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Rollup merge of #32729 - pierzchalski:build_helper_suffix, r=alexcrichton

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Change build helper to modify suffix

The current implementation of [gcc](https://crates.io/crates/gcc) defaults to using the ```CC``` environment variable to determine the compiler. The current global-find-replace in ```build_helper``` causes issues for projects using tools like ```ccache``` if they try to integrate libstd into their build system.

Almost all cross-compiler toolchains have the tool name as a suffix of the filename, so changing this to suffix-replacement instead of global-replacement should be fine.
This commit is contained in:
Manish Goregaokar 2016-04-07 23:26:17 +05:30
commit ef8635ec82
1 changed files with 9 additions and 3 deletions
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12
src/build_helper/lib.rs
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@ -43,10 +43,16 @@ pub fn cc2ar(cc: &Path, target: &str) -> PathBuf {
if target.contains("musl") || target.contains("msvc") {
PathBuf::from("ar")
} else {
let parent = cc.parent().unwrap();
let file = cc.file_name().unwrap().to_str().unwrap();
cc.parent().unwrap().join(file.replace("gcc", "ar")
.replace("cc", "ar")
.replace("clang", "ar"))
for suffix in &["gcc", "cc", "clang"] {
if let Some(idx) = file.rfind(suffix) {
let mut file = file[..idx].to_owned();
file.push_str("ar");
return parent.join(&file);
}
}
parent.join(file)
}
}