src/librustc_back/target/linux_base.rs

   1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 use target::TargetOptions;
  12 use std::default::Default;
  13
  14 pub fn opts() -> TargetOptions {
  15     TargetOptions {
  16         dynamic_linking: true,
  17         executables: true,
  18         morestack: true,
  19         linker_is_gnu: true,
  20         has_rpath: true,
  21         pre_link_args: vec![
  22             // We want to be able to strip as much executable code as possible
  23             // from the linker command line, and this flag indicates to the
  24             // linker that it can avoid linking in dynamic libraries that don't
  25             // actually satisfy any symbols up to that point (as with many other
  26             // resolutions the linker does). This option only applies to all
  27             // following libraries so we're sure to pass it as one of the first
  28             // arguments.
  29             "-Wl,--as-needed".to_string(),
  30         ],
  31         position_independent_executables: true,
  32         .. Default::default()
  33     }
  34 }