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Opencv4.0をubuntu18.04にインストールするまで

Opencv4.0をubuntu18.04にインストールするまで

以下を参考にしました
https://www.trifields.jp/how-to-install-opencv-on-ubuntu-2742

シェルスクリプトを一部、以下のように変更しました。
具体的には
cmake \
の後の3行目
-DCMAKE_INSTALL_PREFIX

-DOPENCV_GENERATE_PKGCONFIG
のパラメータを変更しました。
CMAKE_INSTALL_PREFIXはopencvをインストールフォルダを指定。
-DOPENCV_GENERATE_PKGCONFIGはpkg-configを使うかどうか(.pcファイルを生成するかどうか)

opencv4.0_build-ubuntu18.04.sh
#!/bin/bash

SOURCE_DIR="echo $(cd $(dirname $0);pwd)"
BUILD_DIR=${SOURCE_DIR}/build
GENERATOR_NAME="Unix Makefiles"

mkdir build
cd build

cmake \
-G "${GENERATOR_NAME}" \
--build ${BUILD_DIR} \
-DCMAKE_INSTALL_PREFIX=/usr/local/ \
-DOPENCV_GENERATE_PKGCONFIG=ON \
-D BUILD_CUDA_STUBS=OFF \
-D BUILD_DOCS=OFF \
-D BUILD_EXAMPLES=OFF \
-D BUILD_JASPER=OFF \
-D BUILD_JPEG=OFF \
-D BUILD_OPENEXR=OFF \
-D BUILD_PACKAGE=ON \
-D BUILD_PERF_TESTS=OFF \
-D BUILD_PNG=OFF \
-D BUILD_SHARED_LIBS=ON \
-D BUILD_TBB=OFF \
-D BUILD_TESTS=OFF \
-D BUILD_TIFF=OFF \
-D BUILD_WITH_DEBUG_INFO=ON \
-D BUILD_ZLIB=OFF \
-D BUILD_WEBP=OFF \
-D BUILD_opencv_apps=ON \
-D BUILD_opencv_calib3d=ON \
-D BUILD_opencv_core=ON \
-D BUILD_opencv_cudaarithm=OFF \
-D BUILD_opencv_cudabgsegm=OFF \
-D BUILD_opencv_cudacodec=OFF \
-D BUILD_opencv_cudafeatures2d=OFF \
-D BUILD_opencv_cudafilters=OFF \
-D BUILD_opencv_cudaimgproc=OFF \
-D BUILD_opencv_cudalegacy=OFF \
-D BUILD_opencv_cudaobjdetect=OFF \
-D BUILD_opencv_cudaoptflow=OFF \
-D BUILD_opencv_cudastereo=OFF \
-D BUILD_opencv_cudawarping=OFF \
-D BUILD_opencv_cudev=OFF \
-D BUILD_opencv_features2d=ON \
-D BUILD_opencv_flann=ON \
-D BUILD_opencv_highgui=ON \
-D BUILD_opencv_imgcodecs=ON \
-D BUILD_opencv_imgproc=ON \
-D BUILD_opencv_java=OFF \
-D BUILD_opencv_ml=ON \
-D BUILD_opencv_objdetect=ON \
-D BUILD_opencv_photo=ON \
-D BUILD_opencv_python2=OFF \
-D BUILD_opencv_python3=ON \
-D BUILD_opencv_shape=ON \
-D BUILD_opencv_stitching=ON \
-D BUILD_opencv_superres=ON \
-D BUILD_opencv_ts=ON \
-D BUILD_opencv_video=ON \
-D BUILD_opencv_videoio=ON \
-D BUILD_opencv_videostab=ON \
-D BUILD_opencv_viz=OFF \
-D BUILD_opencv_world=OFF \
-D CMAKE_BUILD_TYPE=RELEASE \
-D WITH_1394=ON \
-D WITH_CUBLAS=OFF \
-D WITH_CUDA=OFF \
-D WITH_CUFFT=OFF \
-D WITH_EIGEN=ON \
-D WITH_FFMPEG=OFF \
-D WITH_GDAL=OFF \
-D WITH_GPHOTO2=OFF \
-D WITH_GIGEAPI=ON \
-D WITH_GSTREAMER=ON \
-D WITH_GTK=ON \
-D WITH_INTELPERC=OFF \
-D WITH_IPP=ON \
-D WITH_IPP_A=OFF \
-D WITH_JASPER=OFF \
-D WITH_JPEG=ON \
-D WITH_LIBV4L=OFF \
-D WITH_OPENCL=ON \
-D WITH_OPENCLAMDBLAS=OFF \
-D WITH_OPENCLAMDFFT=OFF \
-D WITH_OPENCL_SVM=OFF \
-D WITH_OPENEXR=OFF \
-D WITH_OPENGL=ON \
-D WITH_OPENMP=OFF \
-D WITH_OPENNI=OFF \
-D WITH_PNG=ON \
-D WITH_PTHREADS_PF=OFF \
-D WITH_PVAPI=ON \
-D WITH_QT=OFF \
-D WITH_TBB=ON \
-D WITH_TIFF=OFF \
-D WITH_UNICAP=OFF \
-D WITH_V4L=OFF \
-D WITH_VTK=OFF \
-D WITH_WEBP=OFF \
-D WITH_XIMEA=OFF \
-D WITH_XINE=OFF \
${SOURCE_DIR}

次回は、pkg-config を使って、
g++ sample.cpp `pkg-config --cflags --libs opencv4` -o sampleB
のような形でコンパイルできるようになるまでの設定をまとめます。

以下、参考URL

https://www.trifields.jp/how-to-install-opencv-on-ubuntu-2742
https://ja.stackoverflow.com/questions/53767/macos-c%E3%81%A7opencv%E3%81%8C%E5%AE%9F%E8%A1%8C%E3%81%A7%E3%81%8D%E3%81%AA%E3%81%84

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Help us understand the problem. What are the problem?