You need the compilers&#x2F;toolchain from Xcode, but there are third-party build tools, such as e.g. Buck[1] that combined with an decent editor, let you pretty much avoid the Xcode GUI for a lot of the development cycle.<p>[1]<a href="https:&#x2F;&#x2F;buckbuild.com&#x2F;" rel="nofollow">https:&#x2F;&#x2F;buckbuild.com&#x2F;</a>