missing header

diff --git a/src/deps_log.cc b/src/deps_log.cc
index b1ec009..78eb23f 100644 (file)
--- a/src/deps_log.cc
+++ b/src/deps_log.cc
@@ -18,6 +18,7 @@
 #include <stdio.h>
 #include <errno.h>
 #include <string.h>
+#include <unistd.h>
 
 #include "graph.h"
 #include "metrics.h"