diff --git a/Makefile.in b/Makefile.in
index ab883f69115..a72a288cda6 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -401,7 +401,7 @@ MAKEINFOFLAGS = --split-size=5000000
 # ---------------------------------------------
 
 AS = @AS@
-AR = @AR@
+AR = @AR@ @AR_PLUGIN_OPTION@
 AR_FLAGS = rc
 CC = @CC@
 CXX = @CXX@
@@ -411,7 +411,7 @@ LIPO = @LIPO@
 NM = @NM@
 OBJDUMP = @OBJDUMP@
 OTOOL = @OTOOL@
-RANLIB = @RANLIB@
+RANLIB = @RANLIB@ @RANLIB_PLUGIN_OPTION@
 READELF = @READELF@
 STRIP = @STRIP@
 WINDRES = @WINDRES@
@@ -61403,6 +61403,7 @@ AUTOCONF = autoconf
 $(srcdir)/configure: @MAINT@ $(srcdir)/configure.ac $(srcdir)/config/acx.m4 \
 	$(srcdir)/config/override.m4 $(srcdir)/config/proginstall.m4 \
 	$(srcdir)/config/elf.m4 $(srcdir)/config/isl.m4 \
+	$(srcdir)/config/gcc-plugin.m4 \
 	$(srcdir)/libtool.m4 $(srcdir)/ltoptions.m4 $(srcdir)/ltsugar.m4 \
 	$(srcdir)/ltversion.m4 $(srcdir)/lt~obsolete.m4
 	cd $(srcdir) && $(AUTOCONF)
diff --git a/Makefile.tpl b/Makefile.tpl
index 6e0337fb48f..ae139c8914e 100644
--- a/Makefile.tpl
+++ b/Makefile.tpl
@@ -404,7 +404,7 @@ MAKEINFOFLAGS = --split-size=5000000
 # ---------------------------------------------
 
 AS = @AS@
-AR = @AR@
+AR = @AR@ @AR_PLUGIN_OPTION@
 AR_FLAGS = rc
 CC = @CC@
 CXX = @CXX@
@@ -414,7 +414,7 @@ LIPO = @LIPO@
 NM = @NM@
 OBJDUMP = @OBJDUMP@
 OTOOL = @OTOOL@
-RANLIB = @RANLIB@
+RANLIB = @RANLIB@ @RANLIB_PLUGIN_OPTION@
 READELF = @READELF@
 STRIP = @STRIP@
 WINDRES = @WINDRES@
@@ -2007,6 +2007,7 @@ AUTOCONF = autoconf
 $(srcdir)/configure: @MAINT@ $(srcdir)/configure.ac $(srcdir)/config/acx.m4 \
 	$(srcdir)/config/override.m4 $(srcdir)/config/proginstall.m4 \
 	$(srcdir)/config/elf.m4 $(srcdir)/config/isl.m4 \
+	$(srcdir)/config/gcc-plugin.m4 \
 	$(srcdir)/libtool.m4 $(srcdir)/ltoptions.m4 $(srcdir)/ltsugar.m4 \
 	$(srcdir)/ltversion.m4 $(srcdir)/lt~obsolete.m4
 	cd $(srcdir) && $(AUTOCONF)
diff --git a/config/gcc-plugin.m4 b/config/gcc-plugin.m4
index 8f278719118..c5b72e9a13d 100644
--- a/config/gcc-plugin.m4
+++ b/config/gcc-plugin.m4
@@ -124,3 +124,31 @@ AC_DEFUN([GCC_ENABLE_PLUGINS],
      fi
    fi
 ])
+
+dnl
+dnl
+dnl GCC_PLUGIN_OPTION
+dnl    (SHELL-CODE_HANDLER)
+dnl
+AC_DEFUN([GCC_PLUGIN_OPTION],[dnl
+AC_MSG_CHECKING([for -plugin option])
+
+plugin_names="liblto_plugin.so liblto_plugin-0.dll cyglto_plugin-0.dll"
+plugin_option=
+for plugin in $plugin_names; do
+  plugin_so=`${CC} ${CFLAGS} --print-prog-name $plugin`
+  if test x$plugin_so = x$plugin; then
+    plugin_so=`${CC} ${CFLAGS} --print-file-name $plugin`
+  fi
+  if test x$plugin_so != x$plugin; then
+    plugin_option="--plugin $plugin_so"
+    break
+  fi
+done
+if test -n "$plugin_option"; then
+  $1="$plugin_option"
+  AC_MSG_RESULT($plugin_option)
+else
+  AC_MSG_RESULT([no])
+fi
+])
diff --git a/configure b/configure
index 1224fc4039e..6d2fc6eb5b4 100755
--- a/configure
+++ b/configure
@@ -618,6 +618,8 @@ GFORTRAN_FOR_TARGET
 GCC_FOR_TARGET
 CXX_FOR_TARGET
 CC_FOR_TARGET
+RANLIB_PLUGIN_OPTION
+AR_PLUGIN_OPTION
 READELF
 OTOOL
 OBJDUMP
@@ -12434,6 +12436,43 @@ fi
 
