* configure.ac: Revert the AM_ZLIB change.
	* Makefile.in: Regenerated.
	* aclocal.m4: Likewise.
	* configure: Likewise.
	* doc/Makefile.in: Likewise.
+2015-03-31  H.J. Lu  <hongjiu.lu@intel.com>
+
+       * configure.ac: Revert the AM_ZLIB change.
+       * Makefile.in: Regenerated.
+       * aclocal.m4: Likewise.
+       * configure: Likewise.
+       * doc/Makefile.in: Likewise.
+
 2015-03-30  H.J. Lu  <hongjiu.lu@intel.com>
 
        PR ld/18169
 
        $(top_srcdir)/../config/plugins.m4 \
        $(top_srcdir)/../config/po.m4 \
        $(top_srcdir)/../config/progtest.m4 \
-       $(top_srcdir)/../config/stdint.m4 $(top_srcdir)/../libtool.m4 \
+       $(top_srcdir)/../config/stdint.m4 \
+       $(top_srcdir)/../config/zlib.m4 $(top_srcdir)/../libtool.m4 \
        $(top_srcdir)/../ltoptions.m4 $(top_srcdir)/../ltsugar.m4 \
        $(top_srcdir)/../ltversion.m4 $(top_srcdir)/../lt~obsolete.m4 \
        $(top_srcdir)/bfd.m4 $(top_srcdir)/warning.m4 \
 
 m4_include([../config/po.m4])
 m4_include([../config/progtest.m4])
 m4_include([../config/stdint.m4])
+m4_include([../config/zlib.m4])
 m4_include([../libtool.m4])
 m4_include([../ltoptions.m4])
 m4_include([../ltsugar.m4])
 
 _ACEOF
 
 
-# Use the system's zlib library.
-zlibdir=-L../zlib
-zlibinc="-I\$(srcdir)/../zlib"
+# Link in zlib if we can.  This allows us to read compressed debug sections.
+# This is used only by compress.c.
+
+  # Use the system's zlib library.
+  zlibdir=-L../zlib
+  zlibinc="-I\$(srcdir)/../zlib"
 
 # Check whether --with-system-zlib was given.
 if test "${with_system_zlib+set}" = set; then :
   withval=$with_system_zlib; zlibdir=
-zlibinc=
+  zlibinc=
 
 fi
 
 
 
 
+
 # If we are configured native, pick a core file support file.
 COREFILE=
 COREFLAG=
 
 AC_CHECK_DECLS(vsnprintf)
 AC_CHECK_DECLS(strnlen)
 
-# Use the system's zlib library.
-zlibdir=-L../zlib
-zlibinc="-I\$(srcdir)/../zlib"
-AC_ARG_WITH(system-zlib,
-[AS_HELP_STRING([--with-system-zlib], [use installed libz])],
-zlibdir=
-zlibinc=
-)
-AC_SUBST(zlibdir)
-AC_SUBST(zlibinc)
+# Link in zlib if we can.  This allows us to read compressed debug sections.
+# This is used only by compress.c.
+AM_ZLIB
 
 # If we are configured native, pick a core file support file.
 COREFILE=
 
        $(top_srcdir)/../config/plugins.m4 \
        $(top_srcdir)/../config/po.m4 \
        $(top_srcdir)/../config/progtest.m4 \
-       $(top_srcdir)/../config/stdint.m4 $(top_srcdir)/../libtool.m4 \
+       $(top_srcdir)/../config/stdint.m4 \
+       $(top_srcdir)/../config/zlib.m4 $(top_srcdir)/../libtool.m4 \
        $(top_srcdir)/../ltoptions.m4 $(top_srcdir)/../ltsugar.m4 \
        $(top_srcdir)/../ltversion.m4 $(top_srcdir)/../lt~obsolete.m4 \
        $(top_srcdir)/bfd.m4 $(top_srcdir)/warning.m4 \