--- config/ymake.orig	2019-02-28 08:44:39.000000000 +0900
+++ config/ymake	2022-10-08 10:57:29.000000000 +0900
@@ -416,6 +416,12 @@
             breaksw
         case    i386:
         case    x86_64:
+            set model   = x86_64
+            set arch    = x86_64
+            set sysincs = Darwin_Intel
+            set vendor  = Apple
+            breaksw
+        case    arm64:
             set model   = $mach
             set arch    = $mach
             set sysincs = Darwin_Intel