--- a/src/test_config.cc	2022-09-06 21:21:10.600553457 +0200
+++ b/src/test_config.cc	2022-09-06 21:21:42.736614599 +0200
@@ -1,6 +1,7 @@
 #include <getopt.h>
 #include <sasl/sasl.h>
 #include <string.h>
+#include <libgen.h>
 
 #include "config.h"
 #include "log.h"