Tina openwrt平台下opencv交叉编译-huangea的博客

本文参考http://blog.csdn.net/tankaro/article/details/74451812博文。

在此基础上移植了opencv3.4.0

1.环境准备，安装一些依赖库

sudo apt-get install manpages-posix-dev

sudo apt-get install glibc-doc

sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libtiff5-dev libjasper-dev libdc1394-22-dev

sudo apt-get install cmake git libgtk2.0-dev pkg-config libswscale-dev cmake-qt-gui

2.下载opencv源码，以下以3.4.0为例：

Git：https://github.com/opencv/opencv/releases/tag/3.4.0

3.cmake配置：

在opencv源码目录下执行命令cmake-gui

在opencv目录下创建output目录，然后按下面图示填写

然后点击configure按钮

点击next

点击finish

分别点击configure和generate按钮

退出cmake-gui

进入output目录后执行make

出现如下错误：

/home/huangea/opencv-3.4.0/3rdparty/protobuf/src/google/protobuf/stubs/common.cc:51:2: error: #error “No suitable threading library available.” #error “No suitable threading library available.” ^ make[2]: *** [3rdparty/protobuf/CMakeFiles/libprotobuf.dir/src/google/protobuf/stubs/common.cc.obj] Error 1 make[1]: *** [3rdparty/protobuf/CMakeFiles/libprotobuf.dir/all] Error 2 make: *** [all] Error 2 #### make failed to build some targets (1 seconds) ####

查看opencv-3.4.0/3rdparty/protobuf/src/google/protobuf/stubs/common.cc文件，发现是找不到HAVE_PTHREAD宏定义导致找不到pthread库，本文解决办法就是在该文件加上该句宏定义（临时解决，有其他更好的方法欢迎告知探讨）#define HAVE_PTHREAD

如下：