From ad1502202c72fe01aefe1035b392e0363c43cb6f Mon Sep 17 00:00:00 2001
From: Hiroshi SHIBATA <hsbt@ruby-lang.org>
Date: Tue, 17 Jan 2023 17:11:34 +0900
Subject: configure of libyaml couldn't detect "arm64-apple-darwin22" for build
 host.

  checking whether make sets $(MAKE)... (cached) yes
  checking build system type... arm-apple-darwin21.6.0
  checking host system type... Invalid configuration `arm64-apple-darwin21': machine `arm64-apple' not recognized
  configure: error: /bin/sh /Users/hsbt/Downloads/yaml-0.2.5/config/config.sub arm64-apple-darwin21 failed
  *** extconf.rb failed ***
---
 ext/psych/extconf.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ext/psych/extconf.rb b/ext/psych/extconf.rb
index 41daf8c..e7dd0bb 100644
--- a/ext/psych/extconf.rb
+++ b/ext/psych/extconf.rb
@@ -22,7 +22,7 @@ if yaml_source
   args = [
     yaml_configure,
     "--enable-#{shared ? 'shared' : 'static'}",
-    "--host=#{RbConfig::CONFIG['host'].sub(/-unknown-/, '-')}",
+    "--host=#{RbConfig::CONFIG['host'].sub(/-unknown-/, '-').sub(/arm64/, 'arm')}",
     "CC=#{RbConfig::CONFIG['CC']}",
     *(["CFLAGS=-w"] if RbConfig::CONFIG["GCC"] == "yes"),
   ]
-- 
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