--- config/_arch-n-opsys.orig	2022-07-28 12:55:45.000000000 +0800
+++ config/_arch-n-opsys	2023-01-23 03:30:12.000000000 +0800
@@ -66,7 +66,9 @@
       powerpc)
 	ARCH=$(pick_arch ppc ppc64)
 	case `uname -r` in
+	  8*) OPSYS=darwin;  HEAP_OPSYS=darwin ;; # MacOS X 10.4 Leopard
 	  9*) OPSYS=darwin;  HEAP_OPSYS=darwin ;; # MacOS X 10.5 Leopard
+	  10*) OPSYS=darwin;  HEAP_OPSYS=darwin ;; # MacOS X 10.6 Snow Leopard
 	  *) exit 1;;
 	esac;;
       i386)