diff --git a/boost/config/platform/cygwin.hpp b/boost/config/platform/cygwin.hpp
new file mode 100644
index 0000000..b7ef572
--- /dev/null
+++ b/boost/config/platform/cygwin.hpp
@@ -0,0 +1,58 @@
+//  (C) Copyright John Maddock 2001 - 2003. 
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  cygwin specific config options:
+
+#define BOOST_PLATFORM "Cygwin"
+#define BOOST_HAS_DIRENT_H
+#define BOOST_HAS_LOG1P
+#define BOOST_HAS_EXPM1
+
+//
+// Threading API:
+// See if we have POSIX threads, if we do use them, otherwise
+// revert to native Win threads.
+#define BOOST_HAS_UNISTD_H
+#include <unistd.h>
+#if defined(_POSIX_THREADS) && (_POSIX_THREADS+0 >= 0) && !defined(BOOST_HAS_WINTHREADS)
+#  define BOOST_HAS_PTHREADS
+#  define BOOST_HAS_SCHED_YIELD
+#  define BOOST_HAS_GETTIMEOFDAY
+#  define BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE
+#  define BOOST_HAS_SIGACTION
+#else
+#  if !defined(BOOST_HAS_WINTHREADS)
+#     define BOOST_HAS_WINTHREADS
+#  endif
+#  define BOOST_HAS_FTIME
+#endif
+
+//
+// find out if we have a stdint.h, there should be a better way to do this:
+//
+#include <sys/types.h>
+#ifdef _STDINT_H
+#define BOOST_HAS_STDINT_H
+#endif
+
+/// Cygwin has no fenv.h
+#define BOOST_NO_FENV_H
+
+// boilerplate code:
+#include <boost/config/posix_features.hpp>
+
+//
+// Cygwin lies about XSI conformance, there is no nl_types.h:
+//
+#ifdef BOOST_HAS_NL_TYPES_H
+#  undef BOOST_HAS_NL_TYPES_H
+#endif
+ 
+
+
+
+