Warnings in app.dsym in Xcode after update

Question

Since I updated Xcode to the latest version I get a lot of warnings and I could not find clear explanation/solution, first it used to be just when I was testing on simulator but now I also get it when testing on device.

I tried this https://forums.developer.apple.com/thread/17921 but it did not helped me that much, I managed to get rid of the warning from the app extension but not the app itself. Anyone who encountered similar problem and managed to solve it?

Answer 1

For me, change the Debug Information Format to DWARF, like below, solve the problem:

Debug Information Format (DEBUG_INFORMATION_FORMAT) = DWARF

But, I wonder how it will affect the compiled app after setting this without dsym.

Any clues?!

Answer 2

This worked for me:

1. Targets -> [your project] -> Build Settings
2. Find and expand "Debug Information Format"
3. Change "Debug" value to "DWARF"
4. I left "Release" value unchanged as "DWARF with dSYM File"

I read that Debug builds don't need dSYM files.

Answer 3

This is probably due to changes in the build process across different Xcode versions, I am having this problem again with version 8.3.3 (8E3004b), so if this is happening just after an update you can fix it shutting down Xcode and deleting folder

~/Library/Developer/Xcode/DerivedData

which gets created again after the first build. About the risks of deleting that folder you can check this question