cmake: Zephyr package now sets ZEPHYR_BASE as cmake cached variable
This commit introduces ZEPHYR_BASE as a cached variable, ensures that once ZEPHYR_BASE has been set in a project, it is sticky. Using cached variable also allows users to reconfigure ZEPHYR_BASE if they so wish. Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
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3 changed files with 78 additions and 54 deletions
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@ -20,15 +20,19 @@ macro(include_boilerplate location)
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endif()
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endmacro()
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set(ZEPHYR_BASE $ENV{ZEPHYR_BASE})
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if (ZEPHYR_BASE)
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set(ENV_ZEPHYR_BASE $ENV{ZEPHYR_BASE})
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if((NOT DEFINED ZEPHYR_BASE) AND (DEFINED ENV_ZEPHYR_BASE))
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# Get rid of any double folder string before comparison, as example, user provides
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# ZEPHYR_BASE=//path/to//zephyr_base/
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# must also work.
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get_filename_component(ZEPHYR_BASE ${ZEPHYR_BASE} ABSOLUTE)
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get_filename_component(ZEPHYR_BASE ${ENV_ZEPHYR_BASE} ABSOLUTE)
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set(ZEPHYR_BASE ${ZEPHYR_BASE} CACHE PATH "Zephyr base")
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include_boilerplate("Zephyr base")
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return()
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endif()
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include_boilerplate("zephyr base")
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if (DEFINED ZEPHYR_BASE)
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include_boilerplate("Zephyr base (cached)")
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return()
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endif()
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@ -39,28 +43,28 @@ endif()
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# Find out the current Zephyr base.
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get_filename_component(CURRENT_ZEPHYR_DIR ${CMAKE_CURRENT_LIST_FILE}/${ZEPHYR_RELATIVE_DIR} ABSOLUTE)
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get_filename_component(PROJECT_WORKTREE_DIR ${CMAKE_CURRENT_LIST_FILE}/${PROJECT_WORKTREE_RELATIVE_DIR} ABSOLUTE)
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get_filename_component(CURRENT_WORKSPACE_DIR ${CMAKE_CURRENT_LIST_FILE}/${WORKSPACE_RELATIVE_DIR} ABSOLUTE)
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string(FIND "${CMAKE_CURRENT_SOURCE_DIR}" "${CURRENT_ZEPHYR_DIR}/" COMMON_INDEX)
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if (COMMON_INDEX EQUAL 0)
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# Project is in-zephyr-tree.
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# We are in Zephyr tree.
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set(ZEPHYR_BASE ${CURRENT_ZEPHYR_DIR})
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include_boilerplate("in-zephyr-tree")
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# Project is in Zephyr repository.
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# We are in Zephyr repository.
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set(ZEPHYR_BASE ${CURRENT_ZEPHYR_DIR} CACHE PATH "Zephyr base")
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include_boilerplate("Zephyr repository")
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return()
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endif()
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if(IS_INCLUDED)
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# A higher level did the checking and included us and as we are not in-zephyr-tree (checked above)
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# then we must be in work-tree.
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set(ZEPHYR_BASE ${CURRENT_ZEPHYR_DIR})
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include_boilerplate("in-work-tree")
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# A higher level did the checking and included us and as we are not in Zephyr repository
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# (checked above) then we must be in Zephyr workspace.
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set(ZEPHYR_BASE ${CURRENT_ZEPHYR_DIR} CACHE PATH "Zephyr base")
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include_boilerplate("Zephyr workspace")
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endif()
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if(NOT IS_INCLUDED)
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string(FIND "${CMAKE_CURRENT_SOURCE_DIR}" "${PROJECT_WORKTREE_DIR}/" COMMON_INDEX)
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string(FIND "${CMAKE_CURRENT_SOURCE_DIR}" "${CURRENT_WORKSPACE_DIR}/" COMMON_INDEX)
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if (COMMON_INDEX EQUAL 0)
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# Project is in-project-worktree-tree.
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# Project is in Zephyr workspace.
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# This means this Zephyr is likely the correct one, but there could be an alternative installed along-side
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# Thus, check if there is an even better candidate.
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# This check works the following way.
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@ -69,20 +73,20 @@ if(NOT IS_INCLUDED)
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# comon path with the current sample.
