diff -ruN stepmake/stepmake/c++-rules.make lilypond-2.7.11/stepmake/stepmake/c++-rules.make
--- stepmake/stepmake/c++-rules.make 2005-10-02 09:14:45.000000000 -0700
+++ stepmake/stepmake/c++-rules.make 2005-10-02 09:15:10.000000000 -0700
-@@ -26,6 +26,7 @@
+@@ -17,6 +17,7 @@
$(outdir)/%.cc: %.ll
- $(FLEX) -Cfe -p -p -o$@ $<
+ $(FLEX) -Cfe -p -p -o$@ $<
+ perl -i.bak -pe 's/^class istream;/#include <iostream>;\nusing namespace std;/' $@
$(outdir)/%-rc.o: $(outdir)/%.rc