--- /dev/null
+--- Makefile 2018-06-12 16:46:58.209271869 +1000
++++ ../../plex2.git/flex-2.6.4/src/Makefile 2018-06-12 15:05:32.263286067 +1000
+@@ -1423,9 +1423,13 @@
+
+ .l.c:
+ $(AM_V_LEX)$(am__skiplex) $(SHELL) $(YLWRAP) $< $(LEX_OUTPUT_ROOT).c $@ -- $(LEXCOMPILE)
++ cp $@ $@.orig
++ patch $@ <$@.patch
+
+ .y.c:
+ $(AM_V_YACC)$(am__skipyacc) $(SHELL) $(YLWRAP) $< y.tab.c $@ y.tab.h `echo $@ | $(am__yacc_c2h)` y.output $*.output -- $(YACCCOMPILE)
++ cp $@ $@.orig
++ patch $@ <$@.patch
+
+ mostlyclean-libtool:
+ -rm -f *.lo