[OE-core] how much can bitbake tell me about my upcoming build?
Richard Purdie
richard.purdie at linuxfoundation.org
Tue Mar 27 23:19:27 UTC 2012
On Tue, 2012-03-27 at 17:48 -0400, Robert P. J. Day wrote:
> so, let's say i've decided to use oe-core to build a qemux86 image:
>
> $ . oe-core/oe-init-build-env builds/qemux86
>
> before i go *any* further (before i even decide which image i'm going
> to bake), how much can bitbake tell me about this configuration?
>
> i know
>
> $ bitbake -e
>
> can tell me my current environment, that's certainly useful.
>
> i can also use
>
> $ bitbake -s
>
> to show me the current and preferred versions of all packages (related
> strictly to the current MACHINE setting in local.conf, correct?)
>
> what other info can i get out of bitbake? what about image-specific
> info? is there a way to list the packages required for a given image?
> some equivalent of
>
> $ bitbake -s core-image-sato
>
> what about a command that lists the available images without having
> to peruse the oe-core "images" directories? and what about any of the
> other bitbake-related utilities? i can see "bitbake-layers" being
> pretty useful.
>
> in short, without starting an actual build, how much information can
> i extract using bitbake and bitbake-related utilities?
Well, there are:
bitbake -g (and look at task-depends.dot)
bitbake -g -u depexp
bitbake core-image-sato -n (dry run)
which will give some interesting info.
> p.s. one thing i'd like is to be able to ask how much source i would
> need to download for a given build before i start. is there any way
> to do that?
Not that I'm aware of since the SRC_URIs don't say how big a download
is, nor are they ever likely to.
Cheers,
Richard
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