88ae9cbb9d
Enhance sysbuild controlled configurations. The current scheme of passing settings using `-D` on the CMake invocation is vulnerable to quoting and lists. With `zephyr_get()` in place as a uniform way of handling user controlled settings (CMake cache / environment / CMake local variable) we have a mechanism in place for a cleaner handling of sysbuild controlled settings. This improves the robustness of variable passing and add the same cleans up and simplifies the logic in sysbuild. The Kconfig Zephyr CMake module has been updated accordingly so that CONFIG settings are taken from the sysbuild shadow cache when sysbuild is used as higher level build system. Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
41 lines
1.7 KiB
CMake
41 lines
1.7 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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# Setup basic settings for a Zephyr project.
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#
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# Basic settings are:
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# - sysbuild defined configuration settings
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#
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# Details for sysbuild settings:
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#
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# Sysbuild is a higher level build system used by Zephyr.
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# Sysbuild allows users to build multiple samples for a given system.
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#
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# For this to work, sysbuild manages other Zephyr CMake build systems by setting
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# dedicated build variables.
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# This CMake modules loads the sysbuild cache variables as target properties on
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# a sysbuild_cache target.
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#
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# This ensures that qoutes and lists are correctly preserved.
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include_guard(GLOBAL)
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if(SYSBUILD)
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add_custom_target(sysbuild_cache)
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file(STRINGS "${SYSBUILD_CACHE}" sysbuild_cache_strings)
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foreach(str ${sysbuild_cache_strings})
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# Using a regex for matching whole 'VAR_NAME:TYPE=VALUE' will strip semi-colons
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# thus resulting in lists to become strings.
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# Therefore we first fetch VAR_NAME and TYPE, and afterwards extract
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# remaining of string into a value that populates the property.
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# This method ensures that both quoted values and ;-separated list stays intact.
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string(REGEX MATCH "([^:]*):([^=]*)=" variable_identifier ${str})
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string(LENGTH ${variable_identifier} variable_identifier_length)
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string(SUBSTRING "${str}" ${variable_identifier_length} -1 variable_value)
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set_property(TARGET sysbuild_cache APPEND PROPERTY "SYSBUILD_CACHE:VARIABLES" "${CMAKE_MATCH_1}")
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set_property(TARGET sysbuild_cache PROPERTY "${CMAKE_MATCH_1}:TYPE" "${CMAKE_MATCH_2}")
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set_property(TARGET sysbuild_cache PROPERTY "${CMAKE_MATCH_1}" "${variable_value}")
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endforeach()
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endif()
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