Temporary header file '/tmp/dd12u9yD2F/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/fido/bio.h"
  #include "/usr/include/fido/config.h"
  #include "/usr/include/fido/credman.h"
  #include "/usr/include/fido/eddsa.h"
  #include "/usr/include/fido/err.h"
  #include "/usr/include/fido/es256.h"
  #include "/usr/include/fido/es384.h"
  #include "/usr/include/fido/param.h"
  #include "/usr/include/fido/rs256.h"
  #include "/usr/include/fido/types.h"
  #include "/usr/include/fido.h"

  // add classes
  ASN1_ENCODING_st* tmp_add_class_0;
  BIO_sock_info_u* tmp_add_class_1;
  BIT_STRING_BITNAME_st* tmp_add_class_2;
  _G_fpos64_t* tmp_add_class_3;
  _G_fpos_t* tmp_add_class_4;
  _IO_cookie_io_functions_t* tmp_add_class_5;
  asn1_string_st* tmp_add_class_6;
  asn1_string_table_st* tmp_add_class_7;
  asn1_type_st* tmp_add_class_8;
  crypto_ex_data_st* tmp_add_class_9;
  crypto_threadid_st* tmp_add_class_10;
  evp_cipher_info_st* tmp_add_class_11;
  fido_dev_io* tmp_add_class_12;
  fido_dev_transport* tmp_add_class_13;
  obj_name_st* tmp_add_class_14;
  ossl_algorithm_st* tmp_add_class_15;
  ossl_dispatch_st* tmp_add_class_16;
  ossl_item_st* tmp_add_class_17;
  ossl_param_st* tmp_add_class_18;
  rsa_oaep_params_st* tmp_add_class_19;
  rsa_pss_params_st* tmp_add_class_20;
  ucontext_t* tmp_add_class_21;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/dd12u9yD2F/dump1.h"