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iosobjective-cstatic-librarieslipo

How to check if a static library is built for 64-bit?

I just built a static library for iOS with the build setting for Architectures set to $(ARCHS_STANDARD_INCLUDING_64_BIT).

I want to make sure that the .a library is properly including that architecture, but when i run lipo -info on it, I see:

Architectures in the fat file: library.a are: armv7 armv7s (cputype (16777228) cpusubtype (0))

Does this mean that arm64 isn't included? If the lipo command can't tell me, is there another way to tell?

I'm running Xcode 5 with the latest Command Line Tools installed.

Solution

  • Yes, an arm64 slice is there. To see it, you need to use lipo from the iOS toolchain, not from the host system (which doesn’t know about arm64):

    xcrun -sdk iphoneos lipo -info $(FILENAME)