make/Docs.gmk

*** 92,13 ***
  JAVADOC_DISABLED_DOCLINT_WARNINGS := missing
  JAVADOC_DISABLED_DOCLINT_PACKAGES := org.w3c.* javax.smartcardio
  
  # The initial set of options for javadoc
  # -XDaccessInternalAPI is a temporary workaround, see 8373909
! JAVADOC_OPTIONS := -use -keywords -notimestamp \
      -serialwarn -encoding utf-8 -docencoding utf-8 -breakiterator \
      -splitIndex --system none -javafx --expand-requires transitive \
      --override-methods=summary \
      -XDaccessInternalAPI
  
  # The reference options must stay stable to allow for comparisons across the
  # development cycle.
--- 92,14 ---
  JAVADOC_DISABLED_DOCLINT_WARNINGS := missing
  JAVADOC_DISABLED_DOCLINT_PACKAGES := org.w3c.* javax.smartcardio
  
  # The initial set of options for javadoc
  # -XDaccessInternalAPI is a temporary workaround, see 8373909
! JAVADOC_OPTIONS := -XDignore.symbol.file=true -use -keywords -notimestamp \
      -serialwarn -encoding utf-8 -docencoding utf-8 -breakiterator \
      -splitIndex --system none -javafx --expand-requires transitive \
+     --enable-preview -source $(JDK_SOURCE_TARGET_VERSION) \
      --override-methods=summary \
      -XDaccessInternalAPI
  
  # The reference options must stay stable to allow for comparisons across the
  # development cycle.