my research in a nutshell: not compatible or supported in linux, its ok in vmware, and sucks in wine. You know all this.
I did do a gurgle search that looked like this "compile polar flowsync linux' and got some interesting results.
A couple reddit attempts.
And Github 'bridge' programs targz's for polar like 'bipolar' etc. Good luck to you, it's a heavy-duty app as far as what it can do.