diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index ec5509eb9ee0be746f323bbc121c7b80dcddcbd9..276f0bfe89ee271266116b3960b3779826f2eed5 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,15 @@
+2011-07-22  Ian Lance Taylor  <iant@google.com>
+
+	* fragment.am (CONFIG_CXXFLAGS): Add -frandom-seed.
+	* Makefile.in: Rebuild.
+	* doc/Makefile.in: Rebuild.
+	* include/Makefile.in: Rebuild.
+	* libsupc++/Makefile.in: Rebuild.
+	* po/Makefile.in: Rebuild.
+	* python/Makefile.in: Rebuild.
+	* src/Makefile.in: Rebuild.
+	* testsuite/Makefile.in: Rebuild.
+
 2011-07-21  Benjamin Kosnik  <bkoz@redhat.com>
 
 	* testsuite/ext/pb_ds/regression/tree_no_data_map_rand.cc: Move...
diff --git a/libstdc++-v3/Makefile.in b/libstdc++-v3/Makefile.in
index 3a6e9f24f9e07f2469d7bef1326d7a23431a4293..272c4eeea400a96922427e26872e65d412b9c67e 100644
--- a/libstdc++-v3/Makefile.in
+++ b/libstdc++-v3/Makefile.in
@@ -293,7 +293,7 @@ toolexeclibdir = $(glibcxx_toolexeclibdir)
 # These bits are all figured out from configure.  Look in acinclude.m4
 # or configure.ac to see how they are set.  See GLIBCXX_EXPORT_FLAGS.
 CONFIG_CXXFLAGS = \
-	$(SECTION_FLAGS) $(EXTRA_CXX_FLAGS)
+	$(SECTION_FLAGS) $(EXTRA_CXX_FLAGS) -frandom-seed=$@
 
 WARN_CXXFLAGS = \
 	$(WARN_FLAGS) $(WERROR) -fdiagnostics-show-location=once
diff --git a/libstdc++-v3/doc/Makefile.in b/libstdc++-v3/doc/Makefile.in
index db89253044b32eace2f5101c548167de196d8b55..40f00994249d28c13e53e18dc5b798c82cf72002 100644
--- a/libstdc++-v3/doc/Makefile.in
+++ b/libstdc++-v3/doc/Makefile.in
@@ -277,7 +277,7 @@ toolexeclibdir = $(glibcxx_toolexeclibdir)
 # These bits are all figured out from configure.  Look in acinclude.m4
 # or configure.ac to see how they are set.  See GLIBCXX_EXPORT_FLAGS.
 CONFIG_CXXFLAGS = \
-	$(SECTION_FLAGS) $(EXTRA_CXX_FLAGS)
+	$(SECTION_FLAGS) $(EXTRA_CXX_FLAGS) -frandom-seed=$@
 
 WARN_CXXFLAGS = \
 	$(WARN_FLAGS) $(WERROR) -fdiagnostics-show-location=once
diff --git a/libstdc++-v3/fragment.am b/libstdc++-v3/fragment.am
index d2065dc7bb219b1885c661710340edf4ec8fe21e..cae1ffd56f6b521f839c855f461c4cd68b4a4af5 100644
--- a/libstdc++-v3/fragment.am
+++ b/libstdc++-v3/fragment.am
@@ -16,7 +16,7 @@ toolexeclibdir = $(glibcxx_toolexeclibdir)
 # These bits are all figured out from configure.  Look in acinclude.m4
 # or configure.ac to see how they are set.  See GLIBCXX_EXPORT_FLAGS.
 CONFIG_CXXFLAGS = \
-	$(SECTION_FLAGS) $(EXTRA_CXX_FLAGS)
+	$(SECTION_FLAGS) $(EXTRA_CXX_FLAGS) -frandom-seed=$@
 WARN_CXXFLAGS = \
 	$(WARN_FLAGS) $(WERROR) -fdiagnostics-show-location=once
 
diff --git a/libstdc++-v3/include/Makefile.in b/libstdc++-v3/include/Makefile.in
index 65da567cf07283cedc1dd95b20c8987104096814..58dbfc42288c5a1185c6b59b4688cc5e402f7422 100644
--- a/libstdc++-v3/include/Makefile.in
+++ b/libstdc++-v3/include/Makefile.in
@@ -267,7 +267,7 @@ toolexeclibdir = $(glibcxx_toolexeclibdir)
 # These bits are all figured out from configure.  Look in acinclude.m4
 # or configure.ac to see how they are set.  See GLIBCXX_EXPORT_FLAGS.
 CONFIG_CXXFLAGS = \
-	$(SECTION_FLAGS) $(EXTRA_CXX_FLAGS)
+	$(SECTION_FLAGS) $(EXTRA_CXX_FLAGS) -frandom-seed=$@
 
