From 5f87c7c69c32009edab41710055c262ad4a8f388 Mon Sep 17 00:00:00 2001
From: Jay Lawrence <jay@patientway.com>
Date: Tue, 19 Mar 2019 09:16:17 -0400
Subject: [PATCH] Older versions of JRuby do not load RbConfig by default

---
 extconf.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/extconf.rb b/extconf.rb
index 743b1eb..aff37e4 100644
--- a/extconf.rb
+++ b/extconf.rb
@@ -1,3 +1,4 @@
+require 'rbconfig'
 mf = File.read('Makefile')
 mf = mf.gsub(/^BINDIR\s*=.*$/, "BINDIR = #{RbConfig::CONFIG['bindir']}")
 mf = mf.gsub(/^PREFIX\s*=.*$/, "PREFIX = #{File.dirname(RbConfig::CONFIG['libdir'])}")