lex error y.tab.h

Question

I am trying to get this example code working but i keep getting the error: fatal error: 'y.tab.h' file not found #include "y.tab.h" . What can I do about this?

%{
#include <stdlib.h>
void yyerror(char *);
#include "y.tab.h"
%}


%% [0-9]+     {
                 yylval = atoi(yytext);
                 return INTEGER;
               }


[-+\n]         return *yytext;



[ \t]        ; /* skip whitespace */


.            yyerror("invalid character");


%%




int yywrap(void) {
return 1;
}

Err, generate it? You do have a yacc grammar? So run yacc on it before you compile anything. — user207421, Nov 17 '12 at 22:46

score 6 · Answer 1 · answered May 12 '14 at 18:12

6

the "y.tab.h" file included in the flex file is generated when you run bison with -dy. example:

flex mylex.l
bison -dy myparser.y

then you should compile them both together:

gcc lex.yy.c myparser.tab.c -o mycompiler.exe

answered May 12 '14 at 18:12

Andrade

1,179
12
15

score 0 · Answer 2 · answered Apr 15 '13 at 03:25

0

The yacc file that you're using is probably creating an output file called "y.tab.c" instead of the "y.tab.h" that you are trying to include here. You should probably try changing that.

answered Apr 15 '13 at 03:25

arkarc

21
1

lex error y.tab.h

2 Answers2