diff --git a/sim/ppc/ChangeLog b/sim/ppc/ChangeLog
index 075ff3c732..83c76ccce1 100644
--- a/sim/ppc/ChangeLog
+++ b/sim/ppc/ChangeLog
@@ -1,3 +1,8 @@
+Tue Feb 11 13:49:10 1997  Michael Meissner  <meissner@tiktok.cygnus.com>
+
+	* Makefile.in (callback.o): Define HAVE_CONFIG_H, so callback.c
+	includes our config.h.
+
 Tue Feb  4 13:42:59 1997  Doug Evans  <dje@canuck.cygnus.com>
 
 	* configure.in: Fix typo in test for callback.c.
diff --git a/sim/ppc/Makefile.in b/sim/ppc/Makefile.in
index 365164e27c..46644b284f 100644
--- a/sim/ppc/Makefile.in
+++ b/sim/ppc/Makefile.in
@@ -403,8 +403,8 @@ targ-map.c: Makefile gentmap $(srcdir)/../../move-if-change
 	./gentmap -c > tmp-map.c
 	$(srcdir)/../../move-if-change tmp-map.c targ-map.c
 
-callback.o: ../common/callback.c targ-vals.h
-	$(CC) -c $(STD_CFLAGS) $<
+callback.o: ../common/callback.c targ-vals.h config.h
+	$(CC) -c $(STD_CFLAGS) -DHAVE_CONFIG_H $<
 
 targ-map.o: targ-map.c targ-vals.h