 
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -plugin option" >&5
+$as_echo_n "checking for -plugin option... " >&6; }
+
+plugin_names="liblto_plugin.so liblto_plugin-0.dll cyglto_plugin-0.dll"
+plugin_option=
+for plugin in $plugin_names; do
+  plugin_so=`${CC} ${CFLAGS} --print-prog-name $plugin`
+  if test x$plugin_so = x$plugin; then
+    plugin_so=`${CC} ${CFLAGS} --print-file-name $plugin`
+  fi
+  if test x$plugin_so != x$plugin; then
+    plugin_option="--plugin $plugin_so"
+    break
+  fi
+done
+if test -n "$plugin_option"; then
+  PLUGIN_OPTION="$plugin_option"
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $plugin_option" >&5
+$as_echo "$plugin_option" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+AR_PLUGIN_OPTION=
+RANLIB_PLUGIN_OPTION=
+if test -n "$PLUGIN_OPTION"; then
+  if $AR --help 2>&1 | grep -q "\--plugin"; then
+    AR_PLUGIN_OPTION="$PLUGIN_OPTION"
+  fi
+  if $RANLIB --help 2>&1 | grep -q "\--plugin"; then
+    RANLIB_PLUGIN_OPTION="$PLUGIN_OPTION"
+  fi
+fi
+
+
+
 # Target tools.
 
 # Check whether --with-build-time-tools was given.
diff --git a/configure.ac b/configure.ac
index 66d637d70dc..9c1b8b1d3e1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -24,6 +24,7 @@ m4_include(config/override.m4)
 m4_include(config/proginstall.m4)
 m4_include(config/elf.m4)
 m4_include(config/ax_cxx_compile_stdcxx.m4)
+m4_include(config/gcc-plugin.m4)
 m4_include([libtool.m4])
 m4_include([ltoptions.m4])
 m4_include([ltsugar.m4])
@@ -3475,6 +3476,20 @@ AC_SUBST(CXX)
 AC_SUBST(CFLAGS)
 AC_SUBST(CXXFLAGS)
 
+GCC_PLUGIN_OPTION(PLUGIN_OPTION)
+AR_PLUGIN_OPTION=
+RANLIB_PLUGIN_OPTION=
+if test -n "$PLUGIN_OPTION"; then
+  if $AR --help 2>&1 | grep -q "\--plugin"; then
+    AR_PLUGIN_OPTION="$PLUGIN_OPTION"
+  fi
+  if $RANLIB --help 2>&1 | grep -q "\--plugin"; then
+    RANLIB_PLUGIN_OPTION="$PLUGIN_OPTION"
+  fi
+fi
+AC_SUBST(AR_PLUGIN_OPTION)
+AC_SUBST(RANLIB_PLUGIN_OPTION)
+
 # Target tools.
 AC_ARG_WITH([build-time-tools], 
   [AS_HELP_STRING([--with-build-time-tools=PATH],
diff --git a/libiberty/Makefile.in b/libiberty/Makefile.in
index 4f1213b983b..d19e14a2aca 100644
--- a/libiberty/Makefile.in
+++ b/libiberty/Makefile.in
@@ -49,13 +49,13 @@ mkinstalldirs = $(SHELL) $(libiberty_topdir)/mkinstalldirs
 # Some compilers can't handle cc -c blah.c -o foo/blah.o.
 OUTPUT_OPTION = @OUTPUT_OPTION@
 
-AR = @AR@
+AR = @AR@ @AR_PLUGIN_OPTION@
 AR_FLAGS = rc
 
 CC = @CC@
 CFLAGS = @CFLAGS@
 CPPFLAGS = @CPPFLAGS@
-RANLIB = @RANLIB@
+RANLIB = @RANLIB@ @RANLIB_PLUGIN_OPTION@
 MAKEINFO = @MAKEINFO@
 PERL = @PERL@
 
