diff --git a/conf/ros-distro/include/melodic/ros-distro-preferred-versions.inc b/conf/ros-distro/include/melodic/ros-distro-preferred-versions.inc
new file mode 100644
index 0000000..d984f70
--- /dev/null
+++ b/conf/ros-distro/include/melodic/ros-distro-preferred-versions.inc
@@ -0,0 +1,6 @@
+# melodic/ros-distro-preferred-versions.inc
+#
+# Copyright (c) 2019 LG Electronics, Inc.
+
+# Set PREFERRED_VERSION_<PN> here for non-platform packages for which the layers provide multiple versions and to override those
+# set in ros-distro-platform-preferred-versions.inc .
diff --git a/conf/ros-distro/include/melodic/ros-distro-recipe-blacklist.inc b/conf/ros-distro/include/melodic/ros-distro-recipe-blacklist.inc
new file mode 100644
index 0000000..7f98dc2
--- /dev/null
+++ b/conf/ros-distro/include/melodic/ros-distro-recipe-blacklist.inc
@@ -0,0 +1,15 @@
+# medlodic/ros-distro-recipe-blacklist.inc
+#
+# Copyright (c) 2019 LG Electronics, Inc.
+
+# This is a ROS 1 distro, so blacklist ROS 2 packages that will never be ROS 1.
+PNBLACKLIST[packagegroup-ros2-demos] ?= "Not a ROS 1 package"
+PNBLACKLIST[packagegroup-ros2-world] ?= "Not a ROS 1 package"
+
+# Initially, blacklist any non-platform duplicates found by "bitbake-layers show-overlayed". Remove from the blacklist once a
+# PREFERRED_VERSION_<PN> setting is made in ros-distro-preferred-versions.inc .
+PNBLACKLIST[libmodbus] ?= "Must specify PREFERRED_VERSION"
+
+# Initially, blacklist any non-platform recipes with multiple versions found by "bitbake-layers show-recipes --multiple". Remove
+# from the blacklist once a PREFERRED_VERSION_<PN> setting is made in ros-distro-preferred-versions.inc .
+# (none)