linux共享库带有类（version script） 抛砖引玉

linux共享库含有类（version script） 抛砖引玉！
这是我的代码 在最后编译有问题

C/C++ code

#include"stdio.h"void foo_v1(int f) {     printf("foo_v1\n");}__asm__(".symver foo_v1,foo@@VERSION_1.1");class Clock{    public:void SetTime(int NewH, int NewM, int NewS);};void  Clock::SetTime(int H, int M, int S){      int  Hour = H;      int  Minute = M;      int  Second = S;      printf("%d %d %d", Hour, Minute, Second);}__asm__(".symver SetTime ,SetTime@@VERSION_1.1");

C# code

//这是上边说的1.verVERSION_1.1{      global:      foo;      Clock::*;};

C/C++ code

gcc -shared -fPIC -o libfoo.so.1.1 -Wl,--soname='libfoo.so.1' -Wl,--version-script=1.ver foo.c

C/C++ code

#include <stdio.h>class Clock;void foo(int);int main(){    Clock myClock;    foo(100);    myclock.SetTime(10, 12, 14);    return 0;}

C/C++ code

main.cpp: In function `int main()':main.cpp:6: error: aggregate `Clock myClock' has incomplete type and cannot be defined