diff --git a/make/rules.mk b/make/rules.mk
index 8596c4f3..f8ae74c6 100644
--- a/make/rules.mk
+++ b/make/rules.mk
@@ -10,11 +10,12 @@ all: $(LOCAL_TARGETS) $(ALL)
 echo_all:
 	@echo "$(ALL)"
 
-all.done: $(PREREQ_DONE) all
+all.done: $(PREREQ_DONE)
+	make -$(MAKEFLAGS) all
 	touch $@
 
 %.done: 
-	make -C $(shell dirname $@) `basename $@`
+	make -$(MAKEFLAGS) -C $(shell dirname $@) `basename $@`
 
 $(LIBDIR):
 	mkdir -p $@
@@ -84,7 +85,7 @@ endif
 	install -m 755 $@ $(BUILD_BINDIR)
 
 $(LIBS):
-	make -C $(LIBDIR) all
+	make -$(MAKEFLAGS) -C $(LIBDIR) all
 
 $(INSTALL_HDRDIR) $(INSTALL_BINDIR) $(INSTALL_LIBDIR) $(INSTALL_MKDIR):
 	$(INSTALL) -d -g $(MAKEGROUP) -o $(MAKEOWNER) -m 755 $@
@@ -210,7 +211,7 @@ vcdistclean:
 	rm -rf *.plg *.opt *.ncb Debug *.exe dist *.ilk
 
 prereqclean:
-	for dir in $(PREREQ_DIR); do make -C $$dir clean; done
+	for dir in $(PREREQ_DIR); do make -$(MAKEFLAGS) -C $$dir clean; done
 
 profclean:
 	rm -f *.da *.bb *.bbg *.gcov