Temporary header file '/tmp/iOE6xgCDsW/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
#define getaddrinfo_a(a,b,c,d)

  // add includes
  #include "/usr/include/proton/cid.h"
  #include "/usr/include/proton/codec.h"
  #include "/usr/include/proton/condition.h"
  #include "/usr/include/proton/connection.h"
  #include "/usr/include/proton/connection_driver.h"
  #include "/usr/include/proton/delivery.h"
  #include "/usr/include/proton/disposition.h"
  #include "/usr/include/proton/engine.h"
  #include "/usr/include/proton/error.h"
  #include "/usr/include/proton/event.h"
  #include "/usr/include/proton/handlers.h"
  #include "/usr/include/proton/import_export.h"
  #include "/usr/include/proton/link.h"
  #include "/usr/include/proton/listener.h"
  #include "/usr/include/proton/log.h"
  #include "/usr/include/proton/logger.h"
  #include "/usr/include/proton/message.h"
  #include "/usr/include/proton/messenger.h"
  #include "/usr/include/proton/netaddr.h"
  #include "/usr/include/proton/object.h"
  #include "/usr/include/proton/proactor.h"
  #include "/usr/include/proton/raw_connection.h"
  #include "/usr/include/proton/reactor.h"
  #include "/usr/include/proton/sasl.h"
  #include "/usr/include/proton/sasl_plugin.h"
  #include "/usr/include/proton/selectable.h"
  #include "/usr/include/proton/session.h"
  #include "/usr/include/proton/ssl.h"
  #include "/usr/include/proton/terminus.h"
  #include "/usr/include/proton/tls.h"
  #include "/usr/include/proton/transport.h"
  #include "/usr/include/proton/type_compat.h"
  #include "/usr/include/proton/types.h"
  #include "/usr/include/proton/url.h"
  #include "/usr/include/proton/version.h"

  // add classes
  pn_bytes_t* tmp_add_class_0;
  pn_class_t* tmp_add_class_1;
  pn_connection_driver_t* tmp_add_class_2;
  pn_raw_buffer_t* tmp_add_class_3;
  pn_rwbytes_t* tmp_add_class_4;
  pnx_sasl_implementation* tmp_add_class_5;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/iOE6xgCDsW/dump1.h"