--- boost/numeric/bindings/traits/fortran.h	2003-09-13 12:50:19.000000000 +0200
+++ boost/numeric/bindings/traits/fortran.h	2007-04-13 10:51:05.000000000 +0200
@@ -7,6 +7,10 @@
 #ifndef BOOST_NUMERIC_BINDINGS_TRAITS_FORTRAN_H
 #define BOOST_NUMERIC_BINDINGS_TRAITS_FORTRAN_H
 
+#if defined(BIND_FORTRAN_LOWERCASE_UNDERSCORE) || defined(BIND_FORTRAN_LOWERCASE)
+// Allow manual override of the defaults, e.g. if you want to use a fortran
+// lib compiled with gcc from MSVC
+#else
 // First we need to know what the conventions for linking
 // C with Fortran is on this platform/toolset
 #if defined(__GNUC__) || defined(__ICC) || defined(__sgi) || defined(__COMO__) || defined(__KCC)
@@ -16,6 +20,7 @@
 #else
 #error do not know how to link with fortran for the given platform
 #endif
+#endif
 
 // Next we define macro's to convert our symbols to 
 // the current convention