Portaudio problem

I've had this working before because I built FreeDV for windows 32 and 64 bit before, but even though the package builds "fine" the resultant DLL doesn't seem to work.

dllexp in Windows shows no functions and the program I'm trying to run, fldigi, fails with an error message that libportaudio-2.dll is broken.

Nothing in the build log is jumping out at me...

Here's a link to the Review Request anyway, but I need to get this fixed before it's built in Fedora...

https://bugzilla.redhat.com/show_bug.cgi?id=1835852

Thanks, Richard