To build your own copy of HWIF.LIB
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Make sure that the OOP component of the SDK has been installed,
as well as the CORE and HWIFSRC components.

In the HWIFSRC directory, type "MAKE".

The HWIF.LIB created should differ in only four bytes - a date stamp in
the library header - from that installed into \SIBOSDK\LIB from the HWIF
component of the SDK.