The attached patch fixes what I think is a bug in the win32 platform detection code. Thomas -- Thomas Witt witt@acm.org Index: mutex.hpp =================================================================== RCS file: /cvsroot/boost/boost/boost/pool/detail/mutex.hpp,v retrieving revision 1.4 diff -u -3 -p -u -r1.4 mutex.hpp --- mutex.hpp 14 Sep 2003 00:50:31 -0000 1.4 +++ mutex.hpp 10 Aug 2004 00:15:22 -0000 @@ -22,7 +22,7 @@ // No multithreading -> make locks into no-ops #define BOOST_MUTEX_HELPER BOOST_MUTEX_HELPER_NONE #else - #ifdef __WIN32__ + #if defined(_WIN32) || defined(__WIN32__) || defined(WIN32) #define BOOST_MUTEX_HELPER BOOST_MUTEX_HELPER_WIN32 #else #include <unistd.h> @@ -37,7 +37,7 @@ #endif -#ifdef __WIN32__ +#if defined(_WIN32) || defined(__WIN32__) || defined(WIN32) #include <windows.h> #endif #ifdef _POSIX_THREADS @@ -49,7 +49,7 @@ namespace boost { namespace details { namespace pool { -#ifdef __WIN32__ +#if defined(_WIN32) || defined(__WIN32__) || defined(WIN32) class win32_mutex { @@ -73,7 +73,7 @@ class win32_mutex { LeaveCriticalSection(&mtx); } }; -#endif // defined(__WIN32__) +#endif // defined(_WIN32) || defined(__WIN32__) || defined(WIN32) #ifdef _POSIX_THREADS