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cmake: Zephyr module processing set modules path

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This commit introduces the variable:
ZEPHYR_${MODULE}_MODULE_DIR that can be used for modules to obtain
locations of other modules.

As example: a module which requires the knowledge of mcuboot con now
fetch this information using ZEPHYR_MCUBOOT_MODULE_DIR.

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
This commit is contained in:
Torsten Rasmussen 2019-12-06 12:19:35 +01:00 committed by Carles Cufí
parent e4136178ed
commit 08eabb83b2
1 changed files with 12 additions and 2 deletions
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14
CMakeLists.txt
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@ -457,6 +457,7 @@ add_subdirectory(drivers)
if(EXISTS ${CMAKE_BINARY_DIR}/zephyr_modules.txt)
file(STRINGS ${CMAKE_BINARY_DIR}/zephyr_modules.txt ZEPHYR_MODULES_TXT
ENCODING UTF-8)
set(module_names)
foreach(module ${ZEPHYR_MODULES_TXT})
# Match "<name>":"<path>" for each line of file, each corresponding to
@ -464,13 +465,22 @@ if(EXISTS ${CMAKE_BINARY_DIR}/zephyr_modules.txt)
# lazy regexes (it supports greedy only).
string(REGEX REPLACE "\"(.*)\":\".*\"" "\\1" module_name ${module})
string(REGEX REPLACE "\".*\":\"(.*)\"" "\\1" module_path ${module})
list(APPEND module_names ${module_name})
string(TOUPPER ${module_name} MODULE_NAME_UPPER)
set(ZEPHYR_${MODULE_NAME_UPPER}_MODULE_DIR ${module_path})
endforeach()
foreach(module_name ${module_names})
# Note the second, binary_dir parameter requires the added
# subdirectory to have its own, local cmake target(s). If not then
# this binary_dir is created but stays empty. Object files land in
# the main binary dir instead.
# https://cmake.org/pipermail/cmake/2019-June/069547.html
set(ZEPHYR_CURRENT_MODULE_DIR ${module_path})
add_subdirectory(${module_path} ${CMAKE_BINARY_DIR}/modules/${module_name})
string(TOUPPER ${module_name} MODULE_NAME_UPPER)
set(ZEPHYR_CURRENT_MODULE_DIR ${ZEPHYR_${MODULE_NAME_UPPER}_MODULE_DIR})
add_subdirectory(${ZEPHYR_CURRENT_MODULE_DIR} ${CMAKE_CURRENT_BINARY_DIR}/modules/${module_name})
endforeach()
# Done processing modules, clear ZEPHYR_CURRENT_MODULE_DIR.
set(ZEPHYR_CURRENT_MODULE_DIR)