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Question about sentence in Asio documentation.

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Szyk Cech

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Jul 7, 2019, 6:46:24 AM7/7/19
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Hi!
On the page:
http://think-async.com/Asio/asio-1.12.2/doc/asio/overview/serial_ports.html
There is sentence wchis is pure nonsense to me:

"For Windows, serial ports are only available at compile time when the
I/O completion port backend is used"

What does it mean? For Windows serial port is available when program is
compiling? How can it be run when it is not fully compiled?
I never heard about such conception!

Please explain this to me.

thanks in advance
and best regards
Szyk Cech

Öö Tiib

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Jul 7, 2019, 12:05:14 PM7/7/19
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The macro ASIO_HAS_SERIAL_PORT (useful for compile-time decisions)
will not be defined when the preconditions for availability
of serial ports are not met.

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