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

[Davide Pesavento]

commit:     646a897c283518ca5825aea3eeee338dfe6bcbca
Author:     Davide Pesavento <pesa <AT> gentoo <DOT> org>
AuthorDate: Thu May 22 00:38:09 2014 +0000
Commit:     Davide Pesavento <pesa <AT> gentoo <DOT> org>
CommitDate: Thu May 22 01:05:09 2014 +0000
URL:        http://git.overlays.gentoo.org/gitweb/?p=proj/qt.git;a=commit;h=646a897c

[qt4-build-multilib.eclass] New multilib-compatible eclass for building Qt4.

For now it's just a copy of qt4-build.eclass with tons of cleanups, removal
of dead code and old cruft, and general function reorganization to improve
readability. Real multilib support will be added soon. See also bug 498010.

One major change of this eclass is that all Qt4 binaries are now installed
into '/usr/$(get_libdir)/qt4/bin', similarly to Qt5.

---
 eclass/qt4-build-multilib.eclass | 758 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 758 insertions(+)

diff --git a/eclass/qt4-build-multilib.eclass b/eclass/qt4-build-multilib.eclass
new file mode 100644
index 0000000..b35f334
--- /dev/null
+++ b/eclass/qt4-build-multilib.eclass
@@ -0,0 +1,758 @@
+# Copyright 1999-2014 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: $
+
+# @ECLASS: qt4-build-multilib.eclass
+# @MAINTAINER:
+# Qt herd <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 toolchain-funcs # TODO multilib-minimal
+
+HOMEPAGE="http://qt-project.org/ http://qt.digia.com/"
+LICENSE="|| ( LGPL-2.1 GPL-3 )"
+SLOT="4"
+
+case ${PV} in
+	4.?.9999)
+		QT4_BUILD_TYPE="live"
+		EGIT_REPO_URI=(
+			"git://gitorious.org/qt/qt.git"
+			"https://git.gitorious.org/qt/qt.git"
+		)
+		EGIT_BRANCH=${PV%.9999}
+		inherit git-r3
+		;;
+	*)
+		QT4_BUILD_TYPE="release"
+		MY_P=qt-everywhere-opensource-src-${PV/_/-}
+		SRC_URI="http://download.qt-project.org/official_releases/qt/${PV%.*}/${PV}/${MY_P}.tar.gz"
+		S=${WORKDIR}/${MY_P}
+		;;
+esac
+
+IUSE="aqua debug pch"
+[[ ${CATEGORY}/${PN} != dev-qt/qtxmlpatterns ]] && IUSE+=" +exceptions"
+
+DEPEND="virtual/pkgconfig"
+if [[ ${QT4_BUILD_TYPE} == live ]]; then
+	DEPEND+=" dev-lang/perl"
+fi
+
+EXPORT_FUNCTIONS pkg_setup src_unpack src_prepare src_configure src_compile src_install src_test pkg_postinst pkg_postrm
+
+# @FUNCTION: qt4-build-multilib_pkg_setup
+# @DESCRIPTION:
+# Sets up PATH and LD_LIBRARY_PATH.
+qt4-build-multilib_pkg_setup() {
+	# Warn users of possible breakage when downgrading to a previous release.
+	# Downgrading revisions within the same release is safe.
+	if has_version ">${CATEGORY}/${P}-r9999:4"; then
+		ewarn
+		ewarn "Downgrading Qt is completely unsupported and can break your system!"
+		ewarn
+	fi
+
+	PATH="${S}/bin${PATH:+:}${PATH}"
+	if [[ ${CHOST} != *-darwin* ]]; then
+		LD_LIBRARY_PATH="${S}/lib${LD_LIBRARY_PATH:+:}${LD_LIBRARY_PATH}"
+	else
+		DYLD_LIBRARY_PATH="${S}/lib${DYLD_LIBRARY_PATH:+:}${DYLD_LIBRARY_PATH}"
+	fi
+}
+
+# @ECLASS-VARIABLE: QT4_EXTRACT_DIRECTORIES
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Space-separated list including the directories that will be extracted from
+# Qt tarball.
+
+# @ECLASS-VARIABLE: QT4_TARGET_DIRECTORIES
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Arguments for build_target_directories. Takes the directories in which the
+# code should be compiled. This is a space-separated list.
+
+# @FUNCTION: qt4-build-multilib_src_unpack
+# @DESCRIPTION:
+# Unpacks the sources.
