[gentoo-commits] proj/kde-sunset:master commit in: eclass/

[Andreas Sturmlechner]

commit:     e95bc6041cf9940cfecef2ffe5ed28dcd988a12c
Author:     Andreas Sturmlechner <asturm <AT> gentoo <DOT> org>
AuthorDate: Thu May 31 20:31:11 2018 +0000
Commit:     Andreas Sturmlechner <asturm <AT> gentoo <DOT> org>
CommitDate: Thu May 31 20:31:11 2018 +0000
URL:        https://gitweb.gentoo.org/proj/kde-sunset.git/commit/?id=e95bc604

qt4*eclass: Import from Gentoo ebuild repository

 eclass/qt4-build-multilib.eclass | 847 +++++++++++++++++++++++++++++++++++++++
 eclass/qt4-r2.eclass             | 139 +++++++
 2 files changed, 986 insertions(+)

diff --git a/eclass/qt4-build-multilib.eclass b/eclass/qt4-build-multilib.eclass
new file mode 100644
index 0000000..7666936
--- /dev/null
+++ b/eclass/qt4-build-multilib.eclass
@@ -0,0 +1,847 @@
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+# @ECLASS: qt4-build-multilib.eclass
+# @MAINTAINER:
+# qt@g.o
+# @AUTHOR:
+# Davide Pesavento <pesa@g.o>
+# @BLURB: Eclass for Qt4 split ebuilds with multilib support.
+# @DESCRIPTION:
+# This eclass contains various functions that are used when building Qt4.
+# Requires EAPI 5.
+
+case ${EAPI} in
+	5)	: ;;
+	*)	die "qt4-build-multilib.eclass: unsupported EAPI=${EAPI:-0}" ;;
+esac
+
+inherit eutils flag-o-matic multilib multilib-minimal toolchain-funcs
+
+HOMEPAGE="https://www.qt.io/"
+LICENSE="|| ( LGPL-2.1 LGPL-3 GPL-3 ) FDL-1.3"
+SLOT="4"
+
+case ${PV} in
+	4.?.9999)
+		# git stable branch
+		QT4_BUILD_TYPE="live"
+		EGIT_BRANCH=${PV%.9999}
+		;;
+	*)
+		# official stable release
+		QT4_BUILD_TYPE="release"
+		MY_P=qt-everywhere-opensource-src-${PV/_/-}
+		SRC_URI="http://download.qt.io/official_releases/qt/${PV%.*}/${PV}/${MY_P}.tar.gz"
+		S=${WORKDIR}/${MY_P}
+		;;
+esac
+
+EGIT_REPO_URI=(
+	"git://code.qt.io/qt/qt.git"
+	"https://code.qt.io/git/qt/qt.git"
+	"https://github.com/qtproject/qt.git"
+)
+[[ ${QT4_BUILD_TYPE} == live ]] && inherit git-r3
+
+if [[ ${PN} != qttranslations ]]; then
+	IUSE="aqua debug pch"
+	[[ ${PN} != qtxmlpatterns ]] && IUSE+=" +exceptions"
+fi
+
+DEPEND="
+	dev-lang/perl
+	virtual/pkgconfig[${MULTILIB_USEDEP}]
+"
+RDEPEND="
+	dev-qt/qtchooser
+"
+
+
+# src_{configure,compile,test,install} are inherited from multilib-minimal
+EXPORT_FUNCTIONS src_unpack src_prepare pkg_postinst pkg_postrm
+
+multilib_src_configure()	{ qt4_multilib_src_configure; }
+multilib_src_compile()		{ qt4_multilib_src_compile; }
+multilib_src_test()		{ qt4_multilib_src_test; }
+multilib_src_install()		{ qt4_multilib_src_install; }
+multilib_src_install_all()	{ qt4_multilib_src_install_all; }
+
+
+# @ECLASS-VARIABLE: PATCHES
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Array variable containing all the patches to be applied. This variable
+# is expected to be defined in the global scope of ebuilds. Make sure to
+# specify the full path. This variable is used in src_prepare phase.
+#
+# Example:
+# @CODE
+#	PATCHES=(
+#		"${FILESDIR}/mypatch.patch"
+#		"${FILESDIR}/mypatch2.patch"
+#	)
+# @CODE
+
+# @ECLASS-VARIABLE: QT4_TARGET_DIRECTORIES
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Space-separated list of directories that will be configured,
+# compiled, and installed. All paths must be relative to ${S}.
+
+# @ECLASS-VARIABLE: QCONFIG_ADD
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# List of options that must be added to QT_CONFIG in qconfig.pri
+
+# @ECLASS-VARIABLE: QCONFIG_REMOVE
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# List of options that must be removed from QT_CONFIG in qconfig.pri
+
+# @ECLASS-VARIABLE: QCONFIG_DEFINE
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# List of macros that must be defined in QtCore/qconfig.h
+
+
+######  Phase functions  ######
+
+# @FUNCTION: qt4-build-multilib_src_unpack
+# @DESCRIPTION:
+# Unpacks the sources.
+qt4-build-multilib_src_unpack() {
+	if tc-is-gcc; then
+		if [[ $(gcc-major-version) -lt 4 ]] || \
+		   [[ $(gcc-major-version) -eq 4 && $(gcc-minor-version) -lt 4 ]]; then
+			ewarn
+			ewarn "Using a GCC version lower than 4.4 is not supported"
+			ewarn
+		fi
+	fi
+
+	if [[ ${PN} == qtwebkit ]]; then
+		eshopts_push -s extglob
+		if is-flagq '-g?(gdb)?([1-9])'; then
+			ewarn
+			ewarn "You have enabled debug info (probably have -g or -ggdb in your CFLAGS/CXXFLAGS)."
