使用swig

Question

Unmanaged C# calls to a static library

可能与https://stackoverflow.com/users/456434/mazyod相关

我正在尝试使用HoloToolkit.Sharing库（https://github.com/Microsoft/MixedRealityToolkit/tree/master/Sharing）构建iOS应用程序，而该库又基于包括RakNet在内的多个开源组件。

将库及其依赖项构建为arm64的静态库，并手动将DLL引用更改为__Internal之后，我可以在iOS中加载该插件，但应用程序会抛出异常：

EntryPointNotFoundException: SWIGRegisterExceptionCallbacks_SharingClient
HoloToolkit.Sharing.SharingClientPINVOKE+SWIGExceptionHelper..cctor () (at Assets/HoloToolkit/Sharing/Scripts/SDK/SharingClientPINVOKE.cs:150)

包装器看起来像这样：

        [global::System.Runtime.InteropServices.DllImport ("__Internal", EntryPoint = "SWIGRegisterExceptionCallbacks_SharingClient")]
        public static extern void SWIGRegisterExceptionCallbacks_SharingClient (
            ExceptionDelegate applicationDelegate,
            ExceptionDelegate arithmeticDelegate,
            ExceptionDelegate divideByZeroDelegate, 
            ExceptionDelegate indexOutOfRangeDelegate, 
            ExceptionDelegate invalidCastDelegate,
            ExceptionDelegate invalidOperationDelegate,
            ExceptionDelegate ioDelegate,
            ExceptionDelegate nullReferenceDelegate,
            ExceptionDelegate outOfMemoryDelegate, 
            ExceptionDelegate overflowDelegate, 
            ExceptionDelegate systemExceptionDelegate);

据我所知，swig中必要的包装器也包含在C ++项目中（可在ClientWrapperAPI_CSharp.cpp中找到）：

#ifdef __cplusplus
extern "C" 
#endif
SWIGEXPORT void SWIGSTDCALL SWIGRegisterExceptionCallbacks_SharingClient(
                                            SWIG_CSharpExceptionCallback_t applicationCallback,
                                            SWIG_CSharpExceptionCallback_t arithmeticCallback,
                                            SWIG_CSharpExceptionCallback_t divideByZeroCallback, 
                                            SWIG_CSharpExceptionCallback_t indexOutOfRangeCallback, 
                                            SWIG_CSharpExceptionCallback_t invalidCastCallback,
                                            SWIG_CSharpExceptionCallback_t invalidOperationCallback,
                                            SWIG_CSharpExceptionCallback_t ioCallback,
                                            SWIG_CSharpExceptionCallback_t nullReferenceCallback,
                                            SWIG_CSharpExceptionCallback_t outOfMemoryCallback, 
                                            SWIG_CSharpExceptionCallback_t overflowCallback, 
                                            SWIG_CSharpExceptionCallback_t systemCallback) {
SWIG_csharp_exceptions[SWIG_CSharpApplicationException].callback = applicationCallback;
SWIG_csharp_exceptions[SWIG_CSharpArithmeticException].callback = arithmeticCallback;
SWIG_csharp_exceptions[SWIG_CSharpDivideByZeroException].callback = divideByZeroCallback;
SWIG_csharp_exceptions[SWIG_CSharpIndexOutOfRangeException].callback = indexOutOfRangeCallback;
SWIG_csharp_exceptions[SWIG_CSharpInvalidCastException].callback = invalidCastCallback;
SWIG_csharp_exceptions[SWIG_CSharpInvalidOperationException].callback = invalidOperationCallback;
SWIG_csharp_exceptions[SWIG_CSharpIOException].callback = ioCallback;
SWIG_csharp_exceptions[SWIG_CSharpNullReferenceException].callback = nullReferenceCallback;
SWIG_csharp_exceptions[SWIG_CSharpOutOfMemoryException].callback = outOfMemoryCallback;
SWIG_csharp_exceptions[SWIG_CSharpOverflowException].callback = overflowCallback;
SWIG_csharp_exceptions[SWIG_CSharpSystemException].callback = systemCallback;
}

使用IL2CPP和.NET 2.0 Subset构建，在Mac OS X 10.12，Xcode 9.0 beta 2，iOS 11 beta上使用64位Unity 5.5.2f1中的-unsafe标志。

我需要更改其他内容以使__Internal引用起作用吗？或者，包装器找到回调是否需要其它东西（我发现这个非常老的线程提到需要构建一个＆＃34; helper dll＆＃34;：http://swig.10945.n7.nabble.com/C-wrapper-tries-to-find-SWIGRegisterExceptionCallbacks-MyDLL-td6935.html）？