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CMake Error at C:Users…Desktopimgwarp-opencvimgwarp-opencvsrcCMakeLists.txt:2 (FIND_PACKAGE)

cmake is not working in opencv c++ projectCMake still not working with OpenCVError while building CI2CV using cmakeError configuring OpenCV project with CMake on WindowsCMake Error at CMakeLists.txt:3 (find_package)CMake only accepting `find_package(Qt5Widgets REQUIRED)` in add_subdirectory, not in root projectCompilation project with Cmake . I'm getting an errorCMake not providing “Findlibusb-1.0.cmake” errorCmake errors when using LLVM 5.0.0 from brewCMake find_package for FindLibXml2

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0

I am using Window 10, Visual Studio 2017. I have installed OpenCV properly and I can run some basic projects of C++ OpenCV that can be found around the internet.
I have also followed this video which shows How to Build Open Source Projects Using CMake and Visual Studio.

But, I can not run this project on my machine. I try File->Open->CMake to open the CMakeLists.txt which can be found in the downloaded repository, and I get this error:

CMake Error at C:UsersMajidDesktopimgwarp-opencvimgwarp-opencvsrcCMakeLists.txt:2 (FIND_PACKAGE):
 By not providing "FindOpenCV.cmake" in CMAKE_MODULE_PATH this project has
 asked CMake to find a package configuration file provided by "OpenCV", but
 CMake did not find one.

 Could not find a package configuration file provided by "OpenCV" with any
 of the following names:

 OpenCVConfig.cmake
 opencv-config.cmake

 Add the installation prefix of "OpenCV" to CMAKE_PREFIX_PATH or set
 "OpenCV_DIR" to a directory containing one of the above files. If "OpenCV"
 provides a separate development package or SDK, be sure it has been
 installed.

I think I must extract the downloaded opencv-4.0.1-vc14_vc15.exe file somewhere in the project folder and link the CMakeLists.txt file (which one?) to the OpenCVConfig.cmake which is in the extracted opencv. Or maybe not.

I have also CMake gui and if I should run it that way I will appreciate that you explain it that way instead of using Visual Studio File->Open->CMake. No matter how, any way that helps me run this project is welcome. Please explain it step by step.

In one line (forget all the above): What should I do to run this project properly?

c++ opencv image-processing visual-c++ cmake

share|improve this question

edited Mar 28 at 11:33

Majid Alaeinia

asked Mar 27 at 22:54

Majid AlaeiniaMajid Alaeinia

36922 silver badges1414 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  As for searching for OpenCV, you definitely need OpenCV installed with its OpenCVConfig.cmake file. Then find installation directory of OpenCV. When build your project, in CMake GUI create CMAKE_PREFIX_PATH cache entry (of type STRING, or PATH) and set its value to the directory with OpenCV installation. Or find location of OpenCVConfig.cmake file on your machine, and assign this location to the OpenCV_DIR cache entry. BTW, this is what is written in the error message.
  
  – Tsyvarev
  Mar 28 at 10:34
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  OpenCV_DIR is a CMake cache entry. Please, re-read my previous comment, it explains how to set this entry.
  
  – Tsyvarev
  Mar 28 at 11:40
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  As you build the project directly from Visual Studio, you don't need to use CMake GUI instead - Visual Studio already provides needed user interface. You may find CMake cache entries in menu CMake / Cache / View CMakeCache.
  
  – Tsyvarev
  Mar 28 at 12:30
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  OpenCV_DIR should contain directory, not a file. Also, as it is CMake variable, it should use "generic" path separator, not a one used by Windows itself. Assign C:/Users/Majid/Desktop/imgwarp-opencv/imgwarp-opencv/src/opencv/build to that variable.
  
  – Tsyvarev
  Mar 28 at 13:32
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Yes, install QT.
  
  – Tsyvarev
  Mar 28 at 15:12
  

  
  
  
  

 | 
show 9 more comments

0

I am using Window 10, Visual Studio 2017. I have installed OpenCV properly and I can run some basic projects of C++ OpenCV that can be found around the internet.
I have also followed this video which shows How to Build Open Source Projects Using CMake and Visual Studio.

But, I can not run this project on my machine. I try File->Open->CMake to open the CMakeLists.txt which can be found in the downloaded repository, and I get this error:

CMake Error at C:UsersMajidDesktopimgwarp-opencvimgwarp-opencvsrcCMakeLists.txt:2 (FIND_PACKAGE):
 By not providing "FindOpenCV.cmake" in CMAKE_MODULE_PATH this project has
 asked CMake to find a package configuration file provided by "OpenCV", but
 CMake did not find one.

 Could not find a package configuration file provided by "OpenCV" with any
 of the following names:

 OpenCVConfig.cmake
 opencv-config.cmake

 Add the installation prefix of "OpenCV" to CMAKE_PREFIX_PATH or set
 "OpenCV_DIR" to a directory containing one of the above files. If "OpenCV"
 provides a separate development package or SDK, be sure it has been
 installed.

I think I must extract the downloaded opencv-4.0.1-vc14_vc15.exe file somewhere in the project folder and link the CMakeLists.txt file (which one?) to the OpenCVConfig.cmake which is in the extracted opencv. Or maybe not.

