linux-kernel - Re: [PATCH v4 00/17] media: blackfin: bfin

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Date:	Tue, 5 May 2015 11:13:54 +0100
From:	"Lad, Prabhakar" <prabhakar.csengg@...il.com>
To:	Scott Jiang <scott.jiang.linux@...il.com>
Cc:	Hans Verkuil <hverkuil@...all.nl>,
	LMML <linux-media@...r.kernel.org>,
	adi-buildroot-devel@...ts.sourceforge.net,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 00/17] media: blackfin: bfin_capture enhancements

Hi Scott,

On Tue, May 5, 2015 at 10:58 AM, Scott Jiang
<scott.jiang.linux@...il.com> wrote:
> 2015-04-24 18:04 GMT+08:00 Hans Verkuil <hverkuil@...all.nl>:
>> On 04/10/2015 12:42 PM, Scott Jiang wrote:
>>> Hi Hans,
>>>
>>>>>
>>>>> Hans, I tried to use v4l2-compliance but it failed to compile. Sorry
>>>>> for telling you it have passed compilation because I forgot to use
>>>>> blackfin toolchain.
>>>>> ./configure --without-jpeg  --host=bfin-linux-uclibc --disable-libv4l
>>>>>
>>>>> The main problem is there is no argp.h in uClibc, how to disable checking this?
>>>>>
>>>>> checking for argp.h... no
>>>>> configure: error: Cannot continue: argp.h not found
>>>>>
>>>>> Scott
>>>>>
>>>>
>>>> Hi Scott,
>>>>
>>>> Can you try this patch for v4l-utils? It makes argp optional, and it should
>>>> allow v4l2-compliance to compile with uclibc (unless there are more problems).
>>>>
>>>> I'm no autoconf guru, so I'm not certain if everything is correct, but it
>>>> seemed to do its job when I remove argp.h from my system.
>>>>
>>>
>>> Yes, I can pass configure now. But there is another error when make
>>>
>>> make[3]: Entering directory
>>> `/home/scott/projects/git-kernel/v4l-utils/lib/libdvbv5'
>>>   CC     libdvbv5_la-parse_string.lo
>>> parse_string.c:26:19: error: iconv.h: No such file or directory
>>> parse_string.c: In function 'dvb_iconv_to_charset':
>>> parse_string.c:316: error: 'iconv_t' undeclared (first use in this function)
>>>
>>> I tried to pass this library, while --without-libdvbv5 is not supported.
>>>
>>
>> If you can pass the configure step, then you should be able to run this:
>>
>> cd utils/v4l2-compliance
>> cat *.cpp >x.cpp
>> g++ -o v4l2-compliance x.cpp -I . -I ../../include/ -DNO_LIBV4L2
>>
>> (you need to use the right toolchain here, of course)
>>
>> If this compiles OK, then you have a v4l2-compliance tool that you can
>> use.
>>
> Yes, this method works. The test results of v4l2-compliance are below,
> I'm sorry the kernel has not upgraded to 4.0.
> root:/> ./v4l2-compliance -d 0

v4l2-compliance with -s option would interesting to watch.

Cheers,
--Prabhakar Lad
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