mkconfig.rb: SDKROOT

* tool/mkconfig.rb (RbConfig): allow prefix includedir by SDKROOT
  environment variable on OSX.  cf.
  http://www.opensource.apple.com/source/ruby/ruby-106/patches/tool_mkconfig.rb.diff

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49556 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 0 deletions

diff --git a/tool/mkconfig.rb b/tool/mkconfig.rb
index 3da57581ee..e874b3f407 100755
--- a/tool/mkconfig.rb
+++ b/tool/mkconfig.rb
@@ -132,6 +132,8 @@ File.foreach "config.status" do |line|
       if universal
         val.sub!(/universal/, %q[#{arch && universal[/(?:\A|\s)#{Regexp.quote(arch)}=(\S+)/, 1] || '\&'}])
       end
+    when /^includedir$/
+      val = '"$(SDKROOT)"'+val if /darwin/ =~ arch
     end
     v = "  CONFIG[\"#{name}\"] #{eq} #{val}\n"
     if fast[name]
@@ -232,6 +234,9 @@ end
 
 print(*v_fast)
 print(*v_others)
+print <<EOS if /darwin/ =~ arch
+  CONFIG["SDKROOT"] = ENV["SDKROOT"] || "" # don't run xcrun everytime, usually useless.
+EOS
 print <<EOS
   CONFIG["archdir"] = "$(rubyarchdir)"
   CONFIG["topdir"] = File.dirname(__FILE__)