sanity check for new options

Author: thinkyhead

Marlin/src/inc/SanityCheck.h

@@ -1549,6 +1549,23 @@ static_assert(Y_MAX_LENGTH >= Y_BED_SIZE, "Movement bounds (Y_MIN_POS, Y_MAX_POS
   #error "To use CHAMBER_LIMIT_SWITCHING you must disable PIDTEMPCHAMBER."
 #endif
 
+/**
+ * AUTOTEMP
+ */
+#if ENABLED(AUTOTEMP)
+  #ifndef AUTOTEMP_MIN
+    #error "AUTOTEMP requires AUTOTEMP_MIN."
+  #elif !defined(AUTOTEMP_MAX)
+    #error "AUTOTEMP requires AUTOTEMP_MAX."
+  #elif !defined(AUTOTEMP_FACTOR)
+    #error "AUTOTEMP requires AUTOTEMP_FACTOR."
+  #elif !defined(AUTOTEMP_ENABLED)
+    #error "AUTOTEMP requires AUTOTEMP_ENABLED."
+  #elif AUTOTEMP_MAX < AUTOTEMP_MIN
+    #error "AUTOTEMP_MAX must be greater than or equal to AUTOTEMP_MIN."
+  #endif
+#endif
+
 /**
  * Features that require a min/max/specific NUM_AXES
  */