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error in cmake gui while configuring opencv 4 extra modules path [closed]

asked 2019-01-06 06:18:36 -0500

czjczjczj1 gravatar image

updated 2019-01-06 09:37:49 -0500

LBerger gravatar image

Hello everyone, I got these errors while i'm configuring the opencv 4 extra modules path and I didn't know what to do. Thanks for any help.

Could not find OpenBLAS include. Turning OpenBLAS_FOUND off                                                                                        
Could not find OpenBLAS lib. Turning OpenBLAS_FOUND off                                                                                              
Could NOT find BLAS (missing: BLAS_LIBRARIES)                                                                                                                                                            
LAPACK requires BLAS                                    
A library with LAPACK API not found. Please specify library location.                         
Could NOT find JNI (missing: JAVA_AWT_LIBRARY JAVA_JVM_LIBRARY JAVA_INCLUDE_PATH JAVA_INCLUDE_PATH2                                         
 JAVA_AWT_INCLUDE_PATH) 
VTK is not found. 
Please set -DVTK_DIR in CMake to VTK build directory, or to VTK install subdirectory with VTKConfig.cmake file
CMake Error at cmake/OpenCVModule.cmake:370 (_glob_locations):
  Syntax error in cmake code at

    E:/opencv4/opencv/sources/cmake/OpenCVModule.cmake:370

  when parsing string

    E:\opencv4\opencv_contrib-4.0.0\opencv_contrib-4.0.0\modules

  Invalid character escape '\o'.
Call Stack (most recent call first):
  modules/CMakeLists.txt:7 (ocv_glob_modules)
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Closed for the following reason the question is answered, right answer was accepted by czjczjczj1
close date 2019-01-06 09:17:36.209490

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answered 2019-01-06 07:06:58 -0500

berak gravatar image

updated 2019-01-06 07:07:53 -0500

please use forward slashes, even if it's on windows !

E:/opencv4/opencv_contrib-4.0.0/opencv_contrib-4.0.0/modules
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Asked: 2019-01-06 06:18:36 -0500

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Last updated: Jan 06