Temporary header file '/tmp/0uNpNAoNfg/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
#ifdef __cplusplus
// C17 compat layer
#define _Alignof(type) alignof(type)
#endif
#define getaddrinfo_a(a,b,c,d)

  // add includes
  #include "/usr/include/log4cpp/threading/PThreads.hh"
  #include "/usr/include/log4cpp/AbortAppender.hh"
  #include "/usr/include/log4cpp/Appender.hh"
  #include "/usr/include/log4cpp/AppenderSkeleton.hh"
  #include "/usr/include/log4cpp/AppendersFactory.hh"
  #include "/usr/include/log4cpp/BasicConfigurator.hh"
  #include "/usr/include/log4cpp/BasicLayout.hh"
  #include "/usr/include/log4cpp/BufferingAppender.hh"
  #include "/usr/include/log4cpp/Category.hh"
  #include "/usr/include/log4cpp/CategoryStream.hh"
  #include "/usr/include/log4cpp/Configurator.hh"
  #include "/usr/include/log4cpp/DailyRollingFileAppender.hh"
  #include "/usr/include/log4cpp/Export.hh"
  #include "/usr/include/log4cpp/FactoryParams.hh"
  #include "/usr/include/log4cpp/FileAppender.hh"
  #include "/usr/include/log4cpp/Filter.hh"
  #include "/usr/include/log4cpp/FixedContextCategory.hh"
  #include "/usr/include/log4cpp/HierarchyMaintainer.hh"
  #include "/usr/include/log4cpp/Layout.hh"
  #include "/usr/include/log4cpp/LayoutAppender.hh"
  #include "/usr/include/log4cpp/LayoutsFactory.hh"
  #include "/usr/include/log4cpp/LevelEvaluator.hh"
  #include "/usr/include/log4cpp/LoggingEvent.hh"
  #include "/usr/include/log4cpp/Manipulator.hh"
  #include "/usr/include/log4cpp/NDC.hh"
  #include "/usr/include/log4cpp/OstreamAppender.hh"
  #include "/usr/include/log4cpp/PassThroughLayout.hh"
  #include "/usr/include/log4cpp/PatternLayout.hh"
  #include "/usr/include/log4cpp/Portability.hh"
  #include "/usr/include/log4cpp/Priority.hh"
  #include "/usr/include/log4cpp/PropertyConfigurator.hh"
  #include "/usr/include/log4cpp/RemoteSyslogAppender.hh"
  #include "/usr/include/log4cpp/RollingFileAppender.hh"
  #include "/usr/include/log4cpp/SimpleConfigurator.hh"
  #include "/usr/include/log4cpp/SimpleLayout.hh"
  #include "/usr/include/log4cpp/StringQueueAppender.hh"
  #include "/usr/include/log4cpp/SyslogAppender.hh"
  #include "/usr/include/log4cpp/TimeStamp.hh"
  #include "/usr/include/log4cpp/TriggeringEventEvaluator.hh"
  #include "/usr/include/log4cpp/TriggeringEventEvaluatorFactory.hh"
  #include "/usr/include/log4cpp/config-MinGW32.h"
  #include "/usr/include/log4cpp/config-openvms.h"
  #include "/usr/include/log4cpp/config.h"
  #include "/usr/include/log4cpp/convenience.h"

  // add namespaces
  namespace log4cpp{typedef int tmp_add_type_1;}
  log4cpp::tmp_add_type_1 tmp_add_func_1(){return 0;};
  namespace log4cpp{namespace details{typedef int tmp_add_type_2;}}
  log4cpp::details::tmp_add_type_2 tmp_add_func_2(){return 0;};
  namespace log4cpp{namespace threading{typedef int tmp_add_type_3;}}
  log4cpp::threading::tmp_add_type_3 tmp_add_func_3(){return 0;};

  // add classes
  _G_fpos64_t* tmp_add_class_0;
  _G_fpos_t* tmp_add_class_1;
  _IO_cookie_io_functions_t* tmp_add_class_2;
  cmsghdr* tmp_add_class_3;
  f_owner_ex* tmp_add_class_4;
  file_handle* tmp_add_class_5;
  flock64* tmp_add_class_6;
  group_filter* tmp_add_class_7;
  group_req* tmp_add_class_8;
  group_source_req* tmp_add_class_9;
  in6_addr* tmp_add_class_10;
  in6_pktinfo* tmp_add_class_11;
  in_addr* tmp_add_class_12;
  in_pktinfo* tmp_add_class_13;
  iovec* tmp_add_class_14;
  ip6_mtuinfo* tmp_add_class_15;
  ip_mreq* tmp_add_class_16;
  ip_mreq_source* tmp_add_class_17;
  ip_mreqn* tmp_add_class_18;
  ip_msfilter* tmp_add_class_19;
  ip_opts* tmp_add_class_20;
  ipv6_mreq* tmp_add_class_21;
  linger* tmp_add_class_22;
  mmsghdr* tmp_add_class_23;
  msghdr* tmp_add_class_24;
  osockaddr* tmp_add_class_25;
  sockaddr* tmp_add_class_26;
  sockaddr_in* tmp_add_class_27;
  sockaddr_in6* tmp_add_class_28;
  sockaddr_storage* tmp_add_class_29;
  statx_timestamp* tmp_add_class_30;
  ucred* tmp_add_class_31;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/0uNpNAoNfg/dump1.h"