equivalent to linux/serial.h?

Hello,

Just attempting to compile SDRAngel from source and I'm getting some errors
in the process.

The latest is: "linux/serial.h" missing. Is there an equivalent I can
point to on OpenBSD?

I'm also having difficulties with the dab-cmdline library. The compile goes
haywire with a bunch of mismatches in header definitions. Is there an
equivalent to dab-cmdline in OBSD??


Tia!