+			ewarn "You may experience really long compilation times and/or increased memory usage."
+			ewarn "If compilation fails, please try removing -g/-ggdb before reporting a bug."
+			ewarn "For more info check out https://bugs.gentoo.org/307861"
+			ewarn
+		fi
+		eshopts_pop
+	fi
+
+	case ${QT4_BUILD_TYPE} in
+		live)    git-r3_src_unpack ;;
+		release) default ;;
+	esac
+}
+
+# @FUNCTION: qt4-build-multilib_src_prepare
+# @DESCRIPTION:
+# Prepare the sources before the configure phase. Strip CFLAGS if necessary, and fix
+# the build system in order to respect CFLAGS/CXXFLAGS/LDFLAGS specified in make.conf.
+qt4-build-multilib_src_prepare() {
+	if [[ ${PN} != qtcore ]]; then
+		# avoid unnecessary qmake recompilations
+		sed -i -e 's/^if true;/if false;/' configure \
+			|| die "sed failed (skip qmake bootstrap)"
+	fi
+
+	# skip X11 tests in non-gui packages to avoid spurious dependencies
+	if has ${PN} qtbearer qtcore qtdbus qtscript qtsql qttest qttranslations qtxmlpatterns; then
+		sed -i -e '/^if.*PLATFORM_X11.*CFG_GUI/,/^fi$/d' configure \
+			|| die "sed failed (skip X11 tests)"
+	fi
+
+	# Qt4 is not safe to build with C++14 (the new gcc-6 default).
+	# Upstream has addressed this for Qt5, but while we continue to
+	# support Qt4, we need to ensure everything is built in C++98 mode.
+	# See bugs 582522, 582618, 583662, 583744.
+	append-cxxflags -std=gnu++98
+
+	if [[ ${PN} == qtcore ]]; then
+		# Bug 373061
+		# qmake bus errors with -O2 or -O3 but -O1 works
+		if [[ ${CHOST} == *86*-apple-darwin* ]]; then
+			replace-flags -O[23] -O1
+		fi
+
+		# Bug 503500
+		# undefined reference with -Os and --as-needed
+		if use x86 || use_if_iuse abi_x86_32; then
+			replace-flags -Os -O2
+		fi
+	fi
+
+	if [[ ${PN} == qtdeclarative ]]; then
+		# Bug 551560
+		# gcc-4.8 ICE with -Os, fixed in 4.9
+		if use x86 && tc-is-gcc && [[ $(gcc-version) == 4.8 ]]; then
+			replace-flags -Os -O2
+		fi
+	fi
+
+	if [[ ${PN} == qtwebkit ]]; then
+		# Bug 550780
+		# various ICEs with graphite-related flags, gcc-5 works
+		if [[ $(gcc-major-version) -lt 5 ]]; then
+			filter-flags -fgraphite-identity -floop-strip-mine
+		fi
+	fi
+
+	# Bug 261632
+	if use ppc64; then
+		append-flags -mminimal-toc
+	fi
+
+	# Teach configure about gcc-6 and later
+	sed -i -e 's:5\*|:[5-9]*|:' \
+		configure || die "sed gcc version failed"
+
+	# Read also AR from the environment
+	sed -i -e 's/^SYSTEM_VARIABLES="/&AR /' \
+		configure || die "sed SYSTEM_VARIABLES failed"
+
+	# Reset QMAKE_*FLAGS_{RELEASE,DEBUG} variables,
+	# or they will override the user's flags (via .qmake.cache)
+	sed -i -e '/^SYSTEM_VARIABLES=/ i \
+		QMakeVar set QMAKE_CFLAGS_RELEASE\
+		QMakeVar set QMAKE_CFLAGS_DEBUG\
+		QMakeVar set QMAKE_CXXFLAGS_RELEASE\
+		QMakeVar set QMAKE_CXXFLAGS_DEBUG\
+		QMakeVar set QMAKE_LFLAGS_RELEASE\
+		QMakeVar set QMAKE_LFLAGS_DEBUG\n' \
+		configure || die "sed QMAKE_*FLAGS_{RELEASE,DEBUG} failed"
+
+	# Drop -nocache from qmake invocation in all configure tests, to ensure that the
+	# correct toolchain and build flags are picked up from config.tests/.qmake.cache
+	find config.tests/unix -name '*.test' -type f -execdir \
+		sed -i -e '/bin\/qmake/s/-nocache//' '{}' + || die "sed -nocache failed"
+
+	# compile.test needs additional patching so that it doesn't create another cache file
+	# inside the test subdir, which would incorrectly override config.tests/.qmake.cache
+	sed -i -e '/echo.*QT_BUILD_TREE.*\.qmake\.cache/d' \
+		-e '/bin\/qmake/s/ "$SRCDIR/ "QT_BUILD_TREE=$OUTDIR"&/' \
+		config.tests/unix/compile.test || die "sed compile.test failed"
+
+	# Delete references to the obsolete /usr/X11R6 directory
+	# On prefix, this also prevents looking at non-prefix stuff
