diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7774d790acf..f6145f63b99 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+Sat Oct 16 11:19:52 1999  Richard Henderson  <rth@cygnus.com>
+
+	* i386/t-cygwin (winnt.o): Depend on RTL_H and TREE_H.
+	* i386/t-winnt: Likewise.
+
+Sat Oct 16 11:11:54 1999  Richard Henderson  <rth@cygnus.com>
+
+	* ggc-page.c (init_ggc): Work around SunOS unaligned mmap bug.
+
 1999-10-16  Manfred Hollstein  <mhollstein@cygnus.com>
 
 	* Makefile.in (LANGUAGES): Omit "proto".
diff --git a/gcc/config/i386/t-cygwin b/gcc/config/i386/t-cygwin
index 175f66be6f3..2787961d235 100644
--- a/gcc/config/i386/t-cygwin
+++ b/gcc/config/i386/t-cygwin
@@ -12,5 +12,5 @@ LIMITS_H_TEST = true
 # first.
 LIBGCC2_INCLUDES = -I$(srcdir)/../winsup/include
 
-winnt.o: $(srcdir)/config/i386/winnt.c
+winnt.o: $(srcdir)/config/i386/winnt.c $(RTL_H) $(TREE_H)
 	$(CC) -c $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) $(srcdir)/config/i386/winnt.c
diff --git a/gcc/config/i386/t-winnt b/gcc/config/i386/t-winnt
index 1e3557c1822..50e0566b3df 100644
--- a/gcc/config/i386/t-winnt
+++ b/gcc/config/i386/t-winnt
@@ -1,4 +1,4 @@
-winnt.o: $(srcdir)/config/i386/winnt.c
+winnt.o: $(srcdir)/config/i386/winnt.c $(RTL_H) $(TREE_H)
 	$(CC) -c $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) $(srcdir)/config/i386/winnt.c
 oldnames.o: $(srcdir)/config/winnt/oldnames.c
 	$(CC) -c $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) $(srcdir)/config/winnt/oldnames.c