+qt4-build-multilib_src_unpack() {
+	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
+
+	if [[ ${CATEGORY}/${PN} == dev-qt/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 ${QT4_BUILD_TYPE} in
+		live)
+			git-r3_src_unpack
+			;;
+		release)
+			local tarball="${MY_P}.tar.gz" target= targets=
+			# On MacOS we need src/gui/kernel/qapplication_mac.mm for platform detection
+			for target in \
+				bin config.tests configure LICENSE.GPL3 LICENSE.LGPL mkspecs \
+				projects.pro qmake src/{qbase,qt_install,qt_targets}.pri \
+				$([[ ${CHOST} == *-apple-darwin* ]] && echo src/gui/kernel/qapplication_mac.mm) \
+				${QT4_EXTRACT_DIRECTORIES}
+			do
+				targets+="${MY_P}/${target} "
+			done
+
+			ebegin "Unpacking parts of ${tarball}:" ${targets//${MY_P}\/}
+			tar -xzf "${DISTDIR}"/${tarball} ${targets}
+			eend $? || die "failed to unpack"
+			;;
+	esac
+}
+
+# @ECLASS-VARIABLE: PATCHES
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# PATCHES array variable containing all various patches to be applied.
+# This variable is expected to be defined in global scope of ebuild.
+# Make sure to specify the full path. This variable is utilised in
+# src_prepare() phase.
+#
+# @CODE
+#   PATCHES=( "${FILESDIR}/mypatch.patch"
+#             "${FILESDIR}/patches_folder/" )
+# @CODE
+
+# @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() {
+	qt4_prepare_env
+
+	if [[ ${QT4_BUILD_TYPE} == live ]]; then
+		QTDIR="." ./bin/syncqt || die "syncqt failed"
+	fi
+
+	if [[ ${CATEGORY}/${PN} != dev-qt/qtcore ]]; then
+		skip_qmake_build
+		skip_project_generation
+		symlink_binaries_to_buildtree
+	fi
+
+	# skip X11 tests in non-gui packages to avoid spurious dependencies
+	if has ${PN} qtbearer qtcore qtdbus qtscript qtsql qttest qtxmlpatterns; then
+		sed -i -e '/^if.*PLATFORM_X11.*CFG_GUI/,/^fi$/d' configure || die
+	fi
+
+	if use aqua; then
+		# provide a proper macx-g++-64
+		use x64-macos && ln -s macx-g++ mkspecs/$(qt_mkspecs_dir)
+
+		sed -e '/^CONFIG/s:app_bundle::' \
+			-e '/^CONFIG/s:plugin_no_soname:plugin_with_soname absolute_library_soname:' \
+			-i mkspecs/$(qt_mkspecs_dir)/qmake.conf || die
+	fi
+
+	# Bug 261632
+	if use ppc64; then
+		append-flags -mminimal-toc
+	fi
+
+	# 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 417105
+	# graphite on gcc 4.7 causes miscompilations
+	if [[ $(gcc-version) == "4.7" ]]; then
+		filter-flags -fgraphite-identity
+	fi
+
+	# Respect CC, CXX, {C,CXX,LD}FLAGS in .qmake.cache
+	sed -e "/^SYSTEM_VARIABLES=/i \
+		CC='$(tc-getCC)'\n\
+		CXX='$(tc-getCXX)'\n\
+		CFLAGS='${CFLAGS}'\n\
+		CXXFLAGS='${CXXFLAGS}'\n\
+		LDFLAGS='${LDFLAGS}'\n\
+		QMakeVar set QMAKE_CFLAGS_RELEASE\n\
+		QMakeVar set QMAKE_CFLAGS_DEBUG\n\
+		QMakeVar set QMAKE_CXXFLAGS_RELEASE\n\
+		QMakeVar set QMAKE_CXXFLAGS_DEBUG\n\
+		QMakeVar set QMAKE_LFLAGS_RELEASE\n\
+		QMakeVar set QMAKE_LFLAGS_DEBUG\n"\
+		-i configure \
+		|| die "sed SYSTEM_VARIABLES failed"
+
