Hello,There is a dependency issue in the Javadoc makefile when building custom additions. Since the include of the custom Javadoc.gmk happens before the core api build rule declaration, the targets in the custom file cannot properly depend on the core api. The fix is to move the variable definition of the core api javadoc target to before the include.
Bug: https://bugs.openjdk.java.net/browse/JDK-8149963 Webrev: http://cr.openjdk.java.net/~erikj/8149963/webrev.01/ /Erik
