OpenJDK9 build error

When building OpenJDK-9 on a CentOS-7 machine, build fails with

[...]/jdk/make/src/classes/build/tools/taglet/ExtLink.java:37: error: cannot find symbol
import jdk.javadoc.doclet.Taglet;
                         ^
  symbol:   class Taglet
  location: package jdk.javadoc.doclet

      

        
        
        
      

    

and many similar errors after that. It seems to be jdk-9 + 168 from 2017-05-04. The error appears after checking with hg, running configure with no arguments and starting make. Nothing unusual.

What am I doing wrong here?