Hi Carsten, On 10/26/18 9:22 PM, Carsten Schoenert wrote: > Hi, > > I got a bug report [1] for KiCad in Debian testing/unstable because of a > not working ngspice based simulation in eeschema. > > I was first searching for the reason why the packaging isn't detecting > that the assumed library libngspice.so.0.0.0 was detected as a dependency. > The bugreporter stated that he is needed the package libnsgpice0-dev to > get eeschema working with simulation. So I tried around this information > and the reporter is right. If I start eeschema without this package > installed I get an error message that libngspice.so was not found. > > This is an error in my eyes because eeschema is not looking for the > needed library with the API version it's build against. As libngspice is > using a API version 0 the correct library to look for would be > libngspice.so.0 and not libngspice.so that is normally a symlink to the > most recent version of the library and only used while linking. > Thus we ship -dev packages in Debian with a symlink of a file libfoo.so > to full versioned named library. For libngspice0 this looks like this: > >> $ ls -l /usr/lib/x86_64-linux-gnu/libngspice.so* >> lrwxrwxrwx 1 root root 19 Okt 15 19:50 >> /usr/lib/x86_64-linux-gnu/libngspice.so -> libngspice.so.0.0.0 >> lrwxrwxrwx 1 root root 19 Okt 15 19:50 >> /usr/lib/x86_64-linux-gnu/libngspice.so.0 -> libngspice.so.0.0.0 >> -rw-r--r-- 1 root root 7091024 Okt 15 19:50 >> /usr/lib/x86_64-linux-gnu/libngspice.so.0.0.0 > >> $ dpkg -S /usr/lib/x86_64-linux-gnu/libngspice.so >> libngspice0-dev:amd64: /usr/lib/x86_64-linux-gnu/libngspice.so > $ dpkg -S /usr/lib/x86_64-linux-gnu/libngspice.so.0.0.0 >> libngspice0:amd64: /usr/lib/x86_64-linux-gnu/libngspice.so.0.0.0
What about libngspice.so.0 symlink? Which package ships that? Anyway, it makes sense to request a particular version of the library in case the API changes in the future. > So looking manually at the binaries build from the kicad source by ldd I > can see a lot linked libraries but no library libngspice.so.0! Seems the > library is simply opened by dlopen. So that's the reason why the > packaging isn't adding a dependency on the package libngspice0. You are correct. The library used to be linked with eeschema, but we have faced problems that could be resolved only by reloading the library. I am afraid it has to stay this way for the time being. Regards, Orson > [1] https:/bugs.debian.org/911965 >
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