Add support for building classic images using makefile-based gadget trees.

debian/control

@@ -23,6 +23,7 @@ Depends: ${misc:Depends},
          live-build (>= 3.0~a57-1ubuntu31~),
          lsb-release,
          lzma,
+         make,
          parted,
          procps,
          python-minimal | python,
@@ -32,7 +33,8 @@ Depends: ${misc:Depends},
          rsync,
          snapd,
          squashfs-tools (>= 1:3.3-1),
-         sudo,
+         sudo
+         u-boot-tools [armhf arm64],
          ubuntu-image,
          vmdk-stream-converter [amd64 i386],
          xz-utils,

live-build/auto/build

@@ -23,12 +23,26 @@ PREFIX="livecd.$PROJECT${SUBARCH:+-$SUBARCH}"
 if [ "${IMAGEFORMAT:-}" = "ubuntu-image" ]; then
 	# Use ubuntu-image instead of live-build
 
-	CHANNEL="${CHANNEL:-edge}"
-	env SNAPPY_STORE_NO_CDN=1 \
-	ubuntu-image -c "$CHANNEL" $UBUNTU_IMAGE_ARGS \
-		-o "$PREFIX".img "$PREFIX".model-assertion
-	xz -0 -T4 "$PREFIX".img
-	mv seed.manifest "$PREFIX".manifest
+	if [ "$PROJECT" = "ubuntu-core"]; then
+		CHANNEL="${CHANNEL:-edge}"
+		env SNAPPY_STORE_NO_CDN=1 \
+		ubuntu-image snap -c "$CHANNEL" $UBUNTU_IMAGE_ARGS \
+			-o "$PREFIX".img "$PREFIX".model-assertion
+		xz -0 -T4 "$PREFIX".img
+		mv seed.manifest "$PREFIX".manifest
+	else
+		# First we need to build the gadget tree
+		(
+			cd config/$PREFIX-gadget
+			make &&	make install
+		)
+		ubuntu-image classic $UBUNTU_IMAGE_ARGS \
+			-p $PROJECT -a $ARCH --subarch $SUBARCH \
+			-o "$PREFIX".img config/$PREFIX-gadget/install
+		xz -0 -T4 "$PREFIX".img
+		mv filesystem.manifest "$PREFIX".manifest
+	fi
+
 	exit 0
 fi
 

live-build/auto/config

@@ -179,28 +179,50 @@ case $IMAGEFORMAT in
 				exit 1
 				;;
 		esac
-		case $MODEL in
-			pc-amd64|pc-i386)
-				UBUNTU_IMAGE_ARGS="--image-size 3700M" ;;
-			*)
-				UBUNTU_IMAGE_ARGS="" ;;
-		esac
-		case $SUITE in
-			xenial)
-				# Ubuntu Core 16
-				;;
-			*)
-				# Ubuntu Core 18
-				MODEL="ubuntu-core-18-${MODEL#pc-}" ;;
-		esac
 
-		echo "IMAGEFORMAT=$IMAGEFORMAT" >> config/common
-		echo "UBUNTU_IMAGE_ARGS=\"$UBUNTU_IMAGE_ARGS\"" >> config/common
-		# Store model assertion in top dir to get it picked up later as a build artifact
-		env SNAPPY_STORE_NO_CDN=1 snap known --remote model series=16 model="$MODEL" brand-id=canonical > "$PREFIX".model-assertion
-		echo "Configured ubuntu-image for the following model assertion:"
-		cat "$PREFIX".model-assertion
-		echo "----------------------------------------------------------"
+		if [ $PROJECT = "ubuntu-core" ]; then
+			# snap-based core images
+
+			case $SUITE in
+				xenial)
+					# Ubuntu Core 16
+					;;
+				*)
+					# Ubuntu Core 18
+					MODEL="ubuntu-core-18-${MODEL#pc-}" ;;
+			esac
+			case $MODEL in
+				pc-amd64|pc-i386)
+					UBUNTU_IMAGE_ARGS="--image-size 3700M" ;;
+				*)
+					UBUNTU_IMAGE_ARGS="" ;;
+			esac
+
+			echo "IMAGEFORMAT=$IMAGEFORMAT" >> config/common
+			echo "UBUNTU_IMAGE_ARGS=\"$UBUNTU_IMAGE_ARGS\"" >> config/common
+			# Store model assertion in top dir to get it picked up later as a build artifact
+			env SNAPPY_STORE_NO_CDN=1 snap known --remote model series=16 model="$MODEL" brand-id=canonical > "$PREFIX".model-assertion
+			echo "Configured ubuntu-image for the following model assertion:"
+			cat "$PREFIX".model-assertion
+			echo "----------------------------------------------------------"
+		else
+			# classic images
+
+			UBUNTU_IMAGE_ARGS=""
+			if [ "$PROPOSED" ]; then
+				UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS --with-proposed"
+			fi
+			if [ "$EXTRA_PPAS" ]; then
+				UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS --extra-ppas \"$EXTRA_PPAS\""
+			fi
+
+			git clone lp:~canonical-foundations/snap-$MODEL/+git/github-mirror -b classic config/$PREFIX-gadget
+
+			echo "IMAGEFORMAT=$IMAGEFORMAT" >> config/common
+			echo "UBUNTU_IMAGE_ARGS=\"$UBUNTU_IMAGE_ARGS\"" >> config/common
+
+			echo "Configured ubuntu-image for the following gadget model: $MODEL"
+		fi
 		# Fake finished configuration for lb build
 		mkdir -p .build
 		touch .build/config