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