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(
   6     channel: &str,
   7     host_triple: &str,
   8     use_unstable_features: bool,
   9 ) -> PathBuf {
  10     let mut cmd = Command::new("cargo");
  11     cmd.arg("build").arg("--target").arg(host_triple);
  12
  13     if use_unstable_features {
  14         cmd.arg("--features").arg("unstable-features");
  15     }
  16
  17     match channel {
  18         "debug" => {}
  19         "release" => {
  20             cmd.arg("--release");
  21         }
  22         _ => unreachable!(),
  23     }
  24
  25     if cfg!(unix) {
  26         if cfg!(target_os = "macos") {
  27             cmd.env(
  28                 "RUSTFLAGS",
  29                 "-Csplit-debuginfo=unpacked \
  30                 -Clink-arg=-Wl,-rpath,@loader_path/../lib \
  31                 -Zosx-rpath-install-name"
  32                     .to_string()
  33                     + env::var("RUSTFLAGS").as_deref().unwrap_or(""),
  34             );
  35         } else {
  36             cmd.env(
  37                 "RUSTFLAGS",
  38                 "-Clink-arg=-Wl,-rpath=$ORIGIN/../lib ".to_string()
  39                     + env::var("RUSTFLAGS").as_deref().unwrap_or(""),
  40             );
  41         }
  42     }
  43
  44     eprintln!("[BUILD] rustc_codegen_cranelift");
  45     crate::utils::spawn_and_wait(cmd);
  46
  47     Path::new("target").join(host_triple).join(channel)
  48 }