Re: Xcode 4.6 and iOS 7 SDKs?
Re: Xcode 4.6 and iOS 7 SDKs?
- Subject: Re: Xcode 4.6 and iOS 7 SDKs?
- From: Jens Alfke <email@hidden>
- Date: Fri, 27 Sep 2013 22:33:29 -0700
On Sep 27, 2013, at 10:18 PM, Chris Hanson < email@hidden> wrote: Xcode has been self-contained since Xcode 2.5 specifically to support multiple installations: Prior to Xcode 4.3, you could have multiple /Developer folders installed. With Xcode 4.3 and later, everything is inside Xcode.app, and you can have multiple Xcode.app versions installed.
Agreed. The part I’m not sure of, though, is how you can do command-line builds with multiple versions of Xcode. This just came up in a meeting — I want our build-bots to build my stuff with Xcode 5, but we have some other projects that need to keep building in their existing environment to avoid unnecessary changes. I wasn’t sure how to invoke two different versions of xcodebuild from a shell or a Jenkins config. (xcode-select isn’t the answer, because it changes global state, but two build scripts might be running at the same time.)
As long as you're using SCM, you'll be able to revert any changes that do prevent you from using multiple versions of Xcode on a project. Those kinds of changes, however should only happen in response to user action. (For example, by upgrading a xib file to Xcode 5 format or using iOS 7 features.
In general yes, but there seems to have been some interim beta release of Xcode 5 that silently upgraded xibs without asking, because later on I committed some projects and Xcode 4 users complained that the xibs wouldn’t build or open.
—Jens |
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