Opencv3.2移植到arm板

本文介绍了如何将Opencv3.2移植到arm板上,重点是解决交叉编译过程中的错误,如链接错误和找不到特定库的问题。通过详细步骤,包括配置交叉编译环境、修改编译选项、处理undefined reference错误,并最终成功在目标板上运行。

注:博客中有些图片部分为了省事,借用了别人博客的图片,相关部分注意事项相同。若有侵权,请联系删除!

一,Opencv3.2移植到arm

Opencv3.2

ubuntu16.04

目标板:飞凌嵌入式iMx6-ul

前一:把opencv源码,/modules/highgui/src/windows.cpp  文件第583行和654行注释掉!!!非常重要!!! 

  583 行: CV_NO_GUI_ERROR("cvshowImage")

  654行:CV_NO_GUI_ERROR("cvWaitKey")  

不然程序运行时会提示如下让先安装gtk+2.x之类的错误。应该是没有显示屏显示的原因。

  “OpenCV Error: Unspecified error (The function is not implemented. Rebuild the library with 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) in cvNamedWindow”

1,配置交叉编译环境,见imx6-ul软件手册

2,在源码目录下打开终端  /cmake-gui      // 启动cmake

在cmake界面中进行配置  

opencv2.4.4移植ARM 一、编译环境及库文件 linux环境:ubuntu 11.10 交叉编译:4.6.1 opencv: opencv-2.4.4 cmake: cmake-2.8.1-Linux-i386.tar.gz 二、opencv-2.4.4的移植过程 解压cmake-2.8.1-Linux-i386.tar.gz到/usr/local/ cmake-2.8.1 #export PATH= /usr/local/ cmake-2.8.1/bin:$PATH 用到的主要目录说明: 交叉编译工具链所在目录 /usr/local/arm-4.6.1/ 安装opencv的目录 /usr/local/ opencv源码所在目录 /usr/local /opencv-2.4.4 编译好的opencv库所在目录 /usr/local /opencv-2.4.4/build 默认安装目录为/usr/local #mkdir build #cd build #cmake-gui 选择源代码目录 /usr/local /opencv-2.4.4 选择Build目录 /usr/local /opencv-2.4.4/build 点击Configure,保持generator为Unix Makefiles,选择Specify options for cross-compiling,点击Next, Operating System填写arm-linux C Compilers填写/usr/local/arm-4.6.1//bin/arm-none-linux-gnueabi-gcc C++ Compilers填写/usr/local/arm-4.6.1//bin/ arm-none-linux-gnueabi -g++ 程序库的Target Root填写/usr/local/arm-4.6.1/ 然后点击Finish,开始configure 点击Generate生成Makefile(等configure完之后按钮才能点击) #make 错误一: Linking CXX executable ../../bin/opencv_createsamples ../../lib/libopencv_core.so: undefined reference to `clock_gettime' ../../lib/libopencv_highgui.so: undefined reference to `_TIFFerrorHandler' ../../lib/libopencv_highgui.so: undefined reference to `_TIFFrealloc' ../../lib/libopencv_core.so: undefined reference to `pthread_key_create 解决方法: 修改CMakeCache.txt,CMAKE_EXE_LINKER_FLAGS原来为空,加上-lpthread -lrt,重新编译,错误消除 错误二: Linking CXX executable ../../bin/opencv_createsamples ../../lib/libopencv_highgui.so: undefined reference to `_TIFFerrorHandler' ../../lib/libopencv_highgui.so: undefined reference to `_TIFFrealloc' ../../lib/libopencv_highgui.so: undefined reference to `_TIFFmalloc' ../../lib/libopencv_highgui.so: undefined reference to `_TIFFmemcpy' ../../lib/libopencv_highgui.so: undefined reference to `TIFFOpen' ../../lib/libopencv_highgui.so: undefined reference to `_TIFFfree' ../../lib/libopencv_highgui.so: undefined reference to `_TIFFwarningHandler' ../../lib/libopencv_highgui.so: undefined reference to `_TIFFmemcmp' ../../lib/libopencv_high
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