-mips-cflags := "$(cflags-y)"
-cflags-$(CONFIG_CPU_HAS_SMARTMIPS) += $(call cc-option,$(mips-cflags),-msmartmips) -Wa,--no-warn
-cflags-$(CONFIG_CPU_MICROMIPS) += $(call cc-option,$(mips-cflags),-mmicromips)
+mips-cflags := $(cflags-y)
+ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
+smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
+cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
+endif
+ifeq ($(CONFIG_CPU_MICROMIPS),y)
+micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
+cflags-$(micromips-ase) += -mmicromips
+endif