On 29 January 2017 at 15:32, 慕冬亮 <mudongliangabcd@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@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@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

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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.