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Pass -Werror when building the LLVM wrapper #143807

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Pass -Werror when building the LLVM wrapper #143807

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5 changes: 5 additions & 0 deletions compiler/rustc_llvm/build.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -167,6 +167,11 @@ fn main() {
let cxxflags = output(&mut cmd);
let mut cfg = cc::Build::new();
cfg.warnings(false);

// Prevent critical warnings when we're compiling from rust-lang/rust CI
if std::env::var_os("CI").is_some() {
cfg.warnings_into_errors(true);
}
for flag in cxxflags.split_whitespace() {
// Ignore flags like `-m64` when we're doing a cross build
if is_crossed && flag.starts_with("-m") {
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