+isa-y := any
+isa-$(CONFIG_CPU_SH2) := sh2
+isa-$(CONFIG_CPU_SH3) := sh3
+isa-$(CONFIG_CPU_SH4) := sh4
+isa-$(CONFIG_CPU_SH4A) := sh4a
+isa-$(CONFIG_CPU_SH2A) := sh2a
+
+isa-$(CONFIG_SH_DSP) := $(isa-y)-dsp
+
+ifndef CONFIG_MMU
+isa-y := $(isa-y)-nommu
+endif
+
+ifndef CONFIG_SH_FPU
+isa-y := $(isa-y)-nofpu
+endif
+
+cflags-y += $(call as-option,-Wa$(comma)-isa=$(isa-y),)
+