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Generate an older version of dwarf on OSX #11848

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Generate an older version of dwarf on OSX #11848

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8 changes: 8 additions & 0 deletions src/librustc/back/link.rs
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Expand Up @@ -336,6 +336,14 @@ pub mod write {
if sess.time_llvm_passes() { add("-time-passes"); }
if sess.print_llvm_passes() { add("-debug-pass=Structure"); }

// Debuginfo generation in LLVM by default uses a higher version of
// dwarf than osx currently understands. We can instruct LLVM to emit an
// older version of dwarf, however, for OSX to understand. For more info
// see #11352
if sess.targ_cfg.os == abi::OsMacos && sess.opts.debuginfo {
add("-dwarf-version,2");
}

for arg in sess.opts.llvm_args.iter() {
add(*arg);
}
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