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I am new in building apps for iOS. There is an excellent answer about the difference between “Architectures” and “Valid Architectures” in Xcode Build Setting here But i still don't understand the meaning of "the binary is targeted " vs "the binary may be built". What are the different between them . Can everyone clarify them ? . Thanks

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BoBo
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Valid Architectures tells the ability and Architectures tells what you want.

Give you an example:

Though you can make armv7/armv7s/arm64 binary (set armv7 armv7s arm64 in Valid Architectures), but the only architecture you want to build is armv7 (set armv7 in Architectures). Intersect Architectures with Valid Architectures is armv7

"The binary is targeted" is the binary you finally build and "the binary may be build" is the binary you can build.

KudoCC
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  • @KudoCC.Thanks for your answer. but is "the binary may be build" needed or not?. When do we use "the binary may be build"? – BoBo Sep 25 '14 at 10:13
  • @BoBo I reference from the comment in the accepted answer of your link from Jeremy W. Sherman. "Most of the time, you don't want VALID_ARCHS. If you were writing inline asm for only certain architectures, you might change VALID_ARCHS to reflect that your code is no longer intended for any but those architectures. Mostly, though, it's just a cue to you from Xcode that indicates which architectures it can build for, and you pick from there for your ARCHS" – KudoCC Sep 25 '14 at 11:09