Building native dll

Hi! I am very new to Mac, and spent almost full day trying to sort this out. I want to build c++ dll to call both from window and mac using XCode. So I've made XCode C++ dynamic library app, with setting like this:



and I have very simple function in header

Code (csharp):

1. extern "C" int __stdcall GetInfo();

and cpp immplementation

Code (csharp):

1.  
2. extern "C"
3. {
4.   int GetInfo()
5.   {
6.       return 152;
7.   }
8. }

[

This compiles on mac just fine as dylib.

Then, inside Unity, I add it as:

Code (csharp):

1.  
2.     [DllImport("libLibea", EntryPoint = "GetInfo")]
3.     public static extern int GetInfo();
4.  

and end up getting error:

Code (csharp):

1.  
2. Can't find PE header for Assets/Plugins/x64/libLibea.dll
3. Failed to load 'Assets/Plugins/x64/libLibea.dll', expected 64 bit architecture (IMAGE_FILE_MACHINE_AMD64), but was IMAGE_FILE_MACHINE_UNKNOWN. You must recompile your plugin for 64 bit architecture.
4.  

What else am I missing? My architecture is universal. Maybe the problem, is that I rename dylibto dll, without doing something else important?

 

First of all, for Mac, you need to build a BUNDLE library to be used by Unity.
Secondly, I advise you to work with CMake and SWIG to build cross-platform (Windows & Mac) and to have a free wrapper.