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Hello, I'm totally new on opencv3.2, I'm trying to create a project that uses SIFT and SURF function for acuracy comparison. The problem I've encountered is : After the building process ended for Build x64 of ALL_BUILD (combining existing opencv3.2 resources with xfeature2d modules from Open_Contrib from github) using Microsoft Visual Studio 2017, these are the error listed in the form of:

Severity
Code
Description
Project
File
Line

1. Warning
   C4244
   '=': conversion from 'int' to 'char', possible loss of data
   (compiling source file C:\Users\User\Documents\Library\opencv_master\sources\modules\core\src\ocl.cpp)
   opencv_core
   C:\Program Files(x86)\MicrosoftVisualStudio\2017\Community\VC\Tools\MSVC\14.10.25017\include\algorithm
   946
2. Warning
   C4244
   'initializing': conversion from 'int' to 'unsigned char', possible loss of data (compiling source file C:\Users\User\Documents\Library\opencv_master\sources\modules\calib3d\src\fisheye.cpp)
   opencv_calib3d
   C:\ProgramFiles(x86)\MicrosoftVisualStudio\2017\Community\VC\Tools\MSVC\14.10.25017\include\xmemory0
   840
3. Error
   C2653
   'hal': is not a class or namespace name
   opencv_xfeatures2d
   C:\Users\User\Documents\Library\opencv_contrib-master\modules\xfeatures2d\src\sift.cpp
   340
4. Error
   C2661
   'cv::exp': no overloaded function takes 3 arguments
   opencv_xfeatures2d
   C:\Users\User\Documents\Library\opencv_contrib-master\modules\xfeatures2d\src\sift.cpp
   340
5. Error
   C2653
   'hal': is not a class or namespace name
   opencv_xfeatures2d
   C:\Users\User\Documents\Library\opencv_contrib-master\modules\xfeatures2d\src\sift.cpp
   341
6. Error
   C2660
   'cv::fastAtan2': function does not take 5 arguments
   opencv_xfeatures2d
   C:\Users\User\Documents\Library\opencv_contrib-master\modules\xfeatures2d\src\sift.cpp
   341
7. Error
   C2653
   'hal': is not a class or namespace name
   opencv_xfeatures2d
   C:\Users\User\Documents\Library\opencv_contrib-master\modules\xfeatures2d\src\sift.cpp
   342
8. Error
   C2660
   'cv::magnitude': function does not take 4 arguments
   opencv_xfeatures2d
   C:\Users\User\Documents\Library\opencv_contrib-master\modules\xfeatures2d\src\sift.cpp
   342
9. Error
   C2653
   'hal': is not a class or namespace name
   opencv_xfeatures2d
   C:\Users\User\Documents\Library\opencv_contrib-master\modules\xfeatures2d\src\sift.cpp
   623
10. Error
    C2660
    'cv::fastAtan2': function does not take 5 arguments
    opencv_xfeatures2d
    C:\Users\User\Documents\Library\opencv_contrib-master\modules\xfeatures2d\src\sift.cpp
    623
11. Error
    C2653
    'hal': is not a class or namespace name
    opencv_xfeatures2d
    C:\Users\User\Documents\Library\opencv_contrib-master\modules\xfeatures2d\src\sift.cpp
    624
12. Error
    C2660
    'cv::magnitude': function does not take 4 arguments
    opencv_xfeatures2d
    C:\Users\User\Documents\Library\opencv_contrib-master\modules\xfeatures2d\src\sift.cpp
    624
13. Error
    C2653
    'hal': is not a class or namespace name
    opencv_xfeatures2d
    C:\Users\User\Documents\Library\opencv_contrib-master\modules\xfeatures2d\src\sift.cpp
    625
14. Error
    C2661
    'cv::exp': no overloaded function takes 3 arguments
    opencv_xfeatures2d
    C:\Users\User\Documents\Library\opencv_contrib-master\modules\xfeatures2d\src\sift.cpp
    625
15. Warning
    C4838
    conversion from 'int' to '::size_t' requires a narrowing conversion
    opencv_xfeatures2d
    C:\Users\User\Documents\Library\opencv_contrib-master\modules\xfeatures2d\src\surf.ocl.cpp
    207
16. Warning
    C4838
    conversion from 'int' to '::size_t' requires a narrowing conversion
    opencv_xfeatures2d
    C:\Users\User\Documents\Library\opencv_contrib-master\modules\xfeatures2d\src\surf.ocl.cpp
    263
17. Warning
    C4244
    'initializing': conversion from 'int' to 'uchar', possible loss of data (compiling source file C:\Users\User\Documents\Library\opencv_master\sources\modules\stitching\src\exposure_compensate.cpp)
    opencv_stitching
    C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.10.25017\include\utility
    217
18. Error
    LNK1104
    cannot open file '....\lib\Debug\opencv_xfeatures2d330d.lib'
    opencv_test_xfeatures2d
    C:\Users\User\Documents\Library\opencv_master\build\modules\xfeatures2d\LINK
    1
19. Error
    LNK1104
    cannot open file '....\lib\Debug\opencv_xfeatures2d330d.lib'
    opencv_stitching
    C:\Users\User\Documents\Library\opencv_master\build\modules\stitching\LINK
    1
20. Error
    LNK1104
    cannot open file '....\lib\Debug\opencv_stitching330d.lib'
    opencv_perf_stitching
    C:\Users\User\Documents\Library\opencv_master\build\modules\stitching\LINK
    1
21. Error
    LNK1104
    cannot open file '....\lib\Debug\opencv_xfeatures2d330d.lib'
    opencv_perf_xfeatures2d
    C:\Users\User\Documents\Library\opencv_master\build\modules\xfeatures2d\LINK
    1
22. Error
    LNK1104
    cannot open file '....\lib\Debug\opencv_stitching330d.lib'
    opencv_python3
    C:\Users\User\Documents\Library\opencv_master\build\modules\python3\LINK
    1
23. Error
    LNK1104
    cannot open file '....\lib\Debug\opencv_stitching330d.lib'
    opencv_test_stitching
    C:\Users\User\Documents\Library\opencv_master\build\modules\stitching\LINK
    1

Is the error caused by MVS itself or I missed certain files from opencv? If the problem has been solved previously, can anyone provide the link to the topic? Thank you.