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# The purpose of this file is to verify that required variables has been
# defined for proper toolchain use.
#
# It also offers the possibility to verify that the selected toolchain matches
# a specific version.
# Currently only when using the Zephyr SDK the version is verified, but other
# other version verification for other toolchains can be added as needed.
#
# This file can also be executed in script mode so that it can be used in other
# places, such as python scripts.
#
# When invoked as a script with -P:
# cmake [options] -P verify-toolchain.cmake
#
# it takes the following arguments:
# FORMAT=json: Print the output as a json formatted string, useful for Python
include_guard(GLOBAL)
# This is the minimum required Zephyr-SDK version which supports CMake package
set(TOOLCHAIN_ZEPHYR_MINIMUM_REQUIRED_VERSION 0.13.1)
# Set internal variables if set in environment.
if(NOT DEFINED ZEPHYR_TOOLCHAIN_VARIANT)
set(ZEPHYR_TOOLCHAIN_VARIANT $ENV{ZEPHYR_TOOLCHAIN_VARIANT})
endif()
if(NOT DEFINED ZEPHYR_SDK_INSTALL_DIR)
set(ZEPHYR_SDK_INSTALL_DIR $ENV{ZEPHYR_SDK_INSTALL_DIR})
endif()
# Pick host system's toolchain if we are targeting posix
if("${ARCH}" STREQUAL "posix")
if(NOT "${ZEPHYR_TOOLCHAIN_VARIANT}" STREQUAL "llvm")
set(ZEPHYR_TOOLCHAIN_VARIANT "host")
endif()
return()
endif()
# Keep XCC_USE_CLANG behaviour for a while.
if ("${ZEPHYR_TOOLCHAIN_VARIANT}" STREQUAL "xcc"
AND "$ENV{XCC_USE_CLANG}" STREQUAL "1")
set(ZEPHYR_TOOLCHAIN_VARIANT xcc-clang)
message(STATUS "XCC_USE_CLANG is deprecated. Please set ZEPHYR_TOOLCHAIN_VARIANT to 'xcc-clang'")
endif()
if(NOT ZEPHYR_TOOLCHAIN_VARIANT AND
(CROSS_COMPILE OR (DEFINED ENV{CROSS_COMPILE})))
set(ZEPHYR_TOOLCHAIN_VARIANT cross-compile)
endif()
# Verify Zephyr SDK Toolchain.
# There are three scenarios where Zephyr SDK should be looked up:
# 1) Zephyr specified as toolchain (ZEPHYR_SDK_INSTALL_DIR still used if defined)
# 2) No toolchain specified == Default to Zephyr toolchain
# Until we completely deprecate it
if(("zephyr" STREQUAL ${ZEPHYR_TOOLCHAIN_VARIANT}) OR
(NOT DEFINED ZEPHYR_TOOLCHAIN_VARIANT) OR
(DEFINED ZEPHYR_SDK_INSTALL_DIR))
# No toolchain was specified, so inform user that we will be searching.
if (NOT DEFINED ZEPHYR_SDK_INSTALL_DIR AND
NOT DEFINED ZEPHYR_TOOLCHAIN_VARIANT
AND NOT CMAKE_SCRIPT_MODE_FILE)
message(STATUS "ZEPHYR_TOOLCHAIN_VARIANT not set, trying to locate Zephyr SDK")
endif()
# This ensure packages are sorted in descending order.
SET(CMAKE_FIND_PACKAGE_SORT_DIRECTION_CURRENT ${CMAKE_FIND_PACKAGE_SORT_DIRECTION})
SET(CMAKE_FIND_PACKAGE_SORT_ORDER_CURRENT ${CMAKE_FIND_PACKAGE_SORT_ORDER})
SET(CMAKE_FIND_PACKAGE_SORT_DIRECTION DEC)
SET(CMAKE_FIND_PACKAGE_SORT_ORDER NATURAL)
if(DEFINED ZEPHYR_SDK_INSTALL_DIR)
