🌈 New npm-opencv-build + opencv4nodejs refreshed fork.

[UrielCh]

Hi,

I have just done making my opencv4nodejs fork works.

UrielCh/opencv4nodejs

UrielCh/npm-opencv-build

Main changes:

• Tested and work and used on Debian/ Windows 10 / Raspberry pi / MacOs X (M1).
• Cache versioned builds files.
• Full Typescript.
• No more auto-build during npm install.
• The build-opencv (alias for install/install.js) must be call once to build everything ex: build-opencv --version 3.4.6 rebuild.
• Works on electron

[zcmgyu]

Thanks. I appreciate it if it could support Electron as well. Could you give me the point to make it work with ElectronJS?

[UrielCh]

I will support Electron and maybe global setup in the same time (npm -g) the changes are in the same file.

[zcmgyu]

@UrielCh Hi, I would like to join to contribute as well. Do you have any suggestions to do that? Thank you in advance. 🙇

[UrielCh]

Electron build pass.

If you want to add some more code samples, you are well come.

If I found time I will release a sample electron project that uses the webcam and apply a Yolo CNN. dans display data on the side.
then the other one that read QR code, so I can attach actions to each QR-code, I would like to play some music based on a QR-Code, I will print some QR-Code for my kids, so they will be able to play music by themselves.

See opencv-electron

[zcmgyu]

@UrielCh Thanks. I've just viewed your opencv-electron repo on mobile. It is running on electron version 1.8.4. This electron version worked fine with legacy opencv4nodejs, when upgrading it to the latest electron, something went wrong. I will deep dive into this repo and give you feedback. Thank you for your contribution.

[UrielCh]

My first deep dive is done, please continue this discussion here: UrielCh#4

[UrielCh]

Version 6.0.10 is out Electron v16 works.

[zcmgyu]

Great fork 🔥🔥🔥

Hope you guys carry on this library on this forked repository.
https://github.com/UrielCh/opencv4nodejs

[UrielCh]

Hi,
Great news for those people that do not want to build their OpenCV:
I published @u4/opencv4nodejs V 6.2.4 today,

This version autodetects the common setup path for Brew on Mac, Chocolatey on Windows, and Apt on Linux.

• Windows:

choco install opencv

• Mac:

brew install opencv

• debian:

apt -y install libopencv-contrib-dev libopencv-dev

just define environment variable: OPENCV4NODEJS_DISABLE_AUTOBUILD=1

And your prebuild OpenCV will be used.

You may need to call:
npx build-opencv rebuild
or
npx build-opencv --nobuild rebuild (if you do not define OPENCV4NODEJS_DISABLE_AUTOBUILD variable)

[baditaflorin]

