Build OpenCV 3.4 for python 3.6 on ubuntu
Lately, I have been contributing to opencv 3.4 branch. I am facing trouble building 3.4 branch locally, 4.2 is getting build successfully. Here is the status of my branches when I checkout master branch -
* master
remotes/origin/2.4
remotes/origin/3.4
remotes/origin/HEAD -> origin/master
remotes/origin/master
I am using following command to cmake-
cd ~/opencv
mkdir build
cd build
cmake -D CMAKE_BUILD_TYPE=Release \
-D CMAKE_INSTALL_PREFIX=/usr/local \
-D INSTALL_PYTHON_EXAMPLES=ON \
-D INSTALL_C_EXAMPLES=OFF \
-D OPENCV_ENABLE_NONFREE=ON \
-D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib/modules \
-D PYTHON_EXECUTABLE=~/.virtualenvs/cv/bin/python \
-D BUILD_EXAMPLES=ON ..
when I try to build it on master branch it is successfully building but version 4.2.0 .I want to build 3.4 to test my changes made on child branch of 3.4 locally. I am getting the following error -
-
- Detected processor: x86_64
-- Looking for ccache - not found
-- Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found suitable version "1.2.11", minimum required is "1.2.3")
-- Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found version "1.2.11")
-- Looking for linux/videodev.h
-- Looking for linux/videodev.h - found
-- Looking for linux/videodev2.h
-- Looking for linux/videodev2.h - found
-- Looking for sys/videoio.h
-- Looking for sys/videoio.h - not found
-- found Intel IPP (ICV version): 2020.0.0 [2020.0.0 Gold]
-- at: /home/ashish/opencv/build/3rdparty/ippicv/ippicv_lnx/icv
-- found Intel IPP Integration Wrappers sources: 2020.0.0
-- at: /home/ashish/opencv/build/3rdparty/ippicv/ippicv_lnx/iw
-- Could not find OpenBLAS include. Turning OpenBLAS_FOUND off
-- Could not find OpenBLAS lib. Turning OpenBLAS_FOUND off
-- Could NOT find Atlas (missing: Atlas_CLAPACK_INCLUDE_DIR)
-- A library with BLAS API found.
-- A library with LAPACK API found.
-- Could NOT find JNI (missing: JAVA_AWT_LIBRARY JAVA_JVM_LIBRARY JAVA_INCLUDE_PATH JAVA_INCLUDE_PATH2 JAVA_AWT_INCLUDE_PATH)
-- Could NOT find Pylint (missing: PYLINT_EXECUTABLE)
-- Could NOT find Flake8 (missing: FLAKE8_EXECUTABLE)
-- VTK is not found. Please set -DVTK_DIR in CMake to VTK build directory, or to VTK install subdirectory with VTKConfig.cmake file
calib3d
core
> cudaarithm
> cudabgsegm
> cudacodec
> cudafeatures2d
> cudafilters
> cudaimgproc
> cudalegacy
> cudaobjdetect
> cudaoptflow
> cudastereo
> cudawarping
> cudev
dnn
features2d
flann
highgui
imgcodecs
imgproc
java
js
ml
objdetect
photo
python
> shape
stitching
> superres
ts
video
videoio
> videostab
> viz
world
aruco
bgsegm
bioinspired
ccalib
cnn_3dobj
> cudaarithm
> cudabgsegm
> cudacodec
> cudafeatures2d
> cudafilters
> cudaimgproc
> cudalegacy
> cudaobjdetect
> cudaoptflow
> cudastereo
> cudawarping
> cudev
cvv
datasets
dnn_objdetect
dnn_superres
dpm
face
freetype
fuzzy
hdf
hfs
img_hash
line_descriptor
matlab
optflow
ovis
phase_unwrapping
plot
quality
rapid
reg
rgbd
saliency
sfm
> shape
stereo
structured_light
> superres
surface_matching
text
tracking
> videostab
> viz
xfeatures2d
ximgproc
xobjdetect
xphoto
CMake Error at cmake/OpenCVModule.cmake:353 (message):
Duplicated modules NAMES has been found
Call Stack (most recent call first):
cmake/OpenCVModule.cmake:371 (_assert_uniqueness)
modules/CMakeLists.txt:7 (ocv_glob_modules)
-- Configuring incomplete, errors occurred!
See also "/home/ashish/opencv/build/CMakeFiles/CMakeOutput.log".
See also "/home/ashish/opencv/build/CMakeFiles ...