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static-librariesxcode10ios12

Xcode 10 static library doesn't include x86_64 arch

I am building a static library to be used with another project I'm working on, and eventually it will be included in a framework I'm developing. When I bring the library into my project, the arm builds work fine, but the simulator builds fail with missing symbols for the x86_64 build. I have set the build architectures in the library to

arm64 arm64e armv7 armv7s x86_64

I have tried various settings, like $(ARCHS_STANDARD) to no avail. I have also tried all of the potential solutions I could find on SO, most of which are pretty old.

Any and all suggestions would be greatly appreciated.

Solution

  • As mentioned in the comments and the edit, you have to build a fat library, but there are steps missing in all of the answers and many of them are badly out of date. Hopefully this will help.

    1. Build a version of the static library for iPhoneOS and iPhoneSimulator.
    2. On the command line, cd to the derived data directory for your project.
    3. You will see directories for the OS and simulator libraries.

    4. Execute the lipo command as below

      lipo -create -output [desired fat library name] [path to iPhoneOS library] [path to iPhoneSimulator library]

    5. Drag the fat library from finder to your target project.

    You can probably automate this with a build script, but I was under a deadline so it was faster to just build and drag. If you come up with a good script, feel free to post it here.

    P.S. The script presented in the Agile Warrior post did not work.