 WARN_CXXFLAGS = \
 	$(WARN_FLAGS) $(WERROR) -fdiagnostics-show-location=once
diff --git a/libstdc++-v3/libsupc++/Makefile.in b/libstdc++-v3/libsupc++/Makefile.in
index 5e7651bb4552ff7977b46fd2f666baa92100c7f6..4c36c35e0bcbd53c9ef7059b0bf8d2ba07a08663 100644
--- a/libstdc++-v3/libsupc++/Makefile.in
+++ b/libstdc++-v3/libsupc++/Makefile.in
@@ -326,7 +326,7 @@ toolexeclibdir = $(glibcxx_toolexeclibdir)
 # These bits are all figured out from configure.  Look in acinclude.m4
 # or configure.ac to see how they are set.  See GLIBCXX_EXPORT_FLAGS.
 CONFIG_CXXFLAGS = \
-	$(SECTION_FLAGS) $(EXTRA_CXX_FLAGS)
+	$(SECTION_FLAGS) $(EXTRA_CXX_FLAGS) -frandom-seed=$@
 
 WARN_CXXFLAGS = \
 	$(WARN_FLAGS) $(WERROR) -fdiagnostics-show-location=once
diff --git a/libstdc++-v3/po/Makefile.in b/libstdc++-v3/po/Makefile.in
index 407e2821acbe5d483be741c28373b812b11a4784..09092677b04f4b3be2c46ddb3d529916a4468b21 100644
--- a/libstdc++-v3/po/Makefile.in
+++ b/libstdc++-v3/po/Makefile.in
@@ -267,7 +267,7 @@ toolexeclibdir = $(glibcxx_toolexeclibdir)
 # These bits are all figured out from configure.  Look in acinclude.m4
 # or configure.ac to see how they are set.  See GLIBCXX_EXPORT_FLAGS.
 CONFIG_CXXFLAGS = \
-	$(SECTION_FLAGS) $(EXTRA_CXX_FLAGS)
+	$(SECTION_FLAGS) $(EXTRA_CXX_FLAGS) -frandom-seed=$@
 
 WARN_CXXFLAGS = \
 	$(WARN_FLAGS) $(WERROR) -fdiagnostics-show-location=once
diff --git a/libstdc++-v3/python/Makefile.in b/libstdc++-v3/python/Makefile.in
index 4b7404039d15a73b99118beba755b2b17624b668..01bcddbe1c636297edbbe06637748a030644391e 100644
--- a/libstdc++-v3/python/Makefile.in
+++ b/libstdc++-v3/python/Makefile.in
@@ -291,7 +291,7 @@ toolexeclibdir = $(glibcxx_toolexeclibdir)
 # These bits are all figured out from configure.  Look in acinclude.m4
 # or configure.ac to see how they are set.  See GLIBCXX_EXPORT_FLAGS.
 CONFIG_CXXFLAGS = \
-	$(SECTION_FLAGS) $(EXTRA_CXX_FLAGS)
+	$(SECTION_FLAGS) $(EXTRA_CXX_FLAGS) -frandom-seed=$@
 
 WARN_CXXFLAGS = \
 	$(WARN_FLAGS) $(WERROR) -fdiagnostics-show-location=once
diff --git a/libstdc++-v3/src/Makefile.in b/libstdc++-v3/src/Makefile.in
index c8063b148082a1f79d5ec1f0e41018915d0fccf9..5d31fb20c41f9e493b345910c40a9aca5eaffc41 100644
--- a/libstdc++-v3/src/Makefile.in
+++ b/libstdc++-v3/src/Makefile.in
@@ -331,7 +331,7 @@ toolexeclibdir = $(glibcxx_toolexeclibdir)
 # These bits are all figured out from configure.  Look in acinclude.m4
 # or configure.ac to see how they are set.  See GLIBCXX_EXPORT_FLAGS.
 CONFIG_CXXFLAGS = \
-	$(SECTION_FLAGS) $(EXTRA_CXX_FLAGS)
+	$(SECTION_FLAGS) $(EXTRA_CXX_FLAGS) -frandom-seed=$@
 
 WARN_CXXFLAGS = \
 	$(WARN_FLAGS) $(WERROR) -fdiagnostics-show-location=once
diff --git a/libstdc++-v3/testsuite/Makefile.in b/libstdc++-v3/testsuite/Makefile.in
index f3f65946888bafdfbbb7f0ef27891818261f2b25..37e8a3cf675a10f594a80a8ab8b3344f2d9ace4f 100644
--- a/libstdc++-v3/testsuite/Makefile.in
+++ b/libstdc++-v3/testsuite/Makefile.in
@@ -270,7 +270,7 @@ toolexeclibdir = $(glibcxx_toolexeclibdir)
 # These bits are all figured out from configure.  Look in acinclude.m4
 # or configure.ac to see how they are set.  See GLIBCXX_EXPORT_FLAGS.
 CONFIG_CXXFLAGS = \
-	$(SECTION_FLAGS) $(EXTRA_CXX_FLAGS)
+	$(SECTION_FLAGS) $(EXTRA_CXX_FLAGS) -frandom-seed=$@
 
 WARN_CXXFLAGS = \
 	$(WARN_FLAGS) $(WERROR) -fdiagnostics-show-location=once