Swift fat framework w/Objective-C Cocoapod

Question

I've built a framework in Swift. The framework uses Cocoapods, one of the pods is written in Objective C.

I also use a custom script to make the framework a fat framework so it supports 32/64 bit systems. (This runs in a separate target on the project and I'm wondering if that has something to do with it?)

UNIVERSAL_OUTPUTFOLDER=${BUILD_DIR}/${CONFIGURATION}-universal

if [ "true" == ${ALREADYINVOKED:-false} ]
then
echo "RECURSION: Detected, stopping"
else
export ALREADYINVOKED="true"

// Step 1. Build Device and Simulator versions
xcodebuild -target "${PROJECT_NAME}" ONLY_ACTIVE_ARCH=NO -configuration ${CONFIGURATION} -sdk iphoneos  BUILD_DIR="${BUILD_DIR}"   BUILD_ROOT="${BUILD_ROOT}" clean build
xcodebuild -target "${PROJECT_NAME}" -configuration ${CONFIGURATION} -sdk iphonesimulator ONLY_ACTIVE_ARCH=NO BUILD_DIR="${BUILD_DIR}" BUILD_ROOT="${BUILD_ROOT}" clean build

//Step 2. Copy the framework structure (from iphoneos build) to the universal folder
cp -R "${BUILD_DIR}/${CONFIGURATION}-iphoneos/${PROJECT_NAME}.framework" "${UNIVERSAL_OUTPUTFOLDER}/"

// Step 3. Copy Swift modules (from iphonesimulator build) to the copied framework directory
cp -R "${BUILD_DIR}/${CONFIGURATION}-iphonesimulator/${PROJECT_NAME}.framework/Modules/${PROJECT_NAME}.swiftmodule/." "${UNIVERSAL_OUTPUTFOLDER}/${PROJECT_NAME}.framework/Modules/${PROJECT_NAME}.swiftmodule"

// Step 4. Create universal binary file using lipo and place the combined executable in the copied framework directory
lipo -create -output "${UNIVERSAL_OUTPUTFOLDER}/${PROJECT_NAME}.framework/${PROJECT_NAME}" "${BUILD_DIR}/${CONFIGURATION}-iphonesimulator/${PROJECT_NAME}.framework/${PROJECT_NAME}" "${BUILD_DIR}/${CONFIGURATION}-iphoneos/${PROJECT_NAME}.framework/${PROJECT_NAME}"

// Step 5. Convenience step to copy the framework to the project's directory
cp -R "${UNIVERSAL_OUTPUTFOLDER}/${PROJECT_NAME}.framework" "${PROJECT_DIR}"

// Step 6. Convenience step to open the project's directory in Finder
open "${PROJECT_DIR}"

fi

When I create this fat framework and put it into a project I'd like to use it on the compiler always fails b/c the project can't see the objective C cocoa pod module.

clang: error: linker command failed with exit code 1 (use -v to see invocation)
ld: framework not found Pusher for architecture x86_64

It is not found for any architecture when I change the build platform.

Any solution where I can produce a framework that I can use in a separate Xcode project (for all iOS or OS X) would be awesome.

Answer 1

You can't run xcodebuild with -target when using CocoaPods. When you use -target, Xcode will only consider the active project and fail to pull in the Pod dependencies, similar to if you just opened the project file in Xcode and tried building.

You should be running xcodebuild -workspace "${PROJECT_NAME}.xcworkspace" -scheme "${PROJECT_NAME}" ..., assuming that CocoaPods generated the workspace and Xcode generated a scheme using the target name. You will also need to make sure your scheme is marked as shared if running this on another device.

Once your framework is built you will need to include it and the frameworks it depends on in apps that will be using it. For your framework, that means including it in General > Embedded Binaries and General > Linked Frameworks and Libraries. For frameworks you depend on, (e.g. AlamoFire), you could instruct users to include it in their Podfile, you could package it and ship it along with your framework, or you could do both and let the user do what works for them.