$(obj)/core.o: private rustc_target_flags = $(core-cfgs)
$(obj)/core.o: $(RUST_LIB_SRC)/core/src/lib.rs FORCE
+$(call if_changed_dep,rustc_library)
-ifneq ($(or $(CONFIG_X86_64),$(CONFIG_LOONGARCH)),)
+ifdef CONFIG_X86_64
$(obj)/core.o: scripts/target.json
endif