Debian8上的v4l2构建错误

Question

我正在按照以下步骤安装video 4 linux，

http://www.linuxtv.org/wiki/index.php/How_to_Obtain,_Build_and_Install_V4L-DVB_Device_Drivers

但在构建时，会出现以下错误。Debian 8虚拟机。

...
    CC [M]  /media_build/v4l/saa7164-buffer.o
    CC [M]  /media_build/v4l/saa7164-encoder.o
    /media_build/v4l/saa7164-encoder.c: In function 'saa7164_s_frequency':
    /media_build/v4l/saa7164-encoder.c:392:2: error: assignment of read-only variable '__val'
      port->freq = clamp(f->frequency,
      ^
    /usr/src/linux-headers-3.16.0-4-common/scripts/Makefile.build:262: recipe for target '/media_build/v4l/saa7164-encoder.o' failed
    make[5]: *** [/media_build/v4l/saa7164-encoder.o] Error 1
    /usr/src/linux-headers-3.16.0-4-common/Makefile:1350: recipe for target '_module_/media_build/v4l' failed
    make[4]: *** [_module_/media_build/v4l] Error 2
    Makefile:181: recipe for target 'sub-make' failed
    make[3]: *** [sub-make] Error 2
    Makefile:8: recipe for target 'all' failed
    make[2]: *** [all] Error 2
    make[2]: Leaving directory '/usr/src/linux-headers-3.16.0-4-686-pae'
    Makefile:51: recipe for target 'default' failed
    make[1]: *** [default] Error 2
    make[1]: Leaving directory '/media_build/v4l'
    Makefile:26: recipe for target 'all' failed
    make: *** [all] Error 2
    build failed at ./build line 491.
    root@debian:/media_build#

Answer 1

看看这个，这里是the link，这是不同的内核编译日志，所以你可以安装成功版本的内核，然后清理编译字典，重新编译它。

我想它可以解决你的问题。

在我的Ubuntu14.04.3 x86_64案例中，我安装了Kernel3.18.7，下面是解决方案

 $ cd /tmp

 $ wget \
 kernel.ubuntu.com/~kernel-ppa/mainline/v3.18.7-vivid/linux-headers-3.18.7-031807_3.18.7-031807.201502110759_all.deb \
 kernel.ubuntu.com/~kernel-ppa/mainline/v3.18.7-vivid/linux-headers-3.18.7-031807-generic_3.18.7-031807.201502110759_amd64.deb \
 kernel.ubuntu.com/~kernel-ppa/mainline/v3.18.7-vivid/linux-image-3.18.7- 031807-generic_3.18.7-031807.201502110759_amd64.deb

 $ sudo dpkg -i linux-headers-3.18*.deb linux-image-3.18*.deb

 $ sudo reboot

参考链接

• How to install Kernel 3.18.7 on 64 bit Ubuntu 14.10, Ubuntu 14.04 and derivative systems:

Answer 2

我也有同样的问题，我的变通方法是在v4l/.config文件中设置CONFIG_VIDEO_SAA7164=n。在此之后，编译被正确执行。

Answer 3

运行make menuconfig并导航菜单，从构建中禁用saa7164驱动程序。层次结构应该类似于DEVICE DRIVERS -> MULTIMEDIA DRIVERS -> VIDEO4LINUX / DVB driver -> PCI板(我不认为PCIe有单独的子菜单)，然后禁用saa7164的驱动程序。