How to add xtensa in newlib

[左应鹏]

Hello

    I’m using newlib in my project( https://github.com/long568/MadOS <https://github.com/long568/MadOS> ).
    My choice : newlib-3.1.0 + gcc-7.4.0
    I’s easy to build them for ARM, but newlib has NOT supported Xtensa yet.
    I tried so many methods to add xtensa in newlib, but ultimately I failed.
    I would appreciate it if you give me some advice or guidance.

Best regards