IIRC, the right combination is... 
swi_init(qw(-nosignals -g true))

[download]
The -g true part serves to silence the welcome banner generated by default by the Prolog engine.

In reply to Re^3: YASWI "Prolog System Error: Thread 1" by salva
in thread YASWI "Prolog System Error: Thread 1" by Steve_BZ

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