Temporary header file '/tmp/1cfnplGI1b/dump1.h' with the following content will be compiled to create GCC translation unit dump:

  // add defines
  #define __STDC_VERSION__ 201710L
#define _TIME_BITS 64
#define _FILE_OFFSET_BITS 64
#define _GXX_NULLPTR_T
#define CLUTTER_ENABLE_COMPOSITOR_API 1
#define _REGEX_NELTS(n)
#define _Atomic
#define PACKED

  // add includes
  #include "/usr/include/avahi-core/core.h"
  #include "/usr/include/avahi-core/log.h"
  #include "/usr/include/avahi-core/lookup.h"
  #include "/usr/include/avahi-core/publish.h"
  #include "/usr/include/avahi-core/rr.h"

  // add classes
  AvahiAddress* tmp_add_class_0;
  AvahiIPv4Address* tmp_add_class_1;
  AvahiIPv6Address* tmp_add_class_2;
  AvahiKey* tmp_add_class_3;
  AvahiPoll* tmp_add_class_4;
  AvahiRecord* tmp_add_class_5;
  AvahiServerConfig* tmp_add_class_6;
  AvahiStringList* tmp_add_class_7;
  itimerval* tmp_add_class_8;
  pollfd* tmp_add_class_9;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/1cfnplGI1b/dump1.h"