obj-perf := $(abspath $(obj-perf))/
endif
-$(shell echo -n > .config-detected)
-detected = $(shell echo "$(1)=y" >> .config-detected)
-detected_var = $(shell echo "$(1)=$($(1))" >> .config-detected)
+$(shell echo -n > $(OUTPUT).config-detected)
+detected = $(shell echo "$(1)=y" >> $(OUTPUT).config-detected)
+detected_var = $(shell echo "$(1)=$($(1))" >> $(OUTPUT).config-detected)
CFLAGS := $(EXTRA_CFLAGS) $(EXTRA_WARNINGS)