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use std::env;
use std::path::PathBuf;
use super::path::{Dirs, RelPath};
use super::rustc_info::get_file_name;
use super::utils::{is_ci, is_ci_opt, CargoProject, Compiler};
pub(crate) static CG_CLIF: CargoProject = CargoProject::new(&RelPath::SOURCE, "cg_clif");
pub(crate) fn build_backend(
dirs: &Dirs,
channel: &str,
bootstrap_host_compiler: &Compiler,
use_unstable_features: bool,
) -> PathBuf {
let mut cmd = CG_CLIF.build(&bootstrap_host_compiler, dirs);
cmd.env("CARGO_BUILD_INCREMENTAL", "true"); // Force incr comp even in release mode
let mut rustflags = env::var("RUSTFLAGS").unwrap_or_default();
if is_ci() {
// Deny warnings on CI
rustflags += " -Dwarnings";
// Disabling incr comp reduces cache size and incr comp doesn't save as much on CI anyway
cmd.env("CARGO_BUILD_INCREMENTAL", "false");
if !is_ci_opt() {
cmd.env("CARGO_PROFILE_RELEASE_DEBUG_ASSERTIONS", "true");
}
}
if use_unstable_features {
cmd.arg("--features").arg("unstable-features");
}
match channel {
"debug" => {}
"release" => {
cmd.arg("--release");
}
_ => unreachable!(),
}
cmd.env("RUSTFLAGS", rustflags);
eprintln!("[BUILD] rustc_codegen_cranelift");
super::utils::spawn_and_wait(cmd);
CG_CLIF
.target_dir(dirs)
.join(&bootstrap_host_compiler.triple)
.join(channel)
.join(get_file_name("rustc_codegen_cranelift", "dylib"))
}
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