From e1e3657746b935e8c9ab6f4beccd0aaed45db9dc Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Mon, 18 Oct 2021 10:13:15 +0900
Subject: [PATCH] Simplify srcdir fallback

---
 spec/default.mspec | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/spec/default.mspec b/spec/default.mspec
index 8791058f95..162fa8b9f2 100644
--- a/spec/default.mspec
+++ b/spec/default.mspec
@@ -9,11 +9,7 @@ OBJDIR = File.expand_path("spec/ruby/optional/capi/ext")
 class MSpecScript
   builddir = Dir.pwd
   srcdir = ENV['SRCDIR']
-  if !srcdir and File.exist?("#{builddir}/Makefile") then
-    File.open("#{builddir}/Makefile", "r:US-ASCII") {|f|
-      f.read[/^\s*srcdir\s*=\s*(.+)/i] and srcdir = $1
-    }
-  end
+  srcdir ||= File.read("Makefile", encoding: "US-ASCII")[/^\s*srcdir\s*=\s*(.+)/i, 1] rescue nil
   srcdir = File.expand_path(srcdir)
   config = RbConfig::CONFIG