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use crate::spec::{cvs, FramePointer, LinkerFlavor, TargetOptions};
pub fn opts() -> TargetOptions {
let late_link_args = TargetOptions::link_args(
LinkerFlavor::Gcc,
&[
// The illumos libc contains a stack unwinding implementation, as
// does libgcc_s. The latter implementation includes several
// additional symbols that are not always in base libc. To force
// the consistent use of just one unwinder, we ensure libc appears
// after libgcc_s in the NEEDED list for the resultant binary by
// ignoring any attempts to add it as a dynamic dependency until the
// very end.
// FIXME: This should be replaced by a more complete and generic
// mechanism for controlling the order of library arguments passed
// to the linker.
"-lc",
// LLVM will insert calls to the stack protector functions
// "__stack_chk_fail" and "__stack_chk_guard" into code in native
// object files. Some platforms include these symbols directly in
// libc, but at least historically these have been provided in
// libssp.so on illumos and Solaris systems.
"-lssp",
],
);
TargetOptions {
os: "illumos".into(),
dynamic_linking: true,
has_rpath: true,
families: cvs!["unix"],
is_like_solaris: true,
linker_is_gnu: false,
limit_rdylib_exports: false, // Linker doesn't support this
frame_pointer: FramePointer::Always,
eh_frame_header: false,
late_link_args,
// While we support ELF TLS, rust requires a way to register
// cleanup handlers (in C, this would be something along the lines of:
// void register_callback(void (*fn)(void *), void *arg);
// (see src/libstd/sys/unix/fast_thread_local.rs) that is currently
// missing in illumos. For now at least, we must fallback to using
// pthread_{get,set}specific.
//has_thread_local: true,
// FIXME: Currently, rust is invoking cc to link, which ends up
// causing these to get included twice. We should eventually transition
// to having rustc invoke ld directly, in which case these will need to
// be uncommented.
//
// We want XPG6 behavior from libc and libm. See standards(5)
//pre_link_objects_exe: vec![
// "/usr/lib/amd64/values-Xc.o".into(),
// "/usr/lib/amd64/values-xpg6.o".into(),
//],
..Default::default()
}
}
|
