On 23.12.2019 18:14, Greg Troxel wrote:
> Warner Losh <imp%bsdimp.com@localhost> writes:
>
>> Just a quick note: when FreeBSD when from 9 to 10, we had to play 'hunt the
>> wumpus' for all the autoconfig scripts that suddenly thought they were
>> configuring for FreeBSD 1.0.
>>
>> If you can arrange it, it might make sense to do a pkgsrc run on an
>> experimental system that has the version as 10.0 rather than 9.9.xx before
>> committing to a schedule given the experience of your sister BSD project.
>
> Thanks, that's a really good point.
>
This issue is well known. Once we will branch -10 we will test it in
HEAD and -10 concurrently.
On the other hand, clang10 broke only a single piece of software that I
build (nodejs).
FreeBSD 10 broke dozens of config scripts that all derived from a common ancestor back in the 90s... though 1.0 FreeBSD needed special treatment for things like a.out and such and the scripts used 1* to match. It would be easy enough to grep for that pattern in gnu software to see if it will trip you up. NetBSDs release version history may be such this isn't an issue, but it broke a heck of a lot than I'd expected at the time...
Warner