+	sed -i -re '/^QMAKE_(LIB|INC)DIR(_X11|_OPENGL|)\s+/ s/=.*/=/' \
+		mkspecs/common/linux.conf \
+		mkspecs/$(qt4_get_mkspec)/qmake.conf \
+		|| die "sed QMAKE_(LIB|INC)DIR failed"
+
+	if use_if_iuse aqua; then
+		sed -i \
+			-e '/^CONFIG/s:app_bundle::' \
+			-e '/^CONFIG/s:plugin_no_soname:plugin_with_soname absolute_library_soname:' \
+			mkspecs/$(qt4_get_mkspec)/qmake.conf \
+			|| die "sed failed (aqua)"
+
+		# we are crazy and build cocoa + qt3support
+		if { ! in_iuse qt3support || use qt3support; } && [[ ${CHOST##*-darwin} -ge 9 ]]; then
+			sed -i -e "/case \"\$PLATFORM,\$CFG_MAC_COCOA\" in/,/;;/ s|CFG_QT3SUPPORT=\"no\"|CFG_QT3SUPPORT=\"yes\"|" \
+				configure || die "sed failed (cocoa + qt3support)"
+		fi
+	fi
+
+	if [[ ${CHOST} == *-darwin* ]]; then
+		# Set FLAGS and remove -arch, since our gcc-apple is multilib crippled (by design)
+		sed -i \
+			-e "s:QMAKE_CFLAGS_RELEASE.*=.*:QMAKE_CFLAGS_RELEASE=${CFLAGS}:" \
+			-e "s:QMAKE_CXXFLAGS_RELEASE.*=.*:QMAKE_CXXFLAGS_RELEASE=${CXXFLAGS}:" \
+			-e "s:QMAKE_LFLAGS_RELEASE.*=.*:QMAKE_LFLAGS_RELEASE=-headerpad_max_install_names ${LDFLAGS}:" \
+			-e "s:-arch\s\w*::g" \
+			mkspecs/common/g++-macx.conf \
+			|| die "sed g++-macx.conf failed"
+
+		# Fix configure's -arch settings that appear in qmake/Makefile and also
+		# fix arch handling (automagically duplicates our -arch arg and breaks
+		# pch). Additionally disable Xarch support.
+		sed -i \
+			-e "s:-arch i386::" \
+			-e "s:-arch ppc::" \
+			-e "s:-arch x86_64::" \
+			-e "s:-arch ppc64::" \
+			-e "s:-arch \$i::" \
+			-e "/if \[ ! -z \"\$NATIVE_64_ARCH\" \]; then/,/fi/ d" \
+			-e "s:CFG_MAC_XARCH=yes:CFG_MAC_XARCH=no:g" \
+			-e "s:-Xarch_x86_64::g" \
+			-e "s:-Xarch_ppc64::g" \
+			configure mkspecs/common/gcc-base-macx.conf mkspecs/common/g++-macx.conf \
+			|| die "sed -arch/-Xarch failed"
+
+		# On Snow Leopard don't fall back to 10.5 deployment target.
+		if [[ ${CHOST} == *-apple-darwin10 ]]; then
+			sed -i \
+				-e "s:QMakeVar set QMAKE_MACOSX_DEPLOYMENT_TARGET.*:QMakeVar set QMAKE_MACOSX_DEPLOYMENT_TARGET 10.6:g" \
+				-e "s:-mmacosx-version-min=10.[0-9]:-mmacosx-version-min=10.6:g" \
+				configure mkspecs/common/g++-macx.conf \
+				|| die "sed deployment target failed"
+		fi
+	fi
+
+	if [[ ${CHOST} == *-solaris* ]]; then
+		sed -i -e '/^QMAKE_LFLAGS_THREAD/a QMAKE_LFLAGS_DYNAMIC_LIST = -Wl,--dynamic-list,' \
+			mkspecs/$(qt4_get_mkspec)/qmake.conf || die
+	fi
+
+	# apply patches
+	[[ ${PATCHES[@]} ]] && epatch "${PATCHES[@]}"
+	epatch_user
+}
+
+qt4_multilib_src_configure() {
+	qt4_prepare_env
+
+	qt4_symlink_tools_to_build_dir
+
+	# toolchain setup ('local -x' because of bug 532510)
+	local -x \
+		AR="$(tc-getAR) cqs" \
+		CC=$(tc-getCC) \
+		CXX=$(tc-getCXX) \
+		LD=$(tc-getCXX) \
+		MAKEFLAGS=${MAKEOPTS} \
+		OBJCOPY=$(tc-getOBJCOPY) \
+		OBJDUMP=$(tc-getOBJDUMP) \
+		STRIP=$(tc-getSTRIP)
+
+	# convert tc-arch to the values supported by Qt
+	local arch=$(tc-arch)
+	case ${arch} in
+		amd64|x64-*)	arch=x86_64 ;;
+		arm64|hppa)	arch=generic ;;
+		ppc*-macos)	arch=ppc ;;
+		ppc*)		arch=powerpc ;;
+		sparc*)		arch=sparc ;;
+		x86-macos)	arch=x86 ;;
+		x86*)		arch=i386 ;;
+	esac
+
+	# configure arguments
+	local conf=(
+		# installation paths
+		-prefix "${QT4_PREFIX}"
+		-bindir "${QT4_BINDIR}"
+		-libdir "${QT4_LIBDIR}"
+		-docdir "${QT4_DOCDIR}"
+		-headerdir "${QT4_HEADERDIR}"
+		-plugindir "${QT4_PLUGINDIR}"
+		-importdir "${QT4_IMPORTDIR}"
+		-datadir "${QT4_DATADIR}"
+		-translationdir "${QT4_TRANSLATIONDIR}"
+		-sysconfdir "${QT4_SYSCONFDIR}"
+		-examplesdir "${QT4_EXAMPLESDIR}"
+		-demosdir "${QT4_DEMOSDIR}"
+
+		# debug/release
+		$(use_if_iuse debug && echo -debug || echo -release)
