| use crate::spec::{LinkArgs, LinkerFlavor, RelroLevel, TargetOptions}; |
| use std::default::Default; |
| |
| pub fn opts() -> TargetOptions { |
| let mut args = LinkArgs::new(); |
| args.insert( |
| LinkerFlavor::Gcc, |
| 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(), |
| ], |
| ); |
| |
| 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, |
| has_elf_tls: true, |
| ..Default::default() |
| } |
| } |