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Add cargo:rustc-check-cfg to rustc_llvm build script

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This commit is contained in:
Urgau 2022-07-03 16:02:20 +02:00
parent f99f9e48ed
commit 0e82c53028
1 changed files with 29 additions and 33 deletions
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62
compiler/rustc_llvm/build.rs
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@ -4,6 +4,29 @@ use std::fmt::Display;
use std::path::{Path, PathBuf};
use std::process::{Command, Stdio};
const OPTIONAL_COMPONENTS: &[&str] = &[
"x86",
"arm",
"aarch64",
"amdgpu",
"avr",
"m68k",
"mips",
"powerpc",
"systemz",
"jsbackend",
"webassembly",
"msp430",
"sparc",
"nvptx",
"hexagon",
"riscv",
"bpf",
];
const REQUIRED_COMPONENTS: &[&str] =
&["ipo", "bitreader", "bitwriter", "linker", "asmparser", "lto", "coverage", "instrumentation"];
fn detect_llvm_link() -> (&'static str, &'static str) {
// Force the link mode we want, preferring static by default, but
// possibly overridden by `configure --enable-llvm-link-shared`.
@ -76,6 +99,10 @@ fn output(cmd: &mut Command) -> String {
}
fn main() {
for component in REQUIRED_COMPONENTS.iter().chain(OPTIONAL_COMPONENTS.iter()) {
println!("cargo:rustc-check-cfg=values(llvm_component,\"{}\")", component);
}
if tracked_env_var_os("RUST_CHECK").is_some() {
// If we're just running `check`, there's no need for LLVM to be built.
return;
@ -131,42 +158,11 @@ fn main() {
let host = env::var("HOST").expect("HOST was not set");
let is_crossed = target != host;
let optional_components = &[
"x86",
"arm",
"aarch64",
"amdgpu",
"avr",
"m68k",
"mips",
"powerpc",
"systemz",
"jsbackend",
"webassembly",
"msp430",
"sparc",
"nvptx",
"hexagon",
"riscv",
"bpf",
];
let required_components = &[
"ipo",
"bitreader",
"bitwriter",
"linker",
"asmparser",
"lto",
"coverage",
"instrumentation",
];
let components = output(Command::new(&llvm_config).arg("--components"));
let mut components = components.split_whitespace().collect::<Vec<_>>();
components.retain(|c| optional_components.contains(c) || required_components.contains(c));
components.retain(|c| OPTIONAL_COMPONENTS.contains(c) || REQUIRED_COMPONENTS.contains(c));
for component in required_components {
for component in REQUIRED_COMPONENTS {
if !components.contains(component) {
panic!("require llvm component {} but wasn't found", component);
}