+	# Respect CC, CXX, LINK and *FLAGS in config.tests
+	find config.tests/unix -name '*.test' -type f -print0 | xargs -0 \
+		sed -i -e "/bin\/qmake/ s: \"\$SRCDIR/: \
+			'QMAKE_CC=$(tc-getCC)'    'QMAKE_CXX=$(tc-getCXX)'      'QMAKE_LINK=$(tc-getCXX)' \
+			'QMAKE_CFLAGS+=${CFLAGS}' 'QMAKE_CXXFLAGS+=${CXXFLAGS}' 'QMAKE_LFLAGS+=${LDFLAGS}'&:" \
+		|| die "sed config.tests failed"
+
+	# Bug 172219
+	sed -e 's:/X11R6/:/:' -i mkspecs/$(qt_mkspecs_dir)/qmake.conf || die
+
+	if [[ ${CHOST} == *-darwin* ]]; then
+		# Set FLAGS *and* remove -arch, since our gcc-apple is multilib
+		# crippled (by design) :/
+		local mac_gpp_conf=
+		if [[ -f mkspecs/common/mac-g++.conf ]]; then
+			# qt < 4.8 has mac-g++.conf
+			mac_gpp_conf="mkspecs/common/mac-g++.conf"
+		elif [[ -f mkspecs/common/g++-macx.conf ]]; then
+			# qt >= 4.8 has g++-macx.conf
+			mac_gpp_conf="mkspecs/common/g++-macx.conf"
+		else
+			die "no known conf file for mac found"
+		fi
+		sed \
+			-e "s:QMAKE_CFLAGS_RELEASE.*=.*:QMAKE_CFLAGS_RELEASE=${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" \
+			-i ${mac_gpp_conf} \
+			|| die "sed ${mac_gpp_conf} failed"
+
+		# Fix configure's -arch settings that appear in qmake/Makefile and also
+		# fix arch handling (automagically duplicates our -arch arg and breaks
+		# pch). Additionally disable Xarch support.
+		local mac_gcc_confs="${mac_gpp_conf}"
+		if [[ -f mkspecs/common/gcc-base-macx.conf ]]; then
+			mac_gcc_confs+=" mkspecs/common/gcc-base-macx.conf"
+		fi
+		sed \
+			-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" \
+			-i configure ${mac_gcc_confs} \
+			|| die "sed -arch/-Xarch failed"
+
+		# On Snow Leopard don't fall back to 10.5 deployment target.
+		if [[ ${CHOST} == *-apple-darwin10 ]]; then
+			sed -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" \
+				-i configure ${mac_gpp_conf} \
+				|| die "sed deployment target failed"
+		fi
+	fi
+
+	# this is needed for all systems with a separate -liconv, except
+	# Darwin, for which the sources already cater for -liconv
+	if use !elibc_glibc && [[ ${CHOST} != *-darwin* ]]; then
+		sed -e 's|mac:\(LIBS += -liconv\)|\1|g' \
+			-i config.tests/unix/iconv/iconv.pro \
+			|| die "sed iconv.pro failed"
+	fi
+
+	# we need some patches for Solaris
+	sed -i -e '/^QMAKE_LFLAGS_THREAD/a\QMAKE_LFLAGS_DYNAMIC_LIST = -Wl,--dynamic-list,' \
+		mkspecs/$(qt_mkspecs_dir)/qmake.conf || die
+	# use GCC over SunStudio
+	sed -i -e '/PLATFORM=solaris-cc/s/cc/g++/' configure || die
+	# do not flirt with non-Prefix stuff, we're quite possessive
+	sed -i -e '/^QMAKE_\(LIB\|INC\)DIR\(_X11\|_OPENGL\|\)\t/s/=.*$/=/' \
+		mkspecs/$(qt_mkspecs_dir)/qmake.conf || die
+
+	# apply patches
+	[[ ${PATCHES[@]} ]] && epatch "${PATCHES[@]}"
+	debug-print "$FUNCNAME: applying user patches"
+	epatch_user
+}
+
+# @FUNCTION: qt4-build-multilib_src_configure
+# @DESCRIPTION:
+# Runs configure and generates Makefiles for all QT4_TARGET_DIRECTORIES.
