The of-ngspice project fails with
/usr/bin/ld: cannot find -lngspice
collect2: error: ld returned 1 exit status
A search for libngspice fails to turn anything up – so perhaps we’re not building the library? Checking the ngspice project output there is no mention of a library there. However, there is a ‘–with-ngshared’ option to configure, which seems like what we want.
Fixed in build 17.