Depend setobject.o and dictobject.o on stringlib/eq.h.
diff --git a/Makefile.pre.in b/Makefile.pre.in
index 78b85f6..a2b14a9 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -641,6 +641,9 @@
 Objects/unicodeobject.o: $(srcdir)/Objects/unicodeobject.c \
 				$(BYTESTR_DEPS)
 
+Objects/dictobject.o: $(srcdir)/Objects/stringlib/eq.h
+Objects/setobject.o: $(srcdir)/Objects/stringlib/eq.h
+
 $(OPCODETARGETS_H): $(OPCODETARGETGEN_FILES)
 	$(OPCODETARGETGEN) $(OPCODETARGETS_H)