Xcode target compiled with optimization

Question

I am seeing following warning message, when I build target ABC.

ABC was compiled with optimization - stepping may behave oddly; variables may not be available.

I have made sure about optimization (GCC_OPTIMIZATION_LEVEL = 0), but still build is showing above message.

How to resolve this issue?

score 1 · Answer 1 · answered Jan 02 '17 at 06:31

1

In Xcode go to Product > Scheme > Edit Scheme...

and change the Build Configuration from "Release" to "Debug" (within the "Run" menu under "Info").

answered Jan 02 '17 at 06:31

Schomes

Thanks for help, but it didn't work. I am still seeing same warning message. – Tanmay Jan 03 '17 at 03:45

score 1 · Answer 2 · answered Oct 30 '17 at 05:21

1

Xcode generally throws this type of error when compiler optimisation level is set other than None in debug mode. To do it follow below steps.

Step 1: Go to your build settings

Step 2: Search for SWIFT_OPTIMIZATION_LEVEL

Step 3: Go to Optimization level in debug mode.

Step 4: Change it into None[-Onone].

answered Oct 30 '17 at 05:21

1

This did not work for me, as None was already selected when the crash happened. – Bogdan Razvan Sep 14 '21 at 09:30

score 0 · Answer 3 · answered Dec 21 '22 at 07:42

0

Try turning off the 'Debug Executable' in scheme settings. But I do not know if this is recommended.

answered Dec 21 '22 at 07:42

3 Answers3