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88 lines
2.9 KiB
88 lines
2.9 KiB
use std::env; |
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use std::error::Error; |
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use std::process::{Command, Output, Stdio}; |
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fn main() { |
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let dkp_path = env::var("DEVKITPRO").unwrap(); |
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let profile = env::var("PROFILE").unwrap(); |
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println!("cargo:rerun-if-changed=build.rs"); |
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println!("cargo:rerun-if-env-changed=DEVKITPRO"); |
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println!("cargo:rustc-link-search=native={dkp_path}/libctru/lib"); |
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println!( |
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"cargo:rustc-link-lib=static={}", |
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match profile.as_str() { |
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"debug" => "ctrud", |
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_ => "ctru", |
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} |
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); |
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match check_libctru_version() { |
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Ok((maj, min, patch)) => { |
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eprintln!("using libctru version {maj}.{min}.{patch}"); |
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// These are accessible by the crate during build with `env!()`. |
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// We might consider exporting some public constants or something. |
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println!("cargo:rustc-env=LIBCTRU_VERSION={maj}.{min}.{patch}"); |
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println!("cargo:rustc-env=LIBCTRU_MAJOR={maj}"); |
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println!("cargo:rustc-env=LIBCTRU_MINOR={min}"); |
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println!("cargo:rustc-env=LIBCTRU_PATCH={patch}"); |
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} |
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Err(err) => println!("cargo:warning=failed to check libctru version: {err}"), |
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} |
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} |
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fn parse_version(version: &str) -> Result<(String, String, String), &str> { |
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let versions: Vec<_> = version |
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.split(|c| c == '.' || c == '-') |
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.map(String::from) |
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.collect(); |
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match &versions[..] { |
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[major, minor, patch, _build] => Ok((major.clone(), minor.clone(), patch.clone())), |
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_ => Err("unexpected number of version segments"), |
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} |
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} |
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fn check_libctru_version() -> Result<(String, String, String), Box<dyn Error>> { |
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let pacman = which::which("dkp-pacman").or_else(|_| which::which("pacman"))?; |
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let Output { stdout, .. } = Command::new(&pacman) |
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.args(["--query", "libctru"]) |
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.stderr(Stdio::inherit()) |
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.output()?; |
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let output_str = String::from_utf8_lossy(&stdout); |
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let (_pkg, lib_version) = output_str |
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.split_once(char::is_whitespace) |
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.ok_or("unexpected pacman output format")?; |
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let lib_version = lib_version.trim(); |
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let cargo_pkg_version = env::var("CARGO_PKG_VERSION").unwrap(); |
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let (_, crate_built_version) = cargo_pkg_version |
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.split_once('+') |
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.expect("crate version should have '+' delimeter"); |
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if lib_version != crate_built_version { |
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return Err(format!( |
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"libctru version is {lib_version} but this crate was built for {crate_built_version}" |
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))?; |
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} |
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let Output { stdout, .. } = Command::new(pacman) |
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.args(["--query", "--list", "libctru"]) |
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.stderr(Stdio::inherit()) |
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.output()?; |
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for line in String::from_utf8_lossy(&stdout).split('\n') { |
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let Some((_pkg, file)) = line.split_once(char::is_whitespace) |
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else { continue }; |
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println!("cargo:rerun-if-changed={file}"); |
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} |
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let (lib_major, lib_minor, lib_patch) = parse_version(lib_version)?; |
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Ok((lib_major, lib_minor, lib_patch)) |
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}
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