diff --git a/ChangeLog b/ChangeLog
index 5ee938437..3166bf9ba 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,24 @@
+2009-03-16  Joseph Myers  <joseph@codesourcery.com>
+
+	Merge from GCC:
+
+	2009-03-16  Joseph Myers  <joseph@codesourcery.com>
+
+	* configure.ac (--with-host-libstdcxx): New option.
+	* configure: Regenerate.
+
+	2009-01-29  Robert Millan  <rmh@aybabtu.com>
+
+	* configure.ac: Recognize GNU/kOpenSolaris (*-*-kopensolaris*-gnu).
+	* configure: Regenerate.
+
+	2009-01-12  Sebastian Pop <sebastian.pop@amd.com>
+
+	PR tree-optimization/38515
+	* configure.ac (cloog-polylib): Removed.
+	(with_ppl, with_cloog): Test for "no".
+	* configure: Regenerated.
+
 2009-03-01  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
 
 	Backport from git Libtool:
diff --git a/configure b/configure
index 26d7b2fab..fc95fec84 100755
--- a/configure
+++ b/configure
@@ -969,6 +969,8 @@ Optional Packages:
                           plus --with-gmp-lib=PATH/lib
   --with-gmp-include=PATH specify directory for installed GMP include files
   --with-gmp-lib=PATH     specify directory for the installed GMP library
+  --with-host-libstdcxx=L Use linker arguments L to link with libstdc++
+                          when linking with PPL
   --with-ppl=PATH         Specify prefix directory for the installed PPL package
                           Equivalent to --with-ppl-include=PATH/include
                           plus --with-ppl-lib=PATH/lib
@@ -979,7 +981,6 @@ Optional Packages:
                           plus --with-cloog-lib=PATH/lib
   --with-cloog-include=PATH Specify directory for installed CLooG include files
   --with-cloog-lib=PATH   Specify the directory for the installed CLooG library
-  --with-cloog-polylib=PATH Specify prefix directory for the installed CLooG-PolyLib package
   --with-build-sysroot=SYSROOT
                           use sysroot as the system root during the build
   --with-debug-prefix-map='A=B C=D ...'
@@ -2172,7 +2173,7 @@ esac
 # Disable libmudflap on some systems.
 if test x$enable_libmudflap = x ; then
     case "${target}" in
-    *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | bfin*-*-uclinux*)
+    *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | bfin*-*-uclinux* | *-*-kopensolaris*-gnu)
         # Enable libmudflap by default in GNU and friends.
 	;;
     *-*-freebsd*)
@@ -2189,7 +2190,7 @@ fi
 if test x$enable_libgomp = x ; then
     # Enable libgomp by default on hosted POSIX systems.
     case "${target}" in
-    *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu)
+    *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 	;;
     *-*-netbsd* | *-*-freebsd* | *-*-openbsd*)
 	;;
@@ -2687,7 +2688,7 @@ case "${target}" in
   ip2k-*-*)
     noconfigdirs="$noconfigdirs target-libiberty target-libstdc++-v3 ${libgcj}"
     ;;
-  *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu)
+  *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
     ;;
   *-*-lynxos*)
@@ -4809,11 +4810,26 @@ fi
 
 
 
+# Allow host libstdc++ to be specified for static linking with PPL.
+
+# Check whether --with-host-libstdcxx or --without-host-libstdcxx was given.
+if test "${with_host_libstdcxx+set}" = set; then
+  withval="$with_host_libstdcxx"
+
+fi;
+
+case $with_host_libstdcxx in
+  no|yes)
+    { { echo "$as_me:$LINENO: error: -with-host-libstdcxx needs an argument" >&5
+echo "$as_me: error: -with-host-libstdcxx needs an argument" >&2;}
+   { (exit 1); exit 1; }; }
+    ;;
+esac
 
 # Check for PPL
 ppl_major_version=0
 ppl_minor_version=10
-ppllibs=" -lppl_c -lppl -lgmpxx "
+ppllibs=" -lppl_c -lppl -lgmpxx $with_host_libstdcxx "
 pplinc=
 
 
@@ -4835,20 +4851,25 @@ if test "${with_ppl_lib+set}" = set; then
 
 fi;
 
