o3de-extras/Gems/ROS2/Code/FindROS2.cmake

# Copyright (c) Contributors to the Open 3D Engine Project.
# For complete copyright and license terms please see the LICENSE at the root of this distribution.
#
# SPDX-License-Identifier: Apache-2.0 OR MIT

# Note that this does not find any ros2 package in particular, but determines whether a distro is sourced properly
# Can be extended to handle supported / unsupported distros
if (NOT DEFINED ENV{ROS_DISTRO} OR NOT DEFINED ENV{AMENT_PREFIX_PATH})
    message(WARNING, "To build ROS2 Gem a ROS distribution needs to be sourced, but none detected")
    set(ROS2_FOUND FALSE)
    return()
endif()
message(STATUS "Ros Distro is \"$ENV{ROS_DISTRO}\"")
set(ROS2_FOUND TRUE)