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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,
.. Default::default()
}
}
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