CODEWITHSUNDEEP
bison
karafar
karafar

Reputation: 516

Bison -d does not create tab.h

I have a .y file that I trying to use with bison -d, but for some reason the .tab.h file is not being generated. Any suggestions?

My bison file in PasteBin:

%{
    #include <stdio.h>
    int yyerror(const char* err);
%}

%token G
%token INT
%token X
%token Y
%token Z
%token END
%token ZERO
%token EOL

%%

program:    list_of_expr
    ;

list_of_expr:   expr
    |   list_of_expr expr
    ;

expr:       G INT X INT Y INT Z INT EOL
    |   ZERO EOL
    |   END
    ;

%%

int main(int argc, char** argv){
    yyparse();
}
int yyerror(const char* err){
    printf("%s\n", err);
}

Upvotes: 0

Views: 324

Answers (1)

Kingsley
Kingsley

Reputation: 14906

With GNU Bison 3.0.4 (default Ubuntu 18 bison) ~

The -d option will only work if your bison grammar file has the .y extension, e.g: my_grammar.y.

But you can work around it by using bison --defines=my_tab.h my_grammar.whatever instead.

EDIT: Your bison grammar file must have the .y extension.

Upvotes: 0

Related Questions