include libgen.h for basename

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/filesetup.c b/filesetup.c
index ec5d781..9cc4872 100644
--- a/filesetup.c
+++ b/filesetup.c
@@ -3,6 +3,7 @@
 #include <string.h>
 #include <assert.h>
 #include <dirent.h>
+#include <libgen.h>
 #include <sys/stat.h>
 #include <sys/mman.h>
 #include <sys/types.h>