diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index bdf1d3ae8b5..79cfc049a2a 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,9 @@
+2010-09-02  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR libstdc++/40974
+	* include/Makefile.am: Add -nostdinc++ to PCHFLAGS.
+	* include/Makefile.in: Regenerate.
+
 2010-09-01  Christopher Yeleighton  <giecrilj@stegny.2a.pl>
 	    Paolo Carlini  <paolo.carlini@oracle.com>
 
diff --git a/libstdc++-v3/include/Makefile.am b/libstdc++-v3/include/Makefile.am
index 6a371a4f8fa..3b9c5519d4a 100644
--- a/libstdc++-v3/include/Makefile.am
+++ b/libstdc++-v3/include/Makefile.am
@@ -904,7 +904,7 @@ pch_output_dirs = \
 	${pch1_output_builddir} ${pch2_output_builddir} ${pch3_output_builddir}
 pch_output_anchors = \
 	${pch1_output_anchor} ${pch2_output_anchor} ${pch3_output_anchor}
-PCHFLAGS=-x c++-header $(CXXFLAGS)
+PCHFLAGS=-x c++-header -nostdinc++ $(CXXFLAGS)
 if GLIBCXX_BUILD_PCH
 pch_build = ${pch_output}
 else
diff --git a/libstdc++-v3/include/Makefile.in b/libstdc++-v3/include/Makefile.in
index 1aa641a9c86..d32efa8e7fd 100644
--- a/libstdc++-v3/include/Makefile.in
+++ b/libstdc++-v3/include/Makefile.in
@@ -1130,7 +1130,7 @@ pch_output_dirs = \
 pch_output_anchors = \
 	${pch1_output_anchor} ${pch2_output_anchor} ${pch3_output_anchor}
 
-PCHFLAGS = -x c++-header $(CXXFLAGS)
+PCHFLAGS = -x c++-header -nostdinc++ $(CXXFLAGS)
 @GLIBCXX_BUILD_PCH_FALSE@pch_build = 
 @GLIBCXX_BUILD_PCH_TRUE@pch_build = ${pch_output}