Create distro.hpp config header for distro #defines

Signed-off-by: Christophe Bedard <[email protected]>

rmw_zenoh_cpp/CMakeLists.txt

@@ -72,6 +72,22 @@ target_link_libraries(rmw_zenoh_cpp
     zenohcxx::zenohc
 )
 
+# Get distro from ros_environment and create config header
+set(ROS_DISTRO "$ENV{ROS_DISTRO}")
+set(ROS_DISTRO_JAZZY OFF)
+set(ROS_DISTRO_ROLLING OFF)
+if(ROS_DISTRO STREQUAL "jazzy")
+  set(ROS_DISTRO_JAZZY ON)
+elseif(ROS_DISTRO STREQUAL "rolling")
+  set(ROS_DISTRO_ROLLING ON)
+else()
+  message(WARNING "Unexpected ROS_DISTRO: ${ROS_DISTRO}")
+endif()
+configure_file(include/${PROJECT_NAME}/distro.hpp.in include/${PROJECT_NAME}/distro.hpp)
+target_include_directories(rmw_zenoh_cpp PRIVATE
+  "$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include>"
+)
+
 configure_rmw_library(rmw_zenoh_cpp)
 
 target_compile_definitions(rmw_zenoh_cpp

rmw_zenoh_cpp/include/rmw_zenoh_cpp/distro.hpp.in

@@ -0,0 +1,21 @@
+// Copyright 2024 Open Source Robotics Foundation, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef RMW_ZENOH_CPP_DISTRO_HPP_
+#define RMW_ZENOH_CPP_DISTRO_HPP_
+
+#cmakedefine ROS_DISTRO_JAZZY
+#cmakedefine ROS_DISTRO_ROLLING
+
+#endif  // RMW_ZENOH_CPP_DISTRO_HPP_

rmw_zenoh_cpp/package.xml

@@ -15,6 +15,7 @@
 
   <buildtool_depend>ament_cmake</buildtool_depend>
 
+  <build_depend>ros_environment</build_depend>
   <build_depend>zenoh_cpp_vendor</build_depend>
   <build_export_depend>zenoh_cpp_vendor</build_export_depend>