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OpenCV 4.01 face module for Java

Hello, I have a same problem as in this not answered question. https://stackoverflow.com/questions/51488757/opencv-build-to-java-not-generating-a-java-folder-in-build#

OpenCV 4.01 face module for Java

Hello, I have a same problem as in this not answered question. question on stackoverflow. Difference is library version, and im trying to build with face module. https://stackoverflow.com/questions/51488757/opencv-build-to-java-not-generating-a-java-folder-in-build#

OpenCV 4.01 face module for Java

Hello, Hello, I have a same problem as in this not answered question on stackoverflow. Difference is library version, and im am trying to build OpenCV from source to .jar, since I need face module. I followed this tutorial https://medium.freecodecamp.org/facial-recognition-using-opencv-in-java-92fa40c22f62

Installed ant,Cmake and MinGW, setted Cmake configurations and this is my Cmake log:


Could NOT find PythonInterp (missing: PYTHON_EXECUTABLE) (Required is at least version "3.2") AVX_512F is not supported by C++ compiler AVX512_SKX is not supported by C++ compiler Dispatch optimization AVX512_SKX is not available, skipped libjpeg-turbo: VERSION = 1.5.3, BUILD = opencv-4.0.1-libjpeg-turbo 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. Found apache ant: D:/programi/apache-ant-1.10.5/bin/ant.bat (1.10.5) VTK is not found. Please set -DVTK_DIR in CMake to VTK build directory, or to VTK install subdirectory with VTKConfig.cmake file OpenCV Python: during development append to PYTHONPATH: D:/programi/opencv/buildSimple/python_loader Caffe: NO Protobuf: NO Glog: NO freetype2: NO harfbuzz: NO Module opencv_ovis disabled because OGRE3D was not found No preference for use of exported gflags CMake configuration set, and no hints for include/library directories provided. Defaulting to preferring an installed/exported gflags CMake configuration if available. Failed to find installed gflags CMake configuration, searching for gflags build directories exported with CMake. Failed to find gflags - Failed to find an installed/exported CMake configuration for gflags, will perform search for installed gflags components. Failed to find gflags - Could not find gflags include directory, set GFLAGS_INCLUDE_DIR to directory containing gflags/gflags.h Failed to find glog - Could not find glog include directory, set GLOG_INCLUDE_DIR to directory containing glog/logging.h Module opencv_sfm disabled because the following dependencies are not found: Eigen Glog/Gflags Excluding from source files list: <build>/modules/dnn/layers/layers_common.avx512_skx.cpp

General configuration for OpenCV 4.0.1 ===================================== Version control: unknown

Extra modules: Location (extra): D:/programi/opencv/opencv_contrib-4.0.1/modules Version control (extra): unknown

Platform: Timestamp: 2019-03-17T17:41:53Z Host: Windows 10.0.17134 AMD64 CMake: 3.14.0 CMake generator: MinGW Makefiles CMake build tool: D:/programi/minGW/mingw64/bin/mingw32-make.exe Configuration: Release

CPU/HW features: Baseline: SSE SSE2 SSE3 requested: SSE3 Dispatched code generation: SSE4_1 SSE4_2 FP16 AVX AVX2 requested: SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX SSE4_1 (5 files): + SSSE3 SSE4_1 SSE4_2 (1 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 (0 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX AVX (4 files): + SSSE3 SSE4_1 POPCNT SSE4_2 AVX AVX2 (11 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2

C/C++: Built as dynamic libs?: NO C++ Compiler: D:/programi/minGW/mingw64/bin/g++.exe (ver 8.1.0) C++ flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG C++ flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG C Compiler: D:/programi/minGW/mingw64/bin/gcc.exe C flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-narrowing -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -O3 -DNDEBUG -DNDEBUG C flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-narrowing -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -g -O0 -DDEBUG -D_DEBUG Linker flags (Release): -Wl,--gc-sections
Linker flags (Debug): -Wl,--gc-sections
ccache: NO Precompiled headers: YES Extra dependencies: ade comctl32 gdi32 ole32 setupapi ws2_32 avifil32 avicap32 winmm msvfw32 3rdparty dependencies: libprotobuf zlib libjpeg-turbo libwebp libpng libtiff libjasper IlmImf quirc

