boards/riscv/nrf54h20pdk_nrf54h20/pre_dt_board.cmake - third_party/github/zephyrproject-rtos/zephyr - Git at Google

 # Copyright (c) 2024 Nordic Semiconductor ASA
 # SPDX-License-Identifier: Apache-2.0

 # Allow common DTS files to be included from the other board directory.
 # To be removed after HWMv2 (#51831), once both directories can be merged into one.
 string(REGEX REPLACE "/riscv/(.*$)" "/arm/\\1" BOARD_DIR_ARM "${BOARD_DIR}")
 list(APPEND DTS_EXTRA_CPPFLAGS -isystem "${BOARD_DIR_ARM}")
	# Copyright (c) 2024 Nordic Semiconductor ASA
	# SPDX-License-Identifier: Apache-2.0

	# Allow common DTS files to be included from the other board directory.
	# To be removed after HWMv2 (#51831), once both directories can be merged into one.
	string(REGEX REPLACE "/riscv/(.*$)" "/arm/\\1" BOARD_DIR_ARM "${BOARD_DIR}")
	list(APPEND DTS_EXTRA_CPPFLAGS -isystem "${BOARD_DIR_ARM}")