[yocto] What's the purpose of "BDIR" in oe-buildenv-internal?

[Robert P. J. Day]

On Thu, 27 Oct 2011, Scott Garman wrote:

> On 10/27/2011 01:27 PM, Robert P. J. Day wrote:
> > prepping to give a yocto talk to my local (ottawa) LUG next week,
> > and was reviewing the logic of the setup starting with
> > oe-init-build-env, and noticed in scripts/oe-buildenv-internal a
> > test of the variable BDIR for the name of the build directory. but
> > there's no mention of that variable in the calling
> > oe-init-build-env, and i see no mention of it in the intro-level
> > docs.
> >
> > clearly, one could use that shell env variable if one wanted to
> > name the build directory to be used, but given that there's
> > absolutely no explanation of it anywhere for a new user, what
> > exactly is its purpose?
>
> This allows you to specify a build directory that lives elsewhere on
> your filesystem, rather than in poky/build. This is handy in case
> you want to keep the build system source tree pristine.
>
> Simply source the build init script with the desired build directory
> as an argument. I'm quite sure we have this documented, although
> BDIR isn't explicitly mentioned.

  that's the point i was raising -- that variable's value is obvious,
it's just not described anywhere i noticed.

rday

-- 

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
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