Constant rustc_session::options::desc::parse_link_self_contained

pub const parse_link_self_contained: &str = "one of: `y`, `yes`, `on`, `n`, `no`, `off`, or a list of enabled (`+` prefix) and disabled (`-` prefix) \
        components: `crto`, `libc`, `unwind`, `linker`, `sanitizers`, `mingw`";