在托管c++中使用stlport

Question

是否可以在托管C++ DLL中使用stlport？

在我的项目中，我得到了几个“未解析的令牌”--来自stlport内容的链接器的错误。例如：

1>moc_ParentWidget.obj : error LNK2020: unresolved token (0A000819) "public: __thiscall stlp_std::allocator<unsigned short>::~allocator<unsigned short>(void)" (??1?$allocator@G@stlp_std@@$$FQAE@XZ)
1>ParentWidget.obj : error LNK2028: unresolved token (0A0008EB) "public: __thiscall stlp_std::allocator<unsigned short>::~allocator<unsigned short>(void)" (??1?$allocator@G@stlp_std@@$$FQAE@XZ) referenced in function "public: class stlp_std::allocator<unsigned short> __thiscall stlp_std::vector<unsigned short,class stlp_std::allocator<unsigned short> >::get_allocator(void)const " (?get_allocator@?$vector@GV?$allocator@G@stlp_std@@@stlp_std@@$$FQBE?AV?$allocator@G@2@XZ)
1>Terra3DViewNet.obj : error LNK2028: unresolved token (0A00087D) "public: __thiscall stlp_std::allocator<unsigned short>::~allocator<unsigned short>(void)" (??1?$allocator@G@stlp_std@@$$FQAE@XZ) referenced in function "public: class stlp_std::allocator<unsigned short> __thiscall stlp_std::vector<unsigned short,class stlp_std::allocator<unsigned short> >::get_allocator(void)const " (?get_allocator@?$vector@GV?$allocator@G@stlp_std@@@stlp_std@@$$FQBE?AV?$allocator@G@2@XZ)
1>moc_ParentWidget.obj : error LNK2028: unresolved token (0A000B9F) "public: __thiscall stlp_std::priv::_STLP_alloc_proxy<unsigned short *,unsigned short,class stlp_std::allocator<unsigned short> >::~_STLP_alloc_proxy<unsigned short *,unsigned short,class stlp_std::allocator<unsigned short> >(void)" (??1?$_STLP_alloc_proxy@PAGGV?$allocator@G@stlp_std@@@priv@stlp_std@@$$FQAE@XZ) referenced in function "public: __thiscall stlp_std::priv::_Vector_base<unsigned short,class stlp_std::allocator<unsigned short> >::_Vector_base<unsigned short,class stlp_std::allocator<unsigned short> >(unsigned int,class stlp_std::allocator<unsigned short> const &)" (??0?$_Vector_base@GV?$allocator@G@stlp_std@@@priv@stlp_std@@$$FQAE@IABV?$allocator@G@2@@Z)
1>ParentWidget.obj : error LNK2028: unresolved token (0A000CC2) "public: __thiscall stlp_std::priv::_STLP_alloc_proxy<unsigned short *,unsigned short,class stlp_std::allocator<unsigned short> >::~_STLP_alloc_proxy<unsigned short *,unsigned short,class stlp_std::allocator<unsigned short> >(void)" (??1?$_STLP_alloc_proxy@PAGGV?$allocator@G@stlp_std@@@priv@stlp_std@@$$FQAE@XZ) referenced in function "public: __thiscall stlp_std::priv::_Vector_base<unsigned short,class stlp_std::allocator<unsigned short> >::_Vector_base<unsigned short,class stlp_std::allocator<unsigned short> >(unsigned int,class stlp_std::allocator<unsigned short> const &)" (??0?$_Vector_base@GV?$allocator@G@stlp_std@@@priv@stlp_std@@$$FQAE@IABV?$allocator@G@2@@Z)
1>Terra3DViewNet.obj : error LNK2028: unresolved token (0A000C5B) "public: __thiscall stlp_std::priv::_STLP_alloc_proxy<unsigned short *,unsigned short,class stlp_std::allocator<unsigned short> >::~_STLP_alloc_proxy<unsigned short *,unsigned short,class stlp_std::allocator<unsigned short> >(void)" (??1?$_STLP_alloc_proxy@PAGGV?$allocator@G@stlp_std@@@priv@stlp_std@@$$FQAE@XZ) referenced in function "public: __thiscall stlp_std::priv::_Vector_base<unsigned short,class stlp_std::allocator<unsigned short> >::_Vector_base<unsigned short,class stlp_std::allocator<unsigned short> >(unsigned int,class stlp_std::allocator<unsigned short> const &)" (??0?$_Vector_base@GV?$allocator@G@stlp_std@@@priv@stlp_std@@$$FQAE@IABV?$allocator@G@2@@Z)
1>moc_ParentWidget.obj : error LNK2020: unresolved token (0A000DE1) "public: void __thiscall stlp_std::allocator<unsigned short>::deallocate(unsigned short *,unsigned int)" (?deallocate@?$allocator@G@stlp_std@@$$FQAEXPAGI@Z)
1>ParentWidget.obj : error LNK2028: unresolved token (0A000F27) "public: void __thiscall stlp_std::allocator<unsigned short>::deallocate(unsigned short *,unsigned int)" (?deallocate@?$allocator@G@stlp_std@@$$FQAEXPAGI@Z) referenced in function "public: __thiscall stlp_std::priv::_Vector_base<unsigned short,class stlp_std::allocator<unsigned short> >::~_Vector_base<unsigned short,class stlp_std::allocator<unsigned short> >(void)" (??1?$_Vector_base@GV?$allocator@G@stlp_std@@@priv@stlp_std@@$$FQAE@XZ)
...

我检查了stlport library/DLL中是否包含这些函数，以及这些函数是否使用了稍微不同的未修饰名称。所以我认为调用约定有问题！？有什么想法吗？

Answer 1

我解决了这个问题。问题是在编译stlport时，将wchar_t视为内置类型，而编译.NET部件时没有使用此选项。

正因为如此，wchar_t在.NET中被视为无符号短码，并导致无法解析的外部符号。

Answer 2

C++编译器使用name mangling，例如。使用MSVC++ 6/7编译时，"void h(int)“变为"?h@@YAXH@Z”

然而，不同的编译器，甚至不同的编译器版本之间的名称转换是不同的。您的DLL可能是使用不同的编译器或使用不同名称的较旧版本的编译器编译的。尝试使用您正在使用的编译器重新编译库。