no1wudi opened a new pull request, #15961:
URL: https://github.com/apache/nuttx/pull/15961
## Summary
Introduce the 'olddefconfig' target to streamline the process of updating
the configuration file while ensuring dependencies are met.
* Add 'olddefconfig' utility target to CMake build system
* Updates .config with minimal changes to satisfy dependencies
* Invalidates outdated config.h and triggers reconfiguration
* Aligns CMake targets with existing Makefile behavior
## Impact
* New feature added?: YES - Adds 'olddefconfig' target for config management
* Impact on user?: YES - Users gain a tool to efficiently update
configurations
* Impact on build?: YES - New target integrated into CMake build flow
* Impact on hardware?: NO
* Impact on documentation?: NO
* Impact on security?: NO
* Impact on compatibility?: NO - Enhances parity with Makefile without
breaking changes
## Testing
cd cmake/build/dir
```
nx➜ build git:(main) ✗ kconfig-tweak --enable CONFIG_FRAME_POINTER
nx➜ build git:(main) ✗ make olddefconfig
-- Configuring done (0.3s)
-- Generating done (0.6s)
-- Build files have been written to:
/home/huang/Work/nuttx-crates-index/build
Loaded configuration '/home/huang/Work/nuttx-crates-index/build/.config'
No change to configuration in
'/home/huang/Work/nuttx-crates-index/build/.config'
Built target olddefconfig
```
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