make/CompileJavaModules.gmk

@@ -459,10 +459,17 @@
 # Exclude BreakIterator classes that are just used in compile process to generate
 # data files and shouldn't go in the product
 jdk.localedata_EXCLUDE_FILES += sun/text/resources/ext/BreakIteratorRules_th.java
 
 ################################################################################
+# If this is an imported module that has prebuilt classes, only compile
+# module-info.java.
+ifneq ($(wildcard $(IMPORT_MODULES_CLASSES)/$(MODULE)), )
+  $(MODULE)_INCLUDE_FILES := module-info.java
+endif
+
+################################################################################
 # Setup the compilation for the module
 #
 MODULE_SRC_DIRS := $(call FindModuleSrcDirs, $(MODULE))
 
 # The JDK_USER_DEFINED_FILTER is a poor man's incremental build: by specifying