Ubuntu18.04+OpenCV4.0的编译安装
目录结构
opencv-4.0.1
|_____opencv_contrib-4.0.1/modules
|_____build
编译命令
mkdir build
cd build
sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev libv4l-dev
sudo apt-get install libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev
sudo apt-get install libeigen3-dev libgoogle-glog-dev libgflags-dev
#(sudo apt-get install python-dev python-numpy)
#it is better to configure your own python library for this testing,
#as in below cmake command
cmake -DCMAKE_INSTALL_PREFIX=/opt/opencv400 -DCMAKE_BUILD_TYPE=Release \
-DOPENCV_EXTRA_MODULES_PATH=../opencv_contrib-4.0.1/modules \
-DPYTHON_EXECUTABLE=python3 \
-DPYTHON_INCLUDE_DIR=$(python3 -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())") \
-DPYTHON_LIBRARY=$(python3 -c "import distutils.sysconfig as sysconfig; print(sysconfig.get_config_var('LIBDIR'))") ..
make -j8
make install
说明
我这里是加了extra modules的,注意目录结构要和你的cmake命令中的EXTRA_MODULES_PATH目录对应。
库文件最好是先装上,不然会有很多报错。OpenCV-SFM模块还信赖eigen/glog/gflags,如果需要该模块的话这两个包也要装上。
在执行cmake ...命令前,build下面应该是空的,不然遗留下来的东西有可能冲突,也会报错。
-DCMAKE_INSTALL_PREFIX=你想要安装opencv的路径
Python的路径这么设置是因为碰到了报错:
Could NOT find PythonLibs (missing: PYTHON_LIBRARIES PYTHON_INCLUDE_DIRS)
具体可以参考:https://stackoverflow.com/questions/24174394/cmake-is-not-able-to-find-python-libraries
另外我试了下,-DPYTHON_INCLUDE_DIR=/home/user01/anaconda3/include/python3.7m/ ,编译也没有报错。网上也有人说如果找不到python.h就应该使用这种形式,嗯,还是自己编译的时候试试吧!
一般编译尽量使用release版本,如果你要debug,建议还是windows下的VC环境要方便得多(VC调试器实在太强大了)。