build_system/build_backend.rs

   1 use std::env;
   2 use std::path::{Path, PathBuf};
   3 use std::process::Command;
   4
   5 pub(crate) fn build_backend(channel: &str, host_triple: &str) -> PathBuf {
   6     let mut cmd = Command::new("cargo");
   7     cmd.arg("build").arg("--target").arg(host_triple).arg("--features").arg("unstable-features");
   8
   9     match channel {
  10         "debug" => {}
  11         "release" => {
  12             cmd.arg("--release");
  13         }
  14         _ => unreachable!(),
  15     }
  16
  17     if cfg!(unix) {
  18         if cfg!(target_os = "macos") {
  19             cmd.env(
  20                 "RUSTFLAGS",
  21                 "-Csplit-debuginfo=unpacked \
  22                 -Clink-arg=-Wl,-rpath,@loader_path/../lib \
  23                 -Zosx-rpath-install-name"
  24                     .to_string()
  25                     + env::var("RUSTFLAGS").as_deref().unwrap_or(""),
  26             );
  27         } else {
  28             cmd.env(
  29                 "RUSTFLAGS",
  30                 "-Clink-arg=-Wl,-rpath=$ORIGIN/../lib ".to_string()
  31                     + env::var("RUSTFLAGS").as_deref().unwrap_or(""),
  32             );
  33         }
  34     }
  35
  36     eprintln!("[BUILD] rustc_codegen_cranelift");
  37     crate::utils::spawn_and_wait(cmd);
  38
  39     Path::new("target").join(host_triple).join(channel)
  40 }