Index: wsjtx/CMakeLists.txt
===================================================================
--- wsjtx/CMakeLists.txt	(revision 8382)
+++ wsjtx/CMakeLists.txt	(working copy)
@@ -866,6 +866,7 @@
 find_package (Qt5Widgets 5 REQUIRED)
 find_package (Qt5Multimedia 5 REQUIRED)
 find_package (Qt5PrintSupport 5 REQUIRED)
+find_package (Qt5SerialPort 5 REQUIRED)
 
 if (WIN32)
   add_definitions (-DQT_NEEDS_QTMAIN)