# The Zephyr SDK will automatically set the toolchain variant.
# To support Zephyr SDK tools (DTC, and other tools) with 3rd party toolchains
# then we keep track of current toolchain variant.
set(ZEPHYR_CURRENT_TOOLCHAIN_VARIANT ${ZEPHYR_TOOLCHAIN_VARIANT})
find_package(Zephyr-sdk ${TOOLCHAIN_ZEPHYR_MINIMUM_REQUIRED_VERSION} REQUIRED QUIET HINTS $ENV{ZEPHYR_SDK_INSTALL_DIR})
if(DEFINED ZEPHYR_CURRENT_TOOLCHAIN_VARIANT)
set(ZEPHYR_TOOLCHAIN_VARIANT ${ZEPHYR_CURRENT_TOOLCHAIN_VARIANT})
endif()
else()
find_package(Zephyr-sdk ${TOOLCHAIN_ZEPHYR_MINIMUM_REQUIRED_VERSION} REQUIRED QUIET PATHS
/usr
/usr/local
/opt
$ENV{HOME}
$ENV{HOME}/.local
$ENV{HOME}/.local/opt
$ENV{HOME}/bin)
endif()
SET(CMAKE_FIND_PACKAGE_SORT_DIRECTION ${CMAKE_FIND_PACKAGE_SORT_DIRECTION_CURRENT})
SET(CMAKE_FIND_PACKAGE_SORT_ORDER ${CMAKE_FIND_PACKAGE_SORT_ORDER_CURRENT})
endif()
if(NOT DEFINED ZEPHYR_TOOLCHAIN_VARIANT)
if (NOT Zephyr-sdk_CONSIDERED_VERSIONS)
set(error_msg "ZEPHYR_TOOLCHAIN_VARIANT not specified and no Zephyr SDK is installed.\n")
string(APPEND error_msg "Please set ZEPHYR_TOOLCHAIN_VARIANT to the toolchain to use or install the Zephyr SDK.")
else()
# Note: When CMake minimum version becomes >= 3.17, change this loop into:
# foreach(version config IN ZIP_LISTS Zephyr-sdk_CONSIDERED_VERSIONS Zephyr-sdk_CONSIDERED_CONFIGS)
set(error_msg "The Zephyr SDK version you are using is not supported, please update your SDK.\n")
set(missing_version "You need SDK version ${TOOLCHAIN_ZEPHYR_MINIMUM_REQUIRED_VERSION} or newer.")
foreach (version ${Zephyr-sdk_CONSIDERED_VERSIONS})
if(${version} VERSION_GREATER ${TOOLCHAIN_ZEPHYR_MINIMUM_REQUIRED_VERSION})
set(missing_version "You need SDK version ${TOOLCHAIN_ZEPHYR_MINIMUM_REQUIRED_VERSION} or compatible version.")
endif()
list(GET Zephyr-sdk_CONSIDERED_CONFIGS 0 zephyr-sdk-candidate)
list(REMOVE_AT Zephyr-sdk_CONSIDERED_CONFIGS 0)
get_filename_component(zephyr-sdk-path ${zephyr-sdk-candidate}/../.. ABSOLUTE)
string(APPEND version_path " ${version} (${zephyr-sdk-path})")
endforeach()
string(APPEND error_msg "${missing_version}")
string(APPEND error_msg "You have version(s):")
string(APPEND error_msg "${version_path}")
endif()
message(FATAL_ERROR "${error_msg}
The Zephyr SDK can be downloaded from:
https://github.com/zephyrproject-rtos/sdk-ng/releases/download/v${TOOLCHAIN_ZEPHYR_MINIMUM_REQUIRED_VERSION}/zephyr-sdk-${TOOLCHAIN_ZEPHYR_MINIMUM_REQUIRED_VERSION}-setup.run
")
endif()
if(DEFINED ZEPHYR_SDK_INSTALL_DIR)
# Cache the Zephyr SDK install dir.
set(ZEPHYR_SDK_INSTALL_DIR ${ZEPHYR_SDK_INSTALL_DIR} CACHE PATH "Zephyr SDK install directory")
# Use the Zephyr SDK host-tools.
set(ZEPHYR_SDK_HOST_TOOLS TRUE)
endif()
if(CMAKE_SCRIPT_MODE_FILE)
if("${FORMAT}" STREQUAL "json")
set(json "{\"ZEPHYR_TOOLCHAIN_VARIANT\" : \"${ZEPHYR_TOOLCHAIN_VARIANT}\", ")
string(APPEND json "\"SDK_VERSION\": \"${SDK_VERSION}\", ")
string(APPEND json "\"ZEPHYR_SDK_INSTALL_DIR\" : \"${ZEPHYR_SDK_INSTALL_DIR}\"}")
message("${json}")
else()
message(STATUS "ZEPHYR_TOOLCHAIN_VARIANT: ${ZEPHYR_TOOLCHAIN_VARIANT}")
if(DEFINED SDK_VERSION)
message(STATUS "SDK_VERSION: ${SDK_VERSION}")
endif()
if(DEFINED ZEPHYR_SDK_INSTALL_DIR)
message(STATUS "ZEPHYR_SDK_INSTALL_DIR : ${ZEPHYR_SDK_INSTALL_DIR}")
endif()
endif()
endif()