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// 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 spec::{LinkArgs, LinkerFlavor, TargetOptions, RelroLevel}; use std::default::Default; pub fn opts() -> TargetOptions { let mut args = LinkArgs::new(); args.insert(LinkerFlavor::Gcc, vec![ // GNU-style linkers will use this to omit linking to libraries // which don't actually fulfill any relocations, but only for // libraries which follow this flag. Thus, use it before // specifying libraries to link to. "-Wl,--as-needed".to_string(), // Always enable NX protection when it is available "-Wl,-z,noexecstack".to_string(), ]); TargetOptions { dynamic_linking: true, executables: true, target_family: Some("unix".to_string()), linker_is_gnu: true, has_rpath: true, pre_link_args: args, position_independent_executables: true, relro_level: RelroLevel::Full, exe_allocation_crate: super::maybe_jemalloc(), .. Default::default() } }