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91 lines
2.4 KiB
91 lines
2.4 KiB
# Copyright 1999-2018 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# @ECLASS: ruby-single.eclass
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# @MAINTAINER:
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# Ruby team <ruby@gentoo.org>
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# @AUTHOR:
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# Author: Hans de Graaff <graaff@gentoo.org>
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# Based on python-single-r1 by: Michał Górny <mgorny@gentoo.org>
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# @BLURB: An eclass for Ruby packages not installed for multiple implementations.
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# @DESCRIPTION:
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# An eclass for packages which don't support being installed for
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# multiple Ruby implementations. This mostly includes ruby-based
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# scripts. Set USE_RUBY to include all the ruby targets that have been
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# verified to work and include the eclass. RUBY_DEPS is now available to
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# pull in the dependency on the requested ruby targets.
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#
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# @CODE
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# USE_RUBY="ruby20 ruby21"
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# inherit ruby-single
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# RDEPEND="${RUBY_DEPS}"
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# @CODE
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case "${EAPI:-0}" in
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0|1|2|3)
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die "Unsupported EAPI=${EAPI:-0} (too old) for ${ECLASS}"
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;;
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4|5|6|7)
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;;
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*)
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die "Unsupported EAPI=${EAPI} (unknown) for ${ECLASS}"
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;;
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esac
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if [[ ! ${_RUBY_SINGLE} ]]; then
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inherit ruby-utils
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# @ECLASS-VARIABLE: USE_RUBY
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# @DEFAULT_UNSET
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# @REQUIRED
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# @DESCRIPTION:
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# This variable contains a space separated list of targets (see above) a package
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# is compatible to. It must be set before the `inherit' call. There is no
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# default. All ebuilds are expected to set this variable.
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# @ECLASS-VARIABLE: RUBY_DEPS
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# @DEFAULT_UNSET
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# @DESCRIPTION:
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#
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# This is an eclass-generated Ruby dependency string for all
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# implementations listed in USE_RUBY. Any one of the supported ruby
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# targets will satisfy this dependency. A dependency on
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# virtual/rubygems is also added to ensure that this is installed
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# in time for the package to use it.
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#
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# Example use:
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# @CODE
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# RDEPEND="${RUBY_DEPS}
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# dev-foo/mydep"
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# BDEPEND="${RDEPEND}"
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# @CODE
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#
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# Example value:
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# @CODE
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# || ( dev-lang/ruby:2.0 dev-lang/ruby:1.9 ) virtual/rubygems
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# @CODE
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#
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# The order of dependencies will change over time to best match the
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# current state of ruby targets, e.g. stable version first.
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_ruby_single_implementations_depend() {
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local depend
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for _ruby_implementation in ${RUBY_TARGETS_PREFERENCE}; do
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if [[ ${USE_RUBY} =~ ${_ruby_implementation} ]]; then
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depend="${depend} $(_ruby_implementation_depend $_ruby_implementation)"
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fi
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done
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echo "|| ( ${depend} ) virtual/rubygems"
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}
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_ruby_single_set_globals() {
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RUBY_DEPS=$(_ruby_single_implementations_depend)
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}
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_ruby_single_set_globals
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_RUBY_SINGLE=1
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fi
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