Function pthread_mutexattr_setpshared 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn pthread_mutexattr_setpshared(
    attr: *mut pthread_mutexattr_t,
    pshared: c_int,
) -> c_int

See https://pubs.opengroup.org/onlinepubs/9799919799/functions/pthread_mutexattr_setpshared.html.