Is iOS 4.3 with armv7 the lowest you can go if you

问题:

I read on the internet that iOS 4.3 with armv7 is the lowest you can go if you want to support iPhone 5. So, if I want my app to run on iPhone 5, then do I need to set the deployment target as iOS 4.3 and set the architecture as armv7?

I couldn't find an official documentation for this. Could you correct this information if it's wrong?

UPDATE: I've found the answer in the Xcode 4.5 GM seed Release Notes documentation of Apple:

Changes in Xcode 4.5:

- Support removed for armv6 Xcode 4.5 and later does not support generating armv6 binaries.

- Minimum supported deployment target is iOS 4.3 The minimum supported deployment target with Xcode 4.5 or later is iOS 4.3

回答1:

There doesn't seem to be any official statement on this, but it's pretty clear if you take a look at Xcode 4.5. It's also a logical step forward as last armv6 device (iPhone 3G) has been out of sale for over two years and without software updates for almost two years as well.

Note: as of posting this answer, an unofficial way to support both armv6 and armv7s has been found here: How to support both armv6 and armv7s for release build in xcode 4.5

回答2:

This is only half the truth; the other half is you can actually do combine an iOS 4.0/armv6 build into your iOS6/armv7(s) build.

This process is described here: How to support both armv6 and armv7s for release build in xcode 4.5