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std: Compile libbacktrace with -fvisibility=hidden

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We don't want these symbols exported from the standard library, this is
just an internal implementation detail of the standard library
currently.

Closes #34984
This commit is contained in:
Alex Crichton 2017-01-22 12:58:56 -08:00
parent a5561ce2b9
commit 3d6f263b2a
2 changed files with 13 additions and 2 deletions
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10
src/liballoc_jemalloc/pthread_atfork_dummy.c
View File

@ -1,3 +1,13 @@
// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// See comments in build.rs for why this exists
int pthread_atfork(void* prefork,
void* postfork_parent,

5
src/libstd/build.rs
View File

@ -87,8 +87,9 @@ fn build_libbacktrace(host: &str, target: &str) {
let compiler = gcc::Config::new().get_compiler();
// only msvc returns None for ar so unwrap is okay
let ar = build_helper::cc2ar(compiler.path(), target).unwrap();
let cflags = compiler.args().iter().map(|s| s.to_str().unwrap())
.collect::<Vec<_>>().join(" ");
let mut cflags = compiler.args().iter().map(|s| s.to_str().unwrap())
.collect::<Vec<_>>().join(" ");
cflags.push_str(" -fvisibility=hidden");
run(Command::new("sh")
.current_dir(&build_dir)
.arg(src_dir.join("configure").to_str().unwrap()