Support passing IMAGE_FLAVORS in the environment, to limit which images

are output as part of a build; particularly useful for ubuntu-cpc builds
which output multiple image types.

debian/changelog

@@ -1,3 +1,11 @@
+livecd-rootfs (2.440) UNRELEASED; urgency=medium
+
+  * Support passing IMAGE_FLAVORS in the environment, to limit which images
+    are output as part of a build; particularly useful for ubuntu-cpc builds
+    which output multiple image types.
+
+ -- Steve Langasek <steve.langasek@ubuntu.com>  Mon, 06 Feb 2017 22:09:17 -0800
+
 livecd-rootfs (2.439) zesty; urgency=medium
 
   * Fix the manifest generation in OVA files so that ovf files don't have

live-build/auto/config

@@ -618,6 +618,9 @@ lb config noauto \
 echo "LB_CHROOT_HOOKS=\"$CHROOT_HOOKS\"" >> config/chroot
 echo "LB_BINARY_HOOKS=\"$BINARY_HOOKS\"" >> config/binary
 echo "BUILDSTAMP=\"$NOW\"" >> config/binary
+if [ -n "$IMAGE_FLAVORS" ]; then
+	echo "LB_IMAGE_FLAVORS="$IMAGE_FLAVORS" >> config/binary
+fi
 
 case $ARCH+$SUBARCH in
 	armhf+raspi2)

live-build/ubuntu-cpc/hooks/040-qcow2-image.binary

@@ -1,5 +1,14 @@
 #!/bin/bash -ex
 
+case $LB_IMAGE_FLAVORS in
+	""|*qcow2*)
+		;;
+	*)
+		echo "Skipping qcow2 image build"
+		exit 0
+		;;
+esac
+
 case $ARCH:$SUBARCH in
 	# Not sure if any other cloud images use subarch for something that
 	# should take qcow2 format, so only skipping this on raspi2 for now.

live-build/ubuntu-cpc/hooks/040-vmdk-image.binary

@@ -9,6 +9,15 @@ case $ARCH in
                      exit 0;;
 esac
 
+case $LB_IMAGE_FLAVORS in
+	""|*vmdk*)
+		;;
+	*)
+		echo "Skipping VMDK image build"
+		exit 0
+		;;
+esac
+
 . /build/config/functions
 
 if [ -e binary/boot/disk-uefi.ext4 ]; then

live-build/ubuntu-cpc/hooks/041-vmdk-ova-image.binary

@@ -14,6 +14,16 @@ case $ARCH in
                  *) echo "OVA images are not supported for $ARCH yet.";
                      exit 0;;
 esac
+
+case $LB_IMAGE_FLAVORS in
+	""|*ova*)
+		;;
+	*)
+		echo "Skipping OVA image build"
+		exit 0
+		;;
+esac
+
 cur_d=${PWD}
 my_d=$(dirname $(readlink -f ${0}))
 

live-build/ubuntu-cpc/hooks/042-vagrant.binary

@@ -15,6 +15,15 @@
 # some packages in it, convert it to a vmdk, and then assemble the vagrant
 # box.
 
+case $LB_IMAGE_FLAVORS in
+	""|*vagrant*)
+		;;
+	*)
+		echo "Skipping Vagrant image build"
+		exit 0
+		;;
+esac
+
 cur_d=${PWD}
 my_d=$(dirname $(readlink -f ${0}))