Temporary header file '/tmp/Fbe0OKomRY/dump1.h' with the following content will be compiled to create GCC translation unit dump:

  // add defines
  #define __STDC_VERSION__ 201710L
#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/apr-1.0/apr.h"
  #include "/usr/include/apr-1.0/apr_allocator.h"
  #include "/usr/include/apr-1.0/apr_atomic.h"
  #include "/usr/include/apr-1.0/apr_cstr.h"
  #include "/usr/include/apr-1.0/apr_dso.h"
  #include "/usr/include/apr-1.0/apr_encode.h"
  #include "/usr/include/apr-1.0/apr_env.h"
  #include "/usr/include/apr-1.0/apr_errno.h"
  #include "/usr/include/apr-1.0/apr_escape.h"
  #include "/usr/include/apr-1.0/apr_file_info.h"
  #include "/usr/include/apr-1.0/apr_file_io.h"
  #include "/usr/include/apr-1.0/apr_fnmatch.h"
  #include "/usr/include/apr-1.0/apr_general.h"
  #include "/usr/include/apr-1.0/apr_getopt.h"
  #include "/usr/include/apr-1.0/apr_global_mutex.h"
  #include "/usr/include/apr-1.0/apr_hash.h"
  #include "/usr/include/apr-1.0/apr_inherit.h"
  #include "/usr/include/apr-1.0/apr_lib.h"
  #include "/usr/include/apr-1.0/apr_mmap.h"
  #include "/usr/include/apr-1.0/apr_network_io.h"
  #include "/usr/include/apr-1.0/apr_perms_set.h"
  #include "/usr/include/apr-1.0/apr_poll.h"
  #include "/usr/include/apr-1.0/apr_pools.h"
  #include "/usr/include/apr-1.0/apr_portable.h"
  #include "/usr/include/apr-1.0/apr_proc_mutex.h"
  #include "/usr/include/apr-1.0/apr_random.h"
  #include "/usr/include/apr-1.0/apr_ring.h"
  #include "/usr/include/apr-1.0/apr_shm.h"
  #include "/usr/include/apr-1.0/apr_signal.h"
  #include "/usr/include/apr-1.0/apr_skiplist.h"
  #include "/usr/include/apr-1.0/apr_strings.h"
  #include "/usr/include/apr-1.0/apr_support.h"
  #include "/usr/include/apr-1.0/apr_tables.h"
  #include "/usr/include/apr-1.0/apr_thread_cond.h"
  #include "/usr/include/apr-1.0/apr_thread_mutex.h"
  #include "/usr/include/apr-1.0/apr_thread_proc.h"
  #include "/usr/include/apr-1.0/apr_thread_rwlock.h"
  #include "/usr/include/apr-1.0/apr_time.h"
  #include "/usr/include/apr-1.0/apr_user.h"
  #include "/usr/include/apr-1.0/apr_version.h"
  #include "/usr/include/apr-1.0/apr_want.h"

  // 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;
  apr_array_header_t* tmp_add_class_3;
  apr_crypto_hash_t* tmp_add_class_4;
  apr_finfo_t* tmp_add_class_5;
  apr_getopt_option_t* tmp_add_class_6;
  apr_getopt_t* tmp_add_class_7;
  apr_hdtr_t* tmp_add_class_8;
  apr_memnode_t* tmp_add_class_9;
  apr_mmap_t* tmp_add_class_10;
  apr_os_global_mutex_t* tmp_add_class_11;
  apr_os_proc_mutex_t* tmp_add_class_12;
  apr_os_sock_info_t* tmp_add_class_13;
  apr_pollfd_t* tmp_add_class_14;
  apr_proc_t* tmp_add_class_15;
  apr_sockaddr_t* tmp_add_class_16;
  apr_table_entry_t* tmp_add_class_17;
  apr_time_exp_t* tmp_add_class_18;
  apr_vformatter_buff_t* tmp_add_class_19;
  cmsghdr* tmp_add_class_20;
  f_owner_ex* tmp_add_class_21;
  file_handle* tmp_add_class_22;
  flock64* tmp_add_class_23;
  group_filter* tmp_add_class_24;
  group_req* tmp_add_class_25;
  group_source_req* tmp_add_class_26;
  in6_addr* tmp_add_class_27;
  in6_pktinfo* tmp_add_class_28;
  in_addr* tmp_add_class_29;
  in_pktinfo* tmp_add_class_30;
  iovec* tmp_add_class_31;
  ip6_mtuinfo* tmp_add_class_32;
  ip_mreq* tmp_add_class_33;
  ip_mreq_source* tmp_add_class_34;
  ip_mreqn* tmp_add_class_35;
  ip_msfilter* tmp_add_class_36;
  ip_opts* tmp_add_class_37;
  ipv6_mreq* tmp_add_class_38;
  itimerval* tmp_add_class_39;
  linger* tmp_add_class_40;
  mmsghdr* tmp_add_class_41;
  msghdr* tmp_add_class_42;
  osockaddr* tmp_add_class_43;
  rlimit64* tmp_add_class_44;
  sockaddr* tmp_add_class_45;
  sockaddr_in* tmp_add_class_46;
  sockaddr_in6* tmp_add_class_47;
  sockaddr_storage* tmp_add_class_48;
  sockaddr_un* tmp_add_class_49;
  ucontext_t* tmp_add_class_50;
  ucred* tmp_add_class_51;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/Fbe0OKomRY/dump1.h"  -I/usr/include/apr-1.0