Install Gocv on MAC

1. Go to the correct path then run the following code

jimmy@jimmys-MacBook-Pro ~ % cd $GOPATH/src/ gocv % go run ./cmd/version/main.gogocv version: 0.24.0opencv lib version: 4.4.0

2. Fix the Package opencv4 was not found issue


jimmy@jimmys-MacBook-Pro x % go run ./gocv/cmd/version/main.go# pkg-config --cflags  -- opencv4Package opencv4 was not found in the pkg-config search path.Perhaps you should add the directory containing `opencv4.pc'to the PKG_CONFIG_PATH environment variableNo package 'opencv4' foundpkg-config: exit status 1

How to fix: find the opencv4.pc file

find / -name opencv4.pc/usr/local/Cellar/opencv/4.4.0_2/lib/pkgconfig/opencv4.pc
vi ~/.zshrc
export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:/usr/local/Cellar/opencv/4.4.0_2/lib/pkgconfig"
source ~/.zshrc
cd $GOPATH/src/ gocv % go run ./cmd/version/main.gogocv version: 0.24.0opencv lib version: 4.4.0

See yourself from gocv

package mainimport (
func main() {
webcam, _ := gocv.VideoCaptureDevice(0)
window := gocv.NewWindow("Hello")
img := gocv.NewMat()
for {
/usr/local/go/pkg/tool/darwin_amd64/link: running clang++ failed: exit status 1ld: warning: directory not found for option '-L/usr/local/Cellar/opencv/4.4.0_2/lib'ld: library not found for -lopencv_freetypeclang: error: linker command failed with exit code 1 (use -v to see invocation)
export CGO_CPPFLAGS="-I/usr/local/Cellar/opencv/4.5.0_2/include"
export CGO_LDFLAGS="-L/usr/local/Cellar/opencv/4.5.0_2/lib -lopencv_stitching -lopencv_superres -lopencv_videostab -lopencv_aruco -lopencv_bgsegm -lopencv_bioinspired -lopencv_ccalib -lopencv_dnn_objdetect -lopencv_dpm -lopencv_face -lopencv_photo -lopencv_fuzzy -lopencv_hfs -lopencv_img_hash -lopencv_line_descriptor -lopencv_optflow -lopencv_reg -lopencv_rgbd -lopencv_saliency -lopencv_stereo -lopencv_structured_light -lopencv_phase_unwrapping -lopencv_surface_matching -lopencv_tracking -lopencv_datasets -lopencv_dnn -lopencv_plot -lopencv_xfeatures2d -lopencv_shape -lopencv_video -lopencv_ml -lopencv_ximgproc -lopencv_calib3d -lopencv_features2d -lopencv_highgui -lopencv_videoio -lopencv_flann -lopencv_xobjdetect -lopencv_imgcodecs -lopencv_objdetect -lopencv_xphoto -lopencv_imgproc -lopencv_core"





Data Scientist/MLE/SWE @takemobi

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Jimmy Shen

Jimmy Shen

Data Scientist/MLE/SWE @takemobi

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