configure: add '-Wundef' to warning flags

[lttng-tools.git] / src / common / fd-tracker / utils-poll.cpp

diff --git a/src/common/fd-tracker/utils-poll.cpp b/src/common/fd-tracker/utils-poll.cpp
index 4949d8160f104bad611ed35f928a76fbb9141194..6a0f2d9bd28c7c6178af1af8d43889b9bbb689e7 100644 (file)
--- a/src/common/fd-tracker/utils-poll.cpp
+++ b/src/common/fd-tracker/utils-poll.cpp
@@ -9,7 +9,7 @@
 
 #include "utils.h"
 
-#if HAVE_EPOLL
+#ifdef HAVE_EPOLL
 
 struct create_args {
        struct lttng_poll_event *events;