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+# Copyright 1999-2004 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/eclass/ruby.eclass,v 1.64 2007/04/07 08:52:46 vapier Exp $
+#
+# Author: Mamoru KOMACHI <usata@gentoo.org>
+#
+# The ruby eclass is designed to allow easier installation of ruby
+# softwares, and their incorporation into the Gentoo Linux system.
+
+# src_unpack, src_compile and src_install call a set of functions to emerge
+# ruby with SLOT support; econf, emake and einstall is a wrapper for ruby
+# to automate configuration, make and install process (they override default
+# econf, emake and einstall defined by ebuild.sh respectively).
+
+# Functions:
+# src_unpack	Unpacks source archive(s) and apply patches if any.
+# src_compile	Invokes econf and emake.
+# src_install	Runs einstall and erubydoc.
+# econf		Detects setup.rb, install.rb, extconf.rb and configure,
+#		and then runs the configure script.
+# emake		Runs make if any Makefile exists.
+# einstall	Calls install script or Makefile. If both not present,
+#		installs programs under sitedir.
+# erubydoc	Finds any documents and puts them in the right place.
+#		erubydoc needs more sophistication to handle all types of
+#		appropriate documents.
+
+# Variables:
+# USE_RUBY	Space delimited list of supported ruby.
+#		Set it to "any" if it installs only version independent files.
+#		If your ebuild supports both ruby 1.6 and 1.8 but has version
+#		depenedent files such as libraries, set it to something like
+#		"ruby16 ruby18". Possible values are "any ruby16 ruby18 ruby19"
+# RUBY_ECONF	You can pass extra arguments to econf by defining this
+#		variable. Note that you cannot specify them by command line
+#		if you are using <sys-apps/portage-2.0.49-r17.
+# PATCHES	Space delimited list of patch files.
+
+inherit eutils toolchain-funcs
+
+EXPORT_FUNCTIONS src_unpack src_compile src_install
+
+HOMEPAGE="http://raa.ruby-lang.org/list.rhtml?name=${PN}"
+SRC_URI="mirror://gentoo/${P}.tar.gz"
+
+SLOT="0"
+LICENSE="Ruby"
+
+# If you specify RUBY_OPTIONAL you also need to take care of ruby useflag and dependency.
+if [[ ${RUBY_OPTIONAL} != "yes" ]]; then
+	DEPEND="virtual/ruby"
+fi
+
+RDEPEND="${DEPEND}"
+
+[[ -z "${RUBY}" ]] && export RUBY=/usr/bin/ruby
+
+ruby_patch_mkmf() {
+
+	if [ ! -x /bin/install -a -x /usr/bin/install ]; then
+		einfo "Patching mkmf"
+		cat <<END >${T}/mkmf.rb
+require 'mkmf'
+
+STDERR.puts 'Modified mkmf is used'
+CONFIG['INSTALL'] = '/usr/bin/install'
+END
+		# save it because rubygems needs it (for unsetting RUBYOPT)
+		export GENTOO_RUBYOPT="-r${T}/mkmf.rb"
+		export RUBYOPT="${RUBYOPT} ${GENTOO_RUBYOPT}"
+	fi
+
+}
+
+ruby_src_unpack() {
+	#ruby_patch_mkmf
+	unpack ${A}
+	cd ${S}
+	# apply bulk patches
+	if [[ -n "${PATCHES}" ]] ; then
+		for p in ${PATCHES} ; do
+			epatch $p
+		done
+	fi
+}
+
+ruby_econf() {
+
+	RUBY_ECONF="${RUBY_ECONF} ${EXTRA_ECONF}"
+	if [ -f configure ] ; then
+		./configure \
+			--prefix=/usr \
+			--host=${CHOST} \
+			--mandir=/usr/share/man \
+			--infodir=/usr/share/info \
+			--datadir=/usr/share \
+			--sysconfdir=/etc \
+			--localstatedir=/var/lib \
+			--with-ruby=${RUBY} \
+			${RUBY_ECONF} \
+			"$@" || die "econf failed"
+	fi
+	if [ -f install.rb ] ; then
+		${RUBY} install.rb config --prefix=/usr "$@" \
+			${RUBY_ECONF} || die "install.rb config failed"
+		${RUBY} install.rb setup "$@" \
+			${RUBY_ECONF} || die "install.rb setup failed"
+	fi
+	if [ -f setup.rb ] ; then
+		${RUBY} setup.rb config --prefix=/usr "$@" \
+			${RUBY_ECONF} || die "setup.rb config failed"
+		${RUBY} setup.rb setup "$@" \
+			${RUBY_ECONF} || die "setup.rb setup failed"
+	fi
+	if [ -f extconf.rb ] ; then
+		${RUBY} extconf.rb "$@" \
+			${RUBY_ECONF} || die "extconf.rb failed"
+	fi
+}
+
+ruby_emake() {
