help for the link error, thanks!

Error 100 error LNK2001: unresolved external symbol "protected: virtual void __thiscall TDocStd_Application::OnAbortTransaction(class Handle_TDocStd_Document const &)" (?OnAbortTransaction@TDocStd_Application@@MAEXABVHandle_TDocStd_Document@@@Z) OcafApplication.obj
Error 99 error LNK2001: unresolved external symbol "protected: virtual void __thiscall TDocStd_Application::OnCommitTransaction(class Handle_TDocStd_Document const &)" (?OnCommitTransaction@TDocStd_Application@@MAEXABVHandle_TDocStd_Document@@@Z) OcafApplication.obj
Error 98 error LNK2001: unresolved external symbol "protected: virtual void __thiscall TDocStd_Application::OnOpenTransaction(class Handle_TDocStd_Document const &)" (?OnOpenTransaction@TDocStd_Application@@MAEXABVHandle_TDocStd_Document@@@Z) OcafApplication.obj
Error 1 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) SweepFeatureFV.obj
Error 2 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) SweepFeatureTool.obj
Error 3 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) WorkspaceBar.obj
Error 4 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) ShapePickUp.obj
Error 6 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) SketchEditionTool.obj
Error 7 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) SweepFeature.obj
Error 8 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) RectAttributeFV.obj
Error 9 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) RevoluteFeature.obj
Error 10 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) RevoluteFeatureFV.obj
Error 11 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) RevoluteFeatureTool.obj
Error 12 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) PrismHeightFV.obj
Error 13 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) Product.obj
Error 14 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) RectanglePacket.obj
Error 15 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) RectangleTool.obj
Error 16 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) PolygonAttributeFV.obj
Error 17 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) PolygonPacket.obj
Error 18 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) PolygonTool.obj
Error 19 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) PrismFeature.obj
Error 20 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) MyPacket.obj
Error 21 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) MySearchFile.obj
Error 22 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) MyTreeCtrl.obj
Error 23 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) MyTreeCtrl_2.obj
Error 24 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) MainFrm.obj
Error 25 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) MouseTool.obj
Error 26 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) Mydata.obj
Error 27 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) MyFeature.obj
Error 28 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) HollowFeatureTool.obj
Error 29 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) LineAttributeFV.obj
Error 30 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) LinePacket.obj
Error 31 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) LineTool.obj
Error 32 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) GeneralAlgorithm.obj
Error 33 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) GlobalView.obj
Error 34 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) HollowFeature.obj
Error 35 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) HollowFeatureFV.obj
Error 36 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) FileSaveTool.obj
Error 37 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) FilletFeature.obj
Error 38 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) FilletFeatureFV.obj
Error 39 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) FilletFeatureTool.obj
Error 40 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) ECADViewPart.obj
Error 41 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) ECADViewPart2.obj
Error 42 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) FeatureCreation.obj
Error 43 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) FileSaveFormView.obj
Error 44 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) ECAD.obj
Error 45 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) ECADDoc.obj
Error 46 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) ECADDocPart2.obj
Error 47 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) ECADView.obj
Error 48 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) DraftFeature.obj
Error 49 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) DraftFeatureFV.obj
Error 50 error LNK2001: unresolved external symbol "public: __thiscall TDF_Transaction::TDF_Transaction(class TCollection_AsciiString const &)" (??0TDF_Transaction@@QAE@ABVTCollection_AsciiString@@@Z) DraftFeatureTool.obj

sergey zaritchny's picture

Hi,
All undefined references refer to TKLCAF.lib.
It seems you should check additional libraries directories
and additional dependencies of your project.
Regards

lovepipy's picture

Got it, Thanks a lot, sergey.

lovepipy's picture

By the way, how to generally determine the missing library from the link errors?

sergey zaritchny's picture

Hi,
For example you got a message like next:
"error LNK2001: unresolved external symbol "protected: virtual void __thiscall TDocStd_Application:: ...."
You would like to know which library is missing.
For this you should find which library contains unit named "TDocStd".
In OCCT file named "PACKAGES" contains a list of units.
So, you may simply grep OCCT sources with two keys: key1(file name) = PACKAGES, key2(unit name) = TDocStd.
Regards

lovepipy's picture

Hi sergey, I see. Thank you so much for your patient help!!!!!!!!!