我正在尝试使用SWIG创建一个*.so文件,以便在Python中进一步使用,但是某些东西出了问题。
我有两个文件:DataGatherer.h
#include <iostream>
#include <stdlib.h>
#include <time.h>
#include "gnublin.h"
#include <pthread.h>
class dataGatherer
{
private:
int threshold;
int timeThreshold;
int data[4096];
bool running;
gnublin_spi* spiDevice;
pthread_t spiThread;
void *params;
public:
dataGatherer(void);
dataGatherer(int, int);
void initData();
int getThreshold(void);
int* getData(void);
int getPeak(void);
void initSPI(void);
void gatherData();
void * run(void * arg);
void stop(void);
// for use of thread we have to implement some methods from C
static void * start_static(void * params)
{
dataGatherer * thread_this = static_cast<dataGatherer*>(params);
return thread_this->run(thread_this->params);
}
void start(void * params)
{
this->params = params;
pthread_create(&spiThread, 0, &dataGatherer::start_static, this);
}
};
and spiController.h
#include "dataGatherer.h"
class spiController
{
private:
bool runGather;
dataGatherer* gatherer;
int data[4096];
public:
spiController(void);
spiController(int, int);
void initData();
bool checkStop();
void stop();
void start();
};
我的spiController.i接口文件如下所示:
/* spiController.i */
%module spiController
%{
#include "dataGatherer.h"
#include "spiController.h"
#include "gnublin.h"
#include <stdlib.h>
#include <time.h>
#include <pthread.h>
extern void initData();
extern bool checkStop();
extern void stop();
extern void start();
%}
extern void initData();
extern bool checkStop();
extern void stop();
extern void start();
最后,我尝试使用终端中的命令创建*.so文件,就像SWIG页面上的示例一样:
swig -python -c++ spiController.i
c++ -c spiController_wrap.c -I/usr/include/python2.7
c++ -shared spiController_wrap.o -o _spiController.so
*.cxx、*.o和*.so文件已经创建,没有错误,但是当我将spiController导入到Python代码中时,出现了以下问题:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "spiController.py", line 26, in <module>
_spiController = swig_import_helper()
File "spiController.py", line 22, in swig_import_helper
_mod = imp.load_module('_spiController', fp, pathname, description)
ImportError: ./_spiController.so: undefined symbol: _Z9checkStopv
这是我第一次尝试使用SWIG,但我已经卡在这个点上了。我该如何解决这个问题?