+qt4-build-multilib_src_configure() {
+	# configure arguments
+	local conf="
+		-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}
+		-opensource -confirm-license
+		-shared -fast -largefile -stl -verbose
+		-nomake examples -nomake demos"
+
+	# Convert tc-arch to the values supported by Qt
+	case $(tc-arch) in
+		amd64|x64-*)		  conf+=" -arch x86_64" ;;
+		ppc*-macos)		  conf+=" -arch ppc" ;;
+		ppc*)			  conf+=" -arch powerpc" ;;
+		sparc*)			  conf+=" -arch sparc" ;;
+		x86-macos)		  conf+=" -arch x86" ;;
+		x86*)			  conf+=" -arch i386" ;;
+		alpha|arm|ia64|mips|s390) conf+=" -arch $(tc-arch)" ;;
+		hppa|sh)		  conf+=" -arch generic" ;;
+		*) die "$(tc-arch) is unsupported by this eclass. Please file a bug." ;;
+	esac
+
+	conf+=" -platform $(qt_mkspecs_dir)"
+
+	# debug/release
+	if use debug; then
+		conf+=" -debug"
+	else
+		conf+=" -release"
+	fi
+	conf+=" -no-separate-debug-info"
+
+	# exceptions USE flag
+	conf+=" $(in_iuse exceptions && qt_use exceptions || echo -exceptions)"
+
+	# disable rpath (bug 380415), except on prefix (bug 417169)
+	use prefix || conf+=" -no-rpath"
+
+	# precompiled headers don't work on hardened, where the flag is masked
+	conf+=" $(qt_use pch)"
+
+	# -reduce-relocations
+	# 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" on Solaris.
+	#   -- Daniel Vergien
+	[[ ${CHOST} != *-solaris* ]] && conf+=" -reduce-relocations"
+
+	# this one is needed for all systems with a separate -liconv, apart from
+	# Darwin, for which the sources already cater for -liconv
+	if use !elibc_glibc && [[ ${CHOST} != *-darwin* ]]; then
+		conf+=" -liconv"
+	fi
+
+	if use aqua; then
+		# On (snow) leopard use the new (frameworked) cocoa code.
+		if [[ ${CHOST##*-darwin} -ge 9 ]]; then
+			conf+=" -cocoa -framework"
+			# We need the source's headers, not the installed ones.
+			conf+=" -I${S}/include"
+			# Add hint for the framework location.
+			conf+=" -F${QT4_LIBDIR}"
+
+			# We are crazy and build cocoa + qt3support :-)
+			if use qt3support; then
+				sed -e "/case \"\$PLATFORM,\$CFG_MAC_COCOA\" in/,/;;/ s|CFG_QT3SUPPORT=\"no\"|CFG_QT3SUPPORT=\"yes\"|" \
+					-i configure || die
+			fi
+		else
+			conf+=" -no-framework"
+		fi
+	fi
+
+	conf+=" ${myconf}"
+	myconf=
+
+	einfo "Configuring with:" ${conf}
+	./configure ${conf} || die "configure failed"
+
+	local dir
+	for dir in ${QT4_TARGET_DIRECTORIES}; do
+		pushd ${dir} >/dev/null || die
+		einfo "Running qmake in: ${dir}"
+		"${S}"/bin/qmake \
+			"LIBS+=-L${QT4_LIBDIR}" \
+			"CONFIG+=nostrip" \
+			|| die "qmake failed"
+		popd >/dev/null || die
+	done
+}
+
+# @FUNCTION: qt4-build-multilib_src_compile
+# @DESCRIPTION:
+# Compiles the code in QT4_TARGET_DIRECTORIES.
+qt4-build-multilib_src_compile() {
+	local dir
+	for dir in ${QT4_TARGET_DIRECTORIES}; do
+		pushd ${dir} >/dev/null || die
+		emake \
+			AR="$(tc-getAR) cqs" \
+			CC="$(tc-getCC)" \
+			CXX="$(tc-getCXX)" \
+			LINK="$(tc-getCXX)" \
+			RANLIB=":" \
+			STRIP=":"
+		popd >/dev/null || die
+	done
+}
+
+# @FUNCTION: qt4-build-multilib_src_test
+# @DESCRIPTION:
+# Runs tests only in target directories.
+qt4-build-multilib_src_test() {
+	# QtMultimedia does not have any test suite (bug #332299)
+	[[ ${CATEGORY}/${PN} == dev-qt/qtmultimedia ]] && return
+
+	local dir
+	for dir in ${QT4_TARGET_DIRECTORIES}; do
+		emake -j1 check -C ${dir}
+	done
+}
+
+# @FUNCTION: qt4-build-multilib_src_install
+# @DESCRIPTION:
+# Perform the actual installation including some library fixes.
+qt4-build-multilib_src_install() {
+	install_directories ${QT4_TARGET_DIRECTORIES}
+	install_qconfigs
+	fix_library_files
+	fix_includes
+
+	# remove .la files since we are building only shared libraries
+	prune_libtool_files
+}
+
+# @FUNCTION: qt4-build-multilib_pkg_postinst
+# @DESCRIPTION:
+# Regenerate configuration, plus throw a message about possible
+# breakages and proposed solutions.
