Xcode 12 - fatal error lipo

[frovera]

First of all thanks for your tutorial. I have developed a library that must work both on simulators and on physical devices hence the need to create a fat framework.

I followed your istructions and build your script, unfortunately I get a fatal error at STEP 3 (... have the same architectures (arm64) and can't be in the same fat output file).

Details :

⏱Starting the Universal Framework work... 

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 🚀 Step 1-1: Building for iphonesimulator

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2020-09-22 14:20:49.926 xcodebuild[19152:440414]  DTDeviceKit: deviceType from aa02380574025d12b6a86713c0a5c871122e93a8 was NULL
2020-09-22 14:20:50.088 xcodebuild[19152:440404]  DTDeviceKit: deviceType from aa02380574025d12b6a86713c0a5c871122e93a8 was NULL
2020-09-22 14:20:50.088 xcodebuild[19152:440404]  DTDeviceKit: deviceType from aa02380574025d12b6a86713c0a5c871122e93a8 was NULL

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 🚀 Step 1-2: Building for iphoneos 

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 📦 Step 2: Copy the framework structure for iphoneos

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 🛠 Step 3: The LIPO Step

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fatal error: lipo: /Users/francesco/Library/Developer/Xcode/DerivedData/XXX-ejajnmazbewoplbnwyfgpckisukh/Build/Products/Release-iphonesimulator/XXX.framework/XXX and /Users/francesco/Library/Developer/Xcode/DerivedData/XXX-ejajnmazbewoplbnwyfgpckisukh/Build/Products/Release-iphoneos/XXX.framework/XXX have the same architectures (arm64) and can't be in the same fat output file

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 📦 Step 4: Copy the Swiftmodules

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cp: /Users/francesco/Library/Developer/Xcode/DerivedData/XXX-ejajnmazbewoplbnwyfgpckisukh/Build/Products/Release-iphonesimulator/XXX.framework/Modules/XXX.swiftmodule/Project is a directory (not copied).

cp: /Users/francesco/Library/Developer/Xcode/DerivedData/XXX-ejajnmazbewoplbnwyfgpckisukh/Build/Products/Release-iphoneos/XXX.framework/Modules/XXX.swiftmodule/Project is a directory (not copied).

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 🚛 Step 5 Copying in the project directory

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 🏁 Completed with Success! 🙂

 🔍 For more details you can always check the /tmp/XXX_archive.log file. 📝 

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I replaced my library name with XXX.

Could you help me to solve it please? Thank you

[gurhub]

Hi, you're welcome, I'm glad you used the script :)

I have checked your output, you get a Lipo error just like you said. You can check the Demo application for the Build Settings. Probably you have different settings somewhere. I was also getting Lipo errors too. For me, the solution was making a similar Build Setting with the working project.

I'm closing because this is not related to the Script file itself.

Best.

[bot509]

@gurhub I got the same error with Xcode 12, I guess Xcode 12 will build arm64 default for simulator, to support Mac silicone. How do I change the build setting to avoid this fatal error of lipo?

I found this article to remove arm64 for simulator: https://stackoverflow.com/questions/63607158/xcode-12-building-for-ios-simulator-but-linking-in-object-file-built-for-ios

but I think we should resolve this problem on lipo stage. we'd better ignore the same arch when lipo merge.