dev-qt/qtwebengine: fix detecting audio backends

The upstream change doesn't really work for us, so we'll make
it work with us.

http://code.qt.io/cgit/qt/qtwebengine.git/commit/?id=cf7d82a79dff4ea5c53e0908ed5c13ce1f87796d

Closes: https://github.com/gentoo/gentoo/pull/3219
Gentoo-Bug: https://bugs.gentoo.org/603498
Package-Manager: Portage-2.3.3, Repoman-2.3.1

dev-qt/qtwebengine/files/qtwebengine-5.7.1-fix-audio-detection.patch

@@ -0,0 +1,23 @@
+# dev-qt/qtwebengine: Fix detecting audio backends.
+
+# The upstream change doesn't really work for us, so we'll make
+# it work with us.
+# Gentoo-Bug: https://bugs.gentoo.org/603498
+
+--- /src/core/config/linux.pri	2016-12-23 00:05:41.057955774 +0200
++++ /src/core/config/linux.pri	2016-12-23 00:09:39.000573909 +0200
+@@ -35,12 +35,12 @@
+ contains(QT_CONFIG, system-png): GYP_CONFIG += use_system_libpng=1
+ contains(QT_CONFIG, system-jpeg): GYP_CONFIG += use_system_libjpeg=1
+ contains(QT_CONFIG, system-harfbuzz): GYP_CONFIG += use_system_harfbuzz=1
+-contains(QT_CONFIG, pulseaudio) {
++use?(pulseaudio) {
+     GYP_CONFIG += use_pulseaudio=1
+ } else {
+     GYP_CONFIG += use_pulseaudio=0
+ }
+-contains(QT_CONFIG, alsa) {
++use?(alsa) {
+     GYP_CONFIG += use_alsa=1
+ } else {
+     GYP_CONFIG += use_alsa=0

dev-qt/qtwebengine/qtwebengine-5.7.1-r1.ebuild

@@ -0,0 +1,117 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI=6
+PYTHON_COMPAT=( python2_7 )
+inherit pax-utils python-any-r1 qt5-build
+
+DESCRIPTION="Library for rendering dynamic web content in Qt5 C++ and QML applications"
+
+if [[ ${QT5_BUILD_TYPE} == release ]]; then
+	KEYWORDS="~amd64 ~x86"
+fi
+
+IUSE="alsa bindist geolocation pax_kernel pulseaudio +system-ffmpeg +system-icu widgets"
+
+RDEPEND="
+	app-arch/snappy
+	dev-libs/glib:2
+	dev-libs/nspr
+	dev-libs/nss
+	~dev-qt/qtcore-${PV}
+	~dev-qt/qtdeclarative-${PV}
+	~dev-qt/qtgui-${PV}
+	~dev-qt/qtnetwork-${PV}
+	~dev-qt/qtwebchannel-${PV}[qml]
+	dev-libs/expat
+	dev-libs/jsoncpp:=
+	dev-libs/libevent:=
+	dev-libs/libxml2
+	dev-libs/libxslt
+	dev-libs/protobuf:=
+	media-libs/flac
+	media-libs/fontconfig
+	media-libs/freetype
+	media-libs/harfbuzz:=
+	media-libs/libpng:0=
+	>=media-libs/libvpx-1.5:=[svc]
+	media-libs/libwebp:=
+	media-libs/mesa
+	media-libs/opus
+	media-libs/speex
+	net-libs/libsrtp:0=
+	sys-apps/dbus
+	sys-apps/pciutils
+	sys-libs/libcap
+	sys-libs/zlib[minizip]
+	x11-libs/libdrm
+	x11-libs/libX11
+	x11-libs/libXcomposite
+	x11-libs/libXcursor
+	x11-libs/libXdamage
+	x11-libs/libXext
+	x11-libs/libXfixes
+	x11-libs/libXi
+	x11-libs/libXrandr
+	x11-libs/libXrender
+	x11-libs/libXScrnSaver
+	x11-libs/libXtst
+	alsa? ( media-libs/alsa-lib )
+	geolocation? ( ~dev-qt/qtpositioning-${PV} )
+	pulseaudio? ( media-sound/pulseaudio:= )
+	system-ffmpeg? ( media-video/ffmpeg:0= )
+	system-icu? ( dev-libs/icu:= )
+	widgets? ( ~dev-qt/qtwidgets-${PV} )
+"
+DEPEND="${RDEPEND}
+	${PYTHON_DEPS}
+	dev-util/gperf
+	dev-util/ninja
+	dev-util/re2c
+	sys-devel/bison
+	pax_kernel? ( sys-apps/elfix )
+"
+
+PATCHES=(
+	"${FILESDIR}/${PN}-5.7.1-fix-audio-detection.patch"
+	"${FILESDIR}/${PN}-5.7.0-fix-system-ffmpeg.patch"
+	"${FILESDIR}/${PN}-5.7.0-icu58.patch"
+	"${FILESDIR}/${PN}-5.7.0-undef-madv_free.patch"
+)
+
+src_prepare() {
+	use pax_kernel && PATCHES+=( "${FILESDIR}/${PN}-paxmark-mksnapshot.patch" )
+
+	if use system-icu; then
+		# ensure build against system headers - bug #601264
+		rm -r src/3rdparty/chromium/third_party/icu/source || die
+	fi
+
+	qt_use_disable_mod geolocation positioning \
+		src/core/core_common.pri \
+		src/core/core_gyp_generator.pro
+
+	qt_use_disable_mod widgets widgets src/src.pro
+
+	qt5-build_src_prepare
+}
+
+src_configure() {
+	export NINJA_PATH=/usr/bin/ninja
+
+	local myqmakeargs=(
+		$(usex alsa 'WEBENGINE_CONFIG+=use_alsa' '')
+		$(usex bindist '' 'WEBENGINE_CONFIG+=use_proprietary_codecs')
+		$(usex pulseaudio 'WEBENGINE_CONFIG+=use_pulseaudio' '')
+		$(usex system-ffmpeg 'WEBENGINE_CONFIG+=use_system_ffmpeg' '')
+		$(usex system-icu 'WEBENGINE_CONFIG+=use_system_icu' '')
+	)
+	qt5-build_src_configure
+}
+
+src_install() {
+	qt5-build_src_install
+
+	pax-mark m "${D%/}${QT5_LIBEXECDIR}"/QtWebEngineProcess
+}