Temporary header file '/tmp/47otmIYYBy/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/gnutls/abstract.h"
  #include "/usr/include/gnutls/compat.h"
  #include "/usr/include/gnutls/crypto.h"
  #include "/usr/include/gnutls/dane.h"
  #include "/usr/include/gnutls/dtls.h"
  #include "/usr/include/gnutls/gnutls.h"
  #include "/usr/include/gnutls/gnutlsxx.h"
  #include "/usr/include/gnutls/ocsp.h"
  #include "/usr/include/gnutls/openpgp.h"
  #include "/usr/include/gnutls/openssl.h"
  #include "/usr/include/gnutls/pkcs11.h"
  #include "/usr/include/gnutls/pkcs12.h"
  #include "/usr/include/gnutls/pkcs7.h"
  #include "/usr/include/gnutls/self-test.h"
  #include "/usr/include/gnutls/socket.h"
  #include "/usr/include/gnutls/system-keys.h"
  #include "/usr/include/gnutls/tpm.h"
  #include "/usr/include/gnutls/urls.h"
  #include "/usr/include/gnutls/x509-ext.h"
  #include "/usr/include/gnutls/x509.h"

  // add namespaces
  namespace gnutls{typedef int tmp_add_type_1;}
  gnutls::tmp_add_type_1 tmp_add_func_1(){return 0;};

  // add classes
  _BIO* tmp_add_class_0;
  _SSL* tmp_add_class_1;
  _SSL_CTX* tmp_add_class_2;
  cmsghdr* tmp_add_class_3;
  gnutls_cert_retr_st* tmp_add_class_4;
  gnutls_custom_url_st* tmp_add_class_5;
  gnutls_library_config_st* tmp_add_class_6;
  gnutls_ocsp_data_st* tmp_add_class_7;
  gnutls_params_st* tmp_add_class_8;
  gnutls_pcert_st* tmp_add_class_9;
  gnutls_pkcs7_signature_info_st* tmp_add_class_10;
  gnutls_retr2_st* tmp_add_class_11;
  gnutls_x509_ava_st* tmp_add_class_12;
  gnutls_x509_ext_st* tmp_add_class_13;
  gnutls_x509_policy_st* tmp_add_class_14;
  iovec* tmp_add_class_15;
  linger* tmp_add_class_16;
  mmsghdr* tmp_add_class_17;
  msghdr* tmp_add_class_18;
  osockaddr* tmp_add_class_19;
  sockaddr* tmp_add_class_20;
  sockaddr_storage* tmp_add_class_21;
  ucred* tmp_add_class_22;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/47otmIYYBy/dump1.h"