-if test "x$with_ppl" != x; then
-  ppllibs="-L$with_ppl/lib -lppl_c -lppl -lgmpxx"
-  pplinc="-I$with_ppl/include $pplinc"
-  LIBS="$ppllibs $LIBS"
-fi
+case $with_ppl in
+  no)
+    ppllibs=
+    ;;
+  *)
+    ppllibs="-L$with_ppl/lib -lppl_c -lppl -lgmpxx $with_host_libstdcxx"
+    pplinc="-I$with_ppl/include $pplinc"
+    LIBS="$ppllibs $LIBS"
+    ;;
+esac
 if test "x$with_ppl_include" != x; then
   pplinc="-I$with_ppl_include $pplinc"
 fi
 if test "x$with_ppl_lib" != x; then
-  ppllibs="-L$with_ppl_lib -lppl_c -lppl -lgmpxx"
+  ppllibs="-L$with_ppl_lib -lppl_c -lppl -lgmpxx $with_host_libstdcxx"
   LIBS="$ppllibs $LIBS"
 fi
 if test "x$with_ppl$with_ppl_include$with_ppl_lib" = x && test -d ${srcdir}/ppl; then
-  ppllibs='-L$$r/$(HOST_SUBDIR)/ppl/.libs -L$$r/$(HOST_SUBDIR)/ppl/_libs -lppl_c -lppl -lgmpxx '
+  ppllibs='-L$$r/$(HOST_SUBDIR)/ppl/.libs -L$$r/$(HOST_SUBDIR)/ppl/_libs -lppl_c -lppl -lgmpxx '"$with_host_libstdcxx "
   pplinc='-I$$r/$(HOST_SUBDIR)/ppl/include -I$$s/ppl/include '
   LIBS="$ppllibs $LIBS"
 fi
@@ -4948,22 +4969,17 @@ if test "${with_cloog_lib+set}" = set; then
 
 fi;
 
-# Check whether --with-cloog-polylib or --without-cloog-polylib was given.
-if test "${with_cloog_polylib+set}" = set; then
-  withval="$with_cloog_polylib"
-
-fi;
-
-if test "x$with_cloog" != x; then
-  clooglibs="-L$with_cloog/lib -lcloog"
-  clooginc="-I$with_cloog/include -DCLOOG_PPL_BACKEND "
-  LIBS="$clooglibs $LIBS"
-fi
-if test "x$with_cloog_polylib" != x; then
-  clooglibs="-L$with_cloog/lib -lcloog"
-  clooginc="-I$with_cloog/include "
-  LIBS="$clooglibs $LIBS"
-fi
+case $with_cloog in
+  no)
+    clooglibs=
+    clooginc=
+    ;;
+  *)
+    clooglibs="-L$with_cloog/lib -lcloog"
+    clooginc="-I$with_cloog/include -DCLOOG_PPL_BACKEND "
+    LIBS="$clooglibs $LIBS"
+    ;;
+esac
 if test "x$with_cloog_include" != x; then
   clooginc="-I$with_cloog_include -DCLOOG_PPL_BACKEND "
 fi
@@ -5712,7 +5728,7 @@ case "${target}" in
   *-*-netware*)
     target_makefile_frag="config/mt-netware"
     ;;
-  *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu)
+  *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
     target_makefile_frag="config/mt-gnu"
     ;;
   *-*-aix4.[3456789]* | *-*-aix[56789].*)
diff --git a/configure.ac b/configure.ac
index ab269c2dc..9ac0824a5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -408,7 +408,7 @@ esac
 # Disable libmudflap on some systems.
 if test x$enable_libmudflap = x ; then
     case "${target}" in
-    *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | bfin*-*-uclinux*)
+    *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | bfin*-*-uclinux* | *-*-kopensolaris*-gnu)
         # Enable libmudflap by default in GNU and friends.
 	;;
     *-*-freebsd*)
@@ -425,7 +425,7 @@ fi
 if test x$enable_libgomp = x ; then
     # Enable libgomp by default on hosted POSIX systems.
     case "${target}" in
-    *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu)
+    *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
 	;;
     *-*-netbsd* | *-*-freebsd* | *-*-openbsd*)
 	;;
@@ -923,7 +923,7 @@ case "${target}" in
   ip2k-*-*)
     noconfigdirs="$noconfigdirs target-libiberty target-libstdc++-v3 ${libgcj}"
     ;;
-  *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu)
+  *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
     noconfigdirs="$noconfigdirs target-newlib target-libgloss"
     ;;
   *-*-lynxos*)
@@ -1315,11 +1315,20 @@ fi
 AC_SUBST(gmplibs)
 AC_SUBST(gmpinc)
 
+# Allow host libstdc++ to be specified for static linking with PPL.
+AC_ARG_WITH(host-libstdcxx, [  --with-host-libstdcxx=L Use linker arguments L to link with libstdc++
+                          when linking with PPL])
+
+case $with_host_libstdcxx in
+  no|yes)
+    AC_MSG_ERROR([-with-host-libstdcxx needs an argument])
+    ;;
+esac
 