@UrielCh when trying this on macos Ventura 13.1 I get

^
/Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk/usr/include/sys/cdefs.h:215:48: note: expanded from macro '__deprecated_msg'
        #define __deprecated_msg(_msg) __attribute__((__deprecated__(_msg)))
                                                      ^
[ 39%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/softfloat.cpp.o
/Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/opencv/modules/core/src/persistence_xml.cpp:211:25: warning: 'sprintf' is deprecated: This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead. [-Wdeprecated-declarations]
                        sprintf( data, "#x%02x", (uchar)c );
                        ^
/Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk/usr/include/stdio.h:188:1: note: 'sprintf' has been explicitly marked deprecated here
__deprecated_msg("This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead.")
^
/Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk/usr/include/sys/cdefs.h:215:48: note: expanded from macro '__deprecated_msg'
        #define __deprecated_msg(_msg) __attribute__((__deprecated__(_msg)))
                                                      ^
/Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/opencv/modules/core/src/persistence_xml.cpp:312:13: warning: 'sprintf' is deprecated: This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead. [-Wdeprecated-declarations]
            sprintf( ptr, "<!-- %s -->", comment );
            ^
/Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk/usr/include/stdio.h:188:1: note: 'sprintf' has been explicitly marked deprecated here
__deprecated_msg("This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead.")
^
/Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk/usr/include/sys/cdefs.h:215:48: note: expanded from macro '__deprecated_msg'
        #define __deprecated_msg(_msg) __attribute__((__deprecated__(_msg)))
                                                      ^
/Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/opencv/modules/core/src/persistence_xml.cpp:347:13: warning: 'sprintf' is deprecated: This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead. [-Wdeprecated-declarations]
            sprintf( ptr, "-->" );
            ^
/Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk/usr/include/stdio.h:188:1: note: 'sprintf' has been explicitly marked deprecated here
__deprecated_msg("This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead.")
^
/Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk/usr/include/sys/cdefs.h:215:48: note: expanded from macro '__deprecated_msg'
        #define __deprecated_msg(_msg) __attribute__((__deprecated__(_msg)))
                                                      ^
[ 39%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/split.dispatch.cpp.o
[ 39%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/stat.dispatch.cpp.o
3 warnings generated.
[ 39%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/stat_c.cpp.o
[ 39%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/stl.cpp.o
/Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/opencv/modules/core/src/persistence_yml.cpp:43:13: warning: 'sprintf' is deprecated: This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead. [-Wdeprecated-declarations]
            sprintf(buf, "!!binary |");
            ^
/Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk/usr/include/stdio.h:188:1: note: 'sprintf' has been explicitly marked deprecated here
__deprecated_msg("This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead.")
^
/Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk/usr/include/sys/cdefs.h:215:48: note: expanded from macro '__deprecated_msg'
        #define __deprecated_msg(_msg) __attribute__((__deprecated__(_msg)))
                                                      ^
/Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/opencv/modules/core/src/persistence_yml.cpp:52:17: warning: 'sprintf' is deprecated: This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead. [-Wdeprecated-declarations]
                sprintf( buf, "!!%s %c", type_name, c );
                ^
/Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk/usr/include/stdio.h:188:1: note: 'sprintf' has been explicitly marked deprecated here
__deprecated_msg("This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead.")
^
/Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk/usr/include/sys/cdefs.h:215:48: note: expanded from macro '__deprecated_msg'
        #define __deprecated_msg(_msg) __attribute__((__deprecated__(_msg)))
                                                      ^
/Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/opencv/modules/core/src/persistence_yml.cpp:62:13: warning: 'sprintf' is deprecated: This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead. [-Wdeprecated-declarations]
            sprintf( buf, "!!%s", type_name );
            ^
/Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk/usr/include/stdio.h:188:1: note: 'sprintf' has been explicitly marked deprecated here
__deprecated_msg("This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead.")
^
/Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk/usr/include/sys/cdefs.h:215:48: note: expanded from macro '__deprecated_msg'
        #define __deprecated_msg(_msg) __attribute__((__deprecated__(_msg)))
                                                      ^
/Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/opencv/modules/core/src/persistence_yml.cpp:155:25: warning: 'sprintf' is deprecated: This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead. [-Wdeprecated-declarations]
                        sprintf( data, "x%02x", c );
                        ^
/Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk/usr/include/stdio.h:188:1: note: 'sprintf' has been explicitly marked deprecated here