OpenCV modules: To be built: calib3d core dnn face module. https://stackoverflow.com/questions/51488757/opencv-build-to-java-not-generating-a-java-folder-in-build#features2d flann gapi highgui imgcodecs imgproc java java_bindings_generator ml objdetect photo stitching ts video videoio Disabled: aruco bgsegm bioinspired ccalib datasets dnn_objdetect dpm fuzzy hfs img_hash line_descriptor optflow phase_unwrapping plot python_bindings_generator reg rgbd saliency shape stereo structured_light superres surface_matching text tracking videostab world xfeatures2d ximgproc xobjdetect xphoto Disabled by dependency: - Unavailable: cnn_3dobj cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev cvv freetype hdf js matlab ovis python2 python3 sfm viz Applications: apps Documentation: NO Non-free algorithms: NO

Windows RT support: NO

GUI: Win32 UI: YES VTK support: NO

Media I/O: ZLib: build (ver 1.2.11) JPEG: build-libjpeg-turbo (ver 1.5.3-62) WEBP: build (ver encoder: 0x020e) PNG: build (ver 1.6.35) TIFF: build (ver 42 - 4.0.9) JPEG 2000: build (ver 1.900.1) OpenEXR: build (ver 1.7.1) HDR: YES SUNRASTER: YES PXM: YES PFM: YES

Video I/O: DC1394: NO FFMPEG: YES (prebuilt binaries) avcodec: YES (ver 58.35.100) avformat: YES (ver 58.20.100) avutil: YES (ver 56.22.100) swscale: YES (ver 5.3.100) avresample: YES (ver 4.0.0) GStreamer: NO DirectShow: YES

Parallel framework: none

Trace: YES (built-in)

Other third-party libraries: Lapack: NO Eigen: NO Custom HAL: NO Protobuf: build (3.5.1)

OpenCL: YES (no extra features) Include path: D:/programi/opencv/opencv-4.0.1/3rdparty/include/opencl/1.2 Link libraries: Dynamic load

Python (for build): C:/Program Files/Python/python.exe

Java:
ant: D:/programi/apache-ant-1.10.5/bin/ant.bat (ver 1.10.5) JNI: C:/Program Files/Java/jdk1.8.0_171/include C:/Program Files/Java/jdk1.8.0_171/include/win32 C:/Program Files/Java/jdk1.8.0_171/include Java wrappers: YES Java tests: NO

Install to: D:/programi/opencv/buildSimple/install


So when i build it, i have opencv.jar and i connected it with java so can import FaceRecognizer. Problem occurs when i start program, i get this exception:

Caused by: java.lang.UnsatisfiedLinkError: no opencv_java401 in java.library.path at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1864)

So when i search for opencv_java401.dll lib, there exist only libopencv_java401.dll.

As i saw in the Windows package from OpenCV, there is a Java folder in the build folder, and that does include the .jar file and an /x64 folder, however, now when i built it does not exists.

click to hide/show revision 4
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updated 2019-03-19 01:43:52 -0600

berak gravatar image

OpenCV 4.01 face module for Java

Hello, I am trying to build OpenCV from source to .jar, since I need face module. I followed this tutorial https://medium.freecodecamp.org/facial-recognition-using-opencv-in-java-92fa40c22f62

Installed ant,Cmake and MinGW, setted Cmake configurations and this is my Cmake log:


------------------------------------------------------------

Could NOT find PythonInterp (missing: PYTHON_EXECUTABLE) (Required is at least version "3.2")
AVX_512F is not supported by C++ compiler
AVX512_SKX is not supported by C++ compiler
Dispatch optimization AVX512_SKX is not available, skipped
libjpeg-turbo: VERSION = 1.5.3, BUILD = opencv-4.0.1-libjpeg-turbo
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.
Found apache ant: D:/programi/apache-ant-1.10.5/bin/ant.bat (1.10.5)
VTK is not found. Please set -DVTK_DIR in CMake to VTK build directory, or to VTK install subdirectory with VTKConfig.cmake file
OpenCV Python: during development append to PYTHONPATH: D:/programi/opencv/buildSimple/python_loader
Caffe:   NO
Protobuf:   NO
Glog:   NO
freetype2:   NO
harfbuzz:    NO
Module opencv_ovis disabled because OGRE3D was not found
No preference for use of exported gflags CMake configuration set, and no hints for include/library directories provided. Defaulting to preferring an installed/exported gflags CMake configuration if available.
Failed to find installed gflags CMake configuration, searching for gflags build directories exported with CMake.
Failed to find gflags - Failed to find an installed/exported CMake configuration for gflags, will perform search for installed gflags components.
Failed to find gflags - Could not find gflags include directory, set GFLAGS_INCLUDE_DIR to directory containing gflags/gflags.h
Failed to find glog - Could not find glog include directory, set GLOG_INCLUDE_DIR to directory containing glog/logging.h
Module opencv_sfm disabled because the following dependencies are not found: Eigen Glog/Gflags
Excluding from source files list: <build>/modules/dnn/layers/layers_common.avx512_skx.cpp

