diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a87f0efcd8e..2a924cc9f62 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2001-09-05  David S. Miller  <davem@redhat.com>
+
+	* config/sparc/linux.h: Set CPLUSPLUS_CPP_SPEC.
+	* config/sparc/linux64.h: Likewise.
+
 2001-09-05  Andreas Jaeger  <aj@suse.de>
 
 	* doc/invoke.texi (i386 Options): -mwide-multiply is not
diff --git a/gcc/config/sparc/linux.h b/gcc/config/sparc/linux.h
index f85409b66c9..44aa462ca61 100644
--- a/gcc/config/sparc/linux.h
+++ b/gcc/config/sparc/linux.h
@@ -70,6 +70,10 @@ Boston, MA 02111-1307, USA.  */
 %{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \
 "
 
+/* The GNU C++ standard library requires that these macros be defined.  */
+#undef CPLUSPLUS_CPP_SPEC
+#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
+
 #undef TARGET_VERSION
 #define TARGET_VERSION fprintf (stderr, " (sparc GNU/Linux with ELF)");
 
diff --git a/gcc/config/sparc/linux64.h b/gcc/config/sparc/linux64.h
index d72f57f08ce..675b81d9c03 100644
--- a/gcc/config/sparc/linux64.h
+++ b/gcc/config/sparc/linux64.h
@@ -124,6 +124,10 @@ Boston, MA 02111-1307, USA.  */
 
 #endif
 
+/* The GNU C++ standard library requires that these macros be defined.  */
+#undef CPLUSPLUS_CPP_SPEC
+#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
+
 #undef TARGET_VERSION
 #define TARGET_VERSION fprintf (stderr, " (sparc64 GNU/Linux with ELF)");