4lDO2
80 lines
2.6 KiB
Rust
80 lines
2.6 KiB
Rust
use rustc_cfg::Cfg;
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use toml::Table;
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use std::env;
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use std::path::Path;
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use std::process::Command;
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fn parse_kconfig(arch: &str) -> Option<()> {
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println!("cargo:rerun-if-changed=config.toml");
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assert!(Path::new("config.toml.example").try_exists().unwrap());
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if !Path::new("config.toml").try_exists().unwrap() {
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std::fs::copy("config.toml.example", "config.toml").unwrap();
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}
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let config_str = std::fs::read_to_string("config.toml").unwrap();
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let root: Table = toml::from_str(&config_str).unwrap();
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let altfeatures = root.get("arch")?.as_table().unwrap()
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.get(arch)?.as_table().unwrap()
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.get("features")?.as_table().unwrap();
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for (name, value) in altfeatures {
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let choice = value.as_str().unwrap();
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assert!(matches!(choice, "always" | "never" | "auto"));
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println!("cargo:rustc-cfg=cpu_feature_{choice}=\"{name}\"");
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}
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Some(())
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}
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fn main() {
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println!("cargo:rustc-env=TARGET={}", env::var("TARGET").unwrap());
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let out_dir = env::var("OUT_DIR").unwrap();
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let cfg = Cfg::new(env::var_os("TARGET").unwrap()).unwrap();
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let arch_str = cfg.target_arch.as_str();
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match arch_str {
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"aarch64" => {
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// Build pre kstart init asm code for aarch64
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/*TODO: do we need any of this?
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println!("cargo:rerun-if-changed=src/arch/aarch64/init/pre_kstart/early_init.S");
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cc::Build::new()
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.file("src/arch/aarch64/init/pre_kstart/early_init.S")
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.target("aarch64-unknown-redox")
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.compile("early_init");
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*/
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},
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"x86" => {
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println!("cargo:rerun-if-changed=src/asm/x86/trampoline.asm");
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let status = Command::new("nasm")
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.arg("-f").arg("bin")
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.arg("-o").arg(format!("{}/trampoline", out_dir))
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.arg("src/asm/x86/trampoline.asm")
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.status()
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.expect("failed to run nasm");
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if ! status.success() {
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panic!("nasm failed with exit status {}", status);
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}
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},
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"x86_64" => {
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println!("cargo:rerun-if-changed=src/asm/x86_64/trampoline.asm");
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let status = Command::new("nasm")
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.arg("-f").arg("bin")
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.arg("-o").arg(format!("{}/trampoline", out_dir))
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.arg("src/asm/x86_64/trampoline.asm")
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.status()
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.expect("failed to run nasm");
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if ! status.success() {
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panic!("nasm failed with exit status {}", status);
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}
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}
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_ => (),
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}
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let _ = parse_kconfig(arch_str);
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}
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