Updating Hello World example CMakeLists

Co-authored-by: "Duarte Fonseca" <Duarte.Fonseca@ctw.bmwgroup.com>
Co-authored-by: "Matthew Russell" <matthew.g.russell@gmail.com>

examples/hello_world/CMakeLists.txt

@@ -1,58 +1,51 @@
-# Copyright (C) 2015-2017 Bayerische Motoren Werke Aktiengesellschaft (BMW AG) This Source Code Form is subject to the
-# terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with this file, You can obtain
-# one at http://mozilla.org/MPL/2.0/.
+# Copyright (C) 2015-2017 Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 cmake_minimum_required(VERSION 3.15)
 project(vSomeIPHelloWorld)
 
+include(GNUInstallDirs)
+
 find_package(Threads REQUIRED)
 
-include(GNUInstallDirs)
+# This will get us acces to
+#   VSOMEIP_INCLUDE_DIRS - include directories for vSomeIP
+#   VSOMEIP_LIBRARIES    - libraries to link against
+find_package(vsomeip3 REQUIRED)
 
 set(INSTALL_BIN_DIR
     ${CMAKE_INSTALL_BINDIR}
     CACHE STRING "Installation directory for executables"
 )
 
-add_library(vsomeip_hello_world_example INTERFACE)
-target_compile_features(vsomeip_hello_world_example INTERFACE cxx_std_17)
-if(ENABLE_SIGNAL_HANDLING)
-  target_compile_definitions(vsomeip_hello_world_example INTERFACE VSOMEIP_ENABLE_SIGNAL_HANDLING)
-endif()
-
-add_library(vsomeip_hello_world_service INTERFACE)
-target_sources(vsomeip_hello_world_service INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/hello_world_service.hpp")
-target_link_libraries(vsomeip_hello_world_service INTERFACE vsomeip_hello_world_example)
-
-add_library(vsomeip_hello_world_client INTERFACE)
-target_sources(vsomeip_hello_world_client INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/hello_world_client.hpp")
-target_link_libraries(vsomeip_hello_world_client INTERFACE vsomeip_hello_world_example)
-
-target_include_directories(vsomeip_hello_world_client INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}")
-
-if(NOT
-   ${CMAKE_SYSTEM_NAME}
-   MATCHES
-   "Android"
-)
-  # This will get us acces to the vsomeip target, along with VSOMEIP_INCLUDE_DIRS - include directories for vSomeIP
-  # VSOMEIP_LIBRARIES    - libraries to link against
-  if(NOT TARGET vsomeip3)
-    find_package(vsomeip3)
-    if(NOT vsomeip3_FOUND)
-      message("vsomeip was not found. Please specify vsomeip_DIR")
+# create_target(executable)
+macro(create_target executable)
+    add_library(vsomeip_hello_world_${executable} INTERFACE)
+    target_sources(vsomeip_hello_world_${executable} INTERFACE
+        ${CMAKE_CURRENT_SOURCE_DIR}/hello_world_${executable}.hpp
+    )
+    target_compile_features(vsomeip_hello_world_${executable} INTERFACE cxx_std_17)
+    target_include_directories(vsomeip_hello_world_${executable} INTERFACE
+        ${CMAKE_CURRENT_SOURCE_DIR}
+    )
+endmacro()
+
+# link_target(executable)
+macro(link_target executable)
+    add_executable(hello_world_${executable})
+    target_sources(hello_world_${executable} PRIVATE hello_world_${executable}_main.cpp)
+    target_link_libraries(hello_world_${executable} PRIVATE vsomeip_hello_world_${executable} vsomeip3 Threads::Threads)
+    if(ENABLE_SIGNAL_HANDLING)
+      target_compile_definitions(vsomeip_hello_world_${executable} PRIVATE VSOMEIP_ENABLE_SIGNAL_HANDLING)
     endif()
-  endif()
-
-  add_executable(hello_world_service hello_world_service_main.cpp)
-  target_link_libraries(hello_world_service PUBLIC vsomeip_hello_world_service vsomeip3 Threads::Threads)
+endmacro()
 
-  add_executable(hello_world_client hello_world_client_main.cpp)
-  target_link_libraries(hello_world_client PUBLIC vsomeip_hello_world_client vsomeip3 Threads::Threads)
+create_target(service)
+create_target(client)
 
-  install(
-    TARGETS hello_world_client hello_world_service RUNTIME
-            DESTINATION "${INSTALL_BIN_DIR}"
-            COMPONENT example-hello_world
-  )
+if (NOT ${CMAKE_SYSTEM_NAME} MATCHES "Android")
+    link_target("client")
+    link_target("service")
 endif()