Hello again, Looks like the functions I need - at least some of them - are defined in videobuf-vmalloc.h I still have no idea where to find them - i.e., what to include/install to make them resolve. Boris. On Mon, Jul 23, 2012 at 5:48 PM, Boris Epstein <borepstein at gmail.com> wrote: > Hello all, > > I am trying to install Epiphan's ( http://www.epiphan.com/ ) VGA2USB > device on a Centos 6 machine and when I am trying to compile and install > the driver for it I get the following errors: > > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol videobuf_streamoff > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol videobuf_poll_stream > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol video_ioctl2 > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol videobuf_reqbufs > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol videobuf_dqbuf > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol videobuf_to_vmalloc > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol videobuf_vmalloc_free > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol video_devdata > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol videobuf_stop > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol videobuf_read_stream > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol videobuf_querybuf > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol video_unregister_device > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol videobuf_qbuf > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol video_register_device > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol videobuf_iolock > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol videobuf_streamon > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol videobuf_queue_vmalloc_init > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol videobuf_mmap_mapper > WARNING: /lib/modules/2.6.32-279.2.1.el6.x86_64/extra/vga2usb.ko needs > unknown symbol videobuf_mmap_free > > Does anybody happen to know which library I need to install to get these > functions? > > Thanks. > > Boris. >