Solve msvcp120d DLL and msvcr120d DLL missing

VS2015 To configure OpenCV2.4.xx after , There will be the following problems ：

reason ： Microsoft Visual Studio The end user license agreement prohibits the release of debug versions （ After the name D) Of DLL Of ,msvcp120d.dll and msvcr120d.dll yes VS2013 Debug library files in version , Exists in path ：D:\softwares\Microsoft Visual Studio 12.0\VC\redist\x86\Microsoft.VC120.CRT in ,VS2015 There is only msvcp140d.dll and msvcr140d.dll, however OpenCV2.4.xx The maximum library version used is VC12, The library has not been upgraded VC14, We need to use VS2013 Debug library file , So it will cause msvcp120d.dll and msvcr120d.dll The lack of .

resolvent ： The online method is to download msvcp120d.dll and msvcr120d.dll To the system path ：C:\Windows\System32 or C:\Windows\SysWOW64. But I don't think it's advisable , Adding asking price to the system path at will is easy to conflict with the installation of other software . We can put it in OpenCV In library path ：D:\softwares\OpenCV\opencv\build\x86\vc12\bin. So when we don't use opencv These two library files will not be called , To compare safety .