616: rtic::mutex::prelude::* fixes glob import lint r=korken89 a=AfoHT
Running cargo Clippy with pedantic rules denied
```
cargo clippy -- --deny clippy::pedantic
```
it will complain:
```
error: usage of wildcard import
|
16 | use rtic::mutex_prelude::*;
| ^^^^^^^^^^^^^^^^^^^^^^ help: try: `rtic::mutex_prelude::{Mutex, TupleExt01, TupleExt02, TupleExt03, TupleExt04, TupleExt05, TupleExt06, TupleExt07, TupleExt08, TupleExt09, TupleExt10, TupleExt11, TupleExt12, TupleExt13, TupleExt14, TupleExt15, TupleExt16, TupleExt17, TupleExt18, TupleExt19, TupleExt20, TupleExt21, TupleExt22, TupleExt23, TupleExt24, TupleExt25, TupleExt26, TupleExt27, TupleExt28, TupleExt29, TupleExt30, TupleExt31, TupleExt32}`
|
= note: `-D clippy::wildcard-imports` implied by `-D clippy::pedantic`
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wildcard_imports
error: could not compile --- due to previous error
Error: command `cargo clippy -- --deny clippy::all --deny clippy::pedantic` failed, exit status: 101
```
Looking at the Clippy [wildcard-imports rule](https://rust-lang.github.io/rust-clippy/master/#wildcard_imports)
the exception is for wildcards on modules named prelude. Thus, `prelude::*` is OK.
Current state: `use rtic-core::prelude as mutex_prelude` almost fits the bill, but `mutex_prelude != prelude`.
As this was part of user facing API I don’t think we can remove the current setup,
so rtic-core `Mutex`, `Exclusive` and multi-lock `TupleExt0X` retained in
old location to be backwards compatible.
Co-authored-by: Henrik Tjäder <henrik@grepit.se>
593: RTIC macro expansion: Try to find target-dir r=korken89 a=AfoHT
Seems over-engineered, but for projects where
```
[build]
target-dir = "target"
```
is set to anything other than default `target` RTIC did simply not produce any `rtic-expansion.rs`.
This changes the approach to not giving up if not finding `target/` by looking at `OUT_DIR` and traversing back until `TARGET` is found.
As the `TARGET` target-triple variable is not available, approximate the `TARGET` folder (found in `target-dir`) with `s.starts_with("thumbv")`.
`target-dir` as set in `.cargo/config` will now be the parent directory of the `Path` ending with `TARGET`
## Example running with default target:
```
cortex-m-rtic on expansionoutdir [$!?] is 📦 v1.0.0 via R v1.58.0 took 4s
❯ cargo build --example spawn --target thumbv7em-none-eabihf
OUT_DIR
"/home/henrik/rust/rtic/cortex-m-rtic/target/thumbv7em-none-eabihf/debug/build/cortex-m-rtic-5bd81e8412a790d5/out"
target/ exists
Write file:
target/rtic-expansion.rs
Finished dev [unoptimized + debuginfo] target(s) in 7.20s
```
## Contrived example
With `.cargo/config` containing:
```
[build]
target-dir = "/tmp/cargothingy/../rust/./target/cargo"`
```
```
cortex-m-rtic on expansionoutdir [$!?] is 📦 v1.0.0 via R v1.58.0 took 3s
❯ cargo build --example spawn --target thumbv7em-none-eabihf
OUT_DIR
"/tmp/cargothingy/../rust/./target/cargo/thumbv7em-none-eabihf/debug/build/cortex-m-rtic-5bd81e8412a790d5/out"
"/tmp/cargothingy/../rust/./target/cargo"
Write file:
/tmp/cargothingy/../rust/./target/cargo/rtic-expansion.rs
Finished dev [unoptimized + debuginfo] target(s) in 6.42s
```
## Less extreme with relative paths
```
[build]
target-dir = "../../cargothingy/target/buildfiles/and-stuff"
```
```
OUT_DIR
"/home/henrik/rust/rtic/cortex-m-rtic/../../cargothingy/target/buildfiles/and-stuff/thumbv7em-none-eabihf/debug/build/cortex-m-rtic-5bd81e8412a790d5/out"
"/home/henrik/rust/rtic/cortex-m-rtic/../../cargothingy/target/buildfiles/and-stuff"
Write file:
/home/henrik/rust/rtic/cortex-m-rtic/../../cargothingy/target/buildfiles/and-stuff/rtic-expansion.rs
Finished dev [unoptimized + debuginfo] target(s) in 6.78s
```
Note: If the user creates a folder named target in the same directory where `Cargo.toml`/crate root is, that will be used for storing the expansion.
```
<...>
OUT_DIR
"/home/henrik/rust/rtic/cortex-m-rtic/../../cargothingy/target/buildfiles/and-stuff/thumbv7em-none-eabihf/debug/build/cortex-m-rtic-5bd81e8412a790d5/out"
target/ exists
Write file:
target/rtic-expansion.rs
Finished dev [unoptimized + debuginfo] target(s) in 6.62s
```
Co-authored-by: Henrik Tjäder <henrik@grepit.se>
