mirror of
https://github.com/cloud-hypervisor/cloud-hypervisor.git
synced 2024-10-02 19:45:46 +00:00
d5f5648b37
We use cargo vendor to generate a .cargo/config file and the vendor directory. Vendoring allows us to lock our dependencies and to modify them easily from the top level Cargo.toml. We vendor all dependencies, including the crates.io ones, which allows for network isolated builds. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
73 lines
1.7 KiB
Rust
73 lines
1.7 KiB
Rust
use std::env;
|
|
use std::process::Command;
|
|
use std::str::{self, FromStr};
|
|
|
|
// The rustc-cfg strings below are *not* public API. Please let us know by
|
|
// opening a GitHub issue if your build environment requires some way to enable
|
|
// these cfgs other than by executing our build script.
|
|
fn main() {
|
|
let compiler = match rustc_version() {
|
|
Some(compiler) => compiler,
|
|
None => return,
|
|
};
|
|
|
|
if compiler.minor >= 19 {
|
|
println!("cargo:rustc-cfg=syn_can_use_thread_id");
|
|
}
|
|
|
|
if compiler.minor >= 20 {
|
|
println!("cargo:rustc-cfg=syn_can_use_associated_constants");
|
|
}
|
|
|
|
// Macro modularization allows re-exporting the `quote!` macro in 1.30+.
|
|
if compiler.minor >= 30 {
|
|
println!("cargo:rustc-cfg=syn_can_call_macro_by_path");
|
|
}
|
|
|
|
if !compiler.nightly {
|
|
println!("cargo:rustc-cfg=syn_disable_nightly_tests");
|
|
}
|
|
}
|
|
|
|
struct Compiler {
|
|
minor: u32,
|
|
nightly: bool,
|
|
}
|
|
|
|
fn rustc_version() -> Option<Compiler> {
|
|
let rustc = match env::var_os("RUSTC") {
|
|
Some(rustc) => rustc,
|
|
None => return None,
|
|
};
|
|
|
|
let output = match Command::new(rustc).arg("--version").output() {
|
|
Ok(output) => output,
|
|
Err(_) => return None,
|
|
};
|
|
|
|
let version = match str::from_utf8(&output.stdout) {
|
|
Ok(version) => version,
|
|
Err(_) => return None,
|
|
};
|
|
|
|
let mut pieces = version.split('.');
|
|
if pieces.next() != Some("rustc 1") {
|
|
return None;
|
|
}
|
|
|
|
let next = match pieces.next() {
|
|
Some(next) => next,
|
|
None => return None,
|
|
};
|
|
|
|
let minor = match u32::from_str(next) {
|
|
Ok(minor) => minor,
|
|
Err(_) => return None,
|
|
};
|
|
|
|
Some(Compiler {
|
|
minor: minor,
|
|
nightly: version.contains("nightly"),
|
|
})
|
|
}
|