You will not be able to get away from the need for OSX regardless of structure due to signing, etc.
Before I bought my epic 2007 MacBook for € 300, I used VmWare to launch OSX and Xcode access as such. There are no promises about the legality of the procedure, but it is pretty much what, Hackintosh or buying a Mac.
In terms of legal development, iOS is OS X or nothing. Simple and simple.
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