47 lines
1.5 KiB
CMake
47 lines
1.5 KiB
CMake
# SPDX-License-Identifier: Apache-2.0
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#
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# Copyright (c) 2022, Nordic Semiconductor ASA
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# Configure ARCH settings based on board directory and arch root.
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#
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# This CMake module will set the following variables in the build system based
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# on board directory and arch root.
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#
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# If no implementation is available for the current arch an error will be raised.
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#
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# Outcome:
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# The following variables will be defined when this CMake module completes:
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#
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# - ARCH: Name of the arch in use.
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# - ARCH_DIR: Directory containing the arch implementation.
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# - ARCH_ROOT: ARCH_ROOT with ZEPHYR_BASE appended
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#
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# Variable dependencies:
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# - ARCH_ROOT: CMake list of arch roots containing arch implementations
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# - BOARD_DIR: CMake variable specifying the directory of the selected BOARD
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#
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# Variables set by this module and not mentioned above are considered internal
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# use only and may be removed, renamed, or re-purposed without prior notice.
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include_guard(GLOBAL)
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# 'ARCH_ROOT' is a prioritized list of directories where archs may be
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# found. It always includes ${ZEPHYR_BASE} at the lowest priority.
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list(APPEND ARCH_ROOT ${ZEPHYR_BASE})
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cmake_path(GET BOARD_DIR PARENT_PATH board_arch_dir)
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cmake_path(GET board_arch_dir FILENAME ARCH)
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foreach(root ${ARCH_ROOT})
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if(EXISTS ${root}/arch/${ARCH}/CMakeLists.txt)
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set(ARCH_DIR ${root}/arch)
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break()
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endif()
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endforeach()
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if(NOT ARCH_DIR)
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message(FATAL_ERROR "Could not find ARCH=${ARCH} for BOARD=${BOARD}, \
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please check your installation. ARCH roots searched: \n\
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${ARCH_ROOT}")
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endif()
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