| // Copyright 2014 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. |
| |
| use target::TargetOptions; |
| use std::default::Default; |
| |
| pub fn opts() -> TargetOptions { |
| TargetOptions { |
| dynamic_linking: true, |
| executables: true, |
| linker_is_gnu: true, |
| has_rpath: true, |
| pre_link_args: vec![ |
| // We want to be able to strip as much executable code as possible |
| // from the linker command line, and this flag indicates to the |
| // linker that it can avoid linking in dynamic libraries that don't |
| // actually satisfy any symbols up to that point (as with many other |
| // resolutions the linker does). This option only applies to all |
| // following libraries so we're sure to pass it as one of the first |
| // arguments. |
| "-Wl,--as-needed".to_string(), |
| |
| // Always enable NX protection when it is available |
| "-Wl,-z,noexecstack".to_string(), |
| ], |
| position_independent_executables: true, |
| exe_allocation_crate: super::maybe_jemalloc(), |
| has_elf_tls: true, |
| .. Default::default() |
| } |
| } |