Issue #13217: add missing header dependencies in the Makefile for unicodeobject.o.
Patch by John O'Connor.
diff --git a/Makefile.pre.in b/Makefile.pre.in
index 896a08e..df1c0e7 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -640,14 +640,22 @@
$(srcdir)/Objects/stringlib/stringdefs.h \
$(srcdir)/Objects/stringlib/transmogrify.h \
$(srcdir)/Objects/stringlib/unicodedefs.h \
- $(srcdir)/Objects/stringlib/localeutil.h
+ $(srcdir)/Objects/stringlib/localeutil.h \
+ $(srcdir)/Objects/stringlib/undef.h
+
+UNICODE_DEPS = $(BYTESTR_DEPS) \
+ $(srcdir)/Objects/stringlib/asciilib.h \
+ $(srcdir)/Objects/stringlib/ucs1lib.h \
+ $(srcdir)/Objects/stringlib/ucs2lib.h \
+ $(srcdir)/Objects/stringlib/ucs4lib.h \
+ $(srcdir)/Objects/stringlib/unicode_format.h \
+ $(srcdir)/Objects/stringlib/unicodedefs.h
Objects/bytesobject.o: $(srcdir)/Objects/bytesobject.c $(BYTESTR_DEPS)
Objects/bytearrayobject.o: $(srcdir)/Objects/bytearrayobject.c $(BYTESTR_DEPS)
-Objects/unicodeobject.o: $(srcdir)/Objects/unicodeobject.c \
- $(BYTESTR_DEPS) $(srcdir)/Objects/stringlib/unicode_format.h
+Objects/unicodeobject.o: $(srcdir)/Objects/unicodeobject.c $(UNICODE_DEPS)
Objects/dictobject.o: $(srcdir)/Objects/stringlib/eq.h
Objects/setobject.o: $(srcdir)/Objects/stringlib/eq.h