I assume this happens in any Xcode project and not just your own? Open Console.app and check various logs to see if anything Xcode-related is being dumped. Sample Xcode (using Activity Monitor or the

If you’re allowed to share any of the stuff that crashes with me, I’ve got a few versions of the OS and Xcode 11 installed on a few of my Macs and can see if I can open them. Feel free to email me

No Swift in my projects, Objective-C only

It’s been reported on Reddit that this is a problem in projects that have mixed Objective-C and Swift code in Xcode 11.

Only Xcode 11 is affected. Everything else including Xcode 10 works normally. I don't have any Xcode extensions. I also tried: -Creating a new clean user and run Xcode 11 there -Restarting in safe

When it is in this state, are other apps affected or is the issue only with Xcode? Something in the main thread getting wedged from the sound of it. Misbehaving Xcode extension? Sak

Reinstalling didn't help... It's like the app works normally - until I open a .xib file. Then everything gradually goes to hell. Even during few initial successful operations in IB it's clear that

Thanks Sak, Neither Siri no derived data helped so far. Other apps seem to work normally - including Xcode 10. I'll update if find any solution. Leo

I’d be inclined to remove the install of xcode and re install. Peter

Thanks Peter, Deleted derived data didn't help... Plus I discovered yet more issues in IB. Xcode 11 cannot be used at all. I'll keep looking for solution... Leo

Just Xcode? I had similar issues after "upgrading" to Catalina - everything was laggy. What I later found out was that I had SIRI disabled (in Mojave before the u/g), and Catalina seems to need SIRI

Hi Leo I had the same problem regarding code completion - the solution was to ditch the derived data for the project and to clean the build. ( someone on this list suggested I try this ) Regarding

Is it just my luck - or is Xcode 11 unusable? I just finally updated to Catalina and installed Xcode 11 (all latest versions of course). Xcode 11 is totally non-responsive. In Interface Builder, when

I enabled "Hardened Runtime" on the library, but it didn't fix the problem. It does no I/O, only computation on some input values, and returns a double. Straight C code. Since Xcode knows it's

It will need hardened runtime at the least. It also may need an exception that allows other apps to use the library. I don’t know if it needs Notarization - since it is a dylib and not a framework I

Does the library need certain entitlements? I have it set to "Apple Development" as the Code Signing Identity. Signing is set to automatic. -Carl

Look at the General Info or Code Signing section of the target.

I've created a dynamic C library, libgauss.dylib, and copied it into /usr/local/lib. My MacOS 10.14 app builds fine against it, but won't run, complaining that the library doesn't have a "Team ID"

Thank you to all who responded. It's great to have such a useful group of people available! Putting the binary into a Run Script phase works nicely. Since I already had a post-build Run Script phase

Thanks for the suggestions. I'll try a script phase when I get back to it tomorrow, and report back. John Leo wrote on 19/4/20 05:01: -- John Brownie Mussau-Emira language, New Ireland Province,