<BUILD>/modules/dnn/layers/layers_common.avx512_skx.cpp General configuration for OpenCV 4.0.1 ===================================== Version control: unknown

unknown Extra modules: Location (extra): D:/programi/opencv/opencv_contrib-4.0.1/modules Version control (extra): unknown

unknown Platform: Timestamp: 2019-03-17T17:41:53Z Host: Windows 10.0.17134 AMD64 CMake: 3.14.0 CMake generator: MinGW Makefiles CMake build tool: D:/programi/minGW/mingw64/bin/mingw32-make.exe Configuration: Release

Release CPU/HW features: Baseline: SSE SSE2 SSE3 requested: SSE3 Dispatched code generation: SSE4_1 SSE4_2 FP16 AVX AVX2 requested: SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX SSE4_1 (5 files): + SSSE3 SSE4_1 SSE4_2 (1 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 (0 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX AVX (4 files): + SSSE3 SSE4_1 POPCNT SSE4_2 AVX AVX2 (11 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2

AVX2 C/C++: Built as dynamic libs?: NO C++ Compiler: D:/programi/minGW/mingw64/bin/g++.exe (ver 8.1.0) C++ flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG C++ flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG C Compiler: D:/programi/minGW/mingw64/bin/gcc.exe C flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-narrowing -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -O3 -DNDEBUG -DNDEBUG C flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-narrowing -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -g -O0 -DDEBUG -D_DEBUG Linker flags (Release): -Wl,--gc-sections
Linker flags (Debug): -Wl,--gc-sections
ccache: NO Precompiled headers: YES Extra dependencies: ade comctl32 gdi32 ole32 setupapi ws2_32 avifil32 avicap32 winmm msvfw32 3rdparty dependencies: libprotobuf zlib libjpeg-turbo libwebp libpng libtiff libjasper IlmImf quirc

quirc OpenCV modules: To be built: calib3d core dnn face features2d flann gapi highgui imgcodecs imgproc java java_bindings_generator ml objdetect photo stitching ts video videoio Disabled: aruco bgsegm bioinspired ccalib datasets dnn_objdetect dpm fuzzy hfs img_hash line_descriptor optflow phase_unwrapping plot python_bindings_generator reg rgbd saliency shape stereo structured_light superres surface_matching text tracking videostab world xfeatures2d ximgproc xobjdetect xphoto Disabled by dependency: - Unavailable: cnn_3dobj cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev cvv freetype hdf js matlab ovis python2 python3 sfm viz Applications: apps Documentation: NO Non-free algorithms: NO

NO Windows RT support: NO

NO GUI: Win32 UI: YES VTK support: NO

NO Media I/O: ZLib: build (ver 1.2.11) JPEG: build-libjpeg-turbo (ver 1.5.3-62) WEBP: build (ver encoder: 0x020e) PNG: build (ver 1.6.35) TIFF: build (ver 42 - 4.0.9) JPEG 2000: build (ver 1.900.1) OpenEXR: build (ver 1.7.1) HDR: YES SUNRASTER: YES PXM: YES PFM: YES

YES Video I/O: DC1394: NO FFMPEG: YES (prebuilt binaries) avcodec: YES (ver 58.35.100) avformat: YES (ver 58.20.100) avutil: YES (ver 56.22.100) swscale: YES (ver 5.3.100) avresample: YES (ver 4.0.0) GStreamer: NO DirectShow: YES

YES Parallel framework: none

none Trace: YES (built-in)

(built-in) Other third-party libraries: Lapack: NO Eigen: NO Custom HAL: NO Protobuf: build (3.5.1)

