From 9447618f902c55367babe4d2ec08b5a0b04b88be Mon Sep 17 00:00:00 2001
From: Samuel Williams <samuel.williams@oriontransfer.co.nz>
Date: Mon, 28 Jul 2025 11:27:08 +1200
Subject: [PATCH] Allow installation on JRuby.

See <https://github.com/rubygems/rubygems/pull/8879> for a better fix.
---
 ext/extconf.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/ext/extconf.rb b/ext/extconf.rb
index 60bd519..2d6f57c 100755
--- a/ext/extconf.rb
+++ b/ext/extconf.rb
@@ -6,7 +6,11 @@
 # Copyright, 2023, by Math Ieu.
 # Copyright, 2025, by Stanislav (Stas) Katkov.
 
-return if RUBY_DESCRIPTION =~ /jruby/
+# On JRuby, create a fake Makefile and exit:
+if RUBY_DESCRIPTION =~ /jruby/
+	File.write("Makefile", "all:\n\ninstall:\n\nclean:\n\n")
+	exit 0
+end
 
 require "mkmf"