The same error was reported by a user building Subversion using the amalgamation ZIP file. http://mail-archives.apache.org/mod_mbox/subversion-users/202111.mbox/%3CAM9PR06MB8033D1FEF3A8CAB8B92B1CBFC68A9%40AM9PR06MB8033.eurprd06.prod.outlook.com%3E Is there an issue tracker or is it enough to bring it up on the forum?