Install libhawknl-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libhawknl-dev
Description:
Hawk game oriented network library API (development headers)
HawkNL is a free, open source, game oriented network API. . HawkNL (NL) is a fairly low level API, a wrapper over Berkeley/Unix Sockets and Winsock. But NL also provides other features including support for: * Multiple operating systems. * Groups of sockets * Socket statistics * High accuracy timer * CRC functions * Macros to read and write data to packets with endian conversion * Multiple network transports. . This package contains the development libraries and headers.
Homepage: http://hawksoft.com/hawknl/
Version: 1.6.8+dfsg2-1
Section: universe/libdevel