Good evening, I'm trying to build our Haskell binding to the OpenCV C++ library on OS X. The following commands should do the job:
git clone https://github.com/LumiGuide/haskell-opencv.git cd opencv nix-build Unfortunately it fails during the configure phase with: Setup: Cannot find the program 'gcc'. User-specified path 'g++' does not refer to an executable and the program is not on the system path. If I add gcc to the build dependencies of opencv/opencv.nix using: buildDepends = [ gcc ]; and invoke nix-build again I get a different error: Setup: Missing dependencies on foreign libraries: * Missing C libraries: stdc++, opencv_stitching, opencv_superres, opencv_videostab, opencv_aruco, opencv_bgsegm, opencv_bioinspired, opencv_ccalib, opencv_dpm, opencv_freetype, opencv_fuzzy, opencv_line_descriptor, opencv_optflow, opencv_reg, opencv_saliency, opencv_stereo, opencv_structured_light, opencv_phase_unwrapping, opencv_rgbd, opencv_surface_matching, opencv_tracking, opencv_datasets, opencv_text, opencv_face, opencv_plot, opencv_dnn, opencv_xfeatures2d, opencv_shape, opencv_video, opencv_ximgproc, opencv_calib3d, opencv_features2d, opencv_flann, opencv_xobjdetect, opencv_objdetect, opencv_ml, opencv_xphoto, opencv_highgui, opencv_videoio, opencv_imgcodecs, opencv_photo, opencv_imgproc, opencv_core This problem can usually be solved by installing the system packages that provide these libraries (you may need the "-dev" versions). If the libraries are already installed but in a non-standard location then you can use the flags --extra-include-dirs= and --extra-lib-dirs= to specify where they are. Any ideas how to get this working? Regards, Bas
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