--- Makefile.orig	2015-09-03 20:26:09 UTC
+++ Makefile
@@ -27,7 +27,7 @@ install:	$(BUILD) $(OTHER)
 
 clean:
 	$(RM) -f core *.o *~ $(BUILD)
-	cd ky00te.dir && make clean
+	cd ky00te.dir && $(MAKE_ENV) $(MAKE) clean
 
 .SUFFIXES: .l
 
@@ -40,7 +40,7 @@ clean:
 .SUFFIXES: .dir
 
 .dir:
-	cd $<; make
+	cd $<; $(MAKE_ENV) $(MAKE)
 
 nethackify: nethackify.c
 scramble: scramble.c