Porting weston-1.2.1 and wayland-1.2.1 to VxWorks reports an error

Hi Maintainer, We are doing a challenging job to get weston running on VxWorks system. Let me briefly introduce VxWorks which is a real-time operating system and supports POSIX API, But it does not support graphical desktops natively. most of our work is going well now, weston has successfully run on VxWorks, but when I start a wayand client, it reports an error. Can you help me analyze the cause of the error, I know the code is very unfamiliar from 10 years ago, but it is indeed a helpless move. here is the log