OpenCV 2.4.8 for Raspberry Pi

できるだけ待ち時間を短くできるように、色々調整してみる。

予め必要なライブラリをインストール

OpenCVはいくつかの3rd partyなライブラリを含んでいるので、コンパイルせずにapt-get installで入れておく。

$ sudo apt-get update
$ sudo apt-get install cmake
$ sudo apt-get install libgtk2.0-dev
$ sudo apt-get install libtiff5-dev
$ sudo apt-get install libjasper-dev

ソースコードをダウンロード ( http://opencv.org/ )

$ wget "http://downloads.sourceforge.net/project/opencvlibrary/opencv-unix/2.4.8/opencv-2.4.8.zip"
$ unzip opencv-2.4.8.zip

Makefileを作ってコンパイル

サンプルとかテストとかなくてもいいよね？ドキュメントも作られない事を確認済み。

$ cd opencv-2.4.8 ; mkdir build ; cd build ;

$ cmake -D BUILD_EXAMPLES=OFF -D BUILD_PERF_TESTS=OFF -D BUILD_TESTS=OFF ..

コンパイルしてインストールする

$ time make

二時間ちょっとで終わりました。

[100%] Built target opencv_traincascade

real 137m58.904s

user 126m22.630s

sys 2m33.940s

生成された設定は以下の通り（参考）

--

-- General configuration for OpenCV 2.4.8 =====================================

-- Version control: unknown

--

-- Platform:

-- Host: Linux 3.6.11+ armv6l

-- CMake: 2.8.9

-- CMake generator: Unix Makefiles

-- CMake build tool: /usr/bin/make

-- Configuration: Release

--

-- C/C++:

-- Built as dynamic libs?: YES

-- C++ Compiler: /usr/bin/c++ (ver 4.6.3)

-- 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: /usr/bin/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):

-- Linker flags (Debug):

-- Precompiled headers: YES

--

-- OpenCV modules:

-- To be built: core flann imgproc highgui features2d calib3d ml video legacy objdetect photo gpu ocl nonfree contrib python stitching superres ts videostab

-- Disabled: world

-- Disabled by dependency: -

-- Unavailable: androidcamera dynamicuda java

--

-- GUI:

-- QT: NO

-- GTK+ 2.x: YES (ver 2.24.10)

-- GThread : YES (ver 2.32.4)

-- GtkGlExt: NO

-- OpenGL support: NO

--

-- Media I/O:

-- ZLib: /usr/lib/arm-linux-gnueabihf/libz.so (ver 1.2.7)

-- JPEG: /usr/lib/arm-linux-gnueabihf/libjpeg.so (ver 80)

-- PNG: /usr/lib/arm-linux-gnueabihf/libpng.so (ver 1.2.49)

-- TIFF: /usr/lib/arm-linux-gnueabihf/libtiff.so (ver 42 - 4.0.2)

-- JPEG 2000: /usr/lib/arm-linux-gnueabihf/libjasper.so (ver 1.900.1)

-- OpenEXR: /usr/lib/libImath.so /usr/lib/libIlmImf.so /usr/lib/libIex.so /usr/lib/libHalf.so /usr/lib/libIlmThread.so (ver 1.6.1)

--

-- Video I/O:

-- DC1394 1.x: NO

-- DC1394 2.x: NO

-- FFMPEG: NO

-- codec: NO

-- format: NO

-- util: NO

-- swscale: NO

-- gentoo-style: NO

-- GStreamer:

-- base: YES (ver 0.10.36)

-- app: YES (ver 0.10.36)

-- video: YES (ver 0.10.36)

-- OpenNI: NO

-- OpenNI PrimeSensor Modules: NO

-- PvAPI: NO

-- GigEVisionSDK: NO

-- UniCap: NO

-- UniCap ucil: NO

-- V4L/V4L2: NO/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: YES

--

-- OpenCL:

-- Version: dynamic

-- Include path: /home/pi/opencv/opencv-2.4.8/3rdparty/include/opencl/1.2

-- Use AMD FFT: NO

-- Use AMD BLAS: NO

--

-- Python:

-- Interpreter: /usr/bin/python2 (ver 2.7.3)

-- Libraries: /usr/lib/libpython2.7.so (ver 2.7.3)

-- numpy: /usr/lib/pymodules/python2.7/numpy/core/include (ver 1.6.2)

-- packages path: lib/python2.7/dist-packages

--

-- Java:

-- ant: NO

-- JNI: NO

-- Java tests: NO

--

-- Documentation:

-- Build Documentation: NO

-- Sphinx: NO

-- PdfLaTeX compiler: NO

--

-- Tests and samples:

-- Tests: NO

-- Performance tests: NO

-- C/C++ Examples: NO

--

-- Install path: /usr/local

--

-- cvconfig.h is in: /home/pi/opencv/opencv-2.4.8/build

-- -----------------------------------------------------------------

--

-- Configuring done

-- Generating done

-- Build files have been written to: /home/pi/opencv/opencv-2.4.8/build