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【Xilinx-Petalinux学习】-04-OpenCV的移植

交叉编译PC平台 VMware12, CentOS 6.5 32 bit

在VMware中安装CentOS,用户名:xilinx-arm-opencv 密码:root

 

至于这里为什么用CentOS,而不是Ubuntu,是因为CentOS的内核可以支持V4L,而Ubuntu因为内核版本较高,已经没有了V4L的支持,只有V4L2。

总之为了方便还是再安装一个CentOS的虚拟机吧。

 

step1: 安装包、工具下载

首先下载各种依赖库源文件和工具。提到的都是我用到的版本,已经验证过,都是可以互相配合可用的。

OpenCV依赖库:

zlib-1.2.7.tar.gz

jpegsrc.v9b.tar.gz

libpng-1.5.14.tar.gz

last_stable_x264.tar.bz2 (x264-snapshot-20161127-2245-stable)

xvidcore-1.3.2.tar.gz

tiff-4.0.7.tar.gz

ffmpeg-0.10.16.tar.bz2

到时候这些依赖库需要按照上面的顺序安装。

交叉编译工具:

xilinx-2011.09-50-arm-xilinx-linux-gnueabi.bin

可百度去搜索下载,也可以用下面位大侠共享的网盘。网址:http://pan.baidu.com/share/link?shareid=2118817891&uk=2047711911&fid=131808308022716

还可以从网上下载较新版本的源码,但我还没有搞懂怎么去用。网址:https://www.xilinx.com/guest_resources/member/mb_gnu/xilinx-2015.05-17-arm-xilinx-linux-gnueabi.src.tar.bz2

OpenCV:

opencv-2.4.9

从官网下载Linux 32 bit版本的源码就可以了

 

step2: 交叉编译工具的安装

首先安装交叉编译工具需要用到的一些依赖库:

$ su -yum updateyum install glibc-devel.i686yum install gtk2-devel.i686yum install libcanberra.i686yum install libcanberra-gtk2.i686yum install PackageKit-gtk-module.i686yum install GConf2.i686yum install ncurses-libs.i686yum install xulrunner.i686

 

再来安装交叉编译工具。

复制 xilinx-2011.09-50-arm-xilinx-linux-gnueabi.bin 安装包到Linux中,运行:

./xilinx-2011.09-50-arm-xilinx-linux-gnueabi.bin

就会弹出类似Windows安装软件一样的界面,一直点Next直到安装成功。

接着添加环境变量,运行命令:

gedit ~/.bashrc#在文件最后加入下面几行文本export ARCH=armexport CROSS_COMPILE=arm-xilinx-linux-gnueabi-export PATH=/root/CodeSourcery/Sourcery_CodeBench_Lite_for_Xilinx_GNU_Linux/bin/:$PATH#保存并退出
#sourcesource ~/.bashrc

这样,我们就能够直接调用 arm-xilinx-linux-gnueabi-gcc指令了。

假如需要更新版本,卸载当前版本的话,运行:

/root/CodeSourcery/Sourcery_CodeBench_Lite_for_Xilinx_GNU_Linux/uninstall/Uninstall_Sourcery_CodeBench_Lite_for_Xilinx_GNU_Linux/Uninstall_Sourcery_CodeBench_Lite_for_Xilinx_GNU_Linux

 

step3: 交叉编译OpenCV需要的依赖库

先创建用来保存依赖库和OpenCV库的文件夹,执行命令:

#新建安装目录mkdir -p /usr/local/arm/opencv-libmkdir -p /usr/local/arm/opencv-arm#添加环境变量export ZYNQ_CV_INSTALL=/usr/local/arm/opencv-libexport CC=arm-xilinx-linux-gnueabi-gcc

解压所有的依赖库源代码,然后分别进入各个源码的文件夹进行交叉编译。一定要按照顺序安装,因为它们之间也有依赖关系。

zlib安装

./configure --prefix=$ZYNQ_CV_INSTALL --sharedmakemake install

jpeg安装

./configure --prefix=$ZYNQ_CV_INSTALL --host=arm-xilinx-linux-gnueabi --enable-sharedmakemake install

libpng安装

./configure --prefix=$ZYNQ_CV_INSTALL --host=arm-xilinx-linux-gnueabi --enable-arm-neon --enable-shared --with-pkgconfigdir=$ZYNQ_CV_INSTALL/lib/pkgconfig LDFLAGS=-L$ZYNQ_CV_INSTALL/lib CPPFLAGS=-I$ZYNQ_CV_INSTALL/includemakemake install

x264安装

./configure --host=arm-linux --cross-prefix=arm-xilinx-linux-gnueabi- --enable-shared  --disable-asm --prefix=$ZYNQ_CV_INSTALLmakemake install