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# and if so, we will retrun here, and let CMake call into the other registered package for real
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# version checking.
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check_zephyr_package(PROJECT_WORKTREE_DIR ${PROJECT_WORKTREE_DIR})
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check_zephyr_package(CURRENT_WORKSPACE_DIR ${CURRENT_WORKSPACE_DIR})
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# We are the best candidate, so let's include boiler plate.
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set(ZEPHYR_BASE ${CURRENT_ZEPHYR_DIR})
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include_boilerplate("in-work-tree")
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set(ZEPHYR_BASE ${CURRENT_ZEPHYR_DIR} CACHE PATH "Zephyr base")
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include_boilerplate("Zephyr workspace")
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return()
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endif()
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check_zephyr_package(SEARCH_PARENTS)
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# Ending here means there were no candidates in-tree of the app.
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# Thus, the app is build oot.
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# Ending here means there were no candidates in workspace of the app.
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# Thus, the app is built as a Zephyr Freestanding application.
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# CMake find_package has already done the version checking, so let's just include boiler plate.
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# Previous find_package would have cleared Zephyr_FOUND variable, thus set it again.
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set(ZEPHYR_BASE ${CURRENT_ZEPHYR_DIR})
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include_boilerplate("out-of-worktree")
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set(ZEPHYR_BASE ${CURRENT_ZEPHYR_DIR} CACHE PATH "Zephyr base")
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include_boilerplate("Freestanding")
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endif()
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@ -16,7 +16,7 @@ macro(check_zephyr_version)
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if(PACKAGE_VERSION VERSION_LESS PACKAGE_FIND_VERSION)
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if(IS_INCLUDED)
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# We are just a candidate, meaning we have been included from other installed module.
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message("\n The following in-zephyr-tree configuration file were considered but not accepted:")
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message("\n The following Zephyr repository configuration file were considered but not accepted:")
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message("\n ${CMAKE_CURRENT_LIST_FILE}, version: ${PACKAGE_VERSION}\n")
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endif()
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@ -32,8 +32,14 @@ macro(check_zephyr_version)
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endif()
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endmacro()
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# First check to see if user has provided a Zephyr base manually.
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set(ZEPHYR_BASE $ENV{ZEPHYR_BASE})
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# First check to see if user has provided a Zephyr base manually and it is first run (cache not set).
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set(ENV_ZEPHYR_BASE $ENV{ZEPHYR_BASE})
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if((NOT DEFINED ZEPHYR_BASE) AND (DEFINED ENV_ZEPHYR_BASE))
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# Get rid of any double folder string before comparison, as example, user provides
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# ZEPHYR_BASE=//path/to//zephyr_base/
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# must also work.
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get_filename_component(ZEPHYR_BASE $ENV{ZEPHYR_BASE} ABSOLUTE)
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endif()
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# If ZEPHYR_CANDIDATE is set, it means this file was include instead of called via find_package directly.
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if(ZEPHYR_CANDIDATE)
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@ -42,18 +48,16 @@ else()
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include(${CMAKE_CURRENT_LIST_DIR}/zephyr_package_search.cmake)
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endif()
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if (ZEPHYR_BASE)
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# ZEPHYR_BASE was set in environment, meaning the package version must be ignored and the Zephyr
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# pointed to by ZEPHYR_BASE is to be used regardless of version
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# Get rid of any double folder string before comparison, as example, user provides
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# ZEPHYR_BASE=//path/to//zephyr_base/
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# must also work.
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get_filename_component(ZEPHYR_BASE ${ZEPHYR_BASE} ABSOLUTE)
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if((DEFINED ZEPHYR_BASE) OR (DEFINED ENV_ZEPHYR_BASE))
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# ZEPHYR_BASE was set in cache from earlier run or in environment (first run),
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# meaning the package version must be ignored and the Zephyr pointed to by
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# ZEPHYR_BASE is to be used regardless of version.