__deprecated_msg("This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead.")
^
/Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk/usr/include/sys/cdefs.h:215:48: note: expanded from macro '__deprecated_msg'
        #define __deprecated_msg(_msg) __attribute__((__deprecated__(_msg)))
                                                      ^
4 warnings generated.
[ 39%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/sum.dispatch.cpp.o
[ 39%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/system.cpp.o
[ 39%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/tables.cpp.o
[ 39%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/trace.cpp.o
[ 39%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/types.cpp.o
[ 39%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/umatrix.cpp.o
[ 39%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/utils/datafile.cpp.o
9 warnings generated.
[ 40%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/utils/filesystem.cpp.o
3 warnings generated.
[ 40%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/utils/logtagconfigparser.cpp.o
[ 40%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/utils/logtagmanager.cpp.o
/Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/opencv/modules/core/src/system.cpp:1381:5: warning: 'sprintf' is deprecated: This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead. [-Wdeprecated-declarations]
    sprintf(buf, "Unknown %s code %d", status >= 0 ? "status":"error", status);
    ^
/Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk/usr/include/stdio.h:188:1: note: 'sprintf' has been explicitly marked deprecated here
__deprecated_msg("This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead.")
^
/Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk/usr/include/sys/cdefs.h:215:48: note: expanded from macro '__deprecated_msg'
        #define __deprecated_msg(_msg) __attribute__((__deprecated__(_msg)))
                                                      ^
[ 40%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/utils/samples.cpp.o
[ 40%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/opencl_kernels_core.cpp.o
[ 40%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/va_intel.cpp.o
1 warning generated.
[ 40%] Linking CXX shared library ../../lib/libopencv_core.dylib
[ 40%] Built target opencv_core
make: *** [all] Error 2
ERR! build Compilation failed, previous calls:
ERR! build rimraf /Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/build /Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/opencv /Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/opencv_contrib
ERR! build mkdir -p /Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/build
ERR! build cd /Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea
ERR! build git clone --quiet -b 4.6.0 --single-branch --depth 1 --progress https://github.com/opencv/opencv_contrib.git /Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/opencv_contrib
ERR! build git clone --quiet -b 4.6.0 --single-branch --depth 1 --progress https://github.com/opencv/opencv.git /Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/opencv
ERR! build export OPENCV_BIN_DIR=/Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/build/bin
ERR! build export OPENCV_INCLUDE_DIR=
ERR! build export OPENCV_LIB_DIR=/Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/build/lib
ERR! build cd /Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/build
ERR! build cmake /Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/opencv -DCMAKE_INSTALL_PREFIX=/Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/build -DCMAKE_BUILD_TYPE=Release -DCMAKE_BUILD_TYPES=Release -DBUILD_EXAMPLES=OFF -DBUILD_DOCS=OFF -DBUILD_TESTS=OFF -DBUILD_opencv_dnn=ON -DENABLE_FAST_MATH=ON -DBUILD_PERF_TESTS=OFF -DBUILD_JAVA=OFF -DBUILD_ZLIB=OFF -DCUDA_NVCC_FLAGS=--expt-relaxed-constexpr -DWITH_VTK=OFF -DOPENCV_ENABLE_NONFREE=ON -DOPENCV_EXTRA_MODULES_PATH=/Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/opencv_contrib/modules -DBUILD_opencv_apps=OFF -DBUILD_opencv_aruco=OFF -DBUILD_opencv_bgsegm=OFF -DBUILD_opencv_bindings_generator=OFF -DBUILD_opencv_bioinspired=OFF -DBUILD_opencv_calib3d=ON -DBUILD_opencv_ccalib=OFF -DBUILD_opencv_core=ON -DBUILD_opencv_datasets=OFF -DBUILD_opencv_dnn=ON -DBUILD_opencv_dnn_objdetect=OFF -DBUILD_opencv_dpm=OFF -DBUILD_opencv_face=ON -DBUILD_opencv_features2d=ON -DBUILD_opencv_flann=ON -DBUILD_opencv_fuzzy=OFF -DBUILD_opencv_gapi=ON -DBUILD_opencv_hfs=OFF -DBUILD_opencv_highgui=ON -DBUILD_opencv_img_hash=ON -DBUILD_opencv_imgcodecs=ON -DBUILD_opencv_imgproc=ON -DBUILD_opencv_java_bindings_generator=OFF -DBUILD_opencv_js=OFF -DBUILD_opencv_line_descriptor=OFF -DBUILD_opencv_ml=ON -DBUILD_opencv_objc_bindings_generator=OFF -DBUILD_opencv_objdetect=ON -DBUILD_opencv_optflow=OFF -DBUILD_opencv_phase_unwrapping=OFF -DBUILD_opencv_photo=ON -DBUILD_opencv_python3=OFF -DBUILD_opencv_python_bindings_generator=OFF -DBUILD_opencv_python_tests=ON -DBUILD_opencv_reg=OFF -DBUILD_opencv_rgbd=OFF -DBUILD_opencv_saliency=OFF -DBUILD_opencv_shape=OFF -DBUILD_opencv_stereo=OFF -DBUILD_opencv_stitching=OFF -DBUILD_opencv_structured_light=OFF -DBUILD_opencv_superres=OFF -DBUILD_opencv_surface_matching=OFF -DBUILD_opencv_text=ON -DBUILD_opencv_tracking=ON -DBUILD_opencv_ts=OFF -DBUILD_opencv_video=ON -DBUILD_opencv_videoio=ON -DBUILD_opencv_videostab=ON -DBUILD_opencv_wechat_qrcode=OFF -DBUILD_opencv_world=OFF -DBUILD_opencv_xfeatures2d=ON -DBUILD_opencv_ximgproc=ON -DBUILD_opencv_xobjdetect=OFF -DBUILD_opencv_xphoto=OFF
ERR! build cd /Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/build
ERR! build make install -j10
ERR! install running: make install -j10
ERR! install in /Users/florin/Documents/GITHUB_PROJECTS/scrape_hub/src/node/node_modules/@u4/opencv-build/dist/opencv-4.6.0-8b1ea/build exited with code 2 (for more info, set '--loglevel silly')