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Support deterministic builds by remapping the __FILE__ prefix if the compiler supports it.

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This commit is contained in:
Joel Galenson 2019-08-19 09:30:45 -07:00
parent 8b76d44636
commit cefd832d89
1 changed files with 4 additions and 0 deletions
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4
library/compiler-builtins/build.rs
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@ -423,6 +423,10 @@ 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.
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);