I figured this out in the end.

By default it looks like Fido, and at least the releases from Dizzy on
build Berkeley db version 6.  Python 2.7 needs db version 5 in order to
build all of the components for python-bsddb.  If you build using db
version 6, there aren't any warning messages that get propagated to the
user, and you end up with a non-working version of the python database
binding.  That's frustrating, but I expect has been fixed in Python 3.x.  I
haven't tried.

Anyway, the fix in my case was just to change the preferred version of db,
and rebuild my image.
Adding PREFERRED_VERSION_db = "5.3.28" to my local.conf file did the trick.

On Wed, Jul 22, 2015 at 10:15 AM, Maxwell Bottiger <
sleepyli...@jive-turkey.net> wrote:

> Hi,
>
> I'm trying to build python in yocto, and I'm hung up on a missing
> library.  I've built python-bsddb, and I see all of the .py and .pyc
> libraries, but I don't have _bsddb.so in lib-dynload.  I see the
> python-2.7-mainfest.inc either installs it or expects to install it, but I
> can't get anything to build it.
>
> Does anyone know how to generate _bsddb.so?
>
> -Max
>
-- 
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