Re: Some basic questions

[John Lumby <johnlumby@hotmail.com>]

To install kernel headers from your own kernel tree:

  . first build them  -
     #  assuming current working dir is the top of your kernel build
INSTALL_HDR_PATH=$PWD/usr make headers_install
    should create a subdirectory path usr/include containing directories 
such as linux video sound asm asm-generic and others

   .  then cd to /usr/include and,  for each directory in 
<kernel>/usr/include,  first rename the one in /usr/include,  then copy 
(or symlink it if it will always be accessible) the one under the kernel 
tree.

On 08/12/11 23:33, Frank W. Miller wrote:
> Thanks Allin!  Very helpful, or at least, I'll let you know...  ;)
>
> One question, I have the 2.6.39.2 kernel tree that I'm building for my
> little project.  How do I point the udev build at the kernel headers in
> that tree, e.g.:
>
> /home/fwmiller/roadrunner/build/linux/include
>
> where "linux" in this path is actually a sym link to a directory called
> linux-2.6.29.2 in the same build/ directory?
>
> Also, can I just do all the --disable-* options to configure?  Is that
> the base implementation?
>
> Thanks,
> FM
>
>
> On Fri, 2011-08-12 at 23:19 -0400, Allin Cottrell wrote:
>> On Fri, 12 Aug 2011, Frank W. Miller wrote:
>>
>>> My next step is to get udev going.  To that end, I've downloaded and
>>> studied to some extent release 172.  I'm using FC12 as my build machine
>>> (e.g. gcc 4.4.2).  This is what I think is supposed to happen, please
>>> correct me if I'm wrong on any of this.
>>>
>>> When I build udev, I do this:
>>>
>>> configure --enable-static
>>>
>>> This is to get the udev binaries to build without needing libraries.
>>> Then:
>>>
>>> make
>>>
>>> I get this:
>>>
>>>   CC     extras/input_id/input_id.o
>>> extras/input_id/input_id.c: In function ‘test_key’:
>>> extras/input_id/input_id.c:173: error: ‘BTN_TRIGGER_HAPPY’ undeclared
>> Your FC12 kernel headers are too old for building udev 172. I
>> believe you'll need at least 2.6.34.
>>
>>> Once I get the binaries built, I'll need to install them and the config
>>> files in the proper places in my USB filesystem correct?
>> Naturally. Though you can reorganize the directory structure if you
>> wish via options to ./configure.
>>
>>> Thanks in advance for any assistance on this.  I'd really like to keep
>>> this as simple as possible.  For example, its not clear to me what
>>> "extras" are and how to turn them off if they are not needed.
>> ./configure --disable-hwdb --disable-introspection \
>> --disable-keymap
>>
>> (and so on). See ./configure --help and
>> http://www.linuxfromscratch.org/lfs/view/development/chapter06/udev.html
>>
>> Allin Cottrell
>
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