@@ -487,6 +487,7 @@ aclocal_deps = \
 	$(srcdir)/../config/acx.m4 \
 	$(srcdir)/../config/cet.m4 \
 	$(srcdir)/../config/enable.m4 \
+	$(srcdir)/../config/gcc-plugin.m4 \
 	$(srcdir)/../config/no-executables.m4 \
 	$(srcdir)/../config/override.m4 \
 	$(srcdir)/../config/picflag.m4 \
diff --git a/libiberty/aclocal.m4 b/libiberty/aclocal.m4
index 3378316dced..0757688d52a 100644
--- a/libiberty/aclocal.m4
+++ b/libiberty/aclocal.m4
@@ -15,6 +15,7 @@ m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun
 m4_include([../config/acx.m4])
 m4_include([../config/cet.m4])
 m4_include([../config/enable.m4])
+m4_include([../config/gcc-plugin.m4])
 m4_include([../config/no-executables.m4])
 m4_include([../config/picflag.m4])
 m4_include([../config/warnings.m4])
diff --git a/libiberty/configure b/libiberty/configure
index f7449d6a368..0d757142751 100755
--- a/libiberty/configure
+++ b/libiberty/configure
@@ -645,6 +645,8 @@ CPPFLAGS
 LDFLAGS
 CFLAGS
 CC
+RANLIB_PLUGIN_OPTION
+AR_PLUGIN_OPTION
 RANLIB
 AR
 host_os
@@ -681,7 +683,6 @@ infodir
 docdir
 oldincludedir
 includedir
-runstatedir
 localstatedir
 sharedstatedir
 sysconfdir
@@ -761,7 +762,6 @@ datadir='${datarootdir}'
 sysconfdir='${prefix}/etc'
 sharedstatedir='${prefix}/com'
 localstatedir='${prefix}/var'
-runstatedir='${localstatedir}/run'
 includedir='${prefix}/include'
 oldincludedir='/usr/include'
 docdir='${datarootdir}/doc/${PACKAGE}'
@@ -1014,15 +1014,6 @@ do
   | -silent | --silent | --silen | --sile | --sil)
     silent=yes ;;
 
-  -runstatedir | --runstatedir | --runstatedi | --runstated \
-  | --runstate | --runstat | --runsta | --runst | --runs \
-  | --run | --ru | --r)
-    ac_prev=runstatedir ;;
-  -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
-  | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
-  | --run=* | --ru=* | --r=*)
-    runstatedir=$ac_optarg ;;
-
   -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
     ac_prev=sbindir ;;
   -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
@@ -1160,7 +1151,7 @@ fi
 for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
 		datadir sysconfdir sharedstatedir localstatedir includedir \
 		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
-		libdir localedir mandir runstatedir
+		libdir localedir mandir
 do
   eval ac_val=\$$ac_var
   # Remove trailing slashes.
@@ -1313,7 +1304,6 @@ Fine tuning of the installation directories:
   --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
   --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
   --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
-  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
   --libdir=DIR            object code libraries [EPREFIX/lib]
   --includedir=DIR        C header files [PREFIX/include]
   --oldincludedir=DIR     C header files for non-gcc [/usr/include]
@@ -2941,6 +2931,41 @@ else
 fi
 
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -plugin option" >&5
+$as_echo_n "checking for -plugin option... " >&6; }
+
+plugin_names="liblto_plugin.so liblto_plugin-0.dll cyglto_plugin-0.dll"
+plugin_option=
+for plugin in $plugin_names; do
+  plugin_so=`${CC} ${CFLAGS} --print-prog-name $plugin`
+  if test x$plugin_so = x$plugin; then
+    plugin_so=`${CC} ${CFLAGS} --print-file-name $plugin`
+  fi
+  if test x$plugin_so != x$plugin; then
+    plugin_option="--plugin $plugin_so"
+    break
+  fi
+done
+if test -n "$plugin_option"; then
+  PLUGIN_OPTION="$plugin_option"
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $plugin_option" >&5
+$as_echo "$plugin_option" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+if test -n "$PLUGIN_OPTION"; then
+  if $AR --help 2>&1 | grep -q "\--plugin"; then
+    AR_PLUGIN_OPTION="$PLUGIN_OPTION"
+
+  fi
+  if $RANLIB --help 2>&1 | grep -q "\--plugin"; then
+    RANLIB_PLUGIN_OPTION="$PLUGIN_OPTION"
+
+  fi
+fi
+
 # Add --enable-multilib to configure.
 # Default to --enable-multilib
 # Check whether --enable-multilib was given.
@@ -4295,7 +4320,7 @@ else
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -4341,7 +4366,7 @@ else
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -4365,7 +4390,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -4410,7 +4435,7 @@ else
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -4434,7 +4459,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -7575,8 +7600,6 @@ main ()
     if (*(data + i) != *(data3 + i))
       return 14;
   close (fd);
-  free (data);
-  free (data3);
   return 0;
 }
 _ACEOF
diff --git a/libiberty/configure.ac b/libiberty/configure.ac
index a85ff25501a..9b451a4c61a 100644
--- a/libiberty/configure.ac
+++ b/libiberty/configure.ac
@@ -108,6 +108,18 @@ dnl to call AC_CHECK_PROG.
 AC_CHECK_TOOL(AR, ar)
 AC_CHECK_TOOL(RANLIB, ranlib, :)
 
