--- a/xar/lib/ext2.c
+++ b/xar/lib/ext2.c
@@ -41,6 +41,7 @@
 #include "asprintf.h"
 #endif
 #include <stdio.h>
+#include <stdlib.h>
 #include <unistd.h>
 #include "xar.h"
 #include "arcmod.h"
--- a/xar/lib/linuxattr.c
+++ b/xar/lib/linuxattr.c
@@ -37,6 +37,7 @@
 
 #include "config.h"
 #include <stdio.h>
+#include <stdlib.h>
 #include <unistd.h>
 #include <libgen.h>
 #include "xar.h"