+		-no-separate-debug-info
+
+		# licensing stuff
+		-opensource -confirm-license
+
+		# build shared libraries
+		-shared
+
+		# skip recursive processing of .pro files at the end of configure
+		# (we run qmake by ourselves), thus saving quite a bit of time
+		-dont-process
+
+		# always enable large file support
+		-largefile
+
+		# exceptions USE flag
+		$(in_iuse exceptions && qt_use exceptions || echo -exceptions)
+
+		# build STL support
+		-stl
+
+		# architecture/platform (mkspec)
+		-arch ${arch}
+		-platform $(qt4_get_mkspec)
+
+		# instruction set support
+		$(is-flagq -mno-mmx	&& echo -no-mmx)
+		$(is-flagq -mno-3dnow	&& echo -no-3dnow)
+		$(is-flagq -mno-sse	&& echo -no-sse)
+		$(is-flagq -mno-sse2	&& echo -no-sse2)
+		$(is-flagq -mno-sse3	&& echo -no-sse3)
+		$(is-flagq -mno-ssse3	&& echo -no-ssse3)
+		$(is-flagq -mno-sse4.1	&& echo -no-sse4.1)
+		$(is-flagq -mno-sse4.2	&& echo -no-sse4.2)
+		$(is-flagq -mno-avx	&& echo -no-avx)
+		$(is-flagq -mfpu=*	&& ! is-flagq -mfpu=*neon* && echo -no-neon)
+
+		# bug 367045
+		$([[ ${CHOST} == *86*-apple-darwin* ]] && echo -no-ssse3)
+
+		# prefer system libraries
+		-system-zlib
+
+		# exclude examples and demos from default build
+		-nomake examples
+		-nomake demos
+
+		# disable rpath on non-prefix (bugs 380415 and 417169)
+		$(usex prefix '' -no-rpath)
+
+		# print verbose information about each configure test
+		-verbose
+
+		# precompiled headers don't work on hardened, where the flag is masked
+		$(in_iuse pch && qt_use pch || echo -no-pch)
+
+		# enable linker optimizations to reduce relocations, except on Solaris
+		# where this flag seems to introduce major breakage to applications,
+		# mostly to be seen as a core dump with the message:
+		# "QPixmap: Must construct a QApplication before a QPaintDevice"
+		$([[ ${CHOST} != *-solaris* ]] && echo -reduce-relocations)
+	)
+
+	if use_if_iuse aqua; then
+		if [[ ${CHOST##*-darwin} -ge 9 ]]; then
+			conf+=(
+				# on (snow) leopard use the new (frameworked) cocoa code
+				-cocoa -framework
+				# add hint for the framework location
+				-F"${QT4_LIBDIR}"
+			)
+		else
+			conf+=(-no-framework)
+		fi
+	fi
+
+	conf+=(
+		# module-specific options
+		"${myconf[@]}"
+	)
+
+	einfo "Configuring with: ${conf[@]}"
+	"${S}"/configure "${conf[@]}" || die "configure failed"
+
+	# configure is stupid and assigns QMAKE_LFLAGS twice,
+	# thus the previous -rpath-link flag gets overwritten
+	# and some packages (e.g. qthelp) fail to link
+	sed -i -e '/^QMAKE_LFLAGS =/ s:$: $$QMAKE_LFLAGS:' \
+		.qmake.cache || die "sed .qmake.cache failed"
+
+	qt4_qmake
+	qt4_foreach_target_subdir qt4_qmake
+}
+
+qt4_multilib_src_compile() {
+	qt4_prepare_env
+
+	qt4_foreach_target_subdir emake
+}
+
+qt4_multilib_src_test() {
+	qt4_prepare_env
+
+	qt4_foreach_target_subdir emake -j1 check
+}
+
+qt4_multilib_src_install() {
+	qt4_prepare_env
+
+	qt4_foreach_target_subdir emake INSTALL_ROOT="${D}" install
+
+	if [[ ${PN} == qtcore ]]; then
+		set -- emake INSTALL_ROOT="${D}" install_{mkspecs,qmake}
+		einfo "Running $*"
+		"$@"
+
+		# install env.d file
+		cat > "${T}/44qt4-${CHOST}" <<-_EOF_
+			LDPATH="${QT4_LIBDIR}"
+		_EOF_
+		doenvd "${T}/44qt4-${CHOST}"
+
+		# install qtchooser configuration file
+		cat > "${T}/qt4-${CHOST}.conf" <<-_EOF_
+			${QT4_BINDIR}
+			${QT4_LIBDIR}
+		_EOF_
+
+		(
+			insinto /etc/xdg/qtchooser
+			doins "${T}/qt4-${CHOST}.conf"
+		)
+
+		if multilib_is_native_abi; then
+			# convenience symlinks
+			dosym qt4-"${CHOST}".conf /etc/xdg/qtchooser/4.conf
+			dosym qt4-"${CHOST}".conf /etc/xdg/qtchooser/qt4.conf
+		fi
+	fi
+
+	# move pkgconfig directory to the correct location
