Undeclared functions in Markup.cpp

[push2312]

Some functions in Markup.cpp file are not declared. Please look into the matter and rectify.

I have build the code using CMake MinGW Makefiles (GUI) and encountering the following error while making the files using mingw32-make, in the Markup.cpp file.

C:\Users\AMD\OneDrive - Indian Institute of Technology Jodhpur\Qualisys\qualisys_cpp_sdk-master\qualisys_cpp_sdk-master\build> mingw32-make
[ 20%] Building CXX object CMakeFiles/qualisys_cpp_sdk.dir/Markup.cpp.obj
C:\Users\AMD\OneDrive - Indian Institute of Technology Jodhpur\Qualisys\qualisys_cpp_sdk-master\qualisys_cpp_sdk-master\Markup.cpp: In member function 'std::__cxx11::string CMarkup::x_TextToDoc(const char*, bool) const':
C:\Users\AMD\OneDrive - Indian Institute of Technology Jodhpur\Qualisys\qualisys_cpp_sdk-master\qualisys_cpp_sdk-master\Markup.cpp:732:44: error: 'strcpy_s' was not declared in this scope
strcpy_s(&pDest[nLen], nDestSize, pFound);
^
C:\Users\AMD\OneDrive - Indian Institute of Technology Jodhpur\Qualisys\qualisys_cpp_sdk-master\qualisys_cpp_sdk-master\Markup.cpp: In static member function 'static std::__cxx11::string CMarkup::Format(const char*, ...)':
C:\Users\AMD\OneDrive - Indian Institute of Technology Jodhpur\Qualisys\qualisys_cpp_sdk-master\qualisys_cpp_sdk-master\Markup.cpp:1182:80: error: '_vsnprintf_s' was not declared in this scope
int nWritten = _vsnprintf_s(&buffer[0], buffer.size(), len, fmt, marker);
^
CMakeFiles\qualisys_cpp_sdk.dir\build.make:75: recipe for target 'CMakeFiles/qualisys_cpp_sdk.dir/Markup.cpp.obj' failed
mingw32-make[2]: * [CMakeFiles/qualisys_cpp_sdk.dir/Markup.cpp.obj] Error 1
CMakeFiles\Makefile2:81: recipe for target 'CMakeFiles/qualisys_cpp_sdk.dir/all' failed
mingw32-make[1]: * [CMakeFiles/qualisys_cpp_sdk.dir/all] Error 2
Makefile:134: recipe for target 'all' failed
mingw32-make: * [all] Error 2