arch/riscv32/core/Makefile - third_party/github/zephyrproject-rtos/zephyr - Git at Google

 ccflags-y += -I$(srctree)/kernel/unified/include
 ccflags-y +=-I$(srctree)/arch/$(ARCH)/include

 obj-y += isr.o reset.o fatal.o irq_manage.o \
 	prep_c.o cpu_idle.o swap.o thread.o irq_offload.o
	ccflags-y += -I$(srctree)/kernel/unified/include
	ccflags-y +=-I$(srctree)/arch/$(ARCH)/include

	obj-y += isr.o reset.o fatal.o irq_manage.o \
	prep_c.o cpu_idle.o swap.o thread.o irq_offload.o