x11-wm/mutter: fix dependencies and option combinations

Checked with upstream, native backend without wayland is not useful and
the opposite would have limited use.

See upstream reports for not enabling these possibilities anyway:
https://bugzilla.gnome.org/show_bug.cgi?id=771638
https://bugzilla.gnome.org/show_bug.cgi?id=772681

Gentoo-bug: 598846

Package-Manager: portage-2.3.2

x11-wm/mutter/metadata.xml

@@ -6,6 +6,7 @@
 		<name>Gentoo GNOME Desktop</name>
 	</maintainer>
 	<use>
+		<flag name="gles2">Enable OpenGL ES 2.0 support</flag>
 		<flag name="kms">Enable KMS support.</flag>
 	</use>
 </pkgmetadata>

x11-wm/mutter/mutter-3.22.1.ebuild

@@ -3,7 +3,7 @@
 # $Id$
 
 EAPI=6
-inherit gnome2
+inherit gnome2 virtualx
 
 DESCRIPTION="GNOME 3 compositing window manager based on Clutter"
 HOMEPAGE="https://git.gnome.org/browse/mutter/"
@@ -11,10 +11,7 @@ HOMEPAGE="https://git.gnome.org/browse/mutter/"
 LICENSE="GPL-2+"
 SLOT="0"
 
-IUSE="input_devices_wacom +introspection +kms test udev wayland"
-REQUIRED_USE="
-	wayland? ( kms )
-"
+IUSE="debug gles2 input_devices_wacom +introspection test udev wayland"
 
 KEYWORDS="~alpha ~amd64 ~arm ~ia64 ~ppc ~ppc64 ~sparc ~x86"
 
@@ -22,12 +19,12 @@ KEYWORDS="~alpha ~amd64 ~arm ~ia64 ~ppc ~ppc64 ~sparc ~x86"
 # https://bugzilla.gnome.org/show_bug.cgi?id=738944
 COMMON_DEPEND="
 	>=dev-libs/atk-2.5.3
+	>=x11-libs/gdk-pixbuf-2:2
 	>=dev-libs/json-glib-0.12.0
-	>=x11-libs/pango-1.2[X,introspection?]
-	>=x11-libs/cairo-1.10[X]
+	>=x11-libs/pango-1.30[X,introspection?]
+	>=x11-libs/cairo-1.14[X]
 	>=x11-libs/gtk+-3.19.8:3[X,introspection?]
 	>=dev-libs/glib-2.49.0:2[dbus]
-	>=media-libs/cogl-1.21.2:1.0=[introspection?]
 	>=media-libs/libcanberra-0.26[gtk3]
 	>=x11-libs/startup-notification-0.7
 	>=x11-libs/libXcomposite-0.2
@@ -38,11 +35,11 @@ COMMON_DEPEND="
 	x11-libs/libICE
 	x11-libs/libSM
 	x11-libs/libX11
-	>=x11-libs/libXcomposite-0.2
+	>=x11-libs/libXcomposite-0.4
 	x11-libs/libXcursor
 	x11-libs/libXdamage
 	x11-libs/libXext
-	x11-libs/libXfixes
+	>=x11-libs/libXfixes-3
 	>=x11-libs/libXi-1.7.4
 	x11-libs/libXinerama
 	>=x11-libs/libXrandr-1.5
@@ -53,21 +50,23 @@ COMMON_DEPEND="
 	x11-misc/xkeyboard-config
 
 	gnome-extra/zenity
+	media-libs/mesa[egl]
 
+	gles2? ( media-libs/mesa[gles2] )
 	input_devices_wacom? ( >=dev-libs/libwacom-0.13 )
 	introspection? ( >=dev-libs/gobject-introspection-1.42:= )
-	kms? (
-		>=dev-libs/libinput-1.4
-		media-libs/cogl:1.0=[kms]
-		>=media-libs/mesa-10.3[gbm]
-		sys-apps/systemd
-		virtual/libgudev
-		x11-libs/libdrm:= )
 	udev? ( virtual/libgudev:= )
 	wayland? (
+		>=dev-libs/libinput-1.4
 		>=dev-libs/wayland-1.6.90
 		>=dev-libs/wayland-protocols-1.7
-		x11-base/xorg-server[wayland] )
+		>=media-libs/mesa-10.3[egl,gbm,wayland]
+		sys-apps/systemd
+		virtual/libgudev:=
+		>=virtual/libudev-136:=
+		x11-base/xorg-server[wayland]
+		x11-libs/libdrm:=
+	)
 "
 DEPEND="${COMMON_DEPEND}
 	>=sys-devel/gettext-0.19.6
@@ -81,16 +80,56 @@ RDEPEND="${COMMON_DEPEND}
 	!x11-misc/expocity
 "
 
+src_prepare() {
+	# Disable building of noinst_PROGRAM for tests
+	if ! use test; then
+		sed -e '/^noinst_PROGRAMS/d' \
+			-i cogl/tests/conform/Makefile.{am,in} || die
+		sed -e '/noinst_PROGRAMS += testboxes/d' \
+			-i src/Makefile-tests.am || die
+		sed -e '/noinst_PROGRAMS/ s/testboxes$(EXEEXT)//' \
+			-i src/Makefile.in || die
+	fi
+
+	gnome2_src_prepare
+
+	# Leave the damn CFLAGS alone
+	sed -e 's/$CFLAGS -g/$CFLAGS /' \
+		-i clutter/configure || die
+	sed -e 's/$CFLAGS -g -O0/$CFLAGS /' \
+		-i cogl/configure || die
+	sed -e 's/$CFLAGS -g -O/$CFLAGS /' \
+		-i configure || die
+}
+
 src_configure() {
+	# Prefer gl driver by default
+	# GLX is forced by mutter but optional in clutter
+	# xlib-egl-platform required by mutter x11 backend
+	# native backend without wayland is useless
 	gnome2_src_configure \
 		--disable-static \
+		--enable-compile-warnings=minimum \
+		--enable-gl \
+		--enable-glx \
 		--enable-sm \
 		--enable-startup-notification \
 		--enable-verbose-mode \
+		--enable-xlib-egl-platform \
+		--with-default-driver=gl \
 		--with-libcanberra \
+		$(usex debug --enable-debug=yes "") \
+		$(use_enable gles2)        \
+		$(use_enable gles2 cogl-gles2) \
 		$(use_enable introspection) \
-		$(use_enable kms native-backend) \
 		$(use_enable wayland) \
+		$(use_enable wayland kms-egl-platform) \
+		$(use_enable wayland native-backend) \
+		$(use_enable wayland wayland-egl-server) \
 		$(use_with input_devices_wacom libwacom) \
 		$(use_with udev gudev)
 }
+
+src_test() {
+	virtx emake check
+}