+	if [[ -d ${D}${QT4_LIBDIR}/pkgconfig ]]; then
+		mv "${D}${QT4_LIBDIR}"/pkgconfig "${ED}usr/$(get_libdir)" || die
+	fi
+
+	qt4_install_module_qconfigs
+	qt4_symlink_framework_headers
+}
+
+qt4_multilib_src_install_all() {
+	if [[ ${PN} == qtcore ]]; then
+		# include gentoo-qconfig.h at the beginning of Qt{,Core}/qconfig.h
+		if use aqua && [[ ${CHOST#*-darwin} -ge 9 ]]; then
+			sed -i -e '1i #include <QtCore/Gentoo/gentoo-qconfig.h>\n' \
+				"${D}${QT4_LIBDIR}"/QtCore.framework/Headers/qconfig.h \
+				|| die "sed failed (qconfig.h)"
+			dosym "${QT4_HEADERDIR#${EPREFIX}}"/Gentoo \
+				"${QT4_LIBDIR#${EPREFIX}}"/QtCore.framework/Headers/Gentoo
+		else
+			sed -i -e '1i #include <Gentoo/gentoo-qconfig.h>\n' \
+				"${D}${QT4_HEADERDIR}"/Qt{,Core}/qconfig.h \
+				|| die "sed failed (qconfig.h)"
+		fi
+
+		dodir "${QT4_DATADIR#${EPREFIX}}"/mkspecs/gentoo
+		mv "${D}${QT4_DATADIR}"/mkspecs/{qconfig.pri,gentoo/} || die
+	fi
+
+	# install private headers of a few modules
+	if has ${PN} qtcore qtdeclarative qtgui qtscript; then
+		local moduledir=${PN#qt}
+		local modulename=Qt$(tr 'a-z' 'A-Z' <<< ${moduledir:0:1})${moduledir:1}
+		[[ ${moduledir} == core ]] && moduledir=corelib
+
+		einfo "Installing private headers into ${QT4_HEADERDIR}/${modulename}/private"
+		insinto "${QT4_HEADERDIR#${EPREFIX}}"/${modulename}/private
+		find "${S}"/src/${moduledir} -type f -name '*_p.h' -exec doins '{}' + || die
+	fi
+
+	prune_libtool_files
+}
+
+# @FUNCTION: qt4-build-multilib_pkg_postinst
+# @DESCRIPTION:
+# Regenerate configuration after installation or upgrade/downgrade.
+qt4-build-multilib_pkg_postinst() {
+	qt4_regenerate_global_qconfigs
+}
+
+# @FUNCTION: qt4-build-multilib_pkg_postrm
+# @DESCRIPTION:
+# Regenerate configuration when a module is completely removed.
+qt4-build-multilib_pkg_postrm() {
+	qt4_regenerate_global_qconfigs
+}
+
+
+######  Public helpers  ######
+
+# @FUNCTION: qt_use
+# @USAGE: <flag> [feature] [enableval]
+# @DESCRIPTION:
+# <flag> is the name of a flag in IUSE.
+#
+# Outputs "-${enableval}-${feature}" if <flag> is enabled, "-no-${feature}"
+# otherwise. If [feature] is not specified, <flag> is used in its place.
+# If [enableval] is not specified, the "-${enableval}" prefix is omitted.
+qt_use() {
+	[[ $# -ge 1 ]] || die "${FUNCNAME}() requires at least one argument"
+
+	usex "$1" "${3:+-$3}-${2:-$1}" "-no-${2:-$1}"
+}
+
+# @FUNCTION: qt_native_use
+# @USAGE: <flag> [feature] [enableval]
+# @DESCRIPTION:
+# <flag> is the name of a flag in IUSE.
+#
+# Outputs "-${enableval}-${feature}" if <flag> is enabled and we are currently
+# building for the native ABI, "-no-${feature}" otherwise. If [feature] is not
+# specified, <flag> is used in its place. If [enableval] is not specified,
+# the "-${enableval}" prefix is omitted.
+qt_native_use() {
+	[[ $# -ge 1 ]] || die "${FUNCNAME}() requires at least one argument"
+
+	multilib_is_native_abi && qt_use "$@" || echo "-no-${2:-$1}"
+}
+
+
+######  Internal functions  ######
+
+# @FUNCTION: qt4_prepare_env
+# @INTERNAL
+# @DESCRIPTION:
+# Prepares the environment for building Qt.
+qt4_prepare_env() {
+	# setup installation directories
+	# note: keep paths in sync with qmake-utils.eclass
+	QT4_PREFIX=${EPREFIX}/usr
+	QT4_HEADERDIR=${QT4_PREFIX}/include/qt4
+	QT4_LIBDIR=${QT4_PREFIX}/$(get_libdir)/qt4
+	QT4_BINDIR=${QT4_LIBDIR}/bin
+	QT4_PLUGINDIR=${QT4_LIBDIR}/plugins
+	QT4_IMPORTDIR=${QT4_LIBDIR}/imports
+	QT4_DATADIR=${QT4_PREFIX}/share/qt4
+	QT4_DOCDIR=${QT4_PREFIX}/share/doc/qt-${PV}
+	QT4_TRANSLATIONDIR=${QT4_DATADIR}/translations
+	QT4_EXAMPLESDIR=${QT4_DATADIR}/examples
+	QT4_DEMOSDIR=${QT4_DATADIR}/demos
+	QT4_SYSCONFDIR=${EPREFIX}/etc/qt4
+
+	# are these still needed?
