[yocto] How to specify a default value for a variable in a recipe

[Patrick Doyle]

On Fri, Jun 13, 2014 at 10:13 AM, Gary Thomas <gary at mlbassoc.com> wrote:
> Any time you need to set the variable outside of the recipe itself (.bb* or
> .inc),
> then you need the _pn-${recipe} syntax.
Ahhh…. that's good to know.

I keep wanting to understand the scope rules of bitbake.  This helps.

Thanks Gary.

--wpd