Linux / videodev.h: no such file or directory - OpenCV on ubuntu 11.04

Question

I tried installing OpenCV2.2 on Ubuntu 11.04. But compiling OpenCV does not allow you to specify the error associated with the linux / videodev.h file. The file available in / user / includes / linux is called 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?

thank.

Answer 1

 sudo apt-get install libv4l-dev 

Editing systems based on RH :

On Fedora 16 to install pygame 1.9.1 (in virtualenv):

 sudo yum install libv4l-devel sudo ln -s /usr/include/libv4l1-videodev.h /usr/include/linux/videodev.h 

Answer 2

The current answer is incomplete. Installing libv4l-dev creates /usr/include/linux/videodev2.h but does not solve the stated problem of being unable to find linux/videodev.h . The library stores header files for compatibility, but you cannot place them where applications will look for them.

 sudo apt-get install libv4l-dev cd /usr/include/linux sudo ln -s ../libv4l1-videodev.h videodev.h 

This provides linux/videodev.h and the correct version (1).

Answer 3

The patch is here: https://code.ros.org/trac/opencv/attachment/ticket/862/OpenCV-2.2-nov4l1.patch

By adding #ifdef HAVE_CAMV4L around

 #include <linux/videodev.h> 

in OpenCV-2.2.0/modules/highgui/src/cap_v4l.cpp and removing || defined (HAVE_CAMV4L2) || defined (HAVE_CAMV4L2) from line 174 allowed me to compile.

Answer 4

V4l support has been removed in recent kernel versions (including Ubuntu 11.04).

EDIT . Your question is related to the message that was sent to the OpenCV user group, which has instructions for compiling OpenCV 2.2 in Ubuntu 11.04. Your approach is not perfect.

Answer 5

for CMake remove / disable variables with_libv4l with_v4l if you do not need this library.