iOS 14, lipo error while creating library for both device and simulator

Question

We have been using lipo command to create a framework which works on both device and simulator when integrated in other project. following are the build commands used to generate device and simulator builds

xcodebuild -target SampleSDK ONLY_ACTIVE_ARCH=NO -configuration ${CONFIGURATION} -sdk iphonesimulator BUILD_DIR="${BUILD_DIR}" BUILD_ROOT="${BUILD_ROOT}" OBJROOT="${OBJROOT}/DependentBuilds"
xcodebuild -target SampleSDK ONLY_ACTIVE_ARCH=NO -configuration ${CONFIGURATION} -sdk iphoneos BUILD_DIR="${BUILD_DIR}" BUILD_ROOT="${BUILD_ROOT}" OBJROOT="${OBJROOT}/DependentBuilds"

after this we are copying swift modules from iphonesimulator(if it exists) to the copied framework dir

cp -R "$BUILD_DIR/${CONFIGURATION}-iphonesimulator/${PRODUCT_NAME}/Modules/SampleSDK.swiftmodule/" "${UNIVERSAL_OUTPUTFOLDER}/${PRODUCT_NAME}/Modules/${PROJECT_NAME}.swiftmodule/"

and then lipo command

lipo -create "$BUILD_DIR/${CONFIGURATION}-iphonesimulator/${PRODUCT_NAME}/${PROJECT_NAME}" "${BUILD_DIR}/${CONFIGURATION}-iphoneos/${PRODUCT_NAME}/${PROJECT_NAME}" -output "${UNIVERSAL_OUTPUTFOLDER}/${PRODUCT_NAME}/${PROJECT_NAME}"

the above command is failing with following error

fatal error: lipo: /path/to/Library/Developer/Xcode/DerivedData/Sample-bhfmlauxsdympmdjkjyvujaljevg/Build/Products/Debug-iphonesimulator/SampleSDK.framework/SampleSDK and /Users/rramshettysiddaraju/Library/Developer/Xcode/DerivedData/Sample-bhfmlauxsdympmdjkjyvujaljevg/Build/Products/Debug-iphoneos/SampleSDK.framework/SampleSDK have the same architectures (arm64) and can't be in the same fat output file

I tried one of the answers in stackoverflow, about adding user-defined setting VALID_ARCHS and then removing it. but that didnt work

Answer 1

styv is right.

You can also set Excluded Architectures in the Xcode Build Settings