diff -Naru orig/serial.c new/serial.c
--- orig/serial.c	2019-07-26 18:01:44.178086824 -0500
+++ new/serial.c	2019-07-26 18:02:49.742084883 -0500
@@ -64,7 +64,7 @@
 	 * stable and architecture-independent.  It is *not* a good model
 	 * for other Unixes where either or both assumptions may break.
 	 */
-	int devmajor = major(sb.st_rdev);
+	int devmajor = gnu_dev_major(sb.st_rdev);
         /* 207 are Freescale i.MX UARTs (ttymxc*) */
 	if (devmajor == 4 || devmajor == 204 || devmajor == 207)
 	    devtype = source_rs232;