--- findutils-4.6.0/gl/lib/mountlist.c
+++ findutils-4.6.0/gl/lib/mountlist.c
@@ -32,6 +32,7 @@
 #include <fcntl.h>
 
 #include <unistd.h>
+#include <sys/sysmacros.h>
 
 #if HAVE_SYS_PARAM_H
 # include <sys/param.h>