diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 332922211be..c2adbce796a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2000-01-24  Geoffrey Keating  <geoffk@cygnus.com>
+
+	* genoutput.c (output_prologue): Include ggc.h in generated
+	files.
+	* Makefile.in (insn-output.o): Depends on ggc.h.
+
 2000-01-27  Ian Dall  <ian@sibyl.beware.dropbear.id.au>
 	    Hans-Peter Nilsson  <hp@bitrange.com>
 
diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index fdf800a5d09..22ddebcc2f8 100644
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -1765,9 +1765,9 @@ s-attrtab : $(md_file) genattrtab $(srcdir)/move-if-change
 	$(SHELL) $(srcdir)/move-if-change tmp-attrtab.c insn-attrtab.c
 	touch s-attrtab
 
-insn-output.o : insn-output.c $(CONFIG_H) $(RTL_H) $(REGS_H) real.h conditions.h \
-    hard-reg-set.h insn-config.h insn-flags.h insn-attr.h output.h $(RECOG_H) \
-    function.h insn-codes.h system.h toplev.h flags.h
+insn-output.o : insn-output.c $(CONFIG_H) $(RTL_H) ggc.h $(REGS_H) real.h \
+    conditions.h hard-reg-set.h insn-config.h insn-flags.h insn-attr.h \
+    output.h $(RECOG_H) function.h insn-codes.h system.h toplev.h flags.h
 	$(CC) $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) -c insn-output.c
 
 insn-output.c: s-output ; @true
diff --git a/gcc/genoutput.c b/gcc/genoutput.c
index 348e9ae6a48..5fd472de64c 100644
--- a/gcc/genoutput.c
+++ b/gcc/genoutput.c
@@ -225,6 +225,7 @@ from the machine description file `md'.  */\n\n");
   printf ("#include \"config.h\"\n");
   printf ("#include \"system.h\"\n");
   printf ("#include \"flags.h\"\n");
+  printf ("#include \"ggc.h\"\n");
   printf ("#include \"rtl.h\"\n");
   printf ("#include \"tm_p.h\"\n");
   printf ("#include \"function.h\"\n");