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Create the disk image in a build script

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Philipp Oppermann
2023-05-01 13:23:37 +02:00
parent 51e0dc1b63
commit 34b1eb4741
3 changed files with 32 additions and 17 deletions
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2
Cargo.toml
View File

@@ -7,5 +7,7 @@ edition = "2021"
members = ["kernel"]
[dependencies]
[build-dependencies]
kernel = { path = "kernel", artifact = "bin", target = "x86_64-unknown-none" }
bootloader = "0.11.3"

21
build.rs Normal file
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@@ -0,0 +1,21 @@
use bootloader::DiskImageBuilder;
use std::{env, path::PathBuf};
fn main() {
// set by cargo for the kernel artifact dependency
let kernel_path = env::var("CARGO_BIN_FILE_KERNEL").unwrap();
let disk_builder = DiskImageBuilder::new(PathBuf::from(kernel_path));
// specify output paths
let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
let uefi_path = out_dir.join("blog_os-uefi.img");
let bios_path = out_dir.join("blog_os-bios.img");
// create the disk images
disk_builder.create_uefi_image(&uefi_path).unwrap();
disk_builder.create_bios_image(&bios_path).unwrap();
// pass the disk image paths via environment variables
println!("cargo:rustc-env=UEFI_IMAGE={}", uefi_path.display());
println!("cargo:rustc-env=BIOS_IMAGE={}", bios_path.display());
}

26
src/main.rs
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@@ -1,21 +1,13 @@
use bootloader::DiskImageBuilder;
use std::{env, error::Error, path::PathBuf};
use std::{env, fs};
fn main() -> Result<(), Box<dyn Error>> {
// set by cargo for the kernel artifact dependency
let kernel_path = PathBuf::from(env!("CARGO_BIN_FILE_KERNEL"));
let disk_builder = DiskImageBuilder::new(kernel_path);
fn main() {
let current_exe = env::current_exe().unwrap();
let uefi_target = current_exe.with_file_name("uefi.img");
let bios_target = current_exe.with_file_name("bios.img");
// place the disk image files under target/debug or target/release
let target_dir = env::current_exe()?;
fs::copy(env!("UEFI_IMAGE"), &uefi_target).unwrap();
fs::copy(env!("BIOS_IMAGE"), &bios_target).unwrap();
let uefi_path = target_dir.with_file_name("blog_os-uefi.img");
disk_builder.create_uefi_image(&uefi_path)?;
println!("Created UEFI disk image at {}", uefi_path.display());
let bios_path = target_dir.with_file_name("blog_os-bios.img");
disk_builder.create_bios_image(&bios_path)?;
println!("Created BIOS disk image at {}", bios_path.display());
Ok(())
println!("UEFI disk image at {}", uefi_target.display());
println!("BIOS disk image at {}", bios_target.display());
}