How do you generate the config file?

[Abel]

I've posted a mail with the screenshot (waiting for moderation) when I try
to boot from make defconfig built kernel. Basically the kernel doesn't boot
because "Missing modules (cat /proc/modules; ls /dev " it says...It's the
same screen that appeared when I tried using make oldconfig pressing enter
for default values.

I tried using make localmodconfig but It again asks for many config params
that I don't know anything about.

Saludos,

*                                                        Abel.*

On 30 January 2017 at 01:11, Abel <akronix5 at gmail.com> wrote:

> Hi.
>
> I just built using make defconfig and it, again, doesn't boot. Instead it
> displays the error that I've described before (sorry I forgot to attach the
> screenshot, I attach it here).
>
> As I already stated, neither /boot/${uname -r} nor make oldconfig work for
> me, they both show the screen above.
>
> Saludos,
>
> *                                                        Abel.*
>
> On 30 January 2017 at 01:08, Guru Das S <gurooodas at gmail.com> wrote:
>
>> On 29 January 2017 at 15:32, 慕冬亮 <mudongliangabcd at gmail.com> wrote:
>> > Hello,
>> >     If you want to reuse the config of current kernel, you can use
>> > `make oldconfig` to generate config file.
>> >
>> > --
>> > My best regards to you.
>> >
>> >      No System Is Safe!
>> >      Dongliang Mu
>> >
>> > 2017-01-29 18:24 GMT-05:00 Ozgur Karatas <mueddib at goosey.org>:
>> >>
>> >> Hello,
>> >>
>> >> you can get .config files in two ways, firstly get the existing
>> .config file
>> >> and compile to kernel.
>> >>
>> >> $ cp /boot/config-x.x.x /bla/linux/.config
>> >>
>> >> Second, use the generate command:
>> >>
>> >> $ make defconfig
>> >>
>> >> Regards,
>> >>
>> >> ~Ozgur
>> >>
>> >> 30.01.2017, 01:18, "Abel" <akronix5 at gmail.com>:
>> >>
>> >> Hi!
>> >>
>> >> Where do you get the config file from? or do you generate it yourself?
>> >>
>> >> I'm using xUbuntu 16.04 in a VM inside VMWare, following the
>> instructions
>> >> described in kernelnewbies wiki. (By the way, the download links to
>> the iso
>> >> images of Ubuntu don't work for me)
>> >>
>> >> If I copy the latest config file in /boot, kernel 4.4.0, it starts to
>> ask me
>> >> many config parameters that I don't know what to answer. I tried to
>> press
>> >> always <enter> to set up the default parameters, but after compiling I
>> get
>> >> an error trying to boot from that kernel (see atachment).
>> >>
>> >> I tried with make menuconfig and that seems to work, but it takes too
>> long
>> >> because it builds and includes many many drivers modules.
>> >> Yeah, I know I could navigate through the ncurses window and select the
>> >> stuff I want and deselect what I don't want, but I'd rather prefer
>> just a
>> >> simple config file that builds and works and don't waste time in
>> >> understanding all the stuff that it's in there.
>> >>
>> >> So, isn't there a way to get a simple config file just to develop
>> kernel
>> >> stuff for an Ubuntu image?
>> >> I've even gone to the kernel ppa sources for Ubuntu:
>> >> http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.9.5/; but it only
>> provides
>> >> a patch using the debian config files (which don't come from git
>> sources of
>> >> course).
>> >>
>> >> I just want a config file, copy it to the kernel root code and compile.
>> >>
>> >> Greetings,
>> >>
>> >>                                                        Abel
>> >>
>> >>
>> >> _______________________________________________
>> >> Kernelnewbies mailing list
>> >> Kernelnewbies at kernelnewbies.org
>> >> https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>> >>
>> >
>> > _______________________________________________
>> > Kernelnewbies mailing list
>> > Kernelnewbies at kernelnewbies.org
>> > https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>>
>> Hi Abel,
>>
>> To add to what Ozgur said, you may first copy the existing .config
>> file that comes along with your Linux distribution to your kernel
>> tree, and then use:
>>
>> $ make localmodconfig
>>
>> instead of defconfig. A quick Google search should tell you the
>> differences between the two - and from what I've read, localmodconfig
>> is preferred to defconfig.
>>
>> Hope this helps.
>>
>>
>> Guru Das Srinagesh.
>>
>
>
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