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From: Richard Purdie <richard.purdie@linuxfoundation.org>
To: Robert Yang <liezhi.yang@windriver.com>
Date: Wed, 15 Aug 2012 14:42:36 +0100
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Cc: bitbake-devel@lists.openembedded.org, Zhenfeng.Zhao@windriver.com
Subject: Re: [PATCH 1/1] bitbake.conf: add BB_STAMPS_DIR for constructing STAMP
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On Fri, 2012-08-10 at 10:02 +0800, Robert Yang wrote:
> Add BB_STAMPS_DIR for constructing STAMP, the defination of STAMP
> before:
> 
> STAMP = "${TMPDIR}/stamps/${MULTIMACH_TARGET_SYS}/${PF}
> 
> We can only change the TMPDIR if we want to change the STAMP's location,
> but the cache would be regenerated if TMPDIR changed, so add
> BB_STAMPS_DIR for constructing it, and add it to the BB_ENV_EXTRAWHITE,
> this is very usefull for the "bitbake -S", since then it can be run by:
> 
> BB_STAMPS_DIR=<path> bitbake -S <recipe>
> 
> which will avoid putting the stamps to ${TMPDIR}/stamps.
> 
> BTW, break the too long BB_ENV_EXTRAWHITE into several lines.
> 
> [YOCTO #1659]
> 
> Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
> ---
>  meta/conf/bitbake.conf       | 3 ++-
>  scripts/oe-buildenv-internal | 5 ++++-
>  2 files changed, 6 insertions(+), 2 deletions(-)

BB_ is a prefix for variables bitbake specifically uses for
configuration. It doesn't fit in this context since its metadata defined
and doesn't actually influence or is used by bitbake itself.

We therefore need to use a different name for this.

Cheers,

Richard