--- a/gl/lib/mountlist.c
+++ b/gl/lib/mountlist.c
@@ -118,6 +118,8 @@
 # include <dirent.h>
 #endif
 
+#include <sys/sysmacros.h>
+
 #ifdef DOLPHIN
 /* So special that it's not worth putting this in autoconf.  */
 # undef MOUNTED_FREAD_FSTYP