Re: [PATCH] hand the TEMPLATECONF local over to setup-builddir

[Gary Thomas <gary@mlbassoc.com>]

On 2015-09-22 14:25, Lee Nipper wrote:
> On Tue, Sep 22, 2015 at 1:45 PM, Marcus Müller <marcus.mueller@ettus.com <mailto:marcus.mueller@ettus.com>> wrote:
>
>     Hello,
>     > If I understand correctly it allows a user prepared $TEMPLATECONF
>     > directory
>     > to be used by oe-setup-builddir.
>     Indeed; the point is that oe-setup-builddir was definitely meant to be
>     used with a TEMPLATECONF set by the user; in bash, the TEMPLATECONF
>     local variable is automatically passed on from oe-init-build-env to
>     oe-setup-builddir¹, but in zsh, this doesn't work without explicitely
>     declaring that should happen (which is the only thing my patch does).
>
>     Best regards,
>     Marcus
>
>     ¹ not quite sure how; it's a local to the calling script and shouldn't
>     be a local or env variable to the callee, IMHO.
>
>
>
> Hello Marcus,
>
> FWIW, I did some test cases to understand the differences.
>
> With bash 4.3.11, and the examples below,
> cases A and B will pass along TEMPLATECONF, but case C does not.
> Your patch makes case C work as well.
>
> # A:
>
> TEMPLATECONF=$HOME/my-template-dir source ~/openembedded-core/oe-init-build-env $HOME/my-build-dir
>
> # B:
> export TEMPLATECONF=$HOME/my-template-dir; source ~/openembedded-core/oe-init-build-env $HOME/my-build-dir
>
> # C:
> TEMPLATECONF=$HOME/my-template-dir; source ~/openembedded-core/oe-init-build-env $HOME/my-build-dir
>
>
> And with zsh 5.0.2, case B will pass along TEMPLATECONF, but cases A and C do not.
> Your patch makes cases A and C work as well with zsh.
>
> I did not expect case A to be different than case C for bash, but it apparently works differently than I thought.

This is indeed expected behaviour - environment variables defined
on the command line before the command itself are local to that
command's execution only.

-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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