diff -dur boost_1_44_0.unpatched/boost/config/compiler/gcc.hpp boost_1_44_0/boost/config/compiler/gcc.hpp
--- boost_1_44_0.unpatched/boost/config/compiler/gcc.hpp	2010-07-01 04:59:21.000000000 -0700
+++ boost_1_44_0/boost/config/compiler/gcc.hpp	2010-09-21 14:57:34.481869800 -0700
@@ -113,7 +113,7 @@
 // Dynamic shared object (DSO) and dynamic-link library (DLL) support
 //
 #if __GNUC__ >= 4
-#  if defined(_WIN32) || defined(__WIN32__) || defined(WIN32)
+#  if (defined(_WIN32) || defined(__WIN32__) || defined(WIN32)) && !defined(__CYGWIN__) // temp
      // All Win32 development environments, including 64-bit Windows and MinGW, define 
      // _WIN32 or one of its variant spellings. Note that Cygwin is a POSIX environment,
      // so does not define _WIN32 or its variants.