有没有办法抑制c ++名称mangling？ [英] Is there a way to suppress c++ name mangling?

问题描述

我有一个用C ++编写的DLL，我想禁止几个导出方法的名称。这些方法是全局的，不是任何类的成员。有没有办法实现这个？

I have a DLL that is written in C++ and I want to suppress the name mangling for a few exported methods. The methods are global and are not members of any class. Is there a way to achieve this?

BTW：我使用VS2008。

BTW: I'm using VS2008.

推荐答案

bradtgmurray是正确的，但对于Visual C ++编译器，您需要显式导出函数。但是使用Serge-appTranslator提出的.DEF文件是错误的方法。

"bradtgmurray" is right, but for Visual C++ compilers, you need to explicitly export your function anyway. But using a .DEF file as proposed by "Serge - appTranslator" is the wrong way to do it.

使用declspec（dllexport / dllimport）指令，该指令适用于C和C ++代码，无论是否装饰（而.DEF仅限于C，除非您想用手工装饰你的代码）。

Using the declspec(dllexport/dllimport) instruction, which works for both C and C++ code, decorated or not (whereas, the .DEF is limited to C unless you want to decorate your code by hand).

因此，在Visual C ++中导出未加工函数的正确方法是结合导出C成语，如bradtgmurray和dllimport / dllexport关键字。

So, the right way to export undecorated functions in Visual C++ is combining the export "C" idiom, as answered by "bradtgmurray", and the dllimport/dllexport keyword.

例如，我在Visual C ++上创建了一个空DLL项目，并写了两个函数，一个被称为CPP，因为它被装饰，而另一个C，因为它不是。代码是：

As an example, I created on Visual C++ an empty DLL project, and wrote two functions, one dubbed CPP because it was decorated, and the other C because it wasn't. The code is:

// Exported header
#ifdef MY_DLL_EXPORTS
#define MY_DLL_API __declspec(dllexport)
#else
#define MY_DLL_API __declspec(dllimport)
#endif

// Decorated function export : ?myCppFunction@@YAHF@Z
MY_DLL_API int myCppFunction(short v) ;

// Undecorated function export : myCFunction
extern "C"
{
MY_DLL_API int myCFunction(short v) ;
} ;

我想你已经知道，但为了完整起见，MY_DLL_API宏定义在DLL makefile（即VCPROJ），但不是DLL用户。

I guess you already know, but for completeness' sake, the MY_DLL_API macro is to be defined in the DLL makefile (i.e. the VCPROJ), but not by DLL users.

C ++代码很容易写，但为了完整起见，

The C++ code is easy to write, but for completeness' sake, I'll write it below:

// Decorated function code
MY_DLL_API int myCppFunction(short v)
{
   return 42 * v ;
}

extern "C"
{

// Undecorated function code
MY_DLL_API int myCFunction(short v)
{
   return 42 * v ;
}

} ;

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