From 9b7d8947df9780c120db7a1407bbe06e2004c511 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 7 Nov 2018 16:51:19 +0000
Subject: Clear CC_WRAPPER in other than the toplevel

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65611 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/mkmf.rb | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'lib')

diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index a1cf99e3de..355ea171ee 100644
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -1971,6 +1971,7 @@ VPATH = #{vpath.join(CONFIG['PATH_SEPARATOR'])}
     headers << '$(RUBY_EXTCONF_H)' if $extconf_h
     mk << %{
 
+CC_WRAPPER = #{CONFIG['CC_WRAPPER']}
 CC = #{CONFIG['CC']}
 CXX = #{CONFIG['CXX']}
 LIBRUBY = #{CONFIG['LIBRUBY']}
@@ -2519,6 +2520,9 @@ site-install-rb: install-rb
       end
       $warnflags = config['warnflags'] unless $extmk
     end
+    if (w = rbconfig['CC_WRAPPER']) and !w.empty? and !File.executable?(w)
+      rbconfig['CC_WRAPPER'] = config['CC_WRAPPER'] = ''
+    end
     $CFLAGS = with_config("cflags", arg_config("CFLAGS", config["CFLAGS"])).dup
     $CXXFLAGS = (with_config("cxxflags", arg_config("CXXFLAGS", config["CXXFLAGS"]))||'').dup
     $ARCH_FLAG = with_config("arch_flag", arg_config("ARCH_FLAG", config["ARCH_FLAG"])).dup
-- 
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