consumer.cpp

#ifdef MY_PRIVATE_DEFINE
#  error Unexpected MY_PRIVATE_DEFINE
#endif

#ifndef MY_PUBLIC_DEFINE
#  error Expected MY_PUBLIC_DEFINE
#endif

#ifndef MY_INTERFACE_DEFINE
#  error Expected MY_INTERFACE_DEFINE
#endif

#ifndef DASH_D_DEFINE
#  error Expected DASH_D_DEFINE
#endif

#ifndef CONSUMER_LANG_CXX
#  error Expected CONSUMER_LANG_CXX
#endif

#ifdef CONSUMER_LANG_C
#  error Unexpected CONSUMER_LANG_C
#endif

#if !LANG_IS_CXX
#  error Expected LANG_IS_CXX
#endif

#if LANG_IS_C
#  error Unexpected LANG_IS_C
#endif

int main()
{
  return 0;
}