Date: Fri, 13 Jul 2007 15:11:42 -0500 From: Tim Daneliuk <tundra@tundraware.com> To: Alex Zbyslaw <xfb52@dial.pipex.com> Cc: freebsd-questions@freebsd.org Subject: Re: Finally Converting From Bind 8 -> Bind 9 Message-ID: <4697DC7E.7000809@tundraware.com> In-Reply-To: <4697AE4C.8070909@dial.pipex.com> References: <468972C5.9090902@tundraware.com> <200707021722.05724.josh@tcbug.org> <4697A498.5000501@tundraware.com> <4697AE4C.8070909@dial.pipex.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Alex Zbyslaw wrote: > Tim Daneliuk wrote: > >> 2) Better still is there some sort of "include" mechanism where I could >> keep a flat file of public host information for use by db.external, >> but include it into db.internal. > > I don't think there is, but let someone who uses bind more than I do > give a definitive on that :-) > > What you *can* do, irrespective of bind version, is to have two files > which you pre-process with m4, and have a third file which m4 includes > on both the others. > > So you start with: > > internal.M4 which includes "shared" > external.M4 which also includes "shared" > shared which gets included in the other two. > > Then m4 internal.M4 > internal and m4 external.M4 -> external. > > Bind then loads internal and external. A reasonable and very Unix-ish solution, certainly. Though, I think the subsequent post on this thread regarding $INCLUDE is probably more elegant ;) > > Alternatively you could start with one M4 file which uses lots of ifdefs > for the non-shared portions. The create internal and external by > specifying different definitions to m4. e.g. m4 -D _TYPE=EXTERNAL or m4 > -D _TYPE=INTERNAL. > > For a problem with small differences between two files, this is a better > solution, but not what I'd do in this case. Me either - conditional content gets clumsy to maintain in a big hurry. > > Whole process can be easily controlled with a Makefile (including any > restarts). > > --Alex > > -- ---------------------------------------------------------------------------- Tim Daneliuk tundra@tundraware.com PGP Key: http://www.tundraware.com/PGP/
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4697DC7E.7000809>