交叉編譯PC平臺 VMware12, CentOS 6.5 32 bitjava
在VMware中安裝CentOS,用戶名:xilinx-arm-opencv 密碼:rootpython
至於這裏爲何用CentOS,而不是Ubuntu,是由於CentOS的內核能夠支持V4L,而Ubuntu由於內核版本較高,已經沒有了V4L的支持,只有V4L2。linux
總之爲了方便仍是再安裝一個CentOS的虛擬機吧。android
step1: 安裝包、工具下載bash
首先下載各類依賴庫源文件和工具。提到的都是我用到的版本,已經驗證過,都是能夠互相配合可用的。ide
OpenCV依賴庫:
工具
zlib-1.2.7.tar.gzui
jpegsrc.v9b.tar.gzspa
libpng-1.5.14.tar.gzprototype
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
到時候這些依賴庫須要按照上面的順序安裝。
交叉編譯工具:
xilinx-2011.09-50-arm-xilinx-linux-gnueabi.bin
可百度去搜索下載,也能夠用下面位大俠共享的網盤。網址:http://pan.baidu.com/share/link?shareid=2118817891&uk=2047711911&fid=131808308022716
還能夠從網上下載較新版本的源碼,但我尚未搞懂怎麼去用。網址: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
從官網下載Linux 32 bit版本的源碼就能夠了
step2: 交叉編譯工具的安裝
首先安裝交叉編譯工具須要用到的一些依賴庫:
$ su - yum update yum install glibc-devel.i686 yum install gtk2-devel.i686 yum install libcanberra.i686 yum install libcanberra-gtk2.i686 yum install PackageKit-gtk-module.i686 yum install GConf2.i686 yum install ncurses-libs.i686 yum install xulrunner.i686
再來安裝交叉編譯工具。
複製 xilinx-2011.09-50-arm-xilinx-linux-gnueabi.bin 安裝包到Linux中,運行:
./xilinx-2011.09-50-arm-xilinx-linux-gnueabi.bin
就會彈出相似Windows安裝軟件同樣的界面,一直點Next直到安裝成功。
接着添加環境變量,運行命令:
gedit ~/.bashrc #在文件最後加入下面幾行文本 export ARCH=arm export CROSS_COMPILE=arm-xilinx-linux-gnueabi- export PATH=/root/CodeSourcery/Sourcery_CodeBench_Lite_for_Xilinx_GNU_Linux/bin/:$PATH #保存並退出
#source source ~/.bashrc
這樣,咱們就可以直接調用 arm-xilinx-linux-gnueabi-gcc指令了。
假如須要更新版本,卸載當前版本的話,運行:
/root/CodeSourcery/Sourcery_CodeBench_Lite_for_Xilinx_GNU_Linux/uninstall/Uninstall_Sourcery_CodeBench_Lite_for_Xilinx_GNU_Linux/Uninstall_Sourcery_CodeBench_Lite_for_Xilinx_GNU_Linux
step3: 交叉編譯OpenCV須要的依賴庫
先建立用來保存依賴庫和OpenCV庫的文件夾,執行命令:
#新建安裝目錄 mkdir -p /usr/local/arm/opencv-lib mkdir -p /usr/local/arm/opencv-arm #添加環境變量 export ZYNQ_CV_INSTALL=/usr/local/arm/opencv-lib export CC=arm-xilinx-linux-gnueabi-gcc
解壓全部的依賴庫源代碼,而後分別進入各個源碼的文件夾進行交叉編譯。必定要按照順序安裝,由於它們之間也有依賴關係。
zlib安裝
./configure --prefix=$ZYNQ_CV_INSTALL --shared make make install
jpeg安裝
./configure --prefix=$ZYNQ_CV_INSTALL --host=arm-xilinx-linux-gnueabi --enable-shared make make install
libpng安裝
./configure --prefix=$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$ZYNQ_CV_INSTALL/include make make install
x264安裝
./configure --host=arm-linux --cross-prefix=arm-xilinx-linux-gnueabi- --enable-shared --disable-asm --prefix=$ZYNQ_CV_INSTALL make make install
