#ifdef HAVE_CONFIG_H
  #include "config.h"
  #endif
  #ifdef HAVE_LIBFLTK
  #include "hist.cxx"
  #else
  #include <iostream>
  using namespace std;
  int main(){
    cerr << "No GUI support, try cas instead or recompile Giac with" << endl;
    cerr << "./configure --enable-fltk-support" << endl;
    cerr << "make clean ; make" << endl;
  }
  #endif