masc2008 opened a new pull request, #19029:
URL: https://github.com/apache/nuttx/pull/19029
## Summary
Make `nuttx_generate_preprocess_target()` emit depfiles for GNU/Clang
Ninja/Makefile builds.
This fixes stale generated outputs when a preprocessed source includes
other files via `#include`. One practical case is board ROMFS init
scripts like `rc.sysinit` including `rc.sysinit.ap`.
Before this change, editing the included fragment might not regenerate
the generated `rc.sysinit` and final ROMFS image.
## Impact
Build system only.
Improves dependency tracking for preprocess-generated files and avoids
stale ROMFS/script outputs.
## Testing
- Reviewed the ROMFS preprocess flow in:
- `cmake/nuttx_toolchain.cmake`
- `cmake/nuttx_add_romfs.cmake`
- Verified the issue against a NuttX-based downstream board build that
uses preprocessed `rc.sysinit` fragments
- Confirmed that after the change, modifying an included init fragment
regenerates:
- generated `rc.sysinit`
- `romfs_etc.c`
- final image
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