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if (${ZEPHYR_BASE}/share/zephyr-package/cmake STREQUAL ${CMAKE_CURRENT_LIST_DIR})
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# We are the Zephyr to be used
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set(PACKAGE_VERSION_COMPATIBLE TRUE)
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set(PACKAGE_VERSION_EXACT TRUE)
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elseif ((NOT IS_INCLUDED) AND (DEFINED ZEPHYR_BASE))
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check_zephyr_package(ZEPHYR_BASE ${ZEPHYR_BASE} VERSION_CHECK)
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else()
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# User has pointed to a different Zephyr installation, so don't use this version
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set(PACKAGE_VERSION_COMPATIBLE FALSE)
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@ -63,9 +67,9 @@ endif()
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# Find out the current Zephyr base.
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get_filename_component(CURRENT_ZEPHYR_DIR ${CMAKE_CURRENT_LIST_DIR}/../../.. ABSOLUTE)
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get_filename_component(PROJECT_WORKTREE_DIR ${CMAKE_CURRENT_LIST_DIR}/../../../.. ABSOLUTE)
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get_filename_component(CURRENT_WORKSPACE_DIR ${CMAKE_CURRENT_LIST_DIR}/../../../.. ABSOLUTE)
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# Temporary set local Zephyr base to allow using version.cmake to find this Zephyr tree current version
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# Temporary set local Zephyr base to allow using version.cmake to find this Zephyr repository current version
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set(ZEPHYR_BASE ${CURRENT_ZEPHYR_DIR})
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# Tell version.cmake to not print as printing version for all Zephyr installations being tested
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@ -79,28 +83,28 @@ set(ZEPHYR_BASE)
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# Do we share common index, if so, this is the correct version to check.
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string(FIND "${CMAKE_CURRENT_SOURCE_DIR}" "${CURRENT_ZEPHYR_DIR}/" COMMON_INDEX)
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if (COMMON_INDEX EQUAL 0)
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# Project is in-zephyr-tree.
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# Project is a Zephyr repository app.
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check_zephyr_version()
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return()
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endif()
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if(NOT IS_INCLUDED)
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# Only do this if we are an installed CMake Config package and checking for work-tree candidates.
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# Only do this if we are an installed CMake Config package and checking for workspace candidates.
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string(FIND "${CMAKE_CURRENT_SOURCE_DIR}" "${PROJECT_WORKTREE_DIR}/" COMMON_INDEX)
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string(FIND "${CMAKE_CURRENT_SOURCE_DIR}" "${CURRENT_WORKSPACE_DIR}/" COMMON_INDEX)
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if (COMMON_INDEX EQUAL 0)
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# Project is a Zephyr workspace app.
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# This means this Zephyr is likely the correct one, but there could be an alternative installed along-side
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# Thus, check if there is an even better candidate.
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check_zephyr_package(PROJECT_WORKTREE_DIR ${PROJECT_WORKTREE_DIR} VERSION_CHECK)
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check_zephyr_package(CURRENT_WORKSPACE_DIR ${CURRENT_WORKSPACE_DIR} VERSION_CHECK)
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# We are the best candidate, so let's check our own version.
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check_zephyr_version()
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return()
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endif()
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# Checking for installed candidates which could also be an worktree candidates.
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# Checking for installed candidates which could also be an workspace candidates.
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# This check works the following way.
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# CMake finds packages will look all packages registered in the user package registry.
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# As this code is processed inside registered packages, we simply test if
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@ -113,7 +117,7 @@ if(NOT IS_INCLUDED)
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check_zephyr_package(SEARCH_PARENTS VERSION_CHECK)
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endif()
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# Ending here means there were no candidates in-tree of the app.
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# Thus, the app is build oot.
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# Ending here means there were no candidates in workspace of the app.
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# Thus, the app is built as a Zephyr Freestanding application.
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# Let's do basic CMake version checking.
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check_zephyr_version()
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@ -3,8 +3,8 @@
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# Linux/MacOS: ~/.cmake/packages
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# Windows: Registry database
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# Relative directory of worktree project dir as seen from Zephyr package file
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set(PROJECT_WORKTREE_RELATIVE_DIR "../../../../..")
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# Relative directory of workspace project dir as seen from Zephyr package file
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set(WORKSPACE_RELATIVE_DIR "../../../../..")
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# Relative directory of Zephyr dir as seen from Zephyr package file
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set(ZEPHYR_RELATIVE_DIR "../../../..")
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@ -21,17 +21,22 @@ endmacro()
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# This macro can check for additional Zephyr package that has a better match
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# Options:
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# - PROJECT_WORKTREE_DIR: Search for projects in specified worktree.
