--- boost_1_33_1\tools\build\v1\mingw-tools.jam~	Tue Sep 19 21:03:16 2006
+++ boost_1_33_1\tools\build\v1\mingw-tools.jam	Tue Sep 19 20:59:27 2006
@@ -15,7 +15,10 @@
     extends-toolset gcc ;
 
     # So that RUNPATH, and PATH, is set to include where the mingw DLLs are located.
-    flags mingw STDLIBPATH : $(GCC_BIN_DIRECTORY) ;
+    if $(GCC_BIN_DIRECTORY)
+    {
+        flags mingw STDLIBPATH : $(GCC_BIN_DIRECTORY) ;
+    }
 }
 
 flags mingw LINKFLAGS <user-interface>gui : -Wl,--subsystem,windows ;