🚀 go-pugleaf

>SIGUSR2 is a signal reserved for use by the user in System V.
>From Release 3.2 for the 3B2, it is
>
>	#define	SIGUSR2	17	/* user defined signal 2 */

And in 4.3BSD, where it's

	#define SIGUSR2 31	/* user defined signal 2 */

>Since you seem to have little experience with C programming and UNIX
>internals, I would suggest you find someone more knowledgeable.  It seems
>that what you need to do is analyze the code, find out what signals must be
>left alone...

...or try just #defining SIGUSR2 and 31 and see how it goes.  If the
code is supposed to work under 4.3BSD, this will probably fix that part,
although there may be other 4.3BSDisms not in 4.2BSD that it depends on.
If the code wasn't made to work under 4.3BSD, you may have more work to
do (or you may just get lucky).