(3.5.1) OpenCL: YES (no extra features) Include path: D:/programi/opencv/opencv-4.0.1/3rdparty/include/opencl/1.2 Link libraries: Dynamic load

load Python (for build): C:/Program Files/Python/python.exe

Files/Python/python.exe Java:
ant: D:/programi/apache-ant-1.10.5/bin/ant.bat (ver 1.10.5) JNI: C:/Program Files/Java/jdk1.8.0_171/include C:/Program Files/Java/jdk1.8.0_171/include/win32 C:/Program Files/Java/jdk1.8.0_171/include Java wrappers: YES Java tests: NO

NO Install to: D:/programi/opencv/buildSimple/install


D:/programi/opencv/buildSimple/install -----------------------------------------------------

So when i build it, i have opencv.jar and i connected it with java so can import FaceRecognizer. Problem occurs when i start program, i get this exception:

Caused by: java.lang.UnsatisfiedLinkError: no opencv_java401 in java.library.path at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1864)

So when i search for opencv_java401.dll lib, there exist only libopencv_java401.dll.

As i saw in the Windows package from OpenCV, there is a Java folder in the build folder, and that does include the .jar file and an /x64 folder, however, now when i built it does not exists.

OpenCV 4.01 face module for Java

Hello, I am trying to build OpenCV from source to .jar, since I need face module. I followed this tutorial https://medium.freecodecamp.org/facial-recognition-using-opencv-in-java-92fa40c22f62

Installed ant,Cmake and MinGW, setted Cmake configurations and this is my Cmake log:

------------------------------------------------------------

Could NOT find PythonInterp (missing: PYTHON_EXECUTABLE) (Required is at least version "3.2")
AVX_512F is not supported by C++ compiler
AVX512_SKX is not supported by C++ compiler
Dispatch optimization AVX512_SKX is not available, skipped
libjpeg-turbo: VERSION = 1.5.3, BUILD = opencv-4.0.1-libjpeg-turbo
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.
Found apache ant: D:/programi/apache-ant-1.10.5/bin/ant.bat (1.10.5)
VTK is not found. Please set -DVTK_DIR in CMake to VTK build directory, or to VTK install subdirectory with VTKConfig.cmake file
OpenCV Python: during development append to PYTHONPATH: D:/programi/opencv/buildSimple/python_loader
Caffe:   NO
Protobuf:   NO
Glog:   NO
freetype2:   NO
harfbuzz:    NO
Module opencv_ovis disabled because OGRE3D was not found
No preference for use of exported gflags CMake configuration set, and no hints for include/library directories provided. Defaulting to preferring an installed/exported gflags CMake configuration if available.
Failed to find installed gflags CMake configuration, searching for gflags build directories exported with CMake.
Failed to find gflags - Failed to find an installed/exported CMake configuration for gflags, will perform search for installed gflags components.
Failed to find gflags - Could not find gflags include directory, set GFLAGS_INCLUDE_DIR to directory containing gflags/gflags.h
Failed to find glog - Could not find glog include directory, set GLOG_INCLUDE_DIR to directory containing glog/logging.h
Module opencv_sfm disabled because the following dependencies are not found: Eigen Glog/Gflags
Excluding from source files list: <BUILD>/modules/dnn/layers/layers_common.avx512_skx.cpp

General configuration for OpenCV 4.0.1 =====================================
  Version control:               unknown

  Extra modules:
    Location (extra):            D:/programi/opencv/opencv_contrib-4.0.1/modules
    Version control (extra):     unknown

  Platform:
    Timestamp:                   2019-03-17T17:41:53Z
    Host:                        Windows 10.0.17134 AMD64
    CMake:                       3.14.0
    CMake generator:             MinGW Makefiles
    CMake build tool:            D:/programi/minGW/mingw64/bin/mingw32-make.exe
    Configuration:               Release

  CPU/HW features:
    Baseline:                    SSE SSE2 SSE3
      requested:                 SSE3
    Dispatched code generation:  SSE4_1 SSE4_2 FP16 AVX AVX2
      requested:                 SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX
      SSE4_1 (5 files):          + SSSE3 SSE4_1
      SSE4_2 (1 files):          + SSSE3 SSE4_1 POPCNT SSE4_2
      FP16 (0 files):            + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
      AVX (4 files):             + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
      AVX2 (11 files):           + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2

