--- a/zlib/ChangeLog.gcj	Sun Aug 21 07:07:55 2011 +0900
+++ b/zlib/ChangeLog.gcj	Fri Oct 27 22:46:09 2017 +0900
@@ -1,3 +1,71 @@
+2017-03-15  Yaakov Selkowitz <yselkowitz@redhat.com>
+
+	PR bootstrap/79771
+	* gzguts.h (WIDECHAR): Do not define for __CYGWIN__.
+	* zlib.h (gzopen_w): Do not declare for __CYGWIN__.
+	* win32/zlib.def: Remove gzopen_w.
+		
+2017-01-22  Matthias Klose  <doko@ubuntu.com>
+
+	* Import zlib 1.2.11.
+	* configure: Regenerate.
+
+2017-01-13  Matthias Klose  <doko@ubuntu.com>
+
+	* Import zlib 1.2.10.
+	* configure: Regenerate.
+
+2016-11-15  Matthias Klose  <doko@ubuntu.com>
+
+	* configure: Regenerate.
+
+2015-11-23  Matthias Klose  <doko@ubuntu.com>
+
+	* Imported zlib 1.2.8; merged local changes.
+
+2015-05-13  Michael Haubenwallner  <michael.haubenwallner@ssi-schaefer.com>
+
+	* Makefile.in: Regenerated with automake-1.11.6.
+	* aclocal.m4: Likewise.
+	* configure: Likewise.
+
+2014-11-11  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
+
+	PR target/63610
+	* configure: Regenerate.
+
+2013-10-15  David Malcolm  <dmalcolm@redhat.com>
+
+	* configure.ac: Add --enable-host-shared, setting up new
+	PICFLAG variable.
+	* Makefile.am: Add PICFLAG to libz_a_CFLAGS.
+	* Makefile.in: Regenerate.
+	* configure: Regenerate.
+
+2013-09-20  Alan Modra  <amodra@gmail.com>
+
+	* configure: Regenerate.
+
+2012-11-16  Matthias Klose  <doko@ubuntu.com>
+
+	* Imported zlib 1.2.7; merged local changes.
+
+2012-09-14  David Edelsohn  <dje.gcc@gmail.com>
+
+	* configure: Regenerated.
+
+2012-05-16  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* configure: Regenerated.
+
+2012-03-02  Matthias Klose  <doko@ubuntu.com>
+
+	* Imported zlib 1.2.5; merged local changes.
+
+2011-11-21  Andreas Tobler  <andreast@fgznet.ch>
+
+        * configure: Regenerate.
+
 2011-02-13  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
 
 	* configure: Regenerate.