xvidcore安装

cd build/generic/./configure --prefix=$ZYNQ_CV_INSTALL --host=arm-xilinx-linux-gnueabi  --disable-assemblymakemake install

tiff安装

./configure --prefix=$ZYNQ_CV_INSTALL --host=arm-xilinx-linux-gnueabi --enable-shared LDFLAGS=-L$ZYNQ_CV_INSTALL/lib CFLAGS=-I$ZYNQ_CV_INSTALL/includemakemake install

ffmpeg安装

./configure --prefix=$ZYNQ_CV_INSTALL --enable-shared --disable-static --enable-gpl --enable-cross-compile --arch=arm --disable-stripping --target-os=linux --enable-libx264 --enable-libxvid --cc=arm-xilinx-linux-gnueabi-gcc --enable-swscale --extra-cflags=-I$ZYNQ_CV_INSTALL/include --extra-ldflags=-L$ZYNQ_CV_INSTALL/lib --disable-asmmakemake install

为了在编译OpenCV时确保ffmpeg的正常链接,需要添加PKG_CONFIG_PATH环境变量

gedit /etc/bashrc#在文件最后添加如下内容PKG_CONFIG_PATH=$PKG_CONFIG_PATH:$ZYNQ_CV_INSTALL/lib/pkgconfigexport PKG_CONFIG_PATH#保存并退出#sourcesource /etc/bashrc

这些我都试了很多遍了,就按照上面的方法配置、编译和安装即可,就不去详细的说明各个配置参数的意义了。

 

step4: 交叉编译OpenCV 2.4.9

安装cmake:

yum install cmakeyum install cmake-gui

解压OpenCV 2.4.9源码,进行配置:

#进入文件夹cd opencv-2.4.9#建立并进入编译文件夹mkdir buildcd build#创建文件gedit toolchain.cmake#修改文件,在其中加入如下内容:###########user defined#############set( CMAKE_SYSTEM_NAME Linux )set( CMAKE_SYSTEM_PROCESSOR arm )set( CMAKE_C_COMPILER arm-xilinx-linux-gnueabi-gcc )set( CMAKE_CXX_COMPILER arm-xilinx-linux-gnueabi-g++ )###########user defined#############set( CMAKE_FIND_ROOT_PATH "/usr/local/arm/opencv-lib" )set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER )set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )#######################################保存并退出#添加LDFLAGS环境变量export LDFLAGS=-Wl,-rpath-link,/usr/local/arm/opencv-lib#在CentOS中,使OpenCV支持V4Lcp /usr/include/linux/videodev.h /root/CodeSourcery/Sourcery_CodeBench_Lite_for_Xilinx_GNU_Linux/arm-xilinx-linux-gnueabi/libc/usr/include/linux/#cmakecmake -D CMAKE_TOOLCHAIN_FILE=toolchain.cmake -D CMAKE_INSTALL_PREFIX=/usr/local/arm/opencv-arm ../#cmake配置cmake-gui

接着就打开了cmake-gui的配置界面,在里面可以配置opencv的编译选项。

 

在cmake GUI中,勾选 Grouped 和 Advanced 选项框,核对以下信息:

1. 源码与安装目录。需要跟下面一模一样

Where is the source code: /home/xilinx-arm-opencv/PetaLinux/package/opencv/opencv-2.4.9

Where to build the binaries: /home/xilinx-arm-opencv/PetaLinux/package/opencv/opencv-2.4.9/build

2. CMAKE项。需要跟下面一模一样

CMAKE_INSTALL_PREFIX : /usr/local/arm/opencv-arm

CMAKE_EXE_LINKER_FLAGS : -Wl,-rpath-link,/usr/local/arm/opencv-lib

CMAKE_C_COMPILER : /root/CodeSourcery/Sourcery_CodeBench_Lite_for_Xilinx_GNU_Linux/bin/arm-xilinx-linux-gnueabi-gcc

CMAKE_CXX_COMPILER : /root/CodeSourcery/Sourcery_CodeBench_Lite_for_Xilinx_GNU_Linux/bin/arm-xilinx-linux-gnueabi-g++

3.WITH项。只勾选如下选项,其他都不勾选

WITH_FFMPEG

WITH_JASPER

WITH_JPEG

WITH_OPENEXR

WITH_PNG

WITH_TIFF

WITH_V4L

界面如下图:

技术分享

配置完成后点击Configure按钮,会打印出如下信息:(特别需要注意标红的LOG信息与我的是否相同!)

