sysvinit runlevels

sysvinit runlevels

[E Robertson]

Hi,
I'm building a busybox based distro using busybox init. I notice sysvinit run 
levels unexpectedly showed up my rootfs. Is this normally what it does and I 
need to explicitly remove them? 
Also, I couldn't find the "?=" operation in the bitbake manual so I assumed it 
a condition statement and is overridden of the variable is defined, it this 
true?
Thanks.   

Re: sysvinit runlevels

[Denys Dmytriyenko]

On Mon, Mar 02, 2009 at 03:15:46PM -0600, E Robertson wrote:
> Hi,
> I'm building a busybox based distro using busybox init. I notice sysvinit run 
> levels unexpectedly showed up my rootfs. Is this normally what it does and I 
> need to explicitly remove them? 

AFAIK, runlevels are coming with initscripts package, not sysvinit - you can 
overwrite that with IMAGE_INITSCRIPTS variable. But then you'd have to manage 
startup scripts yourself, as many recipes hook into update-rc.d through 
INITSCRIPT_PARAMS.

> Also, I couldn't find the "?=" operation in the bitbake manual so I assumed it 
> a condition statement and is overridden of the variable is defined, it this 
> true?

Theodore A. Roth is kind enough to help with the documentation. Earlier today 
he sent the patch to the bitbake mailing list with the following text:

Setting a default value (?=)
A ?= "aval"
If A is set before the above is called, it will retain it's
previous value. If A is unset prior to the above call, A will be
set to aval.

-- 
Denys