--- freerdp-3.22.0/winpr/libwinpr/comm/CMakeLists.txt.old
+++ freerdp-3.22.0/winpr/libwinpr/comm/CMakeLists.txt
@@ -18,7 +18,7 @@
 set(MODULE_NAME "winpr-comm")
 set(MODULE_PREFIX "WINPR_COMM")
 
-if(NOT WIN32)
+if(NOT WIN32 AND NOT ${CMAKE_SYSTEM_NAME} MATCHES "SunOS")
   set(${MODULE_PREFIX}_SRCS comm.c comm.h)
   if(NOT EMSCRIPTEN AND NOT APPLE)
     winpr_definition_add(WINPR_HAVE_SERIAL_SUPPORT)
--- freerdp-3.22.0/winpr/libwinpr/file/generic.c.~1~
+++ freerdp-3.22.0/winpr/libwinpr/file/generic.c
@@ -198,9 +198,6 @@
 	 * Register all file handle creators.
 	 */
 	ArrayList_Append(HandleCreators, GetNamedPipeClientHandleCreator());
-	const HANDLE_CREATOR* serial = GetCommHandleCreator();
-	if (serial)
-		ArrayList_Append(HandleCreators, serial);
 	ArrayList_Append(HandleCreators, GetFileHandleCreator());
 }
 
--- freerdp-3.22.0/channels/serial/ChannelOptions.cmake.old
+++ freerdp-3.22.0/channels/serial/ChannelOptions.cmake	
@@ -20,6 +20,12 @@
   message("Serial redirection not supported on apple")
 endif()
 
+if(${CMAKE_SYSTEM_NAME} MATCHES "SunOS")
+  set(OPTION_CLIENT_DEFAULT OFF)
+  set(OPTION_SERVER_DEFAULT OFF)
+  message("Serial redirection not supported on apple")
+endif()
+
 define_channel_options(
   NAME
   "serial"