diff '--color=never' -pruN cramfs-1.1/mkcramfs.c cramfs-1.1-changed/mkcramfs.c
--- cramfs-1.1/mkcramfs.c	2002-02-20 10:03:32.000000000 +0200
+++ cramfs-1.1/mkcramfs.c	2020-12-29 17:09:45.275959900 +0200
@@ -23,6 +23,7 @@
  */
 
 #include <sys/types.h>
+#include <sys/sysmacros.h>
 #include <stdio.h>
 #include <sys/stat.h>
 #include <unistd.h>