Disable QWebEngine use for NO_GUI use

Author: gzotti

plugins/OnlineQueries/src/CMakeLists.txt

@@ -49,15 +49,15 @@ IF((STELLARIUM_GUI_MODE STREQUAL "Standard") AND ENABLE_QTWEBENGINE)
     #FIND_PACKAGE(Qt${QT_VERSION_MAJOR} COMPONENTS WebChannel REQUIRED)
     #FIND_PACKAGE(Qt${QT_VERSION_MAJOR} COMPONENTS WebEngineCore REQUIRED)
     FIND_PACKAGE(Qt${QT_VERSION_MAJOR} COMPONENTS WebEngineWidgets QUIET)
-    IF(Qt${QT_VERSION_MAJOR}WebEngineWidgets_FOUND)
+    IF(Qt${QT_VERSION_MAJOR}WebEngineWidgets_FOUND AND (STELLARIUM_GUI_MODE STREQUAL "Standard"))
         ADD_DEFINITIONS(-DWITH_QTWEBENGINE)
         #SET(QTWEBENGINE_LIBS Qt${QT_VERSION_MAJOR}::WebEngine Qt${QT_VERSION_MAJOR}::WebEngineWidgets)
         SET(QTWEBENGINE_LIBS Qt${QT_VERSION_MAJOR}::WebEngineWidgets)
-    ELSE(Qt${QT_VERSION_MAJOR}WebEngineWidgets_FOUND)
+    ELSE(Qt${QT_VERSION_MAJOR}WebEngineWidgets_FOUND AND (STELLARIUM_GUI_MODE STREQUAL "Standard"))
         MESSAGE(WARNING "Qt${QT_VERSION_MAJOR}::WebEngineWidgets or its dependencies (Positioning, WebChannel, WebEngineCore) not found. \
                          If these packages exist for your platform, install and rerun. \
                          Else the program will call the system web browser where required.")
-    ENDIF(Qt${QT_VERSION_MAJOR}WebEngineWidgets_FOUND)
+    ENDIF(Qt${QT_VERSION_MAJOR}WebEngineWidgets_FOUND AND (STELLARIUM_GUI_MODE STREQUAL "Standard"))
 ENDIF((STELLARIUM_GUI_MODE STREQUAL "Standard") AND ENABLE_QTWEBENGINE)