45 lines
1.4 KiB
Rust
45 lines
1.4 KiB
Rust
use std::env;
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use std::ffi::OsString;
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use std::process::Command;
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fn main() {
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println!("cargo:rerun-if-changed=build.rs");
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let rustc = env::var_os("RUSTC").unwrap_or_else(|| OsString::from("rustc"));
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let output = Command::new(rustc)
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.arg("--version")
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.output()
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.expect("failed to run `rustc --version`");
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if String::from_utf8_lossy(&output.stdout).contains("nightly") {
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println!("cargo:rustc-cfg=nightly");
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}
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let target = env::var("TARGET").unwrap();
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if target.starts_with("thumbv6m-") {
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println!("cargo:rustc-cfg=cortex_m");
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println!("cargo:rustc-cfg=armv6m");
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} else if target.starts_with("thumbv7m-") {
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println!("cargo:rustc-cfg=cortex_m");
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println!("cargo:rustc-cfg=armv7m");
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} else if target.starts_with("thumbv7em-") {
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println!("cargo:rustc-cfg=cortex_m");
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println!("cargo:rustc-cfg=armv7m");
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println!("cargo:rustc-cfg=armv7em"); // (not currently used)
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} else if target.starts_with("thumbv8m.base") {
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println!("cargo:rustc-cfg=cortex_m");
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println!("cargo:rustc-cfg=armv8m");
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println!("cargo:rustc-cfg=armv8m_base");
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} else if target.starts_with("thumbv8m.main") {
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println!("cargo:rustc-cfg=cortex_m");
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println!("cargo:rustc-cfg=armv8m");
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println!("cargo:rustc-cfg=armv8m_main");
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}
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if target.ends_with("-eabihf") {
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println!("cargo:rustc-cfg=has_fpu");
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}
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}
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