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Building openCV fails

See original GitHub issue

Hi,

make system_dependencies
make opencv_build

as stated in https://github.com/kivy-garden/garden.zbarcam/blob/develop/OpenCV.md, stops with the following errors :

error: ‘AVFMT_RAWPICTURE’ was not declared in this scope
     if (oc->oformat->flags & AVFMT_RAWPICTURE) {
error: ‘AVFMT_RAWPICTURE’ was not declared in this scope
         if( (oc->oformat->flags & AVFMT_RAWPICTURE) == 0 )
error: ‘AVFMT_RAWPICTURE’ was not declared in this scope
     if (!(oc->oformat->flags & AVFMT_RAWPICTURE)) {
error: ‘CODEC_FLAG_GLOBAL_HEADER’ was not declared in this scope
             c->flags |= CODEC_FLAG_GLOBAL_HEADER;

I managed to have it built by changing the Makefile from :

$(OPENCV_BUILD):
	curl --location https://github.com/opencv/opencv/archive/$(OPENCV_VERSION).tar.gz \
		--progress-bar --output $(OPENCV_BASENAME).tar.gz
	tar -xf $(OPENCV_BASENAME).tar.gz
	cmake \
		-D BUILD_DOCS=OFF -D BUILD_PACKAGE=OFF -D BUILD_PERF_TESTS=OFF \
		-D BUILD_TESTS=OFF -D BUILD_opencv_apps=OFF \
		-D BUILD_opencv_nonfree=OFF -D BUILD_opencv_stitching=OFF \
		-D BUILD_opencv_superres=OFF -D BUILD_opencv_ts=OFF \
		-D BUILD_WITH_DEBUG_INFO=OFF -D WITH_1394=OFF -D WITH_CUDA=OFF \
		-D WITH_CUFFT=OFF -D WITH_GIGEAPI=OFF -D WITH_JASPER=OFF \
		-D WITH_OPENEXR=OFF -D WITH_PVAPI=OFF -D WITH_GTK=OFF \
		-D BUILD_opencv_python=ON -B$(OPENCV_BASENAME)/build -H$(OPENCV_BASENAME)
cmake --build $(OPENCV_BASENAME)/build -- -j$(NPROC)

To :

$(OPENCV_BUILD):
        curl --location https://github.com/opencv/opencv/archive/$(OPENCV_VERSION).tar.gz \
                --progress-bar --output $(OPENCV_BASENAME).tar.gz
        tar -xf $(OPENCV_BASENAME).tar.gz
        sed -i '1s/^/#define AV_CODEC_FLAG_GLOBAL_HEADER (1 << 22)\n#define CODEC_FLAG_GLOBAL_HEADER AV_CODEC_FLAG_GLOBAL_HEADER\n#define AVFMT_RAWPICTURE 0x0020\n/' "$(OPENCV_BASENAME)/modules/highgui/src/cap_ffmpeg_impl.hpp"
        cmake \
                -D BUILD_DOCS=OFF -D BUILD_PACKAGE=OFF -D BUILD_PERF_TESTS=OFF \
                -D BUILD_TESTS=OFF -D BUILD_opencv_apps=OFF \
                -D BUILD_opencv_nonfree=OFF -D BUILD_opencv_stitching=OFF \
                -D BUILD_opencv_superres=OFF -D BUILD_opencv_ts=OFF \
                -D BUILD_WITH_DEBUG_INFO=OFF -D WITH_1394=OFF -D WITH_CUDA=OFF \
                -D WITH_CUFFT=OFF -D WITH_GIGEAPI=OFF -D WITH_JASPER=OFF \
                -D WITH_OPENEXR=OFF -D WITH_PVAPI=OFF -D WITH_GTK=OFF \
                -D BUILD_opencv_python=ON -B$(OPENCV_BASENAME)/build -H$(OPENCV_BASENAME)
        cmake --build $(OPENCV_BASENAME)/build -- -j$(NPROC)

If it can help

Issue Analytics

State:
Created 5 years ago
Reactions:1
Comments:6 (1 by maintainers)

Top GitHub Comments

1reaction

darosiorcommented, Oct 20, 2018

Hi, another thing to report I cloned the repo and after reproducing all the steps I could not launch the demo application, with the following error :

opencv - ImportError: numpy.core.multiarray failed to import

A little search made me do

pip install -U numpy

to have it work. Maybe the numpy version in requirements is too low ?

0reactions

AndreMirascommented, Sep 10, 2019

Closing as we just moved to the new builtin opencv module which is available under PyPI 🎉 Refs https://github.com/kivy-garden/zbarcam/issues/23 Thanks again for the help 🍻