Improve fallbacks if no disks or no adapters

Evan Monroig

2019-07-23 fe8535aed4ddf235e52ae63d0cc6a484f09ec43f

 CMakeLists.txt

@@ -98,6 +98,7 @@
       list(APPEND EXTERNAL_LIBS ${DBUS_LIBRARIES})
   endif(USE_DBUS_IDENTIFIER)    
   list(APPEND EXTERNAL_LIBS dl)
   list(APPEND EXTERNAL_LIBS "-Wl,-Bdynamic")
endif(NOT MSVC)

configure_file (