Index: error_code.cpp
===================================================================
--- error_code.cpp	(revision 42991)
+++ error_code.cpp	(working copy)
@@ -15,8 +15,12 @@
 //  But the wording of the warning is misleading and unsettling, there are no
 //  portable alternative functions, and VC++ 8.0's own libraries use the
 //  functions in question. So turn off the warnings.
+#if !defined(_CRT_SECURE_NO_DEPRECATE)
 #define _CRT_SECURE_NO_DEPRECATE
+#endif
+#if !defined (_SCL_SECURE_NO_DEPRECATE)
 #define _SCL_SECURE_NO_DEPRECATE
+#endif
 
 // define BOOST_SYSTEM_SOURCE so that <boost/system/config.hpp> knows
 // the library is being built (possibly exporting rather than importing code)