I have also CMake gui and if I should run it that way I will appreciate that you explain it that way instead of using Visual Studio File->Open->CMake. No matter how, any way that helps me run this project is welcome. Please explain it step by step.

In one line (forget all the above): What should I do to run this project properly?

c++ opencv image-processing visual-c++ cmake

share|improve this question

edited Mar 28 at 11:33

Majid Alaeinia

asked Mar 27 at 22:54

Majid AlaeiniaMajid Alaeinia

36922 silver badges1414 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  As for searching for OpenCV, you definitely need OpenCV installed with its OpenCVConfig.cmake file. Then find installation directory of OpenCV. When build your project, in CMake GUI create CMAKE_PREFIX_PATH cache entry (of type STRING, or PATH) and set its value to the directory with OpenCV installation. Or find location of OpenCVConfig.cmake file on your machine, and assign this location to the OpenCV_DIR cache entry. BTW, this is what is written in the error message.
  
  – Tsyvarev
  Mar 28 at 10:34
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  OpenCV_DIR is a CMake cache entry. Please, re-read my previous comment, it explains how to set this entry.
  
  – Tsyvarev
  Mar 28 at 11:40
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  As you build the project directly from Visual Studio, you don't need to use CMake GUI instead - Visual Studio already provides needed user interface. You may find CMake cache entries in menu CMake / Cache / View CMakeCache.
  
  – Tsyvarev
  Mar 28 at 12:30
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  OpenCV_DIR should contain directory, not a file. Also, as it is CMake variable, it should use "generic" path separator, not a one used by Windows itself. Assign C:/Users/Majid/Desktop/imgwarp-opencv/imgwarp-opencv/src/opencv/build to that variable.
  
  – Tsyvarev
  Mar 28 at 13:32
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Yes, install QT.
  
  – Tsyvarev
  Mar 28 at 15:12
  

  
  
  
  

 | 
show 9 more comments

I am using Window 10, Visual Studio 2017. I have installed OpenCV properly and I can run some basic projects of C++ OpenCV that can be found around the internet.
I have also followed this video which shows How to Build Open Source Projects Using CMake and Visual Studio.

But, I can not run this project on my machine. I try File->Open->CMake to open the CMakeLists.txt which can be found in the downloaded repository, and I get this error:

CMake Error at C:UsersMajidDesktopimgwarp-opencvimgwarp-opencvsrcCMakeLists.txt:2 (FIND_PACKAGE):
 By not providing "FindOpenCV.cmake" in CMAKE_MODULE_PATH this project has
 asked CMake to find a package configuration file provided by "OpenCV", but
 CMake did not find one.

 Could not find a package configuration file provided by "OpenCV" with any
 of the following names:

 OpenCVConfig.cmake
 opencv-config.cmake

 Add the installation prefix of "OpenCV" to CMAKE_PREFIX_PATH or set
 "OpenCV_DIR" to a directory containing one of the above files. If "OpenCV"
 provides a separate development package or SDK, be sure it has been
 installed.

I think I must extract the downloaded opencv-4.0.1-vc14_vc15.exe file somewhere in the project folder and link the CMakeLists.txt file (which one?) to the OpenCVConfig.cmake which is in the extracted opencv. Or maybe not.

I have also CMake gui and if I should run it that way I will appreciate that you explain it that way instead of using Visual Studio File->Open->CMake. No matter how, any way that helps me run this project is welcome. Please explain it step by step.

In one line (forget all the above): What should I do to run this project properly?

c++ opencv image-processing visual-c++ cmake

share|improve this question

edited Mar 28 at 11:33

Majid Alaeinia

asked Mar 27 at 22:54

Majid AlaeiniaMajid Alaeinia

36922 silver badges1414 bronze badges

CMake Error at C:UsersMajidDesktopimgwarp-opencvimgwarp-opencvsrcCMakeLists.txt:2 (FIND_PACKAGE):
 By not providing "FindOpenCV.cmake" in CMAKE_MODULE_PATH this project has
 asked CMake to find a package configuration file provided by "OpenCV", but
 CMake did not find one.

 Could not find a package configuration file provided by "OpenCV" with any
 of the following names:

 OpenCVConfig.cmake
 opencv-config.cmake

 Add the installation prefix of "OpenCV" to CMAKE_PREFIX_PATH or set
 "OpenCV_DIR" to a directory containing one of the above files. If "OpenCV"
 provides a separate development package or SDK, be sure it has been
 installed.

share|improve this question

edited Mar 28 at 11:33

Majid Alaeinia

asked Mar 27 at 22:54

Majid AlaeiniaMajid Alaeinia

36922 silver badges1414 bronze badges

share|improve this question

edited Mar 28 at 11:33

Majid Alaeinia

asked Mar 27 at 22:54

Majid AlaeiniaMajid Alaeinia

36922 silver badges1414 bronze badges

asked Mar 27 at 22:54

Majid AlaeiniaMajid Alaeinia

36922 silver badges1414 bronze badges

asked Mar 27 at 22:54

Majid AlaeiniaMajid Alaeinia

36922 silver badges1414 bronze badges