error LNK2019: unsolvable external symbol (OpenCV + VS2012) - opencv

Question

I've searched a lot but none of the answers help.
I added these things below:
include directory: D:\Program Files (x86)\opencv\build\include
library directory: D:\Program Files (x86)\opencv\build\x86\vc11\lib
additional library directory: D:\Program Files (x86)\opencv\build\x86\vc11\lib
additional dependency: %(AdditionalDependencies);opencv_core248d.lib;opencv_imgproc248d.lib;opencv_ml248d.lib;opencv_video248d.lib;opencv_features2d248d.lib;opencv_calib3d248d.lib;opencv_objdetect248d.lib;opencv_contrib248d.lib;opencv_legacy248d.lib;opencv_flann248d.lib;
I'm using 64-bit machine but adding x64 directory cause a lot of trouble, so I add x86 directory instead.
I used the test code below:
#include "opencv2/opencv.hpp"
using namespace cv;
int main()
{
Mat img = imread("../opencv.jpg");
if (img.empty())
{
fprintf(stderr, "Error: load image failed.");
return -1;
}
namedWindow("image", CV_WINDOW_AUTOSIZE);
imshow("image", img);
waitKey();
return 0;
}
And the problem is: (ignore the Chinese part)
1>test.obj : error LNK2019: unsolvable external symbol "void __cdecl cv::namedWindow(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,int)" (?namedWindow#cv##YAXABV?$basic_string#DU?$char_traits#D#std##V?$allocator#D#2##std##H#Z)，该符号在函数 _main 中被引用
1>test.obj : error LNK2019: unsolvable external symbol "int __cdecl cv::waitKey(int)" (?waitKey#cv##YAHH#Z)，该符号在函数 _main 中被引用
1>test.obj : error LNK2019: unsolvable external symbol "void __cdecl cv::imshow(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class cv::_InputArray const &)" (?imshow#cv##YAXABV?$basic_string#DU?$char_traits#D#std##V?$allocator#D#2##std##ABV_InputArray#1##Z)，该符号在函数 _main 中被引用
1>test.obj : error LNK2019: unsolvable external symbol "class cv::Mat __cdecl cv::imread(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,int)" (?imread#cv##YA?AVMat#1#ABV?$basic_string#DU?$char_traits#D#std##V?$allocator#D#2##std##H#Z)，该符号在函数 _main 中被引用
Thank you in advance!!

Answer 1

Please refer to the answer to this question. It's probably caused by the mixing up 64/32 bit libraries and application.
This instruction shows how to build opencv applications using VS in detail. Hope it would help.