+	QMAKE_LIBDIR_QT=${QT4_LIBDIR}
+	export XDG_CONFIG_HOME="${T}"
+
+	# can confuse qmake if set (bug 583352)
+	unset QMAKESPEC
+}
+
+# @FUNCTION: qt4_foreach_target_subdir
+# @INTERNAL
+# @DESCRIPTION:
+# Executes the given command inside each directory listed in QT4_TARGET_DIRECTORIES.
+qt4_foreach_target_subdir() {
+	local ret=0 subdir=
+	for subdir in ${QT4_TARGET_DIRECTORIES}; do
+		mkdir -p "${subdir}" || die
+		pushd "${subdir}" >/dev/null || die
+
+		einfo "Running $* ${subdir:+in ${subdir}}"
+		"$@"
+		((ret+=$?))
+
+		popd >/dev/null || die
+	done
+
+	return ${ret}
+}
+
+# @FUNCTION: qt4_symlink_tools_to_build_dir
+# @INTERNAL
+# @DESCRIPTION:
+# Symlinks qtcore tools to BUILD_DIR,
+# so that they can be used when building other modules.
+qt4_symlink_tools_to_build_dir() {
+	local tool= tools=()
+	if [[ ${PN} != qtcore ]]; then
+		tools+=(qmake moc rcc uic)
+	fi
+
+	mkdir -p "${BUILD_DIR}"/bin || die
+	pushd "${BUILD_DIR}"/bin >/dev/null || die
+
+	for tool in "${tools[@]}"; do
+		[[ -e ${QT4_BINDIR}/${tool} ]] || continue
+		ln -s "${QT4_BINDIR}/${tool}" . || die "failed to symlink ${tool}"
+	done
+
+	popd >/dev/null || die
+}
+
+# @FUNCTION: qt4_qmake
+# @INTERNAL
+# @DESCRIPTION:
+# Helper function that runs qmake in the current target subdir.
+# Intended to be called by qt4_foreach_target_subdir().
+qt4_qmake() {
+	local projectdir=${PWD/#${BUILD_DIR}/${S}}
+
+	"${BUILD_DIR}"/bin/qmake \
+		"${projectdir}" \
+		CONFIG+=nostrip \
+		LIBS+=-L"${QT4_LIBDIR}" \
+		"${myqmakeargs[@]}" \
+		|| die "qmake failed (${projectdir#${S}/})"
+}
+
+# @FUNCTION: qt4_install_module_qconfigs
+# @INTERNAL
+# @DESCRIPTION:
+# Creates and installs gentoo-specific ${PN}-qconfig.{h,pri} files.
+qt4_install_module_qconfigs() {
+	local x
+	if [[ -n ${QCONFIG_ADD} || -n ${QCONFIG_REMOVE} ]]; then
+		for x in QCONFIG_ADD QCONFIG_REMOVE; do
+			[[ -n ${!x} ]] && echo ${x}=${!x} >> "${BUILD_DIR}"/${PN}-qconfig.pri
+		done
+		insinto ${QT4_DATADIR#${EPREFIX}}/mkspecs/gentoo
+		doins "${BUILD_DIR}"/${PN}-qconfig.pri
+	fi
+
+	if [[ -n ${QCONFIG_DEFINE} ]]; then
+		for x in ${QCONFIG_DEFINE}; do
+			echo "#define ${x}" >> "${BUILD_DIR}"/gentoo-${PN}-qconfig.h
+		done
+		insinto ${QT4_HEADERDIR#${EPREFIX}}/Gentoo
+		doins "${BUILD_DIR}"/gentoo-${PN}-qconfig.h
+	fi
+}
+
+# @FUNCTION: qt4_regenerate_global_qconfigs
+# @INTERNAL
+# @DESCRIPTION:
+# Generates Gentoo-specific qconfig.{h,pri} according to the build configuration.
+# Don't call die here because dying in pkg_post{inst,rm} only makes things worse.
+qt4_regenerate_global_qconfigs() {
+	if [[ -n ${QCONFIG_ADD} || -n ${QCONFIG_REMOVE} || -n ${QCONFIG_DEFINE} || ${PN} == qtcore ]]; then
+		local x qconfig_add qconfig_remove qconfig_new
+		for x in "${ROOT}${QT4_DATADIR}"/mkspecs/gentoo/*-qconfig.pri; do
+			[[ -f ${x} ]] || continue
+			qconfig_add+=" $(sed -n 's/^QCONFIG_ADD=//p' "${x}")"
+			qconfig_remove+=" $(sed -n 's/^QCONFIG_REMOVE=//p' "${x}")"
+		done
+
+		if [[ -e "${ROOT}${QT4_DATADIR}"/mkspecs/gentoo/qconfig.pri ]]; then
+			# start with the qconfig.pri that qtcore installed
+			if ! cp "${ROOT}${QT4_DATADIR}"/mkspecs/gentoo/qconfig.pri \
+				"${ROOT}${QT4_DATADIR}"/mkspecs/qconfig.pri; then
+				eerror "cp qconfig failed."
