Sanity check compile-time vs simulation-time options
If user compiles without +define+DEBUG but then requests +vcdfile at simulation time, that request would be silently ignored. This changes it to a fatal error. It's good philosophy to treat plusargs like +vcdfile as commands, not suggestions, and die immediately if they cannot be honored, instead of silently ignoring them. Otherwise the user sits through the entire simulation and then is left scratching his head wondering where his waveforms are.
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@ -67,7 +67,15 @@ module TestDriver;
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`define VCDPLUSCLOSE $dumpoff;
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`endif
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`else
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// No +define+DEBUG
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`define VCDPLUSCLOSE
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if ($test$plusargs("vcdplusfile=") || $test$plusargs("vcdfile="))
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begin
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$fdisplay(stderr, "Error: +vcdfile or +vcdplusfile requested but compile did not have +define+DEBUG enabled");
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$fatal;
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end
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`endif
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end
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