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# - ZEPHYR_BASE : Use the specified ZEPHYR_BASE directly.
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# - WORKSPACE_DIR : Search for projects in specified workspace.
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# - SEARCH_PARENTS : Search parent folder of current source file (application) to locate in-project-tree Zephyr candidates.
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# - CHECK_ONLY : Only set PACKAGE_VERSION_COMPATIBLE to false if a better candidate is found, default is to also include the found candidate.
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# - VERSION_CHECK : This is the version check stage by CMake find package
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macro(check_zephyr_package)
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set(options CHECK_ONLY INCLUDE_FILE SEARCH_PARENTS VERSION_CHECK)
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set(single_args PROJECT_WORKTREE_DIR)
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cmake_parse_arguments(CHECK_ZEPHYR_PACKAGE "${options}" "${single_args}" "" ${ARGN})
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set(options CHECK_ONLY INCLUDE_FILE SEARCH_PARENTS VERSION_CHECK)
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set(single_args WORKSPACE_DIR ZEPHYR_BASE)
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cmake_parse_arguments(CHECK_ZEPHYR_PACKAGE "${options}" "${single_args}" "" ${ARGN})
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if(CHECK_ZEPHYR_PACKAGE_PROJECT_WORKTREE_DIR)
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set(SEARCH_SETTINGS PATHS ${CHECK_ZEPHYR_PACKAGE_PROJECT_WORKTREE_DIR}/zephyr ${CHECK_ZEPHYR_PACKAGE_PROJECT_WORKTREE_DIR} NO_DEFAULT_PATH)
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if(CHECK_ZEPHYR_PACKAGE_ZEPHYR_BASE)
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set(SEARCH_SETTINGS PATHS ${CHECK_ZEPHYR_PACKAGE_ZEPHYR_BASE} NO_DEFAULT_PATH)
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endif()
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if(CHECK_ZEPHYR_PACKAGE_WORKSPACE_DIR)
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set(SEARCH_SETTINGS PATHS ${CHECK_ZEPHYR_PACKAGE_WORKSPACE_DIR}/zephyr ${CHECK_ZEPHYR_PACKAGE_WORKSPACE_DIR} NO_DEFAULT_PATH)
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endif()
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if(CHECK_ZEPHYR_PACKAGE_SEARCH_PARENTS)
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@ -49,11 +54,22 @@ macro(check_zephyr_package)
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list(REMOVE_DUPLICATES Zephyr_CONSIDERED_CONFIGS)
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foreach(ZEPHYR_CANDIDATE ${Zephyr_CONSIDERED_CONFIGS})
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if(CHECK_ZEPHYR_PACKAGE_PROJECT_WORKTREE_DIR)
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# Check is done in project tree already, thus check only for pure Zephyr candidates.
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if(CHECK_ZEPHYR_PACKAGE_WORKSPACE_DIR)
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# Check is done in Zephyr workspace already, thus check only for pure Zephyr candidates.
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get_filename_component(CANDIDATE_DIR ${ZEPHYR_CANDIDATE}/${ZEPHYR_RELATIVE_DIR} ABSOLUTE)
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else()
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get_filename_component(CANDIDATE_DIR ${ZEPHYR_CANDIDATE}/${PROJECT_WORKTREE_RELATIVE_DIR} ABSOLUTE)
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get_filename_component(CANDIDATE_DIR ${ZEPHYR_CANDIDATE}/${WORKSPACE_RELATIVE_DIR} ABSOLUTE)
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endif()
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if(CHECK_ZEPHYR_PACKAGE_ZEPHYR_BASE)
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if(CHECK_ZEPHYR_PACKAGE_VERSION_CHECK)
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string(REGEX REPLACE "\.cmake$" "Version.cmake" ZEPHYR_VERSION_CANDIDATE ${ZEPHYR_CANDIDATE})
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include(${ZEPHYR_VERSION_CANDIDATE} NO_POLICY_SCOPE)
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return()
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else()
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include(${ZEPHYR_CANDIDATE} NO_POLICY_SCOPE)
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return()
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endif()
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endif()
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string(FIND "${CMAKE_CURRENT_SOURCE_DIR}" "${CANDIDATE_DIR}/" COMMON_INDEX)
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