+#ifdef __MWERKS__
+/* No good way of using the CodeWarrior #pragma unused(varname) with Perl
+ * source code (e.g. PERL_UNUSED_DECL doesn't work with the pragma syntax).
+ * Therefore we brutally turn off these particular warnings since there
+ * is a lot of this in Perl code (pTHX, for example). TOther compilers
+ * will have to detect these naughty bits. */
+#pragma warn_unusedarg off
+#pragma warn_unusedvar off
+#pragma warn_emptydecl off
+#endif