CONFIG_slc2 ?= n
#The CONFIG_foo vars are only interpreted if $(config) is unset.
-ifeq ($(config),undef)
-config := $(foreach app,$(AVAILABLE_APPS),$(if $(findstring $(CONFIG_$(app)),y yes t true Y YES T TRUE),$(app)))
-endif
+#ifeq ($(config),undef)
+config += $(foreach app,$(AVAILABLE_APPS),$(if $(findstring $(CONFIG_$(app)),y yes t true Y YES T TRUE),$(app)))
+#endif