diff --color -Naur --ignore-all-space a/atari-fdisk.c b/atari-fdisk.c
--- a/atari-fdisk.c	1998-09-19 02:29:27.000000000 +0100
+++ b/atari-fdisk.c	2021-09-04 22:41:35.286593292 +0100
@@ -182,6 +182,7 @@
 #endif
 
 jmp_buf listingbuf;
+enum xpart_fmts xpart_fmt;
 
 
 
diff --color -Naur --ignore-all-space a/fdisk.h b/fdisk.h
--- a/fdisk.h	2021-09-04 22:24:42.258462148 +0100
+++ b/fdisk.h	2021-09-04 22:41:31.398481485 +0100
@@ -86,11 +86,13 @@
     char *name;
 };
 
-enum {
+enum xpart_fmts {
     xfmt_unknown,
     xfmt_AHDI,
     xfmt_ICD
-} xpart_fmt;			/* which format used for >4 part.s */
+};			/* which format used for >4 part.s */
+
+extern enum xpart_fmts xpart_fmt;
 
 #define MAX_PRIMARY_AHDI	4
 #define MAX_PRIMARY_ICD		12