Whether the function forward x86 dll can only explicit link

Question

There are two dll, the BaseDll.dll and MyDll.dll
In BaseDll.dll, there is a export funcion.
extern "C" __declspec(dllexport) int MyAdd(int a, int b)
{
return a + b + 1;
}
And in MyDll.dll, i use function forward

pragma comment(linker, "/EXPORT:czhAdd=BaseDll.MyAdd")

In the test exe.
I declare the function
extern "C" __declspec(dllimport) int czhAdd(int a, int b);
And use it.

When complie in x86, it occure error.
Unresolved external symbol __imp__czhAdd.
But complie succeed in x64.

Answer 1

This worked for me in both 32-bit and 64-bit builds-

BaseDll.dll -

extern "C" __declspec(dllexport) int MyAdd(int a, int b)  
{  
    return a + b;  
}  

MyDll.dll -

#ifdef _WIN64  
#pragma comment(linker, "/EXPORT:czhAdd=BaseDll.MyAdd")  
#else  
#pragma comment(linker, "/EXPORT:_czhAdd=BaseDll.MyAdd")  
#endif  
  

Calling .exe -

extern "C" __declspec(dllimport) int czhAdd(int a, int b);  
  
int main()  
{  
	int x = czhAdd(40, 2);  
	return x;  
}