From 9385bd8e59d5d03c177bd2beba5fb7ad737d2008 Mon Sep 17 00:00:00 2001
From: Hiroshi SHIBATA <hsbt@ruby-lang.org>
Date: Tue, 8 Feb 2022 11:49:05 +0900
Subject: [PATCH] Support directory layout of ruby/ruby repository

---
 ipaddr.gemspec | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/ipaddr.gemspec b/ipaddr.gemspec
index 352570a..d571112 100644
--- a/ipaddr.gemspec
+++ b/ipaddr.gemspec
@@ -1,9 +1,17 @@
 # frozen_string_literal: true
 # coding: utf-8
-lib = File.expand_path("../lib", __FILE__)
-$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 
-version = File.foreach(File.expand_path("ipaddr.rb", lib)).find do |line|
+if File.exist?(File.expand_path("ipaddr.gemspec"))
+  lib = File.expand_path("../lib", __FILE__)
+  $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+
+  file = File.expand_path("ipaddr.rb", lib)
+else
+  # for ruby-core
+  file = File.expand_path("ipaddr.rb")
+end
+
+version = File.foreach(file).find do |line|
   /^\s*VERSION\s*=\s*["'](.*)["']/ =~ line and break $1
 end