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Date: Wed, 25 Mar 2015 07:43:30 +0100
From: Andrzej Tobola <ato@iem.pw.edu.pl>
To: Julian Elischer <julian@freebsd.org>
Subject: Re: patch to bsd.ports.mk to support out-of-tree patches.
Message-ID: <20150325064330.GA32672@amp.iem.pw.edu.pl>
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Cc: ports@freebsd.org, Devin Teske <dteske@FreeBSD.org>
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On Tue, Mar 24, 2015 at 01:33:15PM +0800, Julian Elischer wrote:
> Hi, I've a need to keep soe changes outside of the ports tree, to 
> allow me to tailor
> our installs. I could use the "EXTRA_PATCHES" setting, but I'd have to 
> outline the
> patches every time and keep track of them one by one.

I am using (from a long time) union-mount of local /usr/local/ports over
ports tree:

  % mount | grep ports
  /ftp/pub/BSD/FreeBSD/GIT/ports on /usr/ports (nullfs, read-only)
  <above>:/usr/local/ports on /usr/ports (unionfs, read-only)

  % grep ports /etc/fstab
  /ftp/pub/ports  /usr/ports      nullfs  noauto,ro               0 0
  /usr/local/ports /usr/ports     unionfs noauto,ro               0 0

Simple and effective.
I am using Makefile.local to add local Makefile extensions


cheers,
-a