pietroalbini commented on code in PR #13086:
URL: https://github.com/apache/nuttx/pull/13086#discussion_r1726681614
##########
cmake/menuconfig.cmake:
##########
@@ -74,6 +74,24 @@ add_custom_target(
${NUTTX_DEFCONFIG}
WORKING_DIRECTORY ${NUTTX_DIR})
+add_custom_target(
+ oldconfig
+ COMMAND ${CMAKE_COMMAND} -E env ${KCONFIG_ENV} oldconfig
+ COMMAND ${CMAKE_COMMAND} -E remove -f
+ ${CMAKE_BINARY_DIR}/include/nuttx/config.h # invalidate existing
+ # config
+ COMMAND ${CMAKE_COMMAND} -E touch ${CMAKE_PARENT_LIST_FILE}
Review Comment:
The general reason why this command is here is the same as
https://github.com/apache/nuttx/pull/13086#discussion_r1726678583. If the
command above is present but this one is not, building after invoking
`oldconfig` or `olddefconfig` will result in this error:
```
ninja: error: 'include/nuttx/config.h', needed by
'CMakeFiles/nuttx_context', missing and no known rule to make it
```
I am not that familiar with CMake to know exactly why this command fixes the
error message, but I guess it prompts CMAke to re-evaluate the list of rules it
provides to ninja.
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