haiku: Basic fixes to build under Haiku

YosysHQ / yosys

Yosys Open SYnthesis Suite

https://yosyshq.net/yosys/

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Open kallisti5 opened 3 weeks ago

kallisti5 commented 3 weeks ago

What are the reasons/motivation for this change?

Adding some basic build support for the Haiku operating system.

Explain how this is achieved.

Correcting some missing requirements for non-posix API calls.