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

  // add includes
  #include "/usr/include/netinet/in.h"
  #include "/usr/include/spf2/spf.h"
  #include "/usr/include/spf2/spf_dns.h"
  #include "/usr/include/spf2/spf_dns_cache.h"
  #include "/usr/include/spf2/spf_dns_null.h"
  #include "/usr/include/spf2/spf_dns_resolv.h"
  #include "/usr/include/spf2/spf_dns_rr.h"
  #include "/usr/include/spf2/spf_dns_test.h"
  #include "/usr/include/spf2/spf_dns_zone.h"
  #include "/usr/include/spf2/spf_lib_version.h"
  #include "/usr/include/spf2/spf_log.h"
  #include "/usr/include/spf2/spf_record.h"
  #include "/usr/include/spf2/spf_request.h"
  #include "/usr/include/spf2/spf_response.h"
  #include "/usr/include/spf2/spf_server.h"

  // add classes
  SPF_data_cidr_struct* tmp_add_class_0;
  SPF_data_str_struct* tmp_add_class_1;
  SPF_data_union* tmp_add_class_2;
  SPF_data_var_struct* tmp_add_class_3;
  SPF_dns_rr_struct* tmp_add_class_4;
  SPF_dns_server_struct* tmp_add_class_5;
  SPF_error_struct* tmp_add_class_6;
  SPF_macro_struct* tmp_add_class_7;
  SPF_mech_struct* tmp_add_class_8;
  SPF_mod_struct* tmp_add_class_9;
  SPF_record_struct* tmp_add_class_10;
  SPF_request_struct* tmp_add_class_11;
  SPF_response_struct* tmp_add_class_12;
  SPF_server_struct* tmp_add_class_13;
  addrinfo* tmp_add_class_14;
  cmsghdr* tmp_add_class_15;
  gaicb* tmp_add_class_16;
  group_filter* tmp_add_class_17;
  group_req* tmp_add_class_18;
  group_source_req* tmp_add_class_19;
  hostent* tmp_add_class_20;
  in6_addr* tmp_add_class_21;
  in6_pktinfo* tmp_add_class_22;
  in_addr* tmp_add_class_23;
  in_pktinfo* tmp_add_class_24;
  iovec* tmp_add_class_25;
  ip6_mtuinfo* tmp_add_class_26;
  ip_mreq* tmp_add_class_27;
  ip_mreq_source* tmp_add_class_28;
  ip_mreqn* tmp_add_class_29;
  ip_msfilter* tmp_add_class_30;
  ip_opts* tmp_add_class_31;
  ipv6_mreq* tmp_add_class_32;
  linger* tmp_add_class_33;
  mmsghdr* tmp_add_class_34;
  msghdr* tmp_add_class_35;
  netent* tmp_add_class_36;
  ns_tcp_tsig_state* tmp_add_class_37;
  ns_tsig_key* tmp_add_class_38;
  osockaddr* tmp_add_class_39;
  protoent* tmp_add_class_40;
  rpcent* tmp_add_class_41;
  servent* tmp_add_class_42;
  sockaddr* tmp_add_class_43;
  sockaddr_in* tmp_add_class_44;
  sockaddr_in6* tmp_add_class_45;
  sockaddr_storage* tmp_add_class_46;
  ucontext_t* tmp_add_class_47;
  ucred* tmp_add_class_48;

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