+GCC_PLUGIN_OPTION(PLUGIN_OPTION)
+if test -n "$PLUGIN_OPTION"; then
+  if $AR --help 2>&1 | grep -q "\--plugin"; then
+    AR_PLUGIN_OPTION="$PLUGIN_OPTION"
+    AC_SUBST(AR_PLUGIN_OPTION)
+  fi
+  if $RANLIB --help 2>&1 | grep -q "\--plugin"; then
+    RANLIB_PLUGIN_OPTION="$PLUGIN_OPTION"
+    AC_SUBST(RANLIB_PLUGIN_OPTION)
+  fi
+fi
+
 dnl When switching to automake, replace the following with AM_ENABLE_MULTILIB.
 # Add --enable-multilib to configure.
 # Default to --enable-multilib
diff --git a/libtool.m4 b/libtool.m4
index 17f8e5f3074..efa62bfcbf0 100644
--- a/libtool.m4
+++ b/libtool.m4
@@ -1325,8 +1325,26 @@ need_locks="$enable_libtool_lock"
 # _LT_CMD_OLD_ARCHIVE
 # -------------------
 m4_defun([_LT_CMD_OLD_ARCHIVE],
-[AC_CHECK_TOOL(AR, ar, false)
+[plugin_option=
+plugin_names="liblto_plugin.so liblto_plugin-0.dll cyglto_plugin-0.dll"
+for plugin in $plugin_names; do
+  plugin_so=`${CC} ${CFLAGS} --print-prog-name $plugin`
+  if test x$plugin_so = x$plugin; then
+    plugin_so=`${CC} ${CFLAGS} --print-file-name $plugin`
+  fi
+  if test x$plugin_so != x$plugin; then
+    plugin_option="--plugin $plugin_so"
+    break
+  fi
+done
+
+AC_CHECK_TOOL(AR, ar, false)
 test -z "$AR" && AR=ar
+if test -n "$plugin_option"; then
+  if $AR --help 2>&1 | grep -q "\--plugin"; then
+    AR="$AR $plugin_option"
+  fi
+fi
 test -z "$AR_FLAGS" && AR_FLAGS=cru
 _LT_DECL([], [AR], [1], [The archiver])
 _LT_DECL([], [AR_FLAGS], [1])
@@ -1337,6 +1355,11 @@ _LT_DECL([], [STRIP], [1], [A symbol stripping program])
 
 AC_CHECK_TOOL(RANLIB, ranlib, :)
 test -z "$RANLIB" && RANLIB=:
+if test -n "$plugin_option" && test "$RANLIB" != ":"; then
+  if $RANLIB --help 2>&1 | grep -q "\--plugin"; then
+    RANLIB="$RANLIB $plugin_option"
+  fi
+fi
 _LT_DECL([], [RANLIB], [1],
     [Commands used to install an old-style archive])
 
diff --git a/zlib/configure b/zlib/configure
index f489f31bc70..8ce61b11119 100755
--- a/zlib/configure
+++ b/zlib/configure
@@ -4169,7 +4169,7 @@ case "$host" in
     case "$enable_cet" in
       auto)
 	# Check if target supports multi-byte NOPs
-	# and if assembler supports CET insn.
+	# and if compiler and assembler support CET insn.
 	cet_save_CFLAGS="$CFLAGS"
 	CFLAGS="$CFLAGS -fcf-protection"
 	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -5502,6 +5502,19 @@ test -z "$deplibs_check_method" && deplibs_check_method=unknown
 
 
 
+plugin_option=
+plugin_names="liblto_plugin.so liblto_plugin-0.dll cyglto_plugin-0.dll"
+for plugin in $plugin_names; do
+  plugin_so=`${CC} ${CFLAGS} --print-prog-name $plugin`
+  if test x$plugin_so = x$plugin; then
+    plugin_so=`${CC} ${CFLAGS} --print-file-name $plugin`
+  fi
+  if test x$plugin_so != x$plugin; then
+    plugin_option="--plugin $plugin_so"
+    break
+  fi
+done
+
 if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args.
 set dummy ${ac_tool_prefix}ar; ac_word=$2
@@ -5595,6 +5608,11 @@ else
 fi
 
 test -z "$AR" && AR=ar
+if test -n "$plugin_option"; then
+  if $AR --help 2>&1 | grep -q "\--plugin"; then
+    AR="$AR $plugin_option"
+  fi
+fi
 test -z "$AR_FLAGS" && AR_FLAGS=cru
 
 
@@ -5799,6 +5817,11 @@ else
 fi
 
 test -z "$RANLIB" && RANLIB=:
+if test -n "$plugin_option" && test "$RANLIB" != ":"; then
+  if $RANLIB --help 2>&1 | grep -q "\--plugin"; then
+    RANLIB="$RANLIB $plugin_option"
+  fi
+fi
 
 
 
@@ -10735,7 +10758,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 10748 "configure"
+#line 10761 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -10841,7 +10864,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 10854 "configure"
+#line 10867 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
