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Compatibility layer
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<p>In <a href="/facts/Software_engineering/KX6cE9kz">software engineering</a>, a compatibility layer is an interface that allows <a href="/facts/Executable/VSst9eLA">binaries</a> for a legacy or foreign system to run on a host system. This translates <a href="/facts/System_call/NW44AFJr">system calls</a> for the foreign system into native system calls for the host system. With some <a href="/facts/Library_(computing)/xRzL3P7q">libraries</a> for the foreign system, this will often be sufficient to run foreign binaries on the host system. A hardware compatibility layer consists of tools that allow <a href="/facts/Hardware_emulation/EhDA3xRG">hardware emulation</a>. </p>