+	if [ -f makefiles -o -f GNUmakefile -o -f makefile -o -f Makefile ] ; then
+		make CC="$(tc-getCC)" CXX="$(tc-getCXX)" DLDFLAGS="${LDFLAGS}" ${MAKEOPTS} ${EXTRA_EMAKE} "$@" || die "emake for ruby failed"
+	fi
+}
+
+ruby_src_compile() {
+	# You can pass configure options via RUBY_ECONF
+	ruby_econf || die
+	ruby_emake "$@" || die
+}
+
+doruby() {
+	( # dont want to pollute calling env
+		insinto $(${RUBY} -r rbconfig -e 'print Config::CONFIG["sitedir"]')
+		insopts -m 0644
+		doins "$@"
+	) || die "failed to install $@"
+}
+
+ruby_einstall() {
+	local siteruby
+
+	RUBY_ECONF="${RUBY_ECONF} ${EXTRA_ECONF}"
+	if [ -f install.rb ] ; then
+		${RUBY} install.rb config --prefix=${D}/usr "$@" \
+			${RUBY_ECONF} || die "install.rb config failed"
+		${RUBY} install.rb install "$@" \
+			${RUBY_ECONF} || die "install.rb install failed"
+	elif [ -f setup.rb ] ; then
+		${RUBY} setup.rb config --prefix=${D}/usr "$@" \
+			${RUBY_ECONF} || die "setup.rb config failed"
+		${RUBY} setup.rb install "$@" \
+			${RUBY_ECONF} || die "setup.rb install failed"
+	elif [ -f extconf.rb -o -f Makefile ] ; then
+		make DESTDIR=${D} "$@" install || die "make install failed"
+	else
+		siteruby=$(${RUBY} -r rbconfig -e 'print Config::CONFIG["sitedir"]')
+		insinto ${siteruby}
+		doins *.rb || die "doins failed"
+	fi
+}
+
+erubydoc() {
+	local rdbase=/usr/share/doc/${PF}/rd rdfiles=$(find . -name '*.rd*')
+
+	einfo "running dodoc for ruby ;)"
+
+	insinto ${rdbase}
+	[ -n "${rdfiles}" ] && doins ${rdfiles}
+	rmdir ${D}${rdbase} 2>/dev/null || true
+	if [ -d doc -o -d docs ] ; then
+		dohtml -x html -r {doc,docs}/*
+		dohtml -r {doc,docs}/html/*
+	else
+		dohtml -r *
+	fi
+
+	if ( use examples ); then
+		for dir in sample samples example examples; do
+			if [ -d ${dir} ] ; then
+				dodir /usr/share/doc/${PF}
+				cp -pPR ${dir} ${D}/usr/share/doc/${PF} || die "cp failed"
+			fi
+		done
+	fi
+
+	# Pattern matching will mismatch for locales without case based
+	# character sorting (from bug #129526)
+	export LC_COLLATE=C
+	unset LC_ALL
+
+	for i in ChangeLog* [A-Z][A-Z]* ; do
+		[ -e $i ] && dodoc $i
+	done
+}
+
+ruby_src_install() {
+
+	ruby_einstall "$@" || die
+
+	erubydoc
+}
+
+# erubyconf, erubymake and erubyinstall are kept for compatibility
+erubyconf() {
+	ruby_econf "$@"
+}
+
+erubymake() {
+	ruby_emake "$@"
+}
+
+erubyinstall() {
+	ruby_einstall "$@"
+}
+
+# prepall adds SLOT support for ruby.eclass
+prepall() {
+
+	[[ ! -x /usr/bin/ruby16 ]] && export USE_RUBY=${USE_RUBY/ruby16/}
+	[[ ! -x /usr/bin/ruby18 ]] && export USE_RUBY=${USE_RUBY/ruby18/}
+	[[ ! -x /usr/bin/ruby19 ]] && export USE_RUBY=${USE_RUBY/ruby19/}
+
+	local ruby_slots=$(echo "${USE_RUBY}" | wc -w)
+
+	if [ "$ruby_slots" -ge 2 ] || (use ppc-macos && [ "$ruby_slots" -ge 1 ])
+	then
+		einfo "Now we are building the package for ${USE_RUBY}"
+		for rb in ${USE_RUBY} ruby ; do
+			einfo "Using $rb"
+			export RUBY=/usr/bin/$rb
+			ruby() { /usr/bin/$rb "$@" ; }
+			mkdir -p ${S}
+			cd ${WORKDIR}
+			einfo "Unpacking for $rb"
+			src_unpack || die "src_unpack failed"
+			cd ${S}
+			find . -name '*.[ao]' -exec rm {} \;
+			einfo "Building for $rb"
+			src_compile || die "src_compile failed"
+			cd ${S}
+			einfo "Installing for $rb"
+			src_install || die "src_install failed"
+		done
+	elif [ "${USE_RUBY}" == "any" ] ; then
+		siteruby=$(${RUBY} -r rbconfig -e 'print Config::CONFIG["sitelibdir"]')
+		# in case no directories found in siteruby
+		local shopts=$-
+		set -o noglob # so that bash doen't expand "*"
+
+		for x in ${D}/${siteruby}/* ; do
+			mv $x ${D}/${siteruby}/..
+		done
+		if [ -d ${D}${siteruby} ] ; then
+			rmdir --ignore-fail-on-non-empty ${D}/${siteruby}
+		fi
+
+		set +o noglob; set -$shopts # reset old shell opts
+	fi
+
+	prepallman
+	prepallinfo
+	prepallstrip
+}
+