YY_CURRENT_BUFFER undeclared

[Buday Gergely]

Hi, 

I'm using flex 2.5.4.

I got

$ gcc cs.c lex.yy.c -lfl
cs.c: In function `main':
cs.c:26: `YY_CURRENT_BUFFER' undeclared (first use in this function)
cs.c:26: (Each undeclared identifier is reported only once
cs.c:26: for each function it appears in.)

What is the problem? Is it a bug? Should I use a newer version?

See my files below.

- Gergely

==cs.c=================================================================
#include <stdio.h>
#include "phonemes.h"

int main(int argc, char *argv[])
{
 int token;

 if (argc==1) {printf("Missing parameter - please give a string to
parse\n");
                 exit(1);}
 else yy_scan_string(argv[1]);

 while ((token=yylex()) != EOF)
 {
        switch (token) {
        case CS :
                printf("rovid cse.");
                break;
        case CCS :
                printf("hosszu cse.");
                break;
        case SILENCE :
                printf("szunet.");
                break;
        };
 };
 yy_delete_buffer( YY_CURRENT_BUFFER );
}
======phonemes.h======================================
enum keyword
{ SILENCE = 32, /* this ensures that this enum is directly printable */
  A, AA, B, BB, C, CC, CS, CCS, D, DD, DZ, DDZ, DZS, DDZS, E, EE, F, FF,
  G, GG, GY, GGY, H,
  DOH,  /* x in the usual notation         */
  I, II, J, JJ,
  KAPJ, /* C with a tail in usual notation */
  DOBJ, /* capital J in usual notation     */
  K, KK, L, LL, M, MM, N, NN, NY, NNY, O, OO, OE, OEOE, P, PP, R, RR,
  S, SS, SZ, SSZ, T, TT, TY, TTY, U, UU, UE, UEUE, V, VV,
  W,    /* v at the beginning of a word    */
  Z, ZZ, ZS, ZZS
};
=====graph2phon.yy=====================================
%{
#include "phonemes.h"
%}

%%
ccs             return CCS;
cs              return CS;
<<EOF>>         return EOF;
.               return SILENCE;