opencv-package 'eigen3' not found

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本文介绍了解决Autoware编译过程中遇到的找不到OpenCV等依赖包的问题。通过设置环境变量PKG_CONFIG_PATH，指向正确的库文件路径，成功解决了编译错误。

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编译Autoware时，出现

Package opencv was not found in the pkg-config search path.
Perhaps you should add the directory containing `opencv.pc'
to the PKG_CONFIG_PATH environment variable
No package 'opencv' found

找不到opencv, eigen3, pcl_io-1.7这些package，

则用命令pkg-config –modversion opencv查看一下，确实找不到。
然后在系统的/usr目录下，

find . -name libopencv*

找到opencv的库文件存放的目录，/usr/lib/x86_64-linux-gnu，在命令行或者~/.bashrc中输入:

export PKG_CONFIG_PATH=${PKG_CONFIG_PATH}:/usr/lib/pkgconfig/:/usr/lib/x86_64-linux-gnu/pkgconfig:/usr/share/pkgconfig

即可

参考资料

https://prateekvjoshi.com/2013/10/18/package-opencv-not-found-lets-find-it/

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