61 lines
1.3 KiB
Rust
61 lines
1.3 KiB
Rust
use std::process::Command;
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use proc_macro::TokenStream;
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use quote::quote;
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use crate::utils::get_crate_name;
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pub(super) fn flags_capture(args: TokenStream) -> TokenStream {
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let Some(crate_name) = get_crate_name() else {
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return args;
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};
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let flag = std::env::args().collect::<Vec<_>>();
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let flag_len = flag.len();
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let ret = quote! {
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pub static RUSTC_FLAGS: [&str; #flag_len] = [#( #flag ),*];
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#[tuwunel_core::ctor]
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fn _set_rustc_flags() {
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tuwunel_core::info::rustc::FLAGS.lock().expect("locked").insert(#crate_name, &RUSTC_FLAGS);
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}
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// static strings have to be yanked on module unload
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#[tuwunel_core::dtor]
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fn _unset_rustc_flags() {
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tuwunel_core::info::rustc::FLAGS.lock().expect("locked").remove(#crate_name);
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}
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};
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ret.into()
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}
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pub(super) fn version(args: TokenStream) -> TokenStream {
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let Some(_) = get_crate_name() else {
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return args;
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};
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let rustc_path = std::env::args()
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.next()
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.expect("Path to rustc executable");
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let version = Command::new(rustc_path)
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.args(["-V"])
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.output()
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.map(|output| {
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str::from_utf8(&output.stdout)
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.map(str::trim)
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.map(String::from)
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.ok()
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})
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.ok()
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.flatten()
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.unwrap_or_default();
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let ret = quote! {
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static RUSTC_VERSION: &'static str = #version;
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};
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ret.into()
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}
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