Re: V4L2-based build error
On Mon, 12 May 2008 16:14:09 -0600
Jonathan Corbet <firstname.lastname@example.org> wrote:
> If you configure V4L2 as a module, the config system will still let you
> configure DVB_CORE built-in. This yields:
> drivers/built-in.o: In function `v4l2_i2c_drv_attach_legacy':
> tuner-core.c:(.text+0x901d5): undefined reference to `v4l2_i2c_attach'
> drivers/built-in.o: In function `tuner_command':
> tuner-core.c:(.text+0x91aed): undefined reference to `v4l_printk_ioctl'
> I never had trouble with this before 2.6.26-rc2. I'm happy making
> DVB_CORE modular, but it would be nice if the config system didn't allow
> inconsistent setups.[/color]
I have a number of patches meant to fix several troubles at v4l/dvb
compilation. I intend to send they soon for merging, but I want first to test
some random builds.
> P.S. As I was digging into this, I ran into <media/v4l2-i2c-drv-legacy.h>,
> which takes an interesting approach - function definitions and
> module_init() within a header file? This thing is included in a
> number of places; it seems like there should be a better way...[/color]
This file is meant to be an interim approach to allow a smoothly change from
the old i2c probing way to the newer format. It should be there for some time,
until we can convert all v4l2 drivers to the new approach.
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