Index: libs/filesystem/v3/src/operations.cpp
===================================================================
--- libs/filesystem/v3/src/operations.cpp	(revision 72238)
+++ libs/filesystem/v3/src/operations.cpp	(working copy)
@@ -10,6 +10,26 @@
 
 //--------------------------------------------------------------------------------------// 
 
+// This must be first
+#if !(defined(__HP_aCC) && defined(_ILP32) && \
+      !defined(_STATVFS_ACPP_PROBLEMS_FIXED))
+#define _FILE_OFFSET_BITS 64 // at worst, these defines may have no effect,
+#endif
+#if !defined(__PGI)
+#define __USE_FILE_OFFSET64 // but that is harmless on Windows and on POSIX
+      // 64-bit systems or on 32-bit systems which don't have files larger 
+      // than can be represented by a traditional POSIX/UNIX off_t type. 
+      // OTOH, defining them should kick in 64-bit off_t's (and thus 
+      // st_size)on 32-bit systems that provide the Large File
+      // Support (LFS)interface, such as Linux, Solaris, and IRIX.
+      // The defines are given before any headers are included to
+      // ensure that they are available to all included headers.
+      // That is required at least on Solaris, and possibly on other
+      // systems as well.
+#else
+#define _FILE_OFFSET_BITS 64
+#endif
+
 #include <boost/config.hpp>
 #if !defined( BOOST_NO_STD_WSTRING )
 // Boost.Filesystem V3 and later requires std::wstring support.
@@ -30,25 +50,6 @@
 # define _POSIX_PTHREAD_SEMANTICS  // Sun readdir_r()needs this
 #endif
 
-#if !defined(__QNXNTO__) && !(defined(__HP_aCC) && defined(_ILP32) && \
-      !defined(_STATVFS_ACPP_PROBLEMS_FIXED))
-#define _FILE_OFFSET_BITS 64 // at worst, these defines may have no effect,
-#endif
-#if !defined(__PGI)
-#define __USE_FILE_OFFSET64 // but that is harmless on Windows and on POSIX
-      // 64-bit systems or on 32-bit systems which don't have files larger 
-      // than can be represented by a traditional POSIX/UNIX off_t type. 
-      // OTOH, defining them should kick in 64-bit off_t's (and thus 
-      // st_size)on 32-bit systems that provide the Large File
-      // Support (LFS)interface, such as Linux, Solaris, and IRIX.
-      // The defines are given before any headers are included to
-      // ensure that they are available to all included headers.
-      // That is required at least on Solaris, and possibly on other
-      // systems as well.
-#else
-#define _FILE_OFFSET_BITS 64
-#endif
-
 #include <boost/filesystem/v3/operations.hpp>
 #include <boost/scoped_array.hpp>
 #include <boost/detail/workaround.hpp>