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Date: Tue, 7 Feb 2006 22:53:32 -0500
From: David Scheidt <dscheidt@panix.com>
To: Norberto Meijome <freebsd@meijome.net>
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Cc: martinko <martinkov@pobox.sk>, freebsd-questions@freebsd.org
Subject: Re: FreeBSD Ports vs. Gentoo Portage (a matter of concept)
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On Wed, Feb 08, 2006 at 11:04:23AM +1100, Norberto Meijome wrote:
> 
> interesting. Is there anywhere one can read about these things, ie,
> about where and how USE_* are used/ defined, WITH_, etc. ... and how to
> compile a list of available (USE|WITH)_* and their meaning (grep -r
> USE|WITH /usr/ports/*/*/Makefile ?? )... so far i've been using the
> @freebsd.org lists to do this, but it's rather unreliable and unsystematic

Start with /usr/ports/Mk/bsd.port.mk  and if you're ears aren't
bleeding, work out from there.  That defines (nearly) all the USE_ and
WANT_.  WITH_ and WITHOUT_ are port specific, though there are some
that are used in multiple places.  Those are defined by an OPTIONS
directive in the individual port makefile like this:

OPTIONS=      FOO  "Description of foo" off \
	BAR			"Descprtion of bar" on

	Where FOO or BAR is the option name, then a description, then a
	default state.  


David