[Flex-help] YY_DECL prototype not in flex header file

[Christian E. <eh...@zb...>]

Hi everybody,

when declaring YY_DECL in the flex file (lexer.l), the macro is only
defined in the source file (lexer.c) and not in the header file
(lexer.h), resulting in a incorrect prototype of yylex in the header
file. 

Could not find a way to modify the lexer.h so the YY_DECL is included. 
By intuition, I would expect a definition of YY_DECL in lexer.h, since
it is defined in lexer.l. bug?


lexer.l:
--------
%{
  #include <math.h> 
  #include <stdio.h>
  #include <string.h>
  #include "smarts_grammar.h"

  #define YY_DECL int smartslex( YYSTYPE* yylval_param, YYLTYPE*
yylloc_param, char* smarts_read )
%}
...


grep YY_DECL lexer.h
#ifndef YY_DECL
#define YY_DECL_IS_OURS 1
#define YY_DECL int smartslex \
#endif /* !YY_DECL */
#ifdef YY_DECL_IS_OURS
#undef YY_DECL_IS_OURS
#undef YY_DECL


grep YY_DECL lexer.c
  #define YY_DECL int smartslex( YYSTYPE* yylval_param, YYLTYPE*
yylloc_param, char* smarts_read )
#ifndef YY_DECL
#define YY_DECL_IS_OURS 1
#define YY_DECL int smartslex \
#endif /* !YY_DECL */
YY_DECL