configure: add '-Wundef' to warning flags

[lttng-tools.git] / src / common / compat / poll.cpp

diff --git a/src/common/compat/poll.cpp b/src/common/compat/poll.cpp
index 0c40c4511d266731d7a556daab9aebb172de9982..910b0f62aee469dfc1691e3b7eb212c01d1fdeb7 100644 (file)
--- a/src/common/compat/poll.cpp
+++ b/src/common/compat/poll.cpp
@@ -17,7 +17,7 @@
 
 #include "poll.h"
 
-#if HAVE_EPOLL
+#ifdef HAVE_EPOLL
 
 #include <fcntl.h>
 #include <limits.h>