  C/C++:
    Built as dynamic libs?:      NO
    C++ Compiler:                D:/programi/minGW/mingw64/bin/g++.exe  (ver 8.1.0)
    C++ flags (Release):         -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG  -DNDEBUG
    C++ flags (Debug):           -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -g  -O0 -DDEBUG -D_DEBUG
    C Compiler:                  D:/programi/minGW/mingw64/bin/gcc.exe
    C flags (Release):           -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-narrowing -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -O3 -DNDEBUG  -DNDEBUG
    C flags (Debug):             -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-narrowing -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -g  -O0 -DDEBUG -D_DEBUG
    Linker flags (Release):      -Wl,--gc-sections  
    Linker flags (Debug):        -Wl,--gc-sections  
    ccache:                      NO
    Precompiled headers:         YES
    Extra dependencies:          ade comctl32 gdi32 ole32 setupapi ws2_32 avifil32 avicap32 winmm msvfw32
    3rdparty dependencies:       libprotobuf zlib libjpeg-turbo libwebp libpng libtiff libjasper IlmImf quirc

  OpenCV modules:
    To be built:                 calib3d core dnn face features2d flann gapi highgui imgcodecs imgproc java java_bindings_generator ml objdetect photo stitching ts video videoio
    Disabled:                    aruco bgsegm bioinspired ccalib datasets dnn_objdetect dpm fuzzy hfs img_hash line_descriptor optflow phase_unwrapping plot python_bindings_generator reg rgbd saliency shape stereo structured_light superres surface_matching text tracking videostab world xfeatures2d ximgproc xobjdetect xphoto
    Disabled by dependency:      -
    Unavailable:                 cnn_3dobj cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev cvv freetype hdf js matlab ovis python2 python3 sfm viz
    Applications:                apps
    Documentation:               NO
    Non-free algorithms:         NO

  Windows RT support:            NO

  GUI: 
    Win32 UI:                    YES
    VTK support:                 NO

  Media I/O: 
    ZLib:                        build (ver 1.2.11)
    JPEG:                        build-libjpeg-turbo (ver 1.5.3-62)
    WEBP:                        build (ver encoder: 0x020e)
    PNG:                         build (ver 1.6.35)
    TIFF:                        build (ver 42 - 4.0.9)
    JPEG 2000:                   build (ver 1.900.1)
    OpenEXR:                     build (ver 1.7.1)
    HDR:                         YES
    SUNRASTER:                   YES
    PXM:                         YES
    PFM:                         YES

  Video I/O:
    DC1394:                      NO
    FFMPEG:                      YES (prebuilt binaries)
      avcodec:                   YES (ver 58.35.100)
      avformat:                  YES (ver 58.20.100)
      avutil:                    YES (ver 56.22.100)
      swscale:                   YES (ver 5.3.100)
      avresample:                YES (ver 4.0.0)
    GStreamer:                   NO
    DirectShow:                  YES

  Parallel framework:            none

  Trace:                         YES (built-in)

  Other third-party libraries:
    Lapack:                      NO
    Eigen:                       NO
    Custom HAL:                  NO
    Protobuf:                    build (3.5.1)

  OpenCL:                        YES (no extra features)
    Include path:                D:/programi/opencv/opencv-4.0.1/3rdparty/include/opencl/1.2
    Link libraries:              Dynamic load

  Python (for build):            C:/Program Files/Python/python.exe

  Java:                          
    ant:                         D:/programi/apache-ant-1.10.5/bin/ant.bat (ver 1.10.5)
    JNI:                         C:/Program Files/Java/jdk1.8.0_171/include C:/Program Files/Java/jdk1.8.0_171/include/win32 C:/Program Files/Java/jdk1.8.0_171/include
    Java wrappers:               YES
    Java tests:                  NO

  Install to:                    D:/programi/opencv/buildSimple/install

-----------------------------------------------------

So when i build it, i have opencv.jar and i connected it with java so can import FaceRecognizer. Problem occurs when i start program, i get this exception:

Caused by: java.lang.UnsatisfiedLinkError: no opencv_java401 in java.library.path at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1864)

So when i search for opencv_java401.dll lib, there exist only libopencv_java401.dll.

As i saw in the Windows package from OpenCV, there is a Java folder in the build folder, and that does include the .jar file and an /x64 folder, however, now when i built it does not exists.


Ok I tried to rename libopencv_java401.dll to opencv_java401.dll and i am still getting an exception Caused by: java.lang.UnsatisfiedLinkError: D:\programi\opencv\buildSimple\lib\opencv_java401.dll: Can't find dependent libraries. Even though that dll exists in this path.

I don't have opencv/buildSimple/install/ folder at all. Is there some build flag i need to check?