+qt4-build-multilib_pkg_postinst() {
+	generate_qconfigs
+}
+
+# @FUNCTION: qt4-build-multilib_pkg_postrm
+# @DESCRIPTION:
+# Regenerate configuration when the package is completely removed.
+qt4-build-multilib_pkg_postrm() {
+	generate_qconfigs
+}
+
+# @FUNCTION: qt_use
+# @USAGE: <flag> [feature] [enableval]
+# @DESCRIPTION:
+# This will echo "-${enableval}-${feature}" if <flag> is enabled, or
+# "-no-${feature}" if it's disabled. If [feature] is not specified,
+# <flag> will be used for that. If [enableval] is not specified, the
+# "-${enableval}" prefix is omitted.
+qt_use() {
+	use "$1" && echo "${3:+-$3}-${2:-$1}" || echo "-no-${2:-$1}"
+}
+
+
+######  Internal functions  ######
+
+# @FUNCTION: qt4_prepare_env
+# @INTERNAL
+# @DESCRIPTION:
+# Prepares the environment for building Qt.
+qt4_prepare_env() {
+	# setup installation directories
+	QT4_PREFIX=${EPREFIX}/usr
+	QT4_HEADERDIR=${QT4_PREFIX}/include/qt4
+	QT4_LIBDIR=${QT4_PREFIX}/$(get_libdir)/qt4
+	QT4_PCDIR=${QT4_PREFIX}/$(get_libdir)/pkgconfig
+	QT4_BINDIR=${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=${EPREFIX}/etc/qt4
+	QMAKE_LIBDIR_QT=${QT4_LIBDIR}
+
+	PLATFORM=$(qt_mkspecs_dir)
+	unset QMAKESPEC
+
+	export XDG_CONFIG_HOME="${T}"
+}
+
+# @FUNCTION: install_directories
+# @USAGE: < directories >
+# @INTERNAL
+# @DESCRIPTION:
+# Runs emake install in the given directories, which are separated by spaces.
+install_directories() {
+	for x in "$@"; do
+		pushd "${S}"/${x} >/dev/null || die
+		emake INSTALL_ROOT="${D}" install
+		popd >/dev/null || die
+	done
+}
+
+# @ECLASS-VARIABLE: QCONFIG_ADD
+# @DESCRIPTION:
+# List options that need to be added to QT_CONFIG in qconfig.pri
+: ${QCONFIG_ADD:=}
+
+# @ECLASS-VARIABLE: QCONFIG_REMOVE
+# @DESCRIPTION:
+# List options that need to be removed from QT_CONFIG in qconfig.pri
+: ${QCONFIG_REMOVE:=}
+
+# @ECLASS-VARIABLE: QCONFIG_DEFINE
+# @DESCRIPTION:
+# List variables that should be defined at the top of QtCore/qconfig.h
+: ${QCONFIG_DEFINE:=}
+
+# @FUNCTION: install_qconfigs
+# @INTERNAL
+# @DESCRIPTION:
+# Install gentoo-specific mkspecs configurations.
+install_qconfigs() {
+	local x
+	if [[ -n ${QCONFIG_ADD} || -n ${QCONFIG_REMOVE} ]]; then
+		for x in QCONFIG_ADD QCONFIG_REMOVE; do
+			[[ -n ${!x} ]] && echo ${x}=${!x} >> "${T}"/${PN}-qconfig.pri
+		done
+		insinto ${QT4_DATADIR#${EPREFIX}}/mkspecs/gentoo
+		doins "${T}"/${PN}-qconfig.pri
+	fi
+
+	if [[ -n ${QCONFIG_DEFINE} ]]; then
+		for x in ${QCONFIG_DEFINE}; do
+			echo "#define ${x}" >> "${T}"/gentoo-${PN}-qconfig.h
+		done
+		insinto ${QT4_HEADERDIR#${EPREFIX}}/Gentoo
+		doins "${T}"/gentoo-${PN}-qconfig.h
+	fi
+}
+
+# @FUNCTION: generate_qconfigs
+# @INTERNAL
+# @DESCRIPTION:
+# Generates gentoo-specific qconfig.{h,pri}.
+generate_qconfigs() {
+	if [[ -n ${QCONFIG_ADD} || -n ${QCONFIG_REMOVE} || -n ${QCONFIG_DEFINE} || ${CATEGORY}/${PN} == dev-qt/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
+
+		# these error checks do not use die because dying in pkg_post{inst,rm}
+		# just makes things worse.
