How do I fix linker error undefined symbols for Architecture arm64?

You can fix the linker error by going to project -> target (your project name) -> build settings and change architectures to standard architectures (armv7, armv7s), and valid architectures to armv7, armv7s. Note though, this means you won’t get the full power of the 64 bit processor.

What does undefined symbol mean in Xcode?

Show activity on this post. Undefined symbols for architecture x86_64: “_OBJC_CLASS_$_xxx”, referenced from: objc-class-ref in yyy.o. This generally means, you are calling “xxx” (it may be a framework or class) from the class “yyy”. The compiler can not locate the “xxx” so this error occurs.

Is iOS an ARM64?

iOS and iPadOS arm64 is the current 64-bit ARM CPU architecture, as used since the iPhone 5S and later (6, 6S, SE and 7), the iPad Air, Air 2 and Pro, with the A7 and later chips.

What is ARM64 iPhone?

ARM64 simply refers to the RISC architecture running on your iphone’s processor. Apple licenses chip architecture form the company “ARM” for use in their iOS device processors. ARM architecure supports both 32 bit and 64 bit processing – ARM64 specifically refers to the 64 bit instruction set.

What is an undefined line?

What Is an Undefined Slope? The slope of a line is undefined if the line is vertical. If you think of slope as rise over run, then the line rises an infinite amount, or goes straight up, but does not run at all.

What is bridging header in iOS?

Its correct to say, Bridging header allows user to use Objective-C classes/files in their swift code in same project. A Swift bridging header allows you to communicate with your old Objective-C classes from your Swift classes.

What is umbrella header?

The umbrella header is the ‘master’ header file for a framework. Its use is that you can write #import

Which iOS devices are ARM64?

arm64 is the current 64-bit ARM CPU architecture, as used since the iPhone 5S and later (6, 6S, SE and 7), the iPad Air, Air 2 and Pro, with the A7 and later chips.