fix(pubsub): Fix Travis and Appveyor build

CMakeLists.txt

@@ -254,6 +254,10 @@ mark_as_advanced(UA_ENABLE_JSON_ENCODING)
 option(UA_ENABLE_PUBSUB_MQTT "Enable publish/subscribe with mqtt (experimental)" OFF)
 mark_as_advanced(UA_ENABLE_PUBSUB_MQTT)
 if(UA_ENABLE_PUBSUB_MQTT)
+    # Warn if run in Windows
+    if(WIN32)
+        MESSAGE(WARNING "Multithreading is enabled in MQTT plugin. This feature is under development and marked as EXPERIMENTAL")
+    endif()
     if(NOT UA_ENABLE_PUBSUB)
     message(FATAL_ERROR "Mqtt cannot be used with disabled PubSub function.")
     endif()
@@ -732,14 +736,18 @@ if(UA_ENABLE_PUBSUB)
         list(APPEND default_plugin_sources ${PROJECT_SOURCE_DIR}/plugins/ua_pubsub_ethernet.c)
     endif()
     if(UA_ENABLE_PUBSUB_MQTT)
-        list(APPEND default_plugin_headers ${PROJECT_SOURCE_DIR}/deps/mqtt-c/mqtt_pal.h)
-        list(APPEND default_plugin_sources ${PROJECT_SOURCE_DIR}/plugins/mqtt/ua_mqtt_pal.c)
-        list(APPEND default_plugin_headers ${PROJECT_SOURCE_DIR}/deps/mqtt-c/mqtt.h)
-        list(APPEND default_plugin_sources ${PROJECT_SOURCE_DIR}/deps/mqtt-c/mqtt.c)
-        list(APPEND default_plugin_headers ${PROJECT_SOURCE_DIR}/plugins/ua_network_pubsub_mqtt.h)
-        list(APPEND default_plugin_sources ${PROJECT_SOURCE_DIR}/plugins/ua_network_pubsub_mqtt.c)  
-        list(APPEND default_plugin_headers ${PROJECT_SOURCE_DIR}/plugins/mqtt/ua_mqtt_adapter.h)                   
-        list(APPEND default_plugin_sources ${PROJECT_SOURCE_DIR}/plugins/mqtt/ua_mqtt_adapter.c)
+        if(WIN32)
+            MESSAGE(WARNING "Multithreading is enabled in MQTT plugin. This feature is under development and marked as EXPERIMENTAL")
+        else()
+            list(APPEND default_plugin_headers ${PROJECT_SOURCE_DIR}/deps/mqtt-c/mqtt_pal.h)
+            list(APPEND default_plugin_sources ${PROJECT_SOURCE_DIR}/plugins/mqtt/ua_mqtt_pal.c)
+            list(APPEND default_plugin_headers ${PROJECT_SOURCE_DIR}/deps/mqtt-c/mqtt.h)
+            list(APPEND default_plugin_sources ${PROJECT_SOURCE_DIR}/deps/mqtt-c/mqtt.c)
+            list(APPEND default_plugin_headers ${PROJECT_SOURCE_DIR}/plugins/ua_network_pubsub_mqtt.h)
+            list(APPEND default_plugin_sources ${PROJECT_SOURCE_DIR}/plugins/ua_network_pubsub_mqtt.c)
+            list(APPEND default_plugin_headers ${PROJECT_SOURCE_DIR}/plugins/mqtt/ua_mqtt_adapter.h)
+            list(APPEND default_plugin_sources ${PROJECT_SOURCE_DIR}/plugins/mqtt/ua_mqtt_adapter.c)
+        endif()
     endif()
 endif()
 

tests/CMakeLists.txt

@@ -328,9 +328,11 @@ if(UA_ENABLE_PUBSUB)
         endif()
     endif()
     if(UA_ENABLE_PUBSUB_MQTT)
-        add_executable(check_pubsub_connection_mqtt pubsub/check_pubsub_connection_mqtt.c $<TARGET_OBJECTS:open62541-object> $<TARGET_OBJECTS:open62541-plugins>)
-        target_link_libraries(check_pubsub_connection_mqtt ${LIBS})
-        add_test_valgrind(pubsub_connection_mqtt ${TESTS_BINARY_DIR}/check_pubsub_connection_mqtt)
+        if(NOT WIN32)
+            add_executable(check_pubsub_connection_mqtt pubsub/check_pubsub_connection_mqtt.c $<TARGET_OBJECTS:open62541-object> $<TARGET_OBJECTS:open62541-plugins>)
+            target_link_libraries(check_pubsub_connection_mqtt ${LIBS})
+            add_test_valgrind(pubsub_connection_mqtt ${TESTS_BINARY_DIR}/check_pubsub_connection_mqtt)
+        endif()
     endif()
 endif()