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

  // add defines
  #define __STDC_VERSION__ 201710L
#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) 
#define VCFLIB_VERSION "some version"

  // add includes
  #include "/usr/include/intervaltree/IntervalTree.h"
  #include "/usr/include/vcflib/Variant.h"
  #include "/usr/include/vcflib/catch.hpp"
  #include "/usr/include/vcflib/cdflib.hpp"
  #include "/usr/include/vcflib/convert.h"
  #include "/usr/include/vcflib/filevercmp.h"
  #include "/usr/include/vcflib/gpatInfo.hpp"
  #include "/usr/include/vcflib/join.h"
  #include "/usr/include/vcflib/makeUnique.h"
  #include "/usr/include/vcflib/mt19937ar.h"
  #include "/usr/include/vcflib/multichoose.h"
  #include "/usr/include/vcflib/multipermute.h"
  #include "/usr/include/vcflib/pdflib.hpp"
  #include "/usr/include/vcflib/rnglib.hpp"
  #include "/usr/include/vcflib/split.h"
  #include "/usr/include/vcflib/var.hpp"

  // add namespaces
  namespace Catch{typedef int tmp_add_type_1;}
  Catch::tmp_add_type_1 tmp_add_func_1(){return 0;};
  namespace Catch{namespace Detail{typedef int tmp_add_type_2;}}
  Catch::Detail::tmp_add_type_2 tmp_add_func_2(){return 0;};
  namespace Catch{namespace Generators{typedef int tmp_add_type_3;}}
  Catch::Generators::tmp_add_type_3 tmp_add_func_3(){return 0;};
  namespace Catch{namespace Internal{typedef int tmp_add_type_4;}}
  Catch::Internal::tmp_add_type_4 tmp_add_func_4(){return 0;};
  namespace Catch{namespace Matchers{typedef int tmp_add_type_5;}}
  Catch::Matchers::tmp_add_type_5 tmp_add_func_5(){return 0;};
  namespace Catch{namespace Matchers{namespace Impl{typedef int tmp_add_type_6;}}}
  Catch::Matchers::Impl::tmp_add_type_6 tmp_add_func_6(){return 0;};
  namespace Catch{namespace Matchers{namespace Impl{namespace Generic{typedef int tmp_add_type_7;}}}}
  Catch::Matchers::Impl::Generic::tmp_add_type_7 tmp_add_func_7(){return 0;};
  namespace Catch{namespace Matchers{namespace Impl{namespace StdString{typedef int tmp_add_type_8;}}}}
  Catch::Matchers::Impl::StdString::tmp_add_type_8 tmp_add_func_8(){return 0;};
  namespace Catch{namespace TupleDetail{typedef int tmp_add_type_9;}