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Date:      Mon, 8 May 2017 10:17:05 -0700
From:      "Simon J. Gerraty" <sjg@juniper.net>
To:        Konstantin Belousov <kostikbel@gmail.com>
Cc:        "O. Hartmann" <ohartmann@walstatt.org>, FreeBSD CURRENT <freebsd-current@freebsd.org>, <sjg@juniper.net>
Subject:   Re: filemon: weird full-time build although filemon enabled
Message-ID:  <26642.1494263825@kaos.jnpr.net>
In-Reply-To: <20170508162320.GD1622@kib.kiev.ua>
References:  <20170506092255.083828f8@thor.intern.walstatt.dynvpn.de> <16322.1494224695@kaos.jnpr.net> <20170508173709.37e94b17@thor.intern.walstatt.dynvpn.de> <25259.1494259448@kaos.jnpr.net> <20170508162320.GD1622@kib.kiev.ua>

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Konstantin Belousov <kostikbel@gmail.com> wrote:
> If I understand the motto of meta-mode, any file change is detected for any
> file accessed during the build.  All dynamically-linked binary includes
> the rtld into the process image, and rtld reads all config files in the
> libmap.d subdirectories.  The end result is that everything must be rebuild
> if any config file changed.

Ah.

> Then, after the world build, according to OP, the nvidia driver port is
> reinstalled, which installs the nvidia.conf anew, which triggers the
> behaviour on the next build.

Yes, that would account for it.

There are always exceptions - things we expect to be volatile and don't
care - or for any other reason just want to ignore.

bmake has a set of knobs for telling it to ignore things.
OP try

.MAKE.META.IGNORE_PATHS += /usr/local/etc/libmap.d

--sjg



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