Where's the Windows or Linux version of Xcode 7, then? Or a version of OSX licensed to run on the capable hardware that I already own? I suppose I could spend $500 on a Mac Mini, but then we're back to tokenizerrr's question.
Oh? Where do I find the docs and the download link? It has to run on Linux laptop or my Windows desktop, both which have perfectly capable hardware. I am not buying a Mac for the privilege of developing software for an iPhone.
A Hackintosh is perfectly viable. Assuming you can boot the installer(free from the Mac App Store), it's trivial to set up the necessary bootloader and extensions(certainly easier that making Windows dual boot nicely).