+		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: skip_qmake_build
+# @INTERNAL
+# @DESCRIPTION:
+# Patches configure to skip qmake compilation, as it's already installed by qtcore.
+skip_qmake_build() {
+	sed -i -e "s:if true:if false:g" "${S}"/configure || die
+}
+
+# @FUNCTION: skip_project_generation
+# @INTERNAL
+# @DESCRIPTION:
+# Exit the script early by throwing in an exit before all of the .pro files are scanned.
+skip_project_generation() {
+	sed -i -e "s:echo \"Finding:exit 0\n\necho \"Finding:g" "${S}"/configure || die
+}
+
+# @FUNCTION: symlink_binaries_to_buildtree
+# @INTERNAL
+# @DESCRIPTION:
+# Symlinks generated binaries to buildtree, so they can be used during compilation time.
+symlink_binaries_to_buildtree() {
+	for bin in qmake moc uic rcc; do
+		ln -s "${QT4_BINDIR}"/${bin} "${S}"/bin/ || die "symlinking ${bin} to ${S}/bin failed"
+	done
+}
+
+# @FUNCTION: fix_library_files
+# @INTERNAL
+# @DESCRIPTION:
+# Fixes the paths in *.la, *.prl, *.pc, as they are wrong due to sandbox and
+# moves the *.pc files into the pkgconfig directory.
+fix_library_files() {
+	local libfile
+	for libfile in "${D}"/${QT4_LIBDIR}/{*.la,*.prl,pkgconfig/*.pc}; do
+		if [[ -e ${libfile} ]]; then
+			sed -i -e "s:${S}/lib:${QT4_LIBDIR}:g" ${libfile} || die "sed on ${libfile} failed"
+		fi
+	done
+
+	# pkgconfig files refer to WORKDIR/bin as the moc and uic locations
+	for libfile in "${D}"/${QT4_LIBDIR}/pkgconfig/*.pc; do
+		if [[ -e ${libfile} ]]; then
+			sed -i -e "s:${S}/bin:${QT4_BINDIR}:g" ${libfile} || die "sed on ${libfile} failed"
+
+		# Move .pc files into the pkgconfig directory
+		dodir ${QT4_PCDIR#${EPREFIX}}
+		mv ${libfile} "${D}"/${QT4_PCDIR}/ || die "moving ${libfile} to ${D}/${QT4_PCDIR}/ failed"
+		fi
+	done
+
+	# Don't install an empty directory
+	rmdir "${D}"/${QT4_LIBDIR}/pkgconfig
+}
+
+# @FUNCTION: fix_includes
+# @DESCRIPTION:
+# For MacOS X we need to add some symlinks when frameworks are
+# being used, to avoid complications with some more or less stupid packages.
+fix_includes() {
+	if use 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/${h}
+			done
+		done
+	fi
+}
+
+# @FUNCTION: qt_mkspecs_dir
+# @RETURN: the specs-directory w/o path
+# @INTERNAL
+# @DESCRIPTION:
+# Allows us to define which mkspecs dir we want to use.
+qt_mkspecs_dir() {
+	local spec=
+
+	case "${CHOST}" in
+		*-freebsd*|*-dragonfly*)
+			spec=freebsd ;;
+		*-openbsd*)
+			spec=openbsd ;;
+		*-netbsd*)
+			spec=netbsd ;;
+		*-darwin*)
+			if use aqua; then
+				# mac with carbon/cocoa
+				spec=macx
+			else
+				# darwin/mac with x11
+				spec=darwin
+			fi
+			;;
+		*-solaris*)
+			spec=solaris ;;
+		*-linux-*|*-linux)
+			spec=linux ;;
+		*)
+			die "${FUNCNAME}(): Unknown CHOST '${CHOST}'" ;;
+	esac
+
+	case "$(tc-getCXX)" in
+		*g++*)
+			spec+=-g++ ;;
+		*icpc*)
+			spec+=-icc ;;
+		*clang*)
+			spec+=-clang ;;
+		*)
+			die "${FUNCNAME}(): Unknown compiler '$(tc-getCXX)'" ;;
+	esac
+
+	# Add -64 for 64bit profiles
+	if use x64-freebsd ||
+		use amd64-linux ||
+		use x64-macos ||
+		use x64-solaris ||
+		use sparc64-solaris
+	then
+		spec+=-64
+	fi
+
+	echo "${spec}"
+}