diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8fea68aca44..ad9c7deaf7f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2001-06-05  David O'Brien  <obrien@FreeBSD.org>
+
+	* elfos.h (USING_ELFOS_H):  Identify the use of elfos.h in the same
+	way svr4.h does.
+
 2001-06-05  Pascal Obry  <obry@act-europe.fr>
 
 	* configure.in: Quote $enable_win32_registry in case the value has
diff --git a/gcc/config/elfos.h b/gcc/config/elfos.h
index e7b9b811121..f3abe469b81 100644
--- a/gcc/config/elfos.h
+++ b/gcc/config/elfos.h
@@ -21,6 +21,11 @@ along with GNU CC; see the file COPYING.  If not, write to
 the Free Software Foundation, 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, USA.  */
 
+
+/* Define a symbol indicating that we are using elfos.h.
+   Some CPU specific configuration files use this.  */
+#define USING_ELFOS_H
+
 /* The prefix to add to user-visible assembler symbols.
 
    For ELF systems the convention is *not* to prepend a leading