ext/jack requires jack2 to be built
ext/jack specifically only builds against jack2, although the code is also meant to be buildable against jack1. As the API of both versions is the same, it shouldn't matter against which to build.
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ext/jack specifically only builds against jack2, although the code is also meant to be buildable against jack1. As the API of both versions is the same, it shouldn't matter against which to build.