Initial contribution

src/examples/helloworld/CMakeLists.export

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+cmake_minimum_required(VERSION 3.5)
+
+if (NOT TARGET CycloneDDS::ddsc)
+    # Find the CycloneDDS package. If it is not in a default location, try
+    # finding it relative to the example where it most likely resides.
+    find_package(CycloneDDS REQUIRED PATHS "${CMAKE_SOURCE_DIR}/../../")
+endif()
+
+# This is a convenience function, provided by the CycloneDDS package,
+# that will supply a library target related the the given idl file.
+# In short, it takes the idl file, generates the source files with
+# the proper data types and compiles them into a library.
+idlc_generate(HelloWorldData_lib "HelloWorldData.idl")
+
+# Both executables have only one related source file.
+add_executable(HelloworldPublisher publisher.c)
+add_executable(HelloworldSubscriber subscriber.c)
+
+# Both executables need to be linked to the idl data type library and
+# the ddsc API library.
+target_link_libraries(HelloworldPublisher HelloWorldData_lib CycloneDDS::ddsc)
+target_link_libraries(HelloworldSubscriber HelloWorldData_lib CycloneDDS::ddsc)