Simple Flex/Bison C++

Question

I already looked for my answer but I didn\'t get any quick response for a simple example.

I want to compile a flex/bison scanner+parser using g++ just because I want

Answer 1

You need the extern "C" {} for yylex to be in shady.l:

%{
    extern "C"
    {
        int yylex(void);
    }

    #include "shady.tab.h"
%}

%%

"MOV"|"mov" { return T_MOV; }
"NOP"|"nop" { return T_NOP; }

...etc...

Also, after adding a dummy grammar rule, I was able to build and run this with just:

  559  flex shady.l
  560  bison -d shady.y
  561  g++ shady.tab.c lex.yy.c