+				return 1
+			fi
+
+			# generate list of QT_CONFIG entries from the existing list
+			# including qconfig_add and excluding qconfig_remove
+			for x in $(sed -n 's/^QT_CONFIG +=//p' \
+				"${ROOT}${QT4_DATADIR}"/mkspecs/qconfig.pri) ${qconfig_add}; do
+					has ${x} ${qconfig_remove} || qconfig_new+=" ${x}"
+			done
+
+			# replace the existing QT_CONFIG list with qconfig_new
+			if ! sed -i -e "s/QT_CONFIG +=.*/QT_CONFIG += ${qconfig_new}/" \
+				"${ROOT}${QT4_DATADIR}"/mkspecs/qconfig.pri; then
+				eerror "Sed for QT_CONFIG failed"
+				return 1
+			fi
+
+			# create Gentoo/qconfig.h
+			if [[ ! -e ${ROOT}${QT4_HEADERDIR}/Gentoo ]]; then
+				if ! mkdir -p "${ROOT}${QT4_HEADERDIR}"/Gentoo; then
+					eerror "mkdir ${QT4_HEADERDIR}/Gentoo failed"
+					return 1
+				fi
+			fi
+			: > "${ROOT}${QT4_HEADERDIR}"/Gentoo/gentoo-qconfig.h
+			for x in "${ROOT}${QT4_HEADERDIR}"/Gentoo/gentoo-*-qconfig.h; do
+				[[ -f ${x} ]] || continue
+				cat "${x}" >> "${ROOT}${QT4_HEADERDIR}"/Gentoo/gentoo-qconfig.h
+			done
+		else
+			rm -f "${ROOT}${QT4_DATADIR}"/mkspecs/qconfig.pri
+			rm -f "${ROOT}${QT4_HEADERDIR}"/Gentoo/gentoo-qconfig.h
+			rmdir "${ROOT}${QT4_DATADIR}"/mkspecs \
+				"${ROOT}${QT4_DATADIR}" \
+				"${ROOT}${QT4_HEADERDIR}"/Gentoo \
+				"${ROOT}${QT4_HEADERDIR}" 2>/dev/null
+		fi
+	fi
+}
+
+# @FUNCTION: qt4_symlink_framework_headers
+# @DESCRIPTION:
+# On OS X we need to add some symlinks when frameworks are being
+# used, to avoid complications with some more or less stupid packages.
+qt4_symlink_framework_headers() {
+	if use_if_iuse aqua && [[ ${CHOST##*-darwin} -ge 9 ]]; then
+		local frw dest f h rdir
+		# Some packages tend to include <Qt/...>
+		dodir "${QT4_HEADERDIR#${EPREFIX}}"/Qt
+
+		# Fake normal headers when frameworks are installed... eases life later
+		# on, make sure we use relative links though, as some ebuilds assume
+		# these dirs exist in src_install to add additional files
+		f=${QT4_HEADERDIR}
+		h=${QT4_LIBDIR}
+		while [[ -n ${f} && ${f%%/*} == ${h%%/*} ]] ; do
+			f=${f#*/}
+			h=${h#*/}
+		done
+		rdir=${h}
+		f="../"
+		while [[ ${h} == */* ]] ; do
+			f="${f}../"
+			h=${h#*/}
+		done
+		rdir="${f}${rdir}"
+
+		for frw in "${D}${QT4_LIBDIR}"/*.framework; do
+			[[ -e "${frw}"/Headers ]] || continue
+			f=$(basename ${frw})
+			dest="${QT4_HEADERDIR#${EPREFIX}}"/${f%.framework}
+			dosym "${rdir}"/${f}/Headers "${dest}"
+
+			# Link normal headers as well.
+			for hdr in "${D}${QT4_LIBDIR}/${f}"/Headers/*; do
+				h=$(basename ${hdr})
+				dosym "../${rdir}"/${f}/Headers/${h} \
+					"${QT4_HEADERDIR#${EPREFIX}}"/Qt/${h}
+			done
+		done
+	fi
+}
+
+# @FUNCTION: qt4_get_mkspec
+# @INTERNAL
+# @DESCRIPTION:
+# Returns the right mkspec for the current CHOST/CXX combination.
+qt4_get_mkspec() {
+	local spec=
+
+	case ${CHOST} in
+		*-linux*)
+			spec=linux ;;
+		*-darwin*)
+			use_if_iuse aqua &&
+				spec=macx ||   # mac with carbon/cocoa
+				spec=darwin ;; # darwin/mac with X11
+		*-freebsd*|*-dragonfly*)
+			spec=freebsd ;;
+		*-netbsd*)
+			spec=netbsd ;;
+		*-openbsd*)
+			spec=openbsd ;;
+		*-aix*)
+			spec=aix ;;
+		hppa*-hpux*)
+			spec=hpux ;;
+		ia64*-hpux*)
+			spec=hpuxi ;;
+		*-solaris*)
+			spec=solaris ;;
+		*)
+			die "qt4-build-multilib.eclass: unsupported CHOST '${CHOST}'" ;;
+	esac
+
+	case $(tc-getCXX) in
+		*g++*)
+			spec+=-g++ ;;
+		*clang*)
+			if [[ -d ${S}/mkspecs/unsupported/${spec}-clang ]]; then
+				spec=unsupported/${spec}-clang
+			else
+				ewarn "${spec}-clang mkspec does not exist, falling back to ${spec}-g++"
+				spec+=-g++
+			fi ;;
+		*icpc*)
+			if [[ -d ${S}/mkspecs/${spec}-icc ]]; then
+				spec+=-icc
+			else
+				ewarn "${spec}-icc mkspec does not exist, falling back to ${spec}-g++"
+				spec+=-g++
+			fi ;;
+		*)
+			die "qt4-build-multilib.eclass: unsupported compiler '$(tc-getCXX)'" ;;
+	esac
+
+	# Add -64 for 64-bit prefix profiles
+	if use amd64-linux || use ppc64-linux ||
+		use x64-macos ||
+		use sparc64-solaris || use x64-solaris
+	then
+		[[ -d ${S}/mkspecs/${spec}-64 ]] && spec+=-64
+	fi
+
+	echo ${spec}
+}

diff --git a/eclass/qt4-r2.eclass b/eclass/qt4-r2.eclass
new file mode 100644
index 0000000..d8a7252
--- /dev/null
+++ b/eclass/qt4-r2.eclass
@@ -0,0 +1,139 @@
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+# @ECLASS: qt4-r2.eclass
+# @MAINTAINER:
+# qt@g.o
+# @BLURB: Eclass for Qt4-based packages, second edition.
