char help_main[] =
"RRDtool 1.2.6 Copyright 1997-2005 by Tobias Oetiker <tobi@oetiker.ch>\n"
-#if defined(WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
+#if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
" Compiled " __DATE__ " " __TIME__ "\n\n"
#else
" Compiled " MAKE_TIMESTAMP "\n\n"