How to modify link behavior according to enabled features?

[czf0613]

I am using OpenCV to perform some basic image processing task.
I only need the imgcodec, imgproc functions, so I set the crate feature like this:

[dependencies]
opencv = { version = "0.94", default-features = false, features = [
    "imgcodecs",
    "imgproc",
    "clang-runtime",
] }

But the linker always link all the libs provided by OpenCV, it makes me really hard to distribute my app.

/opt/homebrew/opt/opencv/lib/libopencv_gapi.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_stitching.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_alphamat.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_aruco.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_bgsegm.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_bioinspired.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_ccalib.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_dnn_objdetect.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_dnn_superres.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_dpm.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_face.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_freetype.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_fuzzy.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_hfs.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_img_hash.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_intensity_transform.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_line_descriptor.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_mcc.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_quality.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_rapid.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_reg.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_rgbd.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_saliency.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_sfm.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_signal.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_stereo.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_structured_light.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_phase_unwrapping.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_superres.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_optflow.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_surface_matching.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_tracking.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_highgui.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_datasets.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_text.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_plot.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_videostab.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_videoio.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_viz.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_wechat_qrcode.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_xfeatures2d.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_shape.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_ml.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_ximgproc.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_video.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_xobjdetect.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_objdetect.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_calib3d.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_imgcodecs.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_features2d.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_dnn.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_flann.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_xphoto.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_photo.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_imgproc.411.dylib (compatibility version 411.0.0, current version 4.11.0)
	/opt/homebrew/opt/opencv/lib/libopencv_core.411.dylib (compatibility version 411.0.0, current version 4.11.0)

I just need libopencv_core, libopencv_imgproc and libopencv_imgcodec. I don't need all of them.

[twistedfall]

Check the following section of the readme: https://github.com/twistedfall/opencv-rust?tab=readme-ov-file#environment-variables You're looking to use OPENCV_LINK_LIBS environment variable to override the detected libs to link.