bison help

[Nowland Jeffrey John]

Hello,

I am a student currently trying to devise a way to parse the R programming Language. I can currently use gcc to produce a parser. The problem is that when I use g++ to try and create the parser I get this error:

 

$g++ lex.yy.c output.c++ -ll 

 

/share/bison/share/bison.simple: In function `int yyparse()':
/share/bison/share/bison.simple:327: implicit declaration of function `int yyerror(...)'
/share/bison/share/bison.simple:387: implicit declaration of function `int yylex(...)'

 

Both Flex and Bison wok fine in producing the .c files and ,as mentioned, they compile when using the C compiler. I realise that I have not provided much background on the problem but in any event can you give me some help on how to solve this problem?

 

Thank you for your time.