diff -rupN Python-2.7.15/Makefile.pre.in Python-2.7.15-new/Makefile.pre.in
--- Python-2.7.15/Makefile.pre.in	2018-05-02 17:23:34.436731431 +0200
+++ Python-2.7.15-new/Makefile.pre.in	2018-05-02 17:23:36.807731300 +0200
@@ -1086,6 +1086,7 @@ LIBSUBDIRS=	lib-tk lib-tk/test lib-tk/te
 		distutils distutils/command distutils/tests $(XMLLIBSUBDIRS) \
 		multiprocessing multiprocessing/dummy \
 		unittest unittest/test \
+		msilib \
 		lib-old \
 		curses pydoc_data $(MACHDEPS)
 libinstall:	build_all $(srcdir)/Lib/$(PLATDIR) $(srcdir)/Modules/xxmodule.c