$NetBSD: patch-ac,v 1.3 2021/12/27 03:17:17 dholland Exp $

Support 64-bit arm.

Don't declare own errno.

--- scmfig.h.orig	2006-06-04 02:35:35.000000000 +0000
+++ scmfig.h
@@ -277,6 +277,9 @@ rgx.c	init_rgx();	regcomp and regexec. *
 #  endif
 # endif
 #endif
+#ifdef __aarch64__
+#define SHORT_INT
+#endif
 #ifdef __alpha
 # define SHORT_INT
 #endif
@@ -816,20 +819,6 @@ typedef SCM  *SCMPTR;
 			       gc_for_open_files();\
 			      else if (!SCM_INTERRUPTED(errno)) break;}}
 
-#ifndef MSDOS
-# ifdef ARM_ULIB
-    extern volatile int errno;
-# else
-    extern int errno;
-# endif
-#endif
-#ifdef __TURBOC__
-# if (__TURBOC__==1)
- /* Needed for TURBOC V1.0 */
- extern int errno;
-# endif
-#endif
-
 /* EXIT_SUCCESS is the default code to return from SCM if no errors
    were encountered.  EXIT_FAILURE is the default code to return from
    SCM if errors were encountered.  The return code can be explicitly