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// 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. use spec::{LinkArgs, LinkerFlavor, TargetOptions, RelroLevel}; pub fn opts() -> TargetOptions { let mut args = LinkArgs::new(); args.insert(LinkerFlavor::Gcc, vec![ "-Wl,-Bstatic".to_string(), "-Wl,--no-dynamic-linker".to_string(), "-Wl,--eh-frame-hdr".to_string(), "-Wl,--gc-sections".to_string(), ]); TargetOptions { executables: true, target_family: None, linker_is_gnu: true, pre_link_args: args, position_independent_executables: true, // As CloudABI only supports static linkage, there is no need // for dynamic TLS. The C library therefore does not provide // __tls_get_addr(), which is normally used to perform dynamic // TLS lookups by programs that make use of dlopen(). Only the // "local-exec" and "initial-exec" TLS models can be used. // // "local-exec" is more efficient than "initial-exec", as the // latter has one more level of indirection: it accesses the GOT // (Global Offset Table) to obtain the effective address of a // thread-local variable. Using a GOT is useful only when doing // dynamic linking. tls_model: "local-exec".to_string(), relro_level: RelroLevel::Full, exe_allocation_crate: super::maybe_jemalloc(), .. Default::default() } }