Enabling in ARC in xamarin

Question

Most of the security and penetration tools report if the ARC is not enabled.

fobjc-arc flag is not Found 

As far as I know we can't do this in xamarin because we don't have build settings here.

This flag can be set in build settings only.

Even if we could , it won't work because xamarin uses C# and MRC to manage memory by itself.

Can anybody explain me how it can be done or not done or my understanding is wrong

Edit:

We can turn on ARC to a full project by build settings

CLANG_ENABLE_OBJC_ARC=YES

But there is no way to do this in xam studio ... setting the value in mtouch also throws error

Answer 1

Add the following to the Additional mtouch arguments text field within the Xamarin.iOS project properties window:

-gcc_flags "-fobjc-arc"