embassy/stm32-metapac/build.rs

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Rust
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use std::env;
use std::path::PathBuf;
use stm32_metapac_gen::*;
fn parse_chip_core(chip_and_core: &str) -> (String, Option<String>) {
let mut s = chip_and_core.split('-');
let chip_name: String = s.next().unwrap().to_string();
if let Some(c) = s.next() {
if c.starts_with("cm") {
return (chip_name, Some(c.to_ascii_lowercase()));
}
}
(chip_and_core.to_string(), None)
}
fn main() {
let out_dir = PathBuf::from(env::var_os("OUT_DIR").unwrap());
let data_dir = PathBuf::from("../stm32-data/data");
let chip_core_name = env::vars_os()
.map(|(a, _)| a.to_string_lossy().to_string())
.find(|x| x.starts_with("CARGO_FEATURE_STM32"))
.expect("No stm32xx Cargo feature enabled")
.strip_prefix("CARGO_FEATURE_")
.unwrap()
.to_ascii_lowercase()
.replace('_', "-");
let (chip_name, _) = parse_chip_core(&chip_core_name);
let opts = Options {
out_dir: out_dir.clone(),
data_dir: data_dir.clone(),
chips: vec![chip_name.to_ascii_uppercase()],
};
Gen::new(opts).gen();
println!(
"cargo:rustc-link-search={}/src/chips/{}",
out_dir.display(),
chip_core_name,
);
#[cfg(feature = "memory-x")]
println!(
"cargo:rustc-link-search={}/src/chips/{}/memory_x/",
out_dir.display(),
chip_core_name
);
println!(
"cargo:rustc-env=STM32_METAPAC_PAC_PATH={}/src/chips/{}/pac.rs",
out_dir.display(),
chip_core_name
);
println!(
"cargo:rustc-env=STM32_METAPAC_METADATA_PATH={}/src/chips/{}/metadata.rs",
out_dir.display(),
chip_core_name
);
println!(
"cargo:rustc-env=STM32_METAPAC_COMMON_PATH={}/src/common.rs",
out_dir.display(),
);
println!("cargo:rerun-if-changed=build.rs");
// When the stm32-data chip's JSON changes, we must rebuild
println!(
"cargo:rerun-if-changed={}/chips/{}.json",
data_dir.display(),
chip_name
);
println!("cargo:rerun-if-changed={}/registers", data_dir.display());
}