+# @DESCRIPTION:
+# This eclass contains various functions that may be useful when
+# dealing with packages using Qt4 libraries. Supports only EAPIs
+# 2, 3, 4, and 5. Use qmake-utils.eclass in EAPI 6 and later.
+
+case ${EAPI} in
+	2|3|4|5) : ;;
+	6) die "qt4-r2.eclass is banned in EAPI 6 and later" ;;
+	*) die "qt4-r2.eclass: unsupported EAPI=${EAPI:-0}" ;;
+esac
+
+inherit base eutils qmake-utils
+
+export XDG_CONFIG_HOME="${T}"
+
+# @ECLASS-VARIABLE: DOCS
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Array containing documents passed to dodoc command.
+# Paths can be absolute or relative to ${S}.
+#
+# Example: DOCS=( ChangeLog README "${WORKDIR}/doc_folder/" )
+
+# @ECLASS-VARIABLE: HTML_DOCS
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Array containing documents passed to dohtml command.
+# Paths can be absolute or relative to ${S}.
+#
+# Example: HTML_DOCS=( "doc/document.html" "${WORKDIR}/html_folder/" )
+
+# @ECLASS-VARIABLE: LANGS
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# In case your Qt4 application provides various translations, use this variable
+# to specify them in order to populate "linguas_*" IUSE automatically. Make sure
+# that you set this variable before inheriting qt4-r2 eclass.
+#
+# Example: LANGS="de el it ja"
+for x in ${LANGS}; do
+	IUSE+=" linguas_${x}"
+done
+
+# @ECLASS-VARIABLE: LANGSLONG
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Same as LANGS, but this variable is for LINGUAS that must be in long format.
+# Remember to set this variable before inheriting qt4-r2 eclass.
+# Look at ${PORTDIR}/profiles/desc/linguas.desc for details.
+#
+# Example: LANGSLONG="en_GB ru_RU"
+for x in ${LANGSLONG}; do
+	IUSE+=" linguas_${x%_*}"
+done
+unset x
+
+# @ECLASS-VARIABLE: PATCHES
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Array variable containing all the patches to be applied. This variable
+# is expected to be defined in the global scope of ebuilds. Make sure to
+# specify the full path. This variable is used in src_prepare phase.
+#
+# Example:
+# @CODE
+# PATCHES=(
+# 	"${FILESDIR}/mypatch.patch"
+# 	"${FILESDIR}/mypatch2.patch"
+# )
+# @CODE
+
+# @FUNCTION: qt4-r2_src_unpack
+# @DESCRIPTION:
+# Default src_unpack function for packages that depend on qt4. If you have to
+# override src_unpack in your ebuild (probably you don't need to), call
+# qt4-r2_src_unpack in it.
+qt4-r2_src_unpack() {
+	debug-print-function $FUNCNAME "$@"
+
+	base_src_unpack "$@"
+}
+
+# @FUNCTION: qt4-r2_src_prepare
+# @DESCRIPTION:
+# Default src_prepare function for packages that depend on qt4. If you have to
+# override src_prepare in your ebuild, you should call qt4-r2_src_prepare in it,
+# otherwise autopatcher will not work!
+qt4-r2_src_prepare() {
+	debug-print-function $FUNCNAME "$@"
+
+	base_src_prepare "$@"
+}
+
+# @FUNCTION: qt4-r2_src_configure
+# @DESCRIPTION:
+# Default src_configure function for packages that depend on qt4. If you have to
+# override src_configure in your ebuild, call qt4-r2_src_configure in it.
+qt4-r2_src_configure() {
+	debug-print-function $FUNCNAME "$@"
+
+	local project_file=$(qmake-utils_find_pro_file)
+
+	if [[ -n ${project_file} ]]; then
+		eqmake4 "${project_file}"
+	else
+		base_src_configure "$@"
+	fi
+}
+
+# @FUNCTION: qt4-r2_src_compile
+# @DESCRIPTION:
+# Default src_compile function for packages that depend on qt4. If you have to
+# override src_compile in your ebuild (probably you don't need to), call
+# qt4-r2_src_compile in it.
+qt4-r2_src_compile() {
+	debug-print-function $FUNCNAME "$@"
+
+	base_src_compile "$@"
+}
+
+# @FUNCTION: qt4-r2_src_install
+# @DESCRIPTION:
+# Default src_install function for qt4-based packages. Installs compiled code,
+# and documentation (via DOCS and HTML_DOCS variables).
+qt4-r2_src_install() {
+	debug-print-function $FUNCNAME "$@"
+
+	base_src_install INSTALL_ROOT="${D}" "$@"
+	einstalldocs
+}
+
+EXPORT_FUNCTIONS src_unpack src_prepare src_configure src_compile src_install