bjoernager/rust
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Generate a version script for linkers on Linux.

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This commit is contained in:
Michael Woerister 2016-11-30 13:16:53 -05:00
parent 133aeacf2f
commit e48160f6e4
1 changed files with 23 additions and 26 deletions
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49
src/librustc_trans/back/linker.rs
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@ -253,7 +253,20 @@ impl<'a> Linker for GnuLinker<'a> {
let mut arg = OsString::new();
let path = tmpdir.join("list");
if self.sess.target.target.options.is_like_solaris {
if self.sess.target.target.options.is_like_osx {
// Write a plain, newline-separated list of symbols
let res = (|| -> io::Result<()> {
let mut f = BufWriter::new(File::create(&path)?);
for sym in self.info.exports[&crate_type].iter() {
writeln!(f, "_{}", sym)?;
}
Ok(())
})();
if let Err(e) = res {
self.sess.fatal(&format!("failed to write lib.def file: {}", e));
}
} else {
// Write an LD version script
let res = (|| -> io::Result<()> {
let mut f = BufWriter::new(File::create(&path)?);
writeln!(f, "{{\n global:")?;
@ -266,33 +279,17 @@ impl<'a> Linker for GnuLinker<'a> {
if let Err(e) = res {
self.sess.fatal(&format!("failed to write version script: {}", e));
}
arg.push("-Wl,-M,");
arg.push(&path);
} else {
let prefix = if self.sess.target.target.options.is_like_osx {
"_"
} else {
""
};
let res = (|| -> io::Result<()> {
let mut f = BufWriter::new(File::create(&path)?);
for sym in self.info.exports[&crate_type].iter() {
writeln!(f, "{}{}", prefix, sym)?;
}
Ok(())
})();
if let Err(e) = res {
self.sess.fatal(&format!("failed to write lib.def file: {}", e));
}
if self.sess.target.target.options.is_like_osx {
arg.push("-Wl,-exported_symbols_list,");
} else {
arg.push("-Wl,--retain-symbols-file=");
}
arg.push(&path);
}
if self.sess.target.target.options.is_like_osx {
arg.push("-Wl,-exported_symbols_list,");
} else if self.sess.target.target.options.is_like_solaris {
arg.push("-Wl,-M,");
} else {
arg.push("-Wl,--version-script=");
}
arg.push(&path);
self.cmd.arg(arg);
}