The opencv package contains graphics libraries mainly aimed at real-time computer vision.
Development versions of BLFS may not build or run some packages properly if dependencies have been updated since the most recent stable versions of the book.
Download (HTTP): https://github.com/opencv/opencv/archive/4.5.5/opencv-4.5.5.tar.gz
Download MD5 sum: a9782f01883fcf51451a183d05bda33d
Download size: 86 MB
Estimated disk space required: 773 MB
Estimated build time: 7.1 SBU (using parallelism=4)
Optional additional modules: https://github.com/opencv/opencv_contrib/archive/4.5.5/opencv_contrib-4.5.5.tar.gz
One additional file that starts with "ippicv" (integrated performance primitives) will be automatically downloaded during the cmake portion of the build procedure. This download is specific to the system architecture.
FFmpeg-4.4.1, gst-plugins-base-1.20.2, GTK+-3.24.33, JasPer-3.0.3, libexif-0.6.24, libjpeg-turbo-2.1.3, libpng-1.6.37, libtiff-4.3.0, libwebp-1.2.2, v4l-utils-1.22.1, and xine-lib-1.2.12
apache-ant-1.10.12, Doxygen-1.9.4, Java-18.0.1, Python-2.7.18, blas, Cuda, Eigen, OpenEXR, GDAL, lapack, libdc1394, NumPy, Threading Building Blocks (TBB), and VTK - The Visualization Toolkit,
User Notes: https://wiki.linuxfromscratch.org/blfs/wiki/opencv
If needed, unpack the additional modules package:
tar xf ../opencv_contrib-4.5.5.tar.gz
Install opencv by running the following commands:
mkdir build && cd build && cmake -DCMAKE_INSTALL_PREFIX=/usr \ -DCMAKE_BUILD_TYPE=Release \ -DENABLE_CXX11=ON \ -DBUILD_PERF_TESTS=OFF \ -DWITH_XINE=ON \ -DBUILD_TESTS=OFF \ -DENABLE_PRECOMPILED_HEADERS=OFF \ -DCMAKE_SKIP_RPATH=ON \ -DBUILD_WITH_DEBUG_INFO=OFF \ -Wno-dev .. && make
The package does not come with an operable test suite.
Now, as the root
user:
make install
-DWITH_XINE=ON
: This option
instructs the make procedure to use xine-lib-1.2.12.
-DENABLE_PRECOMPILED_HEADERS=OFF
:
This option is needed for compatibiiity with gcc-6.1 and later.
-DOPENCV_EXTRA_MODULES_PATH=../opencv_contrib-4.5.5/modules
:
instructs the build system to build additional modules.