diff --git a/debian/rules.real b/debian/rules.real
index 842571c94..b5eb3c0cd 100644
--- a/debian/rules.real
+++ b/debian/rules.real
@@ -120,6 +120,7 @@ $(STAMPS_DIR)/setup-$(ARCH)-$(SUBARCH)-$(FLAVOUR)-$(TYPE): SOURCE_DIR=$(BUILD_DI
 $(STAMPS_DIR)/setup-$(ARCH)-$(SUBARCH)-$(FLAVOUR)-$(TYPE): DIR=$(BUILD_DIR)/build-$(ARCH)-$(SUBARCH)-$(FLAVOUR)
 $(STAMPS_DIR)/setup-$(ARCH)-$(SUBARCH)-$(FLAVOUR)-$(TYPE): $(BUILD_DIR)/config.$(ARCH)-$(SUBARCH)-$(FLAVOUR) $(STAMPS_DIR)/source-$(ARCH)-$(SUBARCH)
 
+# TODO: Should we set CROSS_COMPILE always?
 define SETUP_DIR
 	rm -rf '$(DIR)'
 	cp -al '$(SOURCE_DIR)' '$(DIR)'