[Syslog-ng-maintainers] Bug#949847: syslog-ng FTBFS: configure: error: syslog-ng requires bison 3.4 or later

[Adrian Bunk]

On Sun, Feb 09, 2020 at 09:54:49AM +0100, Andreas Henriksson wrote:
>...
> Personally I'm not familiar with exprission like '@<:@^0-9.@:>@*'
> and where they are documented. Using codesearch.debian.net[1] they
> show up in many places not only for sed, but also passed to grep,
> tr, etc. If someone knows where these expressions are documented
> please tell me. Maybe the problem is in some underlying component
> rather than syslog-ng.
>...

The Ubuntu diff (linked from tracker) seems to workaround it by
removing the problematic check.

cu
Adrian