Re: [Mingw-users] [mingw - C/C++] Cannot export symbols

[Danny S. <dan...@cl...>]

=46rom: "ernesto basc=F3n pantoja"

> Hi everybody:
>
>
> I am writing this very small test class using mingw:
>
>
> #ifdef DLL
> #define DLLEXPORT __declspec(dllexport)
> #else
> #define DLLEXPORT __declspec(dllimport)
> #endif
>
>
> #include <stdio.h>
>
>
> class DLLEXPORT MyTestClass
> {
>         public:
>                 MyTestClass()           { }
>                 ~MyTestClass()          { }
>                 int GetSuccessor(int a)    { return a + 1; }
>                 int GetPredecessor(int a)  { return a - 1; }
>
>
>
> };
>
>
>
> As you can see, I want to export that class into a DLL.
> So, I do:
>
> g++ -shared -o test.dll test.cpp -Wl,-output-def=3Dtest.def -DDLL
>
>
> and my DLL is an empty DLL with no exported symbols!!! (and the .de=
f
> file has length 0).
>


The functions are all inline.  Either move the definitions out of the=
 class
definition or add -fkeep-inline-functions to command line.

Danny

>
> Am I doing something wrong? I am creating a C++ library, and I want=
 to
> export only classes into my DLL.
>
>
> Thanks in advance
>
>
> Ernesto
>
>
>
>
>
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