Daniel Ayers

Confirming that the build fails as above on Fedora 35 and the problem is resolved by using `make CFLAGS="-fcommon -O2"`.

This is because (on my system at least) the name of the swig binary has changed from `swig3.0` to just `swig` - see `build.sh` https://github.com/tmolteno/python-necpp/blob/master/PyNEC/build.sh#L17 . If you look carefully...

> ... is there somewhere that provides documentation of the `pl_card` ... PyNEC is a Python wrapper around a C++ library that implements a very old (c. 1980) input &...

> -Undocumented arguments in wire method. What are they? The last two parameters pertain to tapered wires, for non-tapered wires set both to 1.0. The Python implementation is just a...

> This is my first time attempting to use NEC-2, and I second the request -- I'd love to use this library but without documentation of the function inputs, it's...

> On line 17 of `build.sh` change `swig3.0` to `swig-3`. Also, if you don't already have swig3 installed, remember to install it from the archive, as you specifically need this...