移植opencv-2.4.6到tiny210v2

环境： ubuntu

交叉编译：arm-linux-gcc

参考：

blog.csdn.net/top_dada/article/details/8183758

一、编译libz

下载：

www.zlib.net/

配置：

./configure --prefix=/opt/FriendlyARM/toolschain/4.5.1/arm-none-linux-gnueabi --shared

修改Makefile：

CC=arm-linux-gcc

LDSHARED=arm-linux-gcc
-shared -wl, -soname,libz.so.1,--version-script,zlib.map

CPP=arm-linux-gcc
-E

AR=arm-linux-ar

RANLIB=arm-linux-ranlib

编译：

make

sudo
make install

二、编译libjpeg

下载：
http://www.ijg.org/
配置：

./configure
--host=arm-linux --prefix=/opt/FriendlyARM/toolschain/4.5.1/arm-none-linux-gnueabi --enable-shared --enable-static

编译：

make

sudo
make install

出错：
arm-linux-ranlib: command not found

解决：
google得是sudo的问题，在make install 之前采用su。几番尝试不行，更改安装目录

新建个目录：
~/arm/libjpeg

./configure --host=arm-linux --prefix=/home/host/arm/libjpeg --enable-shared --enable-static

再make

make install

再复制到/opt/FriendlyARM/toolschain/4.5.1/arm-none-linux-gnueabi

三、编译libpng

下载：
http://sourceforge.net/projects/libpng/files/latest/download?source=files
配置：

./configure --host=arm-linux --prefix=/opt/FriendlyARM/toolschain/4.5.1/arm-none-linux-gnueabi --enable-shared --enable-static

编译make

sudo make install

四、编译yasm

下载：
http://yasm.tortall.net/Download.html
配置:

./configure
--host=arm-linux --prefix=/opt/FriendlyARM/toolschain/4.5.1/arm-none-linux-gnueabi --enable-shared --enable-static

编译make

make install

五、编译libx264

下载：
http://www.videolan.org/developers/x264.html
配置：

./configure
--enable-shared --host=arm-linux --disable-asm --prefix=/opt/FriendlyARM/toolschain/4.5.1/arm-none-linux-gnueabi

修改config.mak，如下

CC=arm-linux-gcc

LD=arm-linux-gcc
-o

AR=arm-linux-ar
rc

RANLINB=arm-linux-ranlib

修改库位置

编译：

make

sudo
make install

六、编译libxvid

下载：

cd
build/generic

./configure
--prefix=/opt/FriendlyARM/toolschain/4.5.1/arm-none-linux-gnueabi --host=arm-linux --disable-assembly

make

sudo
make install

七、编译ffmpeg

下载：

git
clone git://source.ffmpeg.org/ffmpeg.git ffmpeg

配置：

./configure
--prefix=/opt/FriendlyARM/toolschain/4.5.1/arm-none-linux-gnueabi --enable-shared --disable-static --enable-gpl --enable-cross-compile --arch=arm --disable-stripping --target-os=linux --enable-libx264 --enable-libxvid --cc=arm-linux-gcc --enable-swscale

当出现

tmp/ccOmDdh7.s: Assembler messages:
/tmp/ccOmDdh7.s:51789: Error: thumb conditional instruction should be in IT block -- `movgt fp,r9'
/tmp/ccOmDdh7.s:51790: Error: thumb conditional instruction should be in IT block -- `movgt r9,r8'
/tmp/ccOmDdh7.s:51792: Error: thumb conditional instruction should be in IT block -- `movle r9,r7'
/tmp/ccOmDdh7.s:51794: Error: thumb conditional instruction should be in IT block -- `movgt fp,r9'

这需要修改~/ffmpeg-0.5.1/config.mak，在OPTFLAGS（line：16）选项中添加：-Wa,-mimplicit-it=thumb

make

make
install

编译opencv之前安装cmake-gui

八、编译opencv

交叉编译工具链所在目录 /opt/FriendlyARM/toolschain/4.5.1/

安装opencv的目录 /usr/local/

opencv源码所在目录 /home/dongyu/opencv-2.4.6/

编译好的opencv库所在目录 /home/dongyu/opencv-2.4.6/build

#mkdir build

#cd build

#cmake-gui

选择源代码目录/home/dongyu/opencv-2.4.6/

选择Build目录：/home/dongyuopencv-2.4.6/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/opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-gcc

C++ Compilers填写/opt/FriendlyARM/toolschain/4.5.1//bin/arm-linux-g++

程序库的Target Root填写/opt/FriendlyARM/toolschain/4.5.1/

然后点击Finish，点击Configure，产生配置列表，在其中

选择安装目录（CMAKE_INSTALL_PREFIX）为/opt/FriendlyARM/toolschain/4.5.1/arm-none-linux-gnueabi

去掉WITH_CUDA，WITH_TIFF勾选，点击Generate生成Makefile

修改CMakeCache.txt，CMAKE_EXE_LINKER_FLAGS原来为空，加上-lpthread -lrt

#make

出现错误：

../../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_highgui.so: undefined reference to `_TIFFmemset'

CMAKE去掉TIFF支持即可；

#make install

安装完毕