This commit includes the following fixes in order to remove environment
setting of ZEPHYR_BASE is west extension commands.
- Build command
west build --pristine will now use the ZEPHYR_BASE variable found
in CMakeCache.txt in the build folder.
This ensures that the pristine command is executed from the same
Zephyr that was used for compilation.
- Board command
The west boards command no longer sets Zephyr base before invoking
cmake -P cmake/boards.cmake
Instead boards.cmake uses find_package(Zephyr) to ensure consistent
behavior with Zephyr samples, so that the detection of Zephyr base is
uniform across CMake commands.
It also changes BOARD_ROOT_SPACE_SEPARATED to BOARD_ROOT in order to
be consistent with existing user documentation.
Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
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