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SdFatEx object not present in greiman/SdFat 2.1.2

I am trying to take over an Arduino project that someone else did. It uses extended fat, but the SdFatEx is no longer present in latest release of greimans SdFat library. If i go back to 1.1.4 version or earlier the class is defined.
The problem is i am getting a “sys/termios.h” not included error. I understand termios.h is part of Python and i can go to a “termios.h” file. I just get an error with an identifier

cfsetispeed(&Settings, B460800);

The bottom line question is: Is this because its impossible to use extended files nowadays or do i just have to find the correct 1.x.x verison of the library?