Accessing RS-232 serial port under Cygwin

[ask.teddy]

Hello,

I want to write a C program which runs on a desktop computer and talks
to a device over the RS-232 serial port. I'm using WinXP + Cygwin, and
sometimes Ubuntu Linux. I hope this program can be ported to either OS
with the least modification at the source level. How can I use a C
program to access the serial port under Cygwin?

Many thanks.

Ying

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