xvidcore安裝
cd build/generic/ ./configure --prefix=$ZYNQ_CV_INSTALL --host=arm-xilinx-linux-gnueabi --disable-assembly make make install
tiff安裝
./configure --prefix=$ZYNQ_CV_INSTALL --host=arm-xilinx-linux-gnueabi --enable-shared LDFLAGS=-L$ZYNQ_CV_INSTALL/lib CFLAGS=-I$ZYNQ_CV_INSTALL/include make make install
ffmpeg安裝
./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$ZYNQ_CV_INSTALL/lib --disable-asm make make install
爲了在編譯OpenCV時確保ffmpeg的正常連接,須要添加PKG_CONFIG_PATH環境變量
gedit /etc/bashrc #在文件最後添加以下內容 PKG_CONFIG_PATH=$PKG_CONFIG_PATH:$ZYNQ_CV_INSTALL/lib/pkgconfig export PKG_CONFIG_PATH #保存並退出 #source source /etc/bashrc
這些我都試了不少遍了,就按照上面的方法配置、編譯和安裝便可,就不去詳細的說明各個配置參數的意義了。
step4: 交叉編譯OpenCV 2.4.9
安裝cmake:
yum install cmake yum install cmake-gui
解壓OpenCV 2.4.9源碼,進行配置:
#進入文件夾 cd opencv-2.4.9 #創建並進入編譯文件夾 mkdir build cd build #建立文件 gedit toolchain.cmake #修改文件,在其中加入以下內容: ###########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 ) ###################################### #保存並退出 #添加LDFLAGS環境變量 export LDFLAGS=-Wl,-rpath-link,/usr/local/arm/opencv-lib/lib #在CentOS中,使OpenCV支持V4L cp /usr/include/linux/videodev.h /root/CodeSourcery/Sourcery_CodeBench_Lite_for_Xilinx_GNU_Linux/arm-xilinx-linux-gnueabi/libc/usr/include/linux/ #cmake cmake -D CMAKE_TOOLCHAIN_FILE=toolchain.cmake -D CMAKE_INSTALL_PREFIX=/usr/local/arm/opencv-arm ../ #cmake配置 cmake-gui
接着就打開了cmake-gui的配置界面,在裏面能夠配置opencv的編譯選項。
在cmake GUI中,勾選 Grouped 和 Advanced 選項框,覈對如下信息:
1. 源碼與安裝目錄。須要跟下面如出一轍
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項。須要跟下面如出一轍
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項。只勾選以下選項,其餘都不勾選
WITH_FFMPEG
WITH_JASPER
WITH_JPEG
WITH_OPENEXR
WITH_PNG
WITH_TIFF
WITH_V4L
界面以下圖:
配置完成後點擊Configure按鈕,會打印出以下信息:(特別須要注意標紅的LOG信息與個人是否相同!)
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
再點擊Generate按鈕,即完成了makefile文件的配置。關閉cmake gui界面。
最後編譯並安裝opencv:
#編譯前須要將交叉編譯好的依賴庫鏈接或複製到交叉編譯工具中去 #不然會在opencv編譯時出現相似undefined reference to `png_set_strip_alpha@PNG15_0'的錯誤 cp -r /usr/local/arm/opencv-lib/lib/* /root/CodeSourcery/Sourcery_CodeBench_Lite_for_Xilinx_GNU_Linux/arm-xilinx-linux-gnueabi/libc/usr/lib/ #編譯並安裝 make make install
最終,咱們完成了OpenCV的交叉編譯,並獲得了兩個文件夾的文件,分別是:
#opencv依賴庫 /usr/local/arm/opencv-lib #opencv庫 /usr/local/arm/opencv-arm
經過它們,就能夠編譯和運行咱們Zynq板的PetaLInux中運行opencv程序了。
下一次再記錄如何使用咱們編譯好的庫文件。