What does IsCxx option do when using iOS .a static libraries/NativeReferences ?

Question

Im using an iOS .a library and Im not sure what kind of code it contains, C++ or ?

So I tried the playing with the setting 'IsCxx' but nothing happens.

• everything keeps on working
• package size stays the same

<ItemGroup>        
   <NativeReference Include="..\libraries\libxxxx.a">            
      <Kind>Static</Kind>
      <Frameworks>Accelerate</Frameworks>              
      <!-- Specifies whether or not the native library is a C++ library. -->
      <IsCxx>False</IsCxx>
      <SmartLink>False</SmartLink>
      <WeakFrameworks></WeakFrameworks>
      <ForceLoad>True</ForceLoad>
      <NeedsGccExceptionHandling>False</NeedsGccExceptionHandling>
   ...

So does IsCxx do anything in the context above, does it have performance gains or .... what does it do?

Answer 1

IOS native libraries are typically written in objective-c or swift with an objective-c wrapper. If the library is c++, it may require an additional initialization. The IsCxx adds this code.