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Merge pull request #309 from jgalenson/file-prefix-map

Support deterministic builds by remapping the __FILE__ prefix if the …
master
Alex Crichton 2 years ago
committed by GitHub
parent
commit
f0b43234dd
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  1. 5
      build.rs

5
build.rs

@ -423,6 +423,11 @@ mod c {
panic!("RUST_COMPILER_RT_ROOT={} does not exist", root.display());
}
// Support deterministic builds by remapping the __FILE__ prefix if the
// compiler supports it. This fixes the nondeterminism caused by the
// use of that macro in lib/builtins/int_util.h in compiler-rt.
cfg.flag_if_supported(&format!("-ffile-prefix-map={}=.", root.display()));
let src_dir = root.join("lib/builtins");
for (sym, src) in sources.map.iter() {
let src = src_dir.join(src);

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