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Script to put in an Aggregate Target of a Framework in Xcode 6 to create a Universal Framework
# make sure the output directory exists
# 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="${BUILD_ROOT}" clean build
# Step 2. Copy the framework structure (from iphoneos build) to the universal folder
# Step 3. Copy Swift modules (from iphonesimulator build) to the copied framework directory
cp -R "${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/${PROJECT_NAME}"
# Step 5. Convenience step to copy the framework to the project's directory
# Step 6. Convenience step to open the project's directory in Finder
open "${PROJECT_DIR}"
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hons82 commented Mar 25, 2015

if I aggregate my framework with this script I can run it on a device, but not in the simulator.
Am I doing something wrong?

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TobiasSeitz commented Apr 5, 2015


thanks a lot for the script.
I have the same problem as hons82.

Undefined symbols for architecture x86_64:
  "_OBJC_CLASS_$_SomeClass", referenced from:
      objc-class-ref in AppDelegate.o
      objc-class-ref in FirstViewController.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

lipo succeeds without errors.
I'm not using Swift, which is why I removed Step 3.
I use CocoaPods AFNetworking and FMDB in my Framework, so maybe that's the problem.

If I make any progress on this, I'll let you know. Please do the same ;)

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Tokuriku commented May 15, 2015

Hi guys,

There have been updates to Xcode and I haven't had time to retest this but..

Step 3 moves the simulator modules to the main framework folder before the lipo. You really don't want to skip this step. That said you will want to use something else than swiftmodule in

I don't code in Objective-C so I don't know the right file format to append there but you should find it easily by going to that folder manually and looking at what the extension is for the modules..

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ghost commented Jun 27, 2019

Hi I have used the same script but still not able to run on simulator. Can any one please help

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juandavidcardona commented May 10, 2020


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jaykumarvcx commented Jul 10, 2020


I am facing same issue, I have created my framework in objective-c and using same scrip above, but after creating my framework and add to my project unable to run on simulatore this error i am getting

Undefined symbols for architecture x86_64:
"OBJC_CLASS$_SomeClass", referenced from:
objc-class-ref in VCXAppDelegate.o
"OBJC_CLASS$_SomeClass", referenced from:
objc-class-ref in VCXConfrenceViewController.o
ld: symbol(s) not found for architecture x86_64

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