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rustc_llvm: re-run build script if config.toml changes

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This commit is contained in:
Venkata Giri Reddy 2017-06-04 18:35:57 +00:00
parent 8f66fafebd
commit 40f8536449
2 changed files with 9 additions and 0 deletions
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4
src/bootstrap/compile.rs
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@ -276,6 +276,10 @@ pub fn rustc(build: &Build, target: &str, compiler: &Compiler) {
if build.is_rust_llvm(target) {
cargo.env("LLVM_RUSTLLVM", "1");
}
if let Some(ref cfg_file) = build.flags.config {
let cfg_path = t!(PathBuf::from(cfg_file).canonicalize());
cargo.env("CFG_LLVM_TOML", cfg_path.into_os_string());
}
cargo.env("LLVM_CONFIG", build.llvm_config(target));
let target_config = build.config.target_config.get(target);
if let Some(s) = target_config.and_then(|c| c.llvm_config.as_ref()) {

5
src/librustc_llvm/build.rs
View File

@ -61,6 +61,11 @@ fn main() {
println!("cargo:rerun-if-changed={}", llvm_config.display());
if let Some(cfg_toml) = env::var_os("CFG_LLVM_TOML") {
let cfg_path = PathBuf::from(cfg_toml);
println!("cargo:rerun-if-changed={}", cfg_path.display());
}
// Test whether we're cross-compiling LLVM. This is a pretty rare case
// currently where we're producing an LLVM for a different platform than
// what this build script is currently running on.