Work around compiler warning when using flex 2.5.35.

git-svn-id: file://localhost/svn/Verilog-Perl/trunk/Verilog-Perl@77578 c99bdd1b-02e9-0310-b855-c9df8d5cb90a

Changes

@@ -7,6 +7,8 @@ indicates the contributor was also the author of the fix; Thanks!
 
 ****	Fix compile error under GCC 3.3.5.
 
+****	Work around compiler warning when using flex 2.5.35. [Jonathan Kimmitt]
+
 * Verilog::Language 3.210 2009/05/19
 
 ***	`__FILE__ now expands to a string, per draft SystemVerilog 2010(ish).

Parser/VParseLex.l

@@ -40,6 +40,9 @@
 
 #define YY_SKIP_YYWRAP
 
+// Flex 2.5.35 has compile warning in ECHO, so we'll default our own rule
+#define ECHO yyerrorf("Missing VParseLex.l rule: ECHO rule invoked in state %d: %s", YY_START, yytext);
+
 VParseLex* VParseLex::s_currentLexp = NULL;	// Current lexing point
 VParseBisonYYSType* VParseLex::s_yylvalp = NULL;		// LValue for current bison object
 

Preproc/VPreprocLex.l

@@ -34,6 +34,9 @@
 #include <cstring>
 #include <iostream>
 
+// Flex 2.5.35 has compile warning in ECHO, so we'll default our own rule
+#define ECHO yyerrorf("Missing VPreprocLex.l rule: ECHO rule invoked in state %d: %s", YY_START, yytext);
+
 VPreprocLex* VPreprocLex::s_currentLexp = NULL;	// Current lexing point
 
 #define linenoInc()  { VPreprocLex::s_currentLexp->linenoInc(); }