif
     void cb_idle     (struct ev_idle     *w, int revents) { (*static_cast<idle     *>(w))(revents); }
     void cb_prepare  (struct ev_prepare  *w, int revents) { (*static_cast<prepare  *>(w))(revents); }
     void cb_check    (struct ev_check    *w, int revents) { (*static_cast<check    *>(w))(revents); }