134 lines
5.4 KiB
CMake
134 lines
5.4 KiB
CMake
# SPDX-License-Identifier: Apache-2.0
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#
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# Copyright (c) 2022-2023, Nordic Semiconductor ASA
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# FindZephyr-sdk module for supporting module search mode of Zephyr SDK.
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#
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# Its purpose is to allow the find_package basic signature mode to lookup Zephyr
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# SDK and based on user / environment settings of selected toolchain decide if
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# the Zephyr SDK CMake package should be loaded.
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#
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# It extends the Zephyr-sdk CMake package by providing more flexibility in when
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# the Zephyr SDK is loaded and loads additional host tools from the Zephyr SDK.
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#
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# The module defines the following variables:
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#
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# 'ZEPHYR_SDK_INSTALL_DIR'
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# Install location of the Zephyr SDK
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#
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# 'ZEPHYR_TOOLCHAIN_VARIANT'
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# Zephyr toolchain variant to use if not defined already.
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#
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# 'Zephyr-sdk_FOUND'
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# True if the Zephyr SDK was found.
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# Set internal variables if set in environment.
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zephyr_get(ZEPHYR_TOOLCHAIN_VARIANT)
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zephyr_get(ZEPHYR_SDK_INSTALL_DIR)
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# Load Zephyr SDK Toolchain.
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# There are three scenarios where Zephyr SDK should be looked up:
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# 1) Zephyr specified as toolchain (ZEPHYR_SDK_INSTALL_DIR still used if defined)
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# 2) No toolchain specified == Default to Zephyr toolchain
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# Until we completely deprecate it
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if(("zephyr" STREQUAL ${ZEPHYR_TOOLCHAIN_VARIANT}) OR
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(NOT DEFINED ZEPHYR_TOOLCHAIN_VARIANT) OR
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(DEFINED ZEPHYR_SDK_INSTALL_DIR) OR
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(Zephyr-sdk_FIND_REQUIRED))
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# No toolchain was specified, so inform user that we will be searching.
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if (NOT DEFINED ZEPHYR_SDK_INSTALL_DIR AND
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NOT DEFINED ZEPHYR_TOOLCHAIN_VARIANT)
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message(STATUS "ZEPHYR_TOOLCHAIN_VARIANT not set, trying to locate Zephyr SDK")
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endif()
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# This ensure packages are sorted in descending order.
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SET(CMAKE_FIND_PACKAGE_SORT_DIRECTION_CURRENT ${CMAKE_FIND_PACKAGE_SORT_DIRECTION})
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SET(CMAKE_FIND_PACKAGE_SORT_ORDER_CURRENT ${CMAKE_FIND_PACKAGE_SORT_ORDER})
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SET(CMAKE_FIND_PACKAGE_SORT_DIRECTION DEC)
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SET(CMAKE_FIND_PACKAGE_SORT_ORDER NATURAL)
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if(DEFINED ZEPHYR_SDK_INSTALL_DIR)
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# The Zephyr SDK will automatically set the toolchain variant.
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# To support Zephyr SDK tools (DTC, and other tools) with 3rd party toolchains
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# then we keep track of current toolchain variant.
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set(ZEPHYR_CURRENT_TOOLCHAIN_VARIANT ${ZEPHYR_TOOLCHAIN_VARIANT})
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find_package(Zephyr-sdk ${Zephyr-sdk_FIND_VERSION}
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REQUIRED QUIET CONFIG HINTS ${ZEPHYR_SDK_INSTALL_DIR}
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)
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if(DEFINED ZEPHYR_CURRENT_TOOLCHAIN_VARIANT)
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set(ZEPHYR_TOOLCHAIN_VARIANT ${ZEPHYR_CURRENT_TOOLCHAIN_VARIANT})
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endif()
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else()
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# Paths that are used to find installed Zephyr SDK versions
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SET(zephyr_sdk_search_paths
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/usr
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/usr/local
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/opt
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$ENV{HOME}
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$ENV{HOME}/.local
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$ENV{HOME}/.local/opt
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$ENV{HOME}/bin)
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# Search for Zephyr SDK version 0.0.0 which does not exist, this is needed to
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# return a list of compatible versions and find the best suited version that
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# is available.
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find_package(Zephyr-sdk 0.0.0 EXACT QUIET CONFIG PATHS ${zephyr_sdk_search_paths})
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# Remove duplicate entries and sort naturally in descending order.
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set(zephyr_sdk_found_versions ${Zephyr-sdk_CONSIDERED_VERSIONS})
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set(zephyr_sdk_found_configs ${Zephyr-sdk_CONSIDERED_CONFIGS})
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list(REMOVE_DUPLICATES Zephyr-sdk_CONSIDERED_VERSIONS)
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list(SORT Zephyr-sdk_CONSIDERED_VERSIONS COMPARE NATURAL ORDER DESCENDING)
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# Loop over each found Zepher SDK version until one is found that is compatible.
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foreach(zephyr_sdk_candidate ${Zephyr-sdk_CONSIDERED_VERSIONS})
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if("${zephyr_sdk_candidate}" VERSION_GREATER_EQUAL "${Zephyr-sdk_FIND_VERSION}")
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# Find the path for the current version being checked and get the directory
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# of the Zephyr SDK so it can be checked.
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list(FIND zephyr_sdk_found_versions ${zephyr_sdk_candidate} zephyr_sdk_current_index)
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list(GET zephyr_sdk_found_configs ${zephyr_sdk_current_index} zephyr_sdk_current_check_path)
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get_filename_component(zephyr_sdk_current_check_path ${zephyr_sdk_current_check_path} DIRECTORY)
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# Then see if this version is compatible.
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find_package(Zephyr-sdk ${Zephyr-sdk_FIND_VERSION} QUIET CONFIG PATHS ${zephyr_sdk_current_check_path} NO_DEFAULT_PATH)
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if (${Zephyr-sdk_FOUND})
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# A compatible version of the Zephyr SDK has been found which is the highest
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# supported version, exit.
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break()
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endif()
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endif()
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endforeach()
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if (NOT ${Zephyr-sdk_FOUND})
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# This means no compatible Zephyr SDK versions were found, set the version
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# back to the minimum version so that it is displayed in the error text.
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find_package(Zephyr-sdk ${Zephyr-sdk_FIND_VERSION} REQUIRED CONFIG PATHS ${zephyr_sdk_search_paths})
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endif()
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endif()
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SET(CMAKE_FIND_PACKAGE_SORT_DIRECTION ${CMAKE_FIND_PACKAGE_SORT_DIRECTION_CURRENT})
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SET(CMAKE_FIND_PACKAGE_SORT_ORDER ${CMAKE_FIND_PACKAGE_SORT_ORDER_CURRENT})
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endif()
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# Clean up temp variables
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set(zephyr_sdk_search_paths)
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set(zephyr_sdk_found_versions)
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set(zephyr_sdk_found_configs)
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set(zephyr_sdk_current_index)
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set(zephyr_sdk_current_check_path)
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if(DEFINED ZEPHYR_SDK_INSTALL_DIR)
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# Cache the Zephyr SDK install dir.
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set(ZEPHYR_SDK_INSTALL_DIR ${ZEPHYR_SDK_INSTALL_DIR} CACHE PATH "Zephyr SDK install directory")
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endif()
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if(Zephyr-sdk_FOUND)
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include(${ZEPHYR_SDK_INSTALL_DIR}/cmake/zephyr/host-tools.cmake)
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message(STATUS "Found host-tools: zephyr ${SDK_VERSION} (${ZEPHYR_SDK_INSTALL_DIR})")
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endif()
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