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Showing content from https://github.com/log4cplus/log4cplus/issues/455 below:

CallbackAppender · Issue #455 · log4cplus/log4cplus · GitHub

Describe your problem here.

  1. Pull the code from:
    SHA-1: fe3d648
  1. Use VS2019 16.4 to open the solution, update the whole project to VS2019

  2. Change the C++ language to ISO C++17 Standard (std:c++17) in VS2019

  3. compile the static lib "log4cplusS"

  4. after I use it in an vs2019 test demo, I have this error:
    error LNK2001: unresolved external symbol "public: __cdecl log4cplus::CallbackAppender::CallbackAppender(void (__cdecl*)(void *,wchar_t const *,wchar_t const *,int,wchar_t const *,wchar_t const *,unsigned __int64,unsigned long,wchar_t const *,wchar_t const *,int),void *)"
    (??0CallbackAppender@log4cplus@@qeaa@P6AXPEAXPEB_W1H11_KK11H@Z0@Z)

The code of 2.0.4 works good without this issue. Could you help me to solve it so I can update my project. Thank you very much.

Also, provide the following information:


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