| //! Determine rustc version `proc-macro-srv` (and thus the sysroot ABI) is |
| //! build with and make it accessible at runtime for ABI selection. |
| |
| use std::{env, process::Command}; |
| |
| fn main() { |
| println!("cargo::rustc-check-cfg=cfg(rust_analyzer)"); |
| |
| let rustc = env::var("RUSTC").expect("proc-macro-srv's build script expects RUSTC to be set"); |
| let output = Command::new(rustc).arg("--version").output().expect("rustc --version must run"); |
| let version_string = std::str::from_utf8(&output.stdout[..]) |
| .expect("rustc --version output must be UTF-8") |
| .trim(); |
| println!("cargo::rustc-env=RUSTC_VERSION={}", version_string); |
| } |