Modules/CheckFunctionExists.c

   1 #ifdef CHECK_FUNCTION_EXISTS
   2
   3 #  ifdef __cplusplus
   4 extern "C"
   5 #  endif
   6   char
   7   CHECK_FUNCTION_EXISTS(void);
   8 #  ifdef __CLASSIC_C__
   9 int main()
  10 {
  11   int ac;
  12   char* av[];
  13 #  else
  14 int main(int ac, char* av[])
  15 {
  16 #  endif
  17   CHECK_FUNCTION_EXISTS();
  18   if (ac > 1000) {
  19     return *av[0];
  20   }
  21   return 0;
  22 }
  23
  24 #else /* CHECK_FUNCTION_EXISTS */
  25
  26 #  error "CHECK_FUNCTION_EXISTS has to specify the function"
  27
  28 #endif /* CHECK_FUNCTION_EXISTS */