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Macro BOOST_ASIO_HAS_FILE not defined about asio HOT 2 OPEN

JRazek avatar JRazek commented on June 11, 2024
Macro BOOST_ASIO_HAS_FILE not defined

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Comments (2)

Techmeology avatar Techmeology commented on June 11, 2024 1

I ran into the same issue (also on Arch). I was able to work around it by defining BOOST_ASIO_HAS_IO_URING and linking against liburing.

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Techmeology avatar Techmeology commented on June 11, 2024

It turns out you should also give BOOST_ASIO_DISABLE_EPOLL, otherwise you can get epoll re-registration: File exists [system:17] under certain circumstances when forking.

From the revision history:

The backend is disabled by default, and must be enabled by defining both ASIO_HAS_IO_URING and ASIO_DISABLE_EPOLL.

Simply defining ASIO_HAS_IO_URING alone will enable the backend without using it for the existing I/O objects. This allows it to be used for I/O objects that require io_uring support, such as files.

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