[OE-core] [PATCH] bitbake: do not set CCACHE_DISABLE=0

[Enrico Scholz]

Richard Purdie
<richard.purdie-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r at public.gmane.org>
writes:

>> ccache checks for existence of environment; not for its value:
>> ...
>> Hence, avoid setting of $CCACHE_DISABLE instead of assigning '0'.
>
> Why doesn't CCACHE_DISABLE[unexport] = "1" help here?

You mean, keeping the

 | export CCACHE_DISABLE ??= "${@[0,1][d.getVar('CCACHE', True) == '']}"

and requesting explicitly that user specifies

 | CCACHE_DISABLE[unexport] = "1"

in his .conf?  Sounds hacky and inconsistent and makes it impossible to
set CCACHE_DISABLE by external environment.


> Doesn't the unexport flag stop this entering the environment?

Perhaps.  In the current bitbake, 'unexport' takes precedence over
'export'.  But is this specified somewhere and will perhaps be changed
in a later version.



Enrico