关于linux下动态库调用问题

li.c++

我在动态库里用ACE定义类如下：
class CHandler : public ACE_Task<ACE_MT_SYNCH>;
{
public:
        CHandler(LPAFTERSEND lpaftersend, LPAFTERRECEIVED lpafterrecv, LPERRORHANDLE lperr, void* lpparam)
        { ...}
      
        virtual int handle_error(...) = 0;
          ...
};
class CChild : public CHandler
{
public:
       CChild(LPAFTERSEND lpaftersend, LPAFTERRECEIVED lpafterrecv, LPERRORHANDLE lperr, void* lpparam) : CHandler(lpaftersend, lpafterrecv, lperr, lpparam)
      {...}
    ...
};

接口函数:
extern "C" unsigned long create(LPAFTERSEND lpaftersend, LPAFTERRECEIVED lpafterrecv, LPERRORHANDLE lperr, void *lpparam)
{
      CChild * pchild = new CChild(lpaftersend, lpafterrecv, lperr, lpparam);
      return (unsigned long) pchild;
}

我在外部调用时接口函数create，到CChild * pchild = new CChild(lpaftersend, lpafterrecv, lperr, lpparam);一步就出现下面错误：
./smtest: relocation error: ../smlib.so: undefined symbol:.....

li.c++

还要说明一下，代码里面的LPAFTERSEND 、LPAFTERRECEIVED 、LPERRORHANDLE 是外部定义的静态函数，定义如下:
static int after_send(...){...}
static int after_recv(...){...}
static int err_handle(...){...}


在动态库里面如下声明:
typedef int (*LPAFTERSEND)(...);
typedef int (*LPAFTERRECEIVED)(...);
typedef int (*LPERRORHANDLE)(...);

li.c++

在Makefile.am里不能把大写的CPP源文件，automake到Makefile