Index: tool/lempar.c
==================================================================
--- tool/lempar.c
+++ tool/lempar.c
@@ -60,11 +60,15 @@
 #define YY_ACCEPT_ACTION  (YYNSTATE+YYNRULE+1)
 #define YY_ERROR_ACTION   (YYNSTATE+YYNRULE)
 
 /* The yyzerominor constant is used to initialize instances of
 ** YYMINORTYPE objects to zero. */
+#ifdef __cplusplus
+static YYMINORTYPE yyzerominor;
+#else
 static const YYMINORTYPE yyzerominor;
+#endif
 
 /* Next are the tables used to determine what action to take based on the
 ** current state and lookahead token.  These tables are used to implement
 ** functions that take a state number and lookahead value and return an
 ** action integer.