[Buildroot] [git commit master 1/1] initramfs: update help text

[Grant Edwards <grant.b.edwards@gmail.com>]

On 2010-06-27, Thomas Petazzoni <thomas.petazzoni@free-electrons.com> wrote:
> On Sun, 27 Jun 2010 08:22:56 +0200
> Peter Korsgaard <jacmet@uclibc.org> wrote:
>
>> No, but you could extract the tarball (as root or using fakeroot) and
>> point CONFIG_INITRAMFS_SOURCE to it.
>> 
>> But yes, providing a way to generate the cpio archive without building a
>> kernel would be nicer.
>
> Well, a cpio archive can be generated by Buildroot without having to
> build a kernel, see fs/cpio/Config.in. What Grant was complaining about
> originally was the fs/initramfs case. However, last time I tried
> pointing CONFIG_INITRAMFS_SOURCE to a cpio archive, it didn't work.

I tried it, and it appeared to build OK -- but I haven't had a chance
to test the resulting image.

> Instead of my original solution, another solution would be to *not*
> make initramfs depend on BR2_LINUX_KERNEL, and to remove the
> dependency initramfs->kernel so that the kernel doesn't try to be
> built as soon as initramfs is selected. If kernel is selected, it
> will anyway be built *before* going through the initramfs code.
>
> Would this be ok ?

That would be fine for me, but if somebody is building both rootfs and
kernel, the initramfs source list (or the cpio archive) needs to be
built before the kernel.

-- 
Grant