Bug#788709: FTBFS on kfreebsd-* open.c:46:28: error: '__FreeBSD_version' undeclared (first use in this function)

[Benjamin Kaduk]

On Mon, 15 Jun 2015, Steven Chamberlain wrote:
>
> It's slightly awkward because FreeBSD itself doesn't seem to define
> __FreeBSD_kernel_version, though we should probably suggest it.

I somehow remember having seen this be suggested, but am failing to find a
record of it.

-Ben