需要使用swig将模板类的一部分导出到python,其中包含一些静态成员。
所有的编译都很好,并且使用名称正确地创建了模块_派皮特。所以;当我从python执行import pipeit
时,问题就出现了,因为它给出了以下错误:
ImportError: ./_pipeit.so: undefined symbol: _ZN8gestface13FactoriesPoolINS_9GeneratorEED1Ev
这个问题是由模板中静态成员的使用引起的吗?如果是,应该如何处理?在
swig的代码如下:
^{pr2}$Factory、Configuration和Generator类也包含在接口文件中,为了简短起见,我不在这里报告它们,也不会出于同样的原因报告所有其他需要的include和异常处理。在
这是工厂里的代码
namespace gestface{
template<typename BuildedT>
class FactoriesPool{
private:
FactoriesPool(){}
FactoriesPool(const FactoriesPool& b);
FactoriesPool& operator=(const FactoriesPool& b);
std::map< std::string, Factory<BuildedT>* > factory_map;
static FactoriesPool<BuildedT>* singleton_instance;
public:
typedef BuildedT builded_t;
~FactoriesPool();
void add_factory(const std::string& class_name, Factory<BuildedT>* factory){
Factory<BuildedT>* f = factory_map[class_name];
if(f) delete f;
factory_map[class_name] = factory;
}
static FactoriesPool<BuildedT>* get_instance(){
if(!singleton_instance) singleton_instance = new FactoriesPool<BuildedT>();
return singleton_instance;
}
static const ConfigurationTemplate& get_configuration_template(const std::string& class_name) throw(bad_class){
if(!singleton_instance) singleton_instance = new FactoriesPool<BuildedT>();
const Factory<BuildedT>* f = singleton_instance->factory_map[class_name];
if(!f){
std::stringstream ss;
ss << "No such class: " << class_name;
throw bad_class(ss.str());
}
const ConfigurableFactory<BuildedT>* cf = dynamic_cast< const ConfigurableFactory<BuildedT>* >(f);
if(!cf){
std::stringstream ss;
ss << "Not configurable: " << class_name;
throw bad_class(ss.str());
}
return cf->get_configuration_template();
}
static BuildedT* build( const std::string& class_name,
const Configuration& conf = Configuration() ) throw(bad_parameter, bad_class){
if(!singleton_instance) singleton_instance = new FactoriesPool<BuildedT>();
const Factory<BuildedT>* f = singleton_instance->factory_map[class_name];
if(!f){
std::stringstream ss;
ss << "No such class: " << class_name;
throw bad_class(ss.str());
}
BuildedT* g;
if(conf.get_template().parameters_num() != 0){
const ConfigurableFactory<BuildedT>* cf = dynamic_cast< const ConfigurableFactory<BuildedT>* >(f);
if(!cf){
std::stringstream ss;
ss << "Not configurable: " << class_name;
throw bad_class(ss.str());
}
g = cf->build(conf);
}else {
g = f->build();
}
return g;
}
};
template<typename BuildedT>
FactoriesPool<BuildedT>* FactoriesPool<BuildedT>::singleton_instance = 0;
}
有人能帮我吗?在
谢谢你 卢卡
编辑: 以下是建筑说明:
swig -Wall -c++ -python -o pipeit_wrap.cpp -outdir dist/Debug pipeit.i
g++ -c -g -ansi -I../../include -I/usr/include/python2.6 -fPIC -MMD -MP -MF build/Debug/pipeit_wrap.o.d pipeit_wrap.cpp -o build/Debug/pipeit_wrap.o
g++ -g -ansi -o dist/Debug/_pipeit.so build/Debug/pipeit_wrap.o -L../../dist/Debug/GNU-Linux-x86 -shared -lboost_system -lpipeit
哦,我没说模板化factorespool类(和其他类一样)包含在我的共享库libpipeit中。在
不管怎样,我认为构建命令不是问题,因为我的接口文件包含许多其他类,其中一些类也是模板化的,在我试图导出最后一个模板化的类之前,它们都运行得很好。在
析构函数~factorespool()在哪里定义?运行时链接器正在查找它。在
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