toku-mac opened a new pull request, #3522:
URL: https://github.com/apache/nuttx-apps/pull/3522
## Summary
This updates the Rust example Makefiles so Cargo builds participate in
normal Make dependency tracking.
The change adds a `RUST_CARGO_SRCS` helper in `tools/Rust.mk` to collect
crate input files. The `hello` and `slint` Rust examples now use that file list
as prerequisites for their generated static libraries.
The examples also hook the generated Rust library into both `context` and
`all`.
As a result, editing Rust sources, manifests, build scripts, causes Cargo to
rebuild when `make` is run again.
## Testing
I confirm that changes are verified on local setup and works as intended:
* Build Host(s): OS (macOS 26.5), CPU(Apple M1), compiler(Apple clang
version 21.0.0)
* Target(s): arch(sim)
* Ensure your PATH environment variable is properly configured to allow
execution of: menuconfig, olddefconfig, savedefconfig, and setconfig.
* Use the Rust toolchain version prior to nightly-2026-04-29 to avoid errors
related to
lib/rustlib/src/rust/library/std/src/sys/net/connection/socket/unix.rs.
Configuration and Build:
```
make distclean
./tools/configure.sh sim:nsh
make menuconfig
# Quit using the `Q` command.
printf 'CONFIG_SYSTEM_TIME64=y
CONFIG_FS_LARGEFILE=y
CONFIG_TLS_NELEM=16
CONFIG_DEV_URANDOM=y
CONFIG_EXAMPLES_HELLO_RUST_CARGO=y
CONFIG_EXAMPLES_HELLO_RUST_CARGO_STACKSIZE=8192
' >> .config
make olddefconfig
make
LN: platform/board to /Users/toku/nuttxspace/apps/platform/dummy
Register: gpio
Register: hello
Register: hello_rust_cargo
Register: dd
Register: dumpstack
Register: nsh
Register: sh
Register: ostest
CP: /Users/toku/nuttxspace/nuttx/include/nuttx/config.h
CP: /Users/toku/nuttxspace/nuttx/include/nuttx/fs/hostfs.h
Building Rust code with cargo...
Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.26s
LD: nuttx
ld: warning: -ld_classic is deprecated and will be removed in a future
release
ld: warning: -ld_classic is deprecated and will be removed in a future
release
```
## PR verification Self-Check
* [x] My PR adheres to Contributing
[Guidelines](https://github.com/apache/nuttx/blob/master/CONTRIBUTING.md) and
[Documentation](https://nuttx.apache.org/docs/latest/contributing/index.html)
(git commit title and message, coding standard, etc).
* [x] My PR is ready for review and can be safely merged into a codebase.
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