qemu: add gtk option

srcpkgs/qemu/template

@@ -1,7 +1,7 @@
 # Template file for 'qemu'
 pkgname=qemu
 version=2.1.0
-revision=3
+revision=4
 short_desc="Open Source Processor Emulator"
 maintainer="Juan RP <xtraeme@gmail.com>"
 homepage="http://qemu.org"
@@ -19,6 +19,13 @@ makedepends="libpng-devel>=1.6 libjpeg-turbo-devel pixman-devel
 depends="libusb>=1.0.15"
 conf_files="/etc/qemu/target-x86_64.conf"
 
+build_options="gtk"
+desc_option_gtk="Enable GTK display and use it by default"
+
+if [ "$build_option_gtk" ]; then
+    makedepends+=" gtk+-devel"
+fi
+
 do_configure() {
 	local args=
 
@@ -29,10 +36,17 @@ do_configure() {
 		export PKG_CONFIG=pkg-config
 		export LIBTOOL=libtool
 	fi
+
+    if [ "$build_option_gtk" ]; then
+        args+=" --enable-gtk"
+    else
+        args+=" --disable-gtk"
+    fi
+
 	./configure --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/libexec \
 		--enable-kvm --audio-drv-list=alsa,sdl,pa --disable-xen --enable-tpm \
 		--enable-vhost-net --enable-vnc-png --enable-vnc-tls --enable-virtfs \
-		--disable-gtk --enable-libusb --disable-glusterfs \
+		--enable-libusb --disable-glusterfs \
 		--enable-pie --localstatedir=/var --with-sdlabi=2.0 ${args}
 }
 do_build() {