 

General configuration for OpenCV 2.4.9 =====================================
  Version control:               unknown

  Platform:
    Host:                        Linux 2.6.32-431.el6.i686 i686
    Target:                      Linux arm
    CMake:                       2.8.12.2
    CMake generator:             Unix Makefiles
    CMake build tool:            /usr/bin/gmake
    Configuration:               Release

  C/C++:
    Built as dynamic libs?:      YES
    C++ Compiler:                /root/CodeSourcery/Sourcery_CodeBench_Lite_for_Xilinx_GNU_Linux/bin/arm-xilinx-linux-gnueabi-g++  (ver 4.6.1)
    C++ flags (Release):         -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -O3 -DNDEBUG  -DNDEBUG
    C++ flags (Debug):           -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -g  -O0 -DDEBUG -D_DEBUG
    C Compiler:                  /root/CodeSourcery/Sourcery_CodeBench_Lite_for_Xilinx_GNU_Linux/bin/arm-xilinx-linux-gnueabi-gcc
    C flags (Release):           -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -O3 -DNDEBUG  -DNDEBUG
    C flags (Debug):             -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -g  -O0 -DDEBUG -D_DEBUG
    Linker flags (Release):      -Wl,-rpath-link,/usr/local/arm/opencv-lib
    Linker flags (Debug):        -Wl,-rpath-link,/usr/local/arm/opencv-lib
    Precompiled headers:         YES

  OpenCV modules:
    To be built:                 core flann imgproc highgui features2d calib3d ml video legacy objdetect photo gpu nonfree contrib stitching superres ts videostab
    Disabled:                    world
    Disabled by dependency:      -
    Unavailable:                 androidcamera dynamicuda java ocl python viz

  GUI:
    QT:                          NO
    GTK+ 2.x:                    NO
    GThread :                    NO
    GtkGlExt:                    NO
    OpenGL support:              NO
    VTK support:                 NO

  Media I/O:
    ZLib:                        /usr/local/arm/opencv-lib/lib/libz.so (ver 1.2.7)
    JPEG:                        /usr/local/arm/opencv-lib/lib/libjpeg.so (ver 90)
    PNG:                         /usr/local/arm/opencv-lib/lib/libpng.so (ver 1.5.14)
    TIFF:                        /usr/local/arm/opencv-lib/lib/libtiff.so (ver 42 - 4.0.7)
    JPEG 2000:                   build (ver 1.900.1)
    OpenEXR:                     build (ver 1.7.1)

  Video I/O:
    DC1394 1.x:                  NO
    DC1394 2.x:                  NO
    FFMPEG:                      YES
      codec:                     YES (ver 53.61.100)
      format:                    YES (ver 53.32.100)
      util:                      YES (ver 51.35.100)
      swscale:                   YES (ver 2.1.100)
      gentoo-style:              YES
    GStreamer:                   NO
    OpenNI:                      NO
    OpenNI PrimeSensor Modules:  NO
    PvAPI:                       NO
    GigEVisionSDK:               NO
    UniCap:                      NO
    UniCap ucil:                 NO
    V4L/V4L2:                    YES/YES
    XIMEA:                       NO
    Xine:                        NO

  Other third-party libraries:
    Use IPP:                     NO
    Use Eigen:                   NO
    Use TBB:                     NO
    Use OpenMP:                  NO
    Use GCD                      NO
    Use Concurrency              NO
    Use C=:                      NO
    Use Cuda:                    NO
    Use OpenCL:                  NO

  Python:
    Interpreter:                 /usr/bin/python2 (ver 2.6.6)

  Java:
    ant:                         NO
    JNI:                         NO
    Java tests:                  NO

  Documentation:
    Build Documentation:         NO
    Sphinx:                      NO
    PdfLaTeX compiler:           NO

  Tests and samples:
    Tests:                       YES
    Performance tests:           YES
    C/C++ Examples:              NO

  Install path:                  /usr/local/arm/opencv-arm

  cvconfig.h is in:              /home/xilinx-arm-opencv/PetaLinux/package/opencv/opencv-2.4.9/build
-----------------------------------------------------------------

Configuring done

 

再点击Generate按钮,即完成了makefile文件的配置。关闭cmake gui界面。

最后编译并安装opencv:

#编译前需要将交叉编译好的依赖库连接或复制到交叉编译工具中去#否则会在opencv编译时出现类似undefined reference to `png_set_strip_alpha@PNG15_0‘的错误cp -r /usr/local/arm/opencv-lib/lib/* /root/CodeSourcery/Sourcery_CodeBench_Lite_for_Xilinx_GNU_Linux/arm-xilinx-linux-gnueabi/libc/usr/lib/#编译并安装makemake install

最终,我们完成了OpenCV的交叉编译,并得到了两个文件夹的文件,分别是:

#opencv依赖库/usr/local/arm/opencv-lib#opencv库/usr/local/arm/opencv-arm

通过它们,就可以编译和运行我们Zynq板的PetaLInux中运行opencv程序了。

 

下一次再记录如何使用我们编译好的库文件。

 

【Xilinx-Petalinux学习】-04-OpenCV的移植