46 lines
1.4 KiB
Rust
46 lines
1.4 KiB
Rust
use std::env;
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use std::fs::File;
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use std::io::Write;
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use std::path::PathBuf;
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fn main() {
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// Put `memory.x` in our output directory and ensure it's
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// on the linker search path.
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let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
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File::create(out.join("memory.x"))
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.unwrap()
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.write_all(include_bytes!("memory.x"))
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.unwrap();
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println!("cargo:rustc-link-search={}", out.display());
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// By default, Cargo will re-run a build script whenever
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// any file in the project changes. By specifying `memory.x`
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// here, we ensure the build script is only re-run when
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// `memory.x` is changed.
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println!("cargo:rerun-if-changed=memory.x");
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// Inject crate version into the .biv section.
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File::create(out.join("biv.rs"))
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.unwrap()
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.write_all(
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format!(
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r##"
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#[unsafe(link_section = ".biv")]
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#[used]
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static BOOT_IMAGE_VERSION: u32 = 0x{:02x}{:02x}{:02x}00;
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"##,
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env!("CARGO_PKG_VERSION_MAJOR")
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.parse::<u8>()
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.expect("should have major version"),
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env!("CARGO_PKG_VERSION_MINOR")
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.parse::<u8>()
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.expect("should have minor version"),
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env!("CARGO_PKG_VERSION_PATCH")
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.parse::<u8>()
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.expect("should have patch version"),
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)
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.as_bytes(),
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)
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.unwrap();
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}
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