diff -Nur squashfs3.0.orig/squashfs-tools/mksquashfs.c squashfs3.0/squashfs-tools/mksquashfs.c
--- squashfs3.0.orig/squashfs-tools/mksquashfs.c	2006-03-15 22:36:20.000000000 +0100
+++ squashfs3.0/squashfs-tools/mksquashfs.c	2025-08-04 07:31:59.418392277 +0200
@@ -40,6 +40,7 @@
 #include <signal.h>
 #include <setjmp.h>
 #include <sys/mman.h>
+#include <sys/sysmacros.h>
 
 #ifndef linux
 #define __BYTE_ORDER BYTE_ORDER