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Questions - lnk2005

I am getting LNK2005, LNK2001 and LNK1120 while using virtual function in my Program

I am a beginner so this problem might seem trivial to you. So I have the following files: base.h derived.h base.cpp derived.cpp TestCpp.cpp base.h #include <iostream> namespace App { clas...
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Anirudh Kanaparthy

c++

oop

namespaces

lnk2001

lnk2005

Votes: 0

Answers: 2

Latest Answer

The problem is that you've only declared the virtual function Print in class Base but not defined it. And from C++03 Standard: 10.3 Virtual functions [class.virtual] A virtual function declared in a ...
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Jason

C++ LNK2005 already defined in B_calculating.obj

Errors: LNK2005 "private: static char const * const boost::json::key_value_pair::empty_" (?empty_@key_value_pair@json@boost@@0QBDB) already defined in B_calculating.obj LNK2005 "private...
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Vernadsky

c++

lnk2005

Votes: 0

Answers: 1

Latest Answer

There is a clue in the boost/json/src.hpp header: This file is meant to be included once, in a translation unit of the program. You should only include boost/json/src.hpp in one cpp file. You should...
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Alan Birtles

&quot;LNK2005 DLLMain already defined ...&quot; conflict in Linker using MSVC

I have a C++ project which up to now had no problems compiling and linking but due to a recent computer crash I had to re-install everything including Visual Studio and all my VCPKG packages. (I am us...
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David A

c++

tbb

openblas

lnk2005

dllmain

Votes: 0

Answers: 1

Latest Answer

OK - I figured out a solution that does not require /FORCE:MULTIPLE It seems either both or one of OPENBLAS and TBB cannot be built statically even though both packages compile fine with the triplet x...
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David A

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