[pvrusb2] Failure to compile on FC5 / 2.6.16
Jeff Sadowski
jeff_sadowski at yahoo.com
Sun Apr 9 18:19:37 CDT 2006
Ok thanks mike then probably the best solution is to
ifdef out the
struct msp_matrix
in ivtv/msp3400.h
then it builds with no issues
--- Mike Isely <isely at isely.net> wrote:
>
> Jeff:
>
> The stuff in the ivtv area is really only there for
> older kernel versions,
> where things might be broken or missing. With
> 2.6.16, everything else
> that you need should already be in the kernel tree.
> So don't bother
> building the ivtv area.
>
> -Mike
>
> On Sun, 9 Apr 2006, Jeff Sadowski wrote:
>
> > Well I modified the headerfile in the kernel and
> just
> > took out the structure it was complaining about
> and
> > everything built just fine. But then I went to
> compile
> > ivtv and wow everything in there is broken
> > I was modifying it to get it to compile mostly by
> > removing .name and .flag and looking up the I2C
> > defines I finally got it to compile but that
> wasn't
> > good enough :-( I'll try a few other things before
> bed
> > and see what else I can discover hmm
> >
> > --- Jeff Sadowski <jeff_sadowski at yahoo.com> wrote:
> >
> >> I'll try a build tonight or tomorrow and I'll see
> >> what happens I just upgraded to FC5 it could be
> gcc
> >> 4.1.0 too and thats what I suspect
> >>
> >> Mike Isely <isely at isely.net> wrote:
> >> Robert:
> >>
> >> I got a clean build here using vanilla kernel
> >> 2.6.16.1. So....
> >>
> >> I think I might know what is going on here and
> >> you're probably not going
> >> to want to hear it :-(
> >>
> >> There are various APIs that have been getting
> >> thrashed / changed etc in
> >> each version of the kernel. Some changes have
> been
> >> in V4L while others
> >> have been in the kernel itself. An out-of-tree
> >> driver like this one has
> >> only a single defense against this - by
> implementing
> >> conditionally
> >> compiled code that conditions itself on the
> kernel
> >> version against which
> >> the driver is being compiled. That works well
> for
> >> vanilla kernels.
> >> However when a distribution vendor back-ports
> >> changes between different
> >> versions of the kernel then you can get problems
> >> where such a change might
> >> subtlely change an API and then compilation
> breaks.
> >> I think that might be
> >> the case here.
> >>
> >> I am pretty sure that the msp_matrix structure in
> >> fact did recently move
> >> around a bit in the 2.6.16 timeframe.
> >>
> >> I can't get into the business of identifying
> >> distro-specific versions and
> >> modifying the driver to adapt to stuff like that.
> >> I'm not a Fedora user
> >> so there's no way I can test this sort of thing.
> >> Also if I were to try to
> >> support Fedora in this way, then where does it
> stop?
> >> The burden of having
> >> to test compile against each possible kernel
> variant
> >> can be overwhelming.
> >> I have a hard enough time just testing compiling
> >> against 4-6 kernel
> >> versions for each snapshot - and if you look at
> the
> >> change history you'll
> >> see I've failed in that regard multiple times...
> >>
> >> Is there any chance you can switch to a vanilla
> >> kernel from kernel.org?
> >> Failing that you might be able to take some stabs
> at
> >> various other FC
> >> derived kernels. You could also just try to edit
> >> the driver sources and
> >> if you want to send me a patch I'll look at it -
> but
> >> I can't promise I'll
> >> include it if it might be hazardous to the
> vanilla
> >> kernels. Also in any
> >> case even if I apply such a patch I can't support
> it
> >> or guarantee that it
> >> will continue to build correctly in the future.
> >>
> >> I'm not trying to be a pain; it's just that
> there's
> >> a limit to how many
> >> kernel variants I can juggle here and still have
> >> time left to actually
> >> improve the driver :-(
> >>
> >> -Mike
> >>
> >>
> >> On Fri, 7 Apr 2006, Robert Kulagowski wrote:
> >>
> >>> I think I read everything on the web page and
> >> didn't see any mention of
> >>> this issue:
> >>>
> >>> $ pwd
> >>> /home/mythtv/pvrusb2-mci-20060329/driver
> >>> $ make
> >>> make INSTALL_MOD_DIR=pvrusb2 -C
> >> /lib/modules/2.6.16-1.2080_FC5smp/source
> >>> M=/home/mythtv/pvrusb2-mci-20060329/driver
> >> CONFIG_VIDEO_PVRUSB2=m modules
> >>> make[1]: Entering directory
> >> `/usr/src/kernels/2.6.16-1.2080_FC5-smp-i686'
> >>> CC [M]
> >>
> >
>
/home/mythtv/pvrusb2-mci-20060329/driver/pvrusb2-audio.o
> >>> In file included from
> >>>
> >>
> >
>
/home/mythtv/pvrusb2-mci-20060329/driver/pvrusb2-audio.c:36:
> >>> include/media/v4l2-common.h:124: error:
> >> redefinition of âstruct msp_matrixâ
> >>> make[2]: ***
> >>
> >
>
[/home/mythtv/pvrusb2-mci-20060329/driver/pvrusb2-audio.o]
> >>> Error 1
> >>> make[1]: ***
> >>
> [_module_/home/mythtv/pvrusb2-mci-20060329/driver]
> >> Error 2
> >>> make[1]: Leaving directory
> >> `/usr/src/kernels/2.6.16-1.2080_FC5-smp-i686'
> >>> make: *** [modules] Error 2
> >>>
> >>> _______________________________________________
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> >>> pvrusb2 at isely.net
> >>>
> >>
> >
>
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> >>>
> >>
> >> --
> >> | Mike Isely
> >> | PGP fingerprint
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> com
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> >> |
> >>
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