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# $NetBSD: license.mk,v 1.3 2007/07/06 01:22:40 rillig Exp $
#
# Note: This file is in draft state and not yet actively used.
#
# This file handles everything about the LICENSE variable. It is
# included automatically by bsd.pkg.mk.
#
# XXX: Some of this content arguably belongs in the pkgsrc guide
# instead.
#
# === User-settable variables ===
#
# ACCEPTABLE_LICENSES
# If a package declares a license and that license is not a
# member of the list defined by this variable, pkgsrc will
# refuse to build the package.
#
# XXX: pkg_install should also check LICENSE and decline to
# install if it is not in ACCEPTABLE_LICENSES.
#
# XXX: Perhaps there should be some mechanism to prevent running
# programs that are part of packages that declare LICENSEs that
# are not in ACCEPTABLE_LICENSES or some per-user variable.
# This is surely controversial and requires discussion.
#
# To include the default licenses, you can use the += operator
# in mk.conf. To override it, use the plain = operator.
#
# Default value: ${DEFAULT_ACCEPTABLE_LICENSES}
#
# === Package-settable variables ===
#
# LICENSE
# The license of the package.
#
# When the package has multiple licenses, there are many different
# cases. Some packages use an OR-combination, while others use an
# AND-combination. Currently, pkgsrc can only handle a single
# license per package. For now, add a description of the licensing
# to ../doc/TODO, section "Licenses of packages". Note that in
# such cases, one can place the text of both licenses in
# licenses/foo-license and reference it.
#
# Every package should specify its license. (Prior to July 2007,
# Open Source and Free software did not have license tags.)
#
# The common licenses are collected in the licenses/ subdirectory
# of pkgsrc. Additionally, the following licenses are valid:
#
# * GPL2: The GNU General Public License, Version 2
# * LGPL2: The GNU Library General Public License, Version 2
# * BSD-3: The license from UCB without the advertising clause
# * BSD-4: The license from UCB including the advertising clause
# * Apache-2.0: Apache License, Version 2.0
# * CDDL: Common Development and Distribution License, Version 1.0
#
# TODO:
# * GPL3
#
# === Predefined variables ===
#
# DEFAULT_ACCEPTABLE_LICENSES
# The list of licenses that before July,
# 2007 did not require tagging because they were Open Source or
# Free. The intent is to make it contain licenses that are Open
# Source or Free and not controversial, so as to provide a
# default that is pleasing to a large number of people.
#
# === See also ===
#
# ../doc/TODO, section "Licenses of packages"
#
.if defined(AFTER_2007Q3) && !defined(LICENSE)
PKG_FAIL_REASON+= "[license.mk] Every package must define a license"
LICENSE?= unknown
.endif
DEFAULT_ACCEPTABLE_LICENSES= GPL2 LGPL2 BSD-3 BSD-4 Apache-2.0 CDDL
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