colin
5b99d30cda
this solves an issue in the Nix build, where managing multiple Cargo.lock files is otherwise tricky. it causes (or fails to fix?) an adjacent issue where the spirv builder doesn't seem to have everything it needs vendored.
61 lines
2.0 KiB
Rust
61 lines
2.0 KiB
Rust
use std::env;
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use std::error::Error;
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use std::path::PathBuf;
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fn main() -> Result<(), Box<dyn Error>> {
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// heavily inspired from EmbarkStudios/rust-gpu/examples/runners/wgpu/build.rs
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println!("cargo:rerun-if-changed=build.rs");
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println!("cargo:rerun-if-env-changed=CARGO_CFG_TARGET_OS");
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println!("cargo:rerun-if-env-changed=CARGO_CFG_TARGET_ARCH");
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// While OUT_DIR is set for both build.rs and compiling the crate, PROFILE is only set in
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// build.rs. So, export it to crate compilation as well.
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let profile = env::var("PROFILE").unwrap();
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println!("cargo:rustc-env=PROFILE={}", profile);
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let mut dir = PathBuf::from(env::var_os("OUT_DIR").unwrap());
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println!("OUT_DIR: {:?}", dir);
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// recover the directory from which this was invoked
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while !dir.ends_with("target") {
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dir.pop();
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}
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assert!(dir.pop());
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if dir.ends_with("spirv_backend_runner") {
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// being run from this dir
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assert!(
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dir.pop()
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&& dir.ends_with("spirv")
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&& dir.pop()
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&& dir.ends_with("sim")
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&& dir.pop()
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&& dir.ends_with("src")
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&& dir.pop()
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);
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} // else already at the top-level dir
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let target_dir = dir.join("target/spirv_backend_builder");
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let manifest_path = dir.join("crates/spirv_backend_builder/Cargo.toml");
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println!("target_dir: {:?}", target_dir);
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println!("manifest_path: {:?}", manifest_path);
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let status = std::process::Command::new("cargo")
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.args([
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"run",
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"--release",
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"--manifest-path",
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])
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.arg(manifest_path)
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.arg("--target-dir")
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.arg(target_dir)
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.stderr(std::process::Stdio::inherit())
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.stdout(std::process::Stdio::inherit())
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.status()?;
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if !status.success() {
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if let Some(code) = status.code() {
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std::process::exit(code);
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} else {
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std::process::exit(1);
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}
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}
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Ok(())
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}
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