https://git.ruby-lang.org/ruby.git/commit/?id=f10c9cb1f2

From f10c9cb1f2dfca024937bc48137168124d8511aa Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
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

diff --git a/ext/zlib/zlib.gemspec b/ext/zlib/zlib.gemspec
index f5b6443..4a77ae3 100644
--- a/ext/zlib/zlib.gemspec
+++ b/ext/zlib/zlib.gemspec
@@ -1,9 +1,16 @@ https://github.com/ruby/ruby/blob/trunk/ext/zlib/zlib.gemspec#L1
 # 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
-- 
cgit v0.10.2


--
ML: ruby-changes@q...
Info: http://www.atdot.net/~ko1/quickml/