update image_tools library so it can be reused outside if desired

Signed-off-by: William Woodall <william@osrfoundation.org>

image_tools/CMakeLists.txt

@@ -20,29 +20,42 @@ find_package(OpenCV REQUIRED)
 
 include_directories(include)
 
-add_library(imagetools SHARED
+add_library(${PROJECT_NAME} SHARED
   src/burger.cpp
   src/cam2image.cpp
   src/cv_mat_sensor_msgs_image_type_adapter.cpp
   src/showimage.cpp
 )
-target_compile_definitions(imagetools
+target_compile_definitions(${PROJECT_NAME}
   PRIVATE "IMAGE_TOOLS_BUILDING_DLL")
-ament_target_dependencies(imagetools
+target_include_directories(${PROJECT_NAME} PUBLIC
+  "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>"
+  "$<INSTALL_INTERFACE:include>")
+ament_target_dependencies(${PROJECT_NAME}
   "rclcpp"
   "sensor_msgs"
   "std_msgs"
   "rclcpp_components"
   "OpenCV")
-rclcpp_components_register_node(imagetools PLUGIN "image_tools::Cam2Image" EXECUTABLE cam2image)
-rclcpp_components_register_node(imagetools PLUGIN "image_tools::ShowImage" EXECUTABLE showimage)
+rclcpp_components_register_node(${PROJECT_NAME} PLUGIN "image_tools::Cam2Image" EXECUTABLE cam2image)
+rclcpp_components_register_node(${PROJECT_NAME} PLUGIN "image_tools::ShowImage" EXECUTABLE showimage)
 
-install(TARGETS
-  imagetools
+install(
+  TARGETS ${PROJECT_NAME} EXPORT ${PROJECT_NAME}
   ARCHIVE DESTINATION lib
   LIBRARY DESTINATION lib
   RUNTIME DESTINATION bin)
 
+install(
+  DIRECTORY include/
+  DESTINATION include
+)
+
+ament_export_libraries(${PROJECT_NAME})
+ament_export_targets(${PROJECT_NAME})
+
+ament_export_dependencies(rclcpp_components)
+
 if(BUILD_TESTING)
   find_package(ament_lint_auto REQUIRED)
   ament_lint_auto_find_test_dependencies()