Ubuntu 交叉编译openCV3.2 至s5pv210环境

一、环境

         1.Ubuntu16.04.2

         2.openCV3.2

         3.交叉编译器：arm-linux-gcc4.4.3 （经过测试，最好采用此版本交叉编译，报错的机会会少点）

 

二、交叉编译器问题

1.成功安装交叉编译4.4.3后，至于怎么安装交叉编译器，请百度很多这方面的教程，执行编译命令会报错，libstdc++.so.6: cannot open shared object file

 

解决方法：

         在13.10 版本中，ia32_libs被废弃了导致没有32位的lib库

         sudoapt-get install lib32stdc++6

         sudoapt-get install lib32z1

 

三、编译问题

1./home/wzh/tools/arm/opencv-3.2.0/modules/imgproc/src/drawing.cpp:1026:error: call of overloaded 'abs(long long int&)' is ambiguous

 

解决方法：

         修改上面对应路径的drawing.cpp，在1026行，把那一行里的所有abs换成fabs

 

2. ./../lib/libopencv_core.so: undefinedreference to `pthread_mutexattr_destroy'

../../lib/libopencv_imgcodecs.so: undefinedreference to `pthread_create'

../../lib/libopencv_core.so: undefinedreference to `dlopen'

../../lib/libopencv_core.so: undefinedreference to `pthread_mutex_trylock'

../../lib/libopencv_core.so: undefinedreference to `clock_gettime'

../../lib/libopencv_core.so: undefinedreference to `dlsym'

../../lib/libopencv_core.so: undefinedreference to `pthread_mutexattr_settype'

../../lib/libopencv_imgcodecs.so: undefinedreference to `pthread_join'

../../lib/libopencv_core.so: undefinedreference to `pthread_mutexattr_init'

 

解决方法：

修改/opt/opencv3-build目录下的CMakeCache.txt

CMAKE_EXE_LINKER_FLAGS原来为空，加上-lpthread –lrt

 
四、s5pv210上运行
1.把openCV编译好的lib库下的所有*so 拷贝进板子里根目录下的lib目录下
2.运行程序，报错：
 
OpenCVError: Unspecified error (The function is not implemented. Rebuild the librarywith Windows, GTK+ 2.x or Carbon support. If you are on Ubuntu or Debian,install libgtk2.0-dev and pkg-config, then re-run cmake or configure script) incvNamedWindow,
file/home/wzh/tools/arm/opencv-3.2.0/modules/highgui/src/window.cpp, line 565
terminatecalled after throwing an instance of 'cv::Exception'
  what(): /home/wzh/tools/arm/opencv-3.2.0/modules/highgui/src/window.cpp:565:error: (-2) The function is not implemented. Rebuild the library with Windows,GTK+ 2.x or Carbon support. If you are on Ubuntu or Debian, installlibgtk2.0-dev and
pkg-config, then re-run cmake or configure script in functioncvNamedWindow
 
解决方法：
         需要进行gtk2.0交叉编译，这里没有这样做，采用QT UI 来进行显示。如需要进行gtk2.0交叉编译，参考这个博客的方法：http://blog.csdn.net/water_cow/article/details/8727990