C++ linux/videodev.h：没有这样的文件或目录 - ubuntu 11.04 上的 OpenCV
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linux/videodev.h : no such file or directory - OpenCV on ubuntu 11.04
提问by Niroshan
I tried to install OpenCV2.2 on Ubuntu 11.04. But OpenCV compilation fails stating an error related to linux/videodev.h file. File available in /user/includes/linux is named videodev2.h.
我尝试在 Ubuntu 11.04 上安装 OpenCV2.2。但是 OpenCV 编译失败，说明与 linux/videodev.h 文件相关的错误。/user/includes/linux 中可用的文件名为 videodev2.h。
/home/user/OpenCV-2.2.0/modules/highgui/src/cap_v4l.cpp:217:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
make[2]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/src/cap_v4l.o] Error 1
make[1]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/all] Error 2
make: *** [all] Error 2
Is there a solution for this ?
有解决方案吗？
thank you.
谢谢你。
回答by bukzor
The current answer is incomplete. Installing libv4l-devcreates a /usr/include/linux/videodev2.hbut doesn't solve the stated problem of not being able to find linux/videodev.h. The library does ship header files for compatibility, but fails to put them where applications will look for them.
目前的答案是不完整的。安装libv4l-dev会创建一个/usr/include/linux/videodev2.h但不能解决无法找到linux/videodev.h. 为了兼容性，该库确实提供了头文件，但未能将它们放在应用程序将要查找的位置。
sudo apt-get install libv4l-dev
cd /usr/include/linux
sudo ln -s ../libv4l1-videodev.h videodev.h
This provides a linux/videodev.h, and of the right version (1).
这提供了linux/videodev.h正确版本 (1)的, 和 。
回答by Alberto
sudo apt-get install libv4l-dev
Editing for RH based systems:
为基于 RH 的系统编辑：
On a Fedora 16 to install pygame 1.9.1 (in a virtualenv):
在 Fedora 16 上安装 pygame 1.9.1（在 virtualenv 中）：
sudo yum install libv4l-devel
sudo ln -s /usr/include/libv4l1-videodev.h /usr/include/linux/videodev.h
回答by karlphillip
v4l support has been dropped in recent kernel versions (including the one shipped with Ubuntu 11.04).
最近的内核版本（包括随 Ubuntu 11.04 一起提供的内核版本）已取消对 v4l 的支持。
EDIT: Your question is connected to a recent messagethat was sent to the OpenCV users group, which has instructions to compile OpenCV 2.2 in Ubuntu 11.04. Your approach is not ideal.
编辑：您的问题与最近发送给 OpenCV 用户组的消息有关，该消息包含在 Ubuntu 11.04 中编译 OpenCV 2.2 的说明。你的方法并不理想。
回答by sujit
The patch is here: https://code.ros.org/trac/opencv/attachment/ticket/862/OpenCV-2.2-nov4l1.patch
补丁在这里：https: //code.ros.org/trac/opencv/attachment/ticket/862/OpenCV-2.2-nov4l1.patch
By adding #ifdef HAVE_CAMV4Laround
通过添加#ifdef HAVE_CAMV4L周围
#include <linux/videodev.h>
in OpenCV-2.2.0/modules/highgui/src/cap_v4l.cppand removing || defined (HAVE_CAMV4L2)from line 174allowed me to compile.
inOpenCV-2.2.0/modules/highgui/src/cap_v4l.cpp和 remove || defined (HAVE_CAMV4L2)from line174允许我编译。
回答by Vyacheslav
for CMake remove/disable with_libv4lwith_v4lvariables if you do not need this lib.
对于 CMake，with_libv4lwith_v4l如果您不需要此库，请删除/禁用变量。
