From f10c9cb1f2dfca024937bc48137168124d8511aa Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Sun, 29 Sep 2019 18:21:17 +0900
Subject: [ruby/zlib] Search zlib.c as a gem

https://github.com/ruby/zlib/commit/8f43b264cd
---
 ext/zlib/zlib.gemspec | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

(limited to 'ext/zlib/zlib.gemspec')

diff --git a/ext/zlib/zlib.gemspec b/ext/zlib/zlib.gemspec
index f5b6443258..4a77ae325e 100644
--- a/ext/zlib/zlib.gemspec
+++ b/ext/zlib/zlib.gemspec
@@ -1,9 +1,16 @@
 # coding: utf-8
 # frozen_string_literal: true
-source_version = File.open(File.join(__dir__, "zlib.c")) {|f|
-  f.gets("\n#define RUBY_ZLIB_VERSION ")
-  f.gets[/\s*(".+")/, 1].undump
-}
+
+source_version = ["", "ext/zlib/"].find do |dir|
+  begin
+    break File.open(File.join(__dir__, "#{dir}zlib.c")) {|f|
+      f.gets("\n#define RUBY_ZLIB_VERSION ")
+      f.gets[/\s*"(.+)"/, 1]
+    }
+  rescue Errno::ENOENT
+  end
+end
+
 Gem::Specification.new do |spec|
   spec.name          = "zlib"
   spec.version       = source_version
-- 
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