arch/riscv/include/uapi/asm/Kbuild - linux - Git at Google

 # SPDX-License-Identifier: GPL-2.0
 syscall-y += unistd_32.h
 syscall-y += unistd_64.h
	# SPDX-License-Identifier: GPL-2.0
	syscall-y += unistd_32.h
	syscall-y += unistd_64.h