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Re: critical bug in Spice simulator - feedback from OSX devs needed

 

Hi Tom-

Relevant discussion here:
https://lists.launchpad.net/kicad-developers/msg25762.html

FWIW, I don't think there's a technical reason why.

-S

2018-03-06 9:44 GMT-08:00 Tomasz Wlostowski <tomasz.wlostowski@xxxxxxx>:

> Hi,
>
> I've been trying to fix [1] without success: ngspice will not load
> another circuit if the current one contains fatal errors. Under some
> circumstances, this segfaults KiCad.
>
> The only solution I see is to bring back dynamic
> (dlopen()/wxDynamicLibrary) loading of ngspice DLL every time the
> simulator is launched, since unloading and reloading again resets
> ngspice's internal state and releases all allocated resources. The early
> versions of the simulator had worked like this but later it was changed
> to traditional linking reportedly due to some issues on OSX with dynamic
> library loading. I can't find any trace of information about these
> DLL-related issues - so I'm calling our Mac devs here to reply if
> anybody remembers why this change was done.
>
> If no one gives a solid reason to stay with a hard-linked ngspice DLL,
> I'll revert the ngspice plugin to use wxDynamicLibrary.
>
> Tom
>
> [1] https://bugs.launchpad.net/kicad/+bug/1753092
>
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References