https://bugs.gentoo.org/580214
https://sourceforge.net/p/scsirastools/bugs/16/

--- a/src/sgcommon.c
+++ b/src/sgcommon.c
@@ -62,6 +62,7 @@
   -------------------------------------------------------------------------*/
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/sysmacros.h>
 #include <unistd.h>
 #include <stdio.h>
 #include <stdlib.h>
--- a/src/sgsubmon.c
+++ b/src/sgsubmon.c
@@ -34,6 +34,7 @@
  *---------------------------------------------------------------------------*/
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/sysmacros.h>
 #include <unistd.h>
 #include <stdio.h>
 #include <stdlib.h>