From: "Eren Türkay" <eren@hambedded.org>
To: Biao <huanmateme@163.com>
Cc: yocto@yoctoproject.org
Subject: Re: Where does the bitbake get the variable "TOPDIR"
Date: Mon, 17 Dec 2012 17:37:52 +0200 [thread overview]
Message-ID: <20121217153752.GA5124@gmail.com> (raw)
In-Reply-To: <23bf4f1e.c486.13ba81d3be7.Coremail.huanmateme@163.com>
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On Mon, Dec 17, 2012 at 05:06:26PM +0800, Biao wrote:
> Greetings,
>
> I am a newbie tying to understand how bitbake works.
> There is one line as BBPATH = "${TOPDIR}" in the mybuild/conf/bblayers.conf, i would like to know where the TOPDIR is defined?
It's defind in "lib/bb/parse/parse_py/ConfHandler.py:36". When TOPDIR is
not defined in any of the bitbake configuration files, it's set to
current working directory automatically.
(...)
def init(data):
topdir = data.getVar('TOPDIR')
if not topdir:
data.setVar('TOPDIR', os.getcwd())
(...)
You may want to read the newly-written documentation about bitbake and
open embedded. I tried to explain how things fit together. I would like
to have your feedback.
http://hambedded.org/blog/2012/11/24/from-bitbake-hello-world-to-an-image/
--
. 73! DE TA1AET
http://linkedin.com/in/erenturkay
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next prev parent reply other threads:[~2012-12-17 15:38 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-17 9:06 Where does the bitbake get the variable "TOPDIR" Biao
2012-12-17 9:47 ` Biao
2012-12-17 15:37 ` Eren Türkay [this message]
2012-12-18 12:28 ` Biao
2012-12-18 13:18 ` Bill Traynor
2012-12-18 16:35 ` Eren Türkay
2012-12-20 6:37 ` Biao
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