doxygen 1.6.1 cygwin build failure

_From [bruen...@google.com](https://code.google.com/u/109494838902877177630/) on June 28, 2012 20:11:23_

10:33 PM ~/dr/git/build_x64_dbg
% cmake --build .

Microsoft (R) Visual Studio Version 9.0.30729.1.
Copyright (C) Microsoft Corp. All rights reserved.
1>------ Build started: Project: htmldocs, Configuration: Debug x64 ------
1>Generating html/index.html
1>CMake Error at C:/src/dr/git/src/api/docs/CMake_rundoxygen.cmake:111 (message):
1> **\* C:/cygwin/bin/doxygen.exe failed: ***
1> Warning: the type 'øy:ÿÿÿÿ8Y:8Y:è9l9¤9øÀ(' is not supported for
1> the entry tag within a navindex! Check your layout file!
1> 1 [main] doxygen 8068 exception::handle: Exception: STATUS_ACCESS_VIOLATION
1> 493 [main] doxygen 8068 open_stackdumpfile: Dumping stack trace to doxygen.exe.stackdump
1>Project : error PRJ0019: A tool returned an error code from "Generating html/index.html"
1>Build log was saved at "file://c:\src\dr\git\build_x64_dbg\api\docs\htmldocs.dir\Debug\BuildLog.htm"
1>htmldocs - 1 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 54 up-to-date, 0 skipped ==========

% doxygen --version
1.6.1

_Original issue: http://code.google.com/p/dynamorio/issues/detail?id=832_