Undef unused 2nd serial option(s) (#21331)

Co-authored-by: Scott Lahteine <github@thinkyhead.com>
4 years ago · 59a9be5f5a
1 changed files with 4 additions and 1 deletions
--- a/Marlin/src/inc/Conditionals_post.h
+++ b/Marlin/src/inc/Conditionals_post.h
@ -2913,6 +2913,9 @@
  #define HAS_MULTI_SERIAL 1
 #endif

-#if ENABLED(MEATPACK_ON_SERIAL_PORT_1) || BOTH(HAS_MULTI_SERIAL, MEATPACK_ON_SERIAL_PORT_2)
+#if !HAS_MULTI_SERIAL
+  #undef MEATPACK_ON_SERIAL_PORT_2
+#endif
+#if EITHER(MEATPACK_ON_SERIAL_PORT_1, MEATPACK_ON_SERIAL_PORT_2)
  #define HAS_MEATPACK 1
 #endif