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Editorial Team
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Asked: 2026-05-17T15:10:04+00:00

I’ve just migrated a solution containing c++ and c# projects from VS2008 to VS2010

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I’ve just migrated a solution containing c++ and c# projects from VS2008 to VS2010 and got a strange problem.

When I select “rebuild all”, everything compiles and links as I would expect it to do.

Then I change some c++ source file (just add a space), build the project, I get several thousands of linking errors like these:

GDlgPackerListe.obj : error LNK2028: Nicht aufgelöstes Token (0A0000C7) ""public: bool __thiscall LList::Add(class LBString const &)" (?Add@LList@@$$FQAE_NABVLBString@@@Z)", auf das in Funktion ""public: virtual void __thiscall LRcPackerListe::HookRunReport(class LFortschritt &)" (?HookRunReport@LRcPackerListe@@$$FUAEXAAVLFortschritt@@@Z)" verwiesen wird.
Db_Lieferschein2.obj : error LNK2020: Nicht aufgelöstes Token (0A0000E6) "public: bool __thiscall LList::Add(class LBString const &)" (?Add@LList@@$$FQAE_NABVLBString@@@Z).
bmed.obj : error LNK2028: Nicht aufgelöstes Token (0A00014D) ""public: bool __thiscall LList::Add(class LBString const &)" (?Add@LList@@$$FQAE_NABVLBString@@@Z)", auf das in Funktion ""public: virtual long __thiscall MENUKB::Methode(long,long)" (?Methode@MENUKB@@$$FUAEJJJ@Z)" verwiesen wird.
GDlgPackerListe.obj : error LNK2028: Nicht aufgelöstes Token (0A0000C9) ""public: void __thiscall LList::Sort(void)" (?Sort@LList@@$$FQAEXXZ)", auf das in Funktion ""public: virtual void __thiscall LRcPackerListe::HookRunReport(class LFortschritt &)" (?HookRunReport@LRcPackerListe@@$$FUAEXAAVLFortschritt@@@Z)" verwiesen wird.
Dlg_Gutschrift.obj : error LNK2020: Nicht aufgelöstes Token (0A000128) "public: virtual __thiscall LBaseType::~LBaseType(void)" (??1LBaseType@@$$FUAE@XZ).
Module_Damals.lib(svSuchAltLink.obj) : error LNK2001: Nicht aufgelöstes externes Symbol ""public: __thiscall SView::SView(void)" (??0SView@@QAE@XZ)".
Module_Damals.lib(svShowEMF.obj) : error LNK2001: Nicht aufgelöstes externes Symbol ""public: virtual void __thiscall SView::HookValueChanged(unsigned __int64)" (?HookValueChanged@SView@@UAEX_K@Z)".

When I hit “rebuild all” it recompiles and links without any errors or even warnings and produces a working exe.

I’m using Visual Studio 2010 final (german edition).

Whats going on here? Or, more important: how do I get the linker to work correctly??

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1 Answer

  1. Editorial Team

    Well, after some head scratching, we seem to have found the answer. The problems, in our case at least, were two-fold:

    1. We had set up project dependencies, but weren’t using the newer ‘project to project’ references as a means of linking projects in to the target. Seems the old dependencies dialog isn’t the place to go any more.

    2. We had some dubious code that had crept in where a virtual function was being defined but not implemented in a derived class – the base class had a default implementation. Why this isn’t an error in rebuild all I don’t know.

    The following explains things better than I did 🙂 http://blogs.msdn.com/b/vcblog/archive/2010/03/02/visual-studio-2010-c-project-upgrade-guide.aspx

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