unresolved external symbol

[ranjitvictor]

I get the follwing error while rebuilding my app,

fosmsg.lib(NORMSF1.OBJ) : error LNK2001: unresolved external symbol "public: __thiscall TJIdxRecClass::TJIdxRecClass(void)" (??0TJIdxRecClass@@QAE@XZ)

can somebody explain to me how the lib and obj files are related?
If the above question is wrong then why is this happening?

 

[mingis]

.lib is a collection of .obj's
The message above means, that in NORMSF1.OBJ inside of library fosmsg.lib is reference to external symbol, not defined in any .obj's or .lib's of your project.