2 files changed, 9 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog
index 0d9256c84e..fce9a0e8ae 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Feb 19 11:08:32 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* ext/extmk.rb: add cygwin case, nothing excluded.
+	  [ruby-core:73806] [Bug#12071]
+
 Thu Feb 18 21:32:15 2016  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
 
 	* man/irb.1: fix output in EXAMPLES.
diff --git a/ext/extmk.rb b/ext/extmk.rb
index 3efecbc28a..d2832c5aa2 100755
--- a/ext/extmk.rb
+++ b/ext/extmk.rb
@@ -494,7 +494,10 @@ end unless $extstatic
 ext_prefix = "#{$top_srcdir}/ext"
 exts = $static_ext.sort_by {|t, i| i}.collect {|t, i| t}
 default_exclude_exts =
-  if $mswin or $mingw
+  case
+  when $cygwin
+    %w''
+  when $mswin, $mingw
     %w'pty syslog'
   else
     %w'*win32*'