Template et probleme au linkage (seulement windows)
Bonjour,
J'ai un probleme avec l'utilisation de templates quand je suis au moment du linkage.
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Dans une librairie A je creer une templates:
include/libA/paramsnodevec.h
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template <typename _Tp>
class X7S_CX_DLL ParamsNodeVec: public ParamsNode
{
public:
ParamsNodeVec(ParamsNode *parent, const std::string& name, int ID=X7S_ANY_ID)
:ParamsNode(parent,name, X7S_ANY_TYPE, ID) {};
virtual ~ParamsNodeVec() { deleteAll(); };
bool append(_Tp* obj)
{
bool isok=true;
if(obj)
{
//Check that it has the same parent
if(((ParamsNode*)obj)->getParent() != this)
{
//Otherwise add it to the XmlList
isok=this->addAsChild(obj);
}
else
{
//Otherwise check for duplicate (in the list)
for(int i=0;i<length();i++)
{
if(obj==m_vec[i]) isok=false;
}
}
if(isok) m_vec.push_back(obj);
}
return isok;
}
const _Tp* at(int index) const
{
if(0 <= index && index < length())
return m_vec.at(index);
else
{
return NULL;
}
}
_Tp* at(int index)
{
if(0 <= index && index < length())
return m_vec.at(index);
else
{
return NULL;
}
}
const std::vector<_Tp*> vec() { return m_vec; }
_Tp* remove(int index)
{
_Tp* ret=NULL;
if(0<= index && index < length())
{
ret=m_vec[index];
m_vec.erase(m_vec.begin()+index);
}
return ret;
}
bool erase(int index)
{
_Tp* tmp = this->remove(index);
if(tmp)
{
delete tmp;
return true;
}
return false;
}
size_t size() const { return m_vec.size(); }
int length() const { return (int)m_vec.size(); }
/**
* @brief Generic method to create a child giving all the information
*
* This method is one called by the XML library
*/
bool createChild(const std::string& name, int type, int id, int pos)
{
bool ret=false;
if(name.compare(_Tp::nodeName())==0)
{
//Delete all other child if we are the first one.
if(pos==ParamsNode::First) this->deleteAll();
//Call the new function to create children
_Tp *tmp = this->newChild(type);
if(tmp)
{
ret = this->append(tmp);
if(ret && id != X7S_ANY_ID)
{
ret = this->setChildID(tmp,id);
if(ret==false)
{
_X7S_DEBUG_CL_M("createChild()",ECAT_CORE,ELVL_INF,Err_Duplicate,"Can not append %s to %s because ID %d already exist",
tmp->name().c_str(),this->name().c_str(),id);
this->erase(size()-1);
}
}
}
}
return ret;
}
protected:
void deleteAll()
{
//Copy all the value in a temporary vector
std::vector<_Tp*> tmpVec=m_vec;
//Clear the vector (not usable in other thread)
m_vec.clear();
//Delete the value one by one from the temporary vector.
for(size_t i=0;i<tmpVec.size();i++)
{
X7S_DELETE_PTR(tmpVec[i]);
}
}
/**
* @brief Virtual method to create a child
*
* This method must be overloaded in the class that will implement it.
* The child created can be with a NULL parent, because we will add it.