 # Check for PPL
 ppl_major_version=0
 ppl_minor_version=10
-ppllibs=" -lppl_c -lppl -lgmpxx "
+ppllibs=" -lppl_c -lppl -lgmpxx $with_host_libstdcxx "
 pplinc=
 
 AC_ARG_WITH(ppl, [  --with-ppl=PATH         Specify prefix directory for the installed PPL package
@@ -1328,20 +1337,25 @@ AC_ARG_WITH(ppl, [  --with-ppl=PATH         Specify prefix directory for the ins
 AC_ARG_WITH(ppl_include, [  --with-ppl-include=PATH Specify directory for installed PPL include files])
 AC_ARG_WITH(ppl_lib, [  --with-ppl-lib=PATH     Specify the directory for the installed PPL library])
 
-if test "x$with_ppl" != x; then
-  ppllibs="-L$with_ppl/lib -lppl_c -lppl -lgmpxx"
-  pplinc="-I$with_ppl/include $pplinc"
-  LIBS="$ppllibs $LIBS"
-fi
+case $with_ppl in 
+  no)
+    ppllibs=
+    ;;
+  *)
+    ppllibs="-L$with_ppl/lib -lppl_c -lppl -lgmpxx $with_host_libstdcxx"
+    pplinc="-I$with_ppl/include $pplinc"
+    LIBS="$ppllibs $LIBS"
+    ;;
+esac
 if test "x$with_ppl_include" != x; then
   pplinc="-I$with_ppl_include $pplinc"
 fi
 if test "x$with_ppl_lib" != x; then
-  ppllibs="-L$with_ppl_lib -lppl_c -lppl -lgmpxx"
+  ppllibs="-L$with_ppl_lib -lppl_c -lppl -lgmpxx $with_host_libstdcxx"
   LIBS="$ppllibs $LIBS"
 fi
 if test "x$with_ppl$with_ppl_include$with_ppl_lib" = x && test -d ${srcdir}/ppl; then
-  ppllibs='-L$$r/$(HOST_SUBDIR)/ppl/.libs -L$$r/$(HOST_SUBDIR)/ppl/_libs -lppl_c -lppl -lgmpxx '
+  ppllibs='-L$$r/$(HOST_SUBDIR)/ppl/.libs -L$$r/$(HOST_SUBDIR)/ppl/_libs -lppl_c -lppl -lgmpxx '"$with_host_libstdcxx "
   pplinc='-I$$r/$(HOST_SUBDIR)/ppl/include -I$$s/ppl/include '
   LIBS="$ppllibs $LIBS"
 fi
@@ -1377,18 +1391,18 @@ AC_ARG_WITH(cloog, [  --with-cloog=PATH       Specify prefix directory for the i
                           plus --with-cloog-lib=PATH/lib])
 AC_ARG_WITH(cloog_include, [  --with-cloog-include=PATH Specify directory for installed CLooG include files])
 AC_ARG_WITH(cloog_lib, [  --with-cloog-lib=PATH   Specify the directory for the installed CLooG library])
-AC_ARG_WITH(cloog-polylib, [  --with-cloog-polylib=PATH Specify prefix directory for the installed CLooG-PolyLib package])
 
-if test "x$with_cloog" != x; then
-  clooglibs="-L$with_cloog/lib -lcloog"
-  clooginc="-I$with_cloog/include -DCLOOG_PPL_BACKEND "
-  LIBS="$clooglibs $LIBS"
-fi
-if test "x$with_cloog_polylib" != x; then
-  clooglibs="-L$with_cloog/lib -lcloog"
-  clooginc="-I$with_cloog/include "
-  LIBS="$clooglibs $LIBS"
-fi
+case $with_cloog in 
+  no)
+    clooglibs=
+    clooginc=
+    ;;
+  *)
+    clooglibs="-L$with_cloog/lib -lcloog"
+    clooginc="-I$with_cloog/include -DCLOOG_PPL_BACKEND "
+    LIBS="$clooglibs $LIBS"
+    ;;
+esac
 if test "x$with_cloog_include" != x; then
   clooginc="-I$with_cloog_include -DCLOOG_PPL_BACKEND "
 fi
@@ -2024,7 +2038,7 @@ case "${target}" in
   *-*-netware*)
     target_makefile_frag="config/mt-netware"
     ;;
-  *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu)
+  *-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
     target_makefile_frag="config/mt-gnu"
     ;;
   *-*-aix4.[[3456789]]* | *-*-aix[[56789]].*)