*
* @param type
*/
virtual _Tp* newChild(int type)=0;
protected:
std::vector<_Tp* > m_vec;
}; |
Dans une librarie B (qui depend de A) je creer les fichiers suivants:
libB/shapes.h
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#include <core/paramsnodevec.h>
class Shape; //!< Prototype
class X7S_CVPP_DLL Shapes: public ParamsNodeVec<Shape>
{
public:
Shapes(ParamsNode *parent, const cv::Size& reso);
virtual ~Shapes();
void draw(cv::Mat& im) const;
const cv::Size& resolution() const { return m_reso; }
protected:
Shape* newChild(int type);
void initParams() {};
protected:
cv::Size m_reso;
}; |
libB/shapes.cpp
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Shapes::Shapes(ParamsNode *parent, const cv::Size& reso)
:ParamsNodeVec<Shape>(parent,"shapes"), m_reso(reso)
{
}
Shapes::~Shapes()
{
}
void Shapes::draw(cv::Mat& img) const
{
Shape *shape;
for(size_t i=0;i<m_vec.size();i++)
{
shape=m_vec[i];
if(shape) shape->draw(img);
}
}
Shape* Shapes::newChild(int type)
{
Shape *s= Shape::create(type);
if(s) s->setResolution(m_reso);
return s;
} |
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Avec MinGW j'ai les erreurs suivantes:
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Linking CXX shared library ..\..\..\bin\libx7scvpp.dll
cd C:\Users\Ben\project\builds\CvS400\ecVGA\x7s\modules\cvpp && "C:\Program Files\CMake 2.8\bin\cmake.exe" -E cmake_link_script CMakeFiles\x7scvpp.dir\link.txt --verbose=1
C:\MinGW\bin\g++.exe -shared -o ..\..\..\bin\libx7scvpp.dll -Wl,--out-implib,..\..\..\lib\libx7scvpp.dll.a -Wl,--major-image-version,1,--minor-image-version,1 -Wl,@CMakeFiles\x7scvpp.dir\objects1.rsp ..\..\..\lib\libx7score.dll.a ..\..\..\lib\libx7scv.dll.a C:\Libs\OpenCV\installed\lib\libcxcore210d.dll.a C:\Libs\OpenCV\installed\lib\libcv210d.dll.a C:\Libs\OpenCV\installed\lib\libml210d.dll.a C:\Libs\OpenCV\installed\lib\libhighgui210d.dll.a C:\Libs\OpenCV\installed\lib\libcvaux210d.dll.a ..\..\..\3rdparty\lib\liblibjpeg.a -lkernel32 -luser32 -lgdi32 -lwinspool -lshell32 -lole32 -loleaut32 -luuid -lcomdlg32 -ladvapi32
CMakeFiles/x7scvpp.dir/src/shape.cpp.obj:shape.cpp:(.text$_ZN3x7s13ParamsNodeVecINS_5ShapeEEC2EPNS_10ParamsNodeERKSsi[x7s::ParamsNodeVec<x7s::Shape>::ParamsNodeVec(x7s::ParamsNode*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)]+0x67): undefined reference to `_imp___ZTVN3x7s13ParamsNodeVecINS_5ShapeEEE'
CMakeFiles/x7scvpp.dir/src/shape.cpp.obj:shape.cpp:(.text$_ZN3x7s13ParamsNodeVecINS_5ShapeEEC1EPNS_10ParamsNodeERKSsi[x7s::ParamsNodeVec<x7s::Shape>::ParamsNodeVec(x7s::ParamsNode*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)]+0x67): undefined reference to `_imp___ZTVN3x7s13ParamsNodeVecINS_5ShapeEEE'
CMakeFiles/x7scvpp.dir/src/shape.cpp.obj:shape.cpp:(.text$_ZN3x7s13ParamsNodeVecINS_5ShapeEED2Ev[x7s::ParamsNodeVec<x7s::Shape>::~ParamsNodeVec()]+0x36): undefined reference to `_imp___ZTVN3x7s13ParamsNodeVecINS_5ShapeEEE'
CMakeFiles/x7scvpp.dir/src/shape.cpp.obj:shape.cpp:(.text$_ZN3x7s13ParamsNodeVecINS_5ShapeEED1Ev[x7s::ParamsNodeVec<x7s::Shape>::~ParamsNodeVec()]+0x36): undefined reference to `_imp___ZTVN3x7s13ParamsNodeVecINS_5ShapeEEE'
CMakeFiles/x7scvpp.dir/src/shape.cpp.obj:shape.cpp:(.text$_ZN3x7s13ParamsNodeVecINS_5ShapeEED0Ev[x7s::ParamsNodeVec<x7s::Shape>::~ParamsNodeVec()]+0x36): undefined reference to `_imp___ZTVN3x7s13ParamsNodeVecINS_5ShapeEEE' |
Avec MVC2008 j'obtient comme message:
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1> Creating library C:\Users\Ben\project\builds\CvS400\vc9VGA-2\lib\Debug\x7scvpp.lib and object C:\Users\Ben\project\builds\CvS400\vc9VGA-2\lib\Debug\x7scvpp.exp
1>shape.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: virtual __thiscall x7s::ParamsNodeVec<class x7s::Shape>::~ParamsNodeVec<class x7s::Shape>(void)" (__imp_??1?$ParamsNodeVec@VShape@x7s@@@x7s@@UAE@XZ) referenced in function "public: virtual __thiscall x7s::Shapes::~Shapes(void)" (??1Shapes@x7s@@UAE@XZ)
1>shape.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall x7s::ParamsNodeVec<class x7s::Shape>::ParamsNodeVec<class x7s::Shape>(class x7s::ParamsNodeVec<class x7s::Shape> const &)" (__imp_??0?$ParamsNodeVec@VShape@x7s@@@x7s@@QAE@ABV01@@Z) referenced in function "public: __thiscall x7s::Shapes::Shapes(class x7s::Shapes const &)" (??0Shapes@x7s@@QAE@ABV01@@Z)
1>shape.obj : error LNK2001: unresolved external symbol "public: virtual bool __thiscall x7s::ParamsNodeVec<class x7s::Shape>::createChild(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,int,int,int)" (?createChild@?$ParamsNodeVec@VShape@x7s@@@x7s@@UAE_NABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@HHH@Z)
1>shape.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: class x7s::ParamsNodeVec<class x7s::Shape> & __thiscall x7s::ParamsNodeVec<class x7s::Shape>::operator=(class x7s::ParamsNodeVec<class x7s::Shape> const &)" (__imp_??4?$ParamsNodeVec@VShape@x7s@@@x7s@@QAEAAV01@ABV01@@Z) referenced in function "public: class x7s::Shapes & __thiscall x7s::Shapes::operator=(class x7s::Shapes const &)" (??4Shapes@x7s@@QAEAAV01@ABV01@@Z)
1>shape.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall x7s::ParamsNodeVec<class x7s::Shape>::ParamsNodeVec<class x7s::Shape>(class x7s::ParamsNode *,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,int)" (__imp_??0?$ParamsNodeVec@VShape@x7s@@@x7s@@QAE@PAVParamsNode@1@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@H@Z) referenced in function "public: __thiscall x7s::Shapes::Shapes(class x7s::ParamsNode *,class cv::Size_<int> const &)" (??0Shapes@x7s@@QAE@PAVParamsNode@1@ABV?$Size_@H@cv@@@Z)
1>shape.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: bool __thiscall x7s::ParamsNodeVec<class x7s::Shape>::append(class x7s::Shape *)" (__imp_?append@?$ParamsNodeVec@VShape@x7s@@@x7s@@QAE_NPAVShape@2@@Z) referenced in function "public: __thiscall x7s::Shape::Shape(int,class x7s::Shapes *)" (??0Shape@x7s@@QAE@HPAVShapes@1@@Z)
1>C:\Users\Ben\project\builds\CvS400\vc9VGA-2\bin\Debug\x7scvpp.dll : fatal error LNK1120: 6 unresolved externals
1>Build log was saved at "file://c:\Users\Ben\project\builds\CvS400\vc9VGA-2\x7s\modules\cvpp\x7scvpp.dir\Debug\BuildLog.htm" |
Sous linux tout compil correctement.
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J'ai regarder dans plusieurs FAQ et je ne comprend pas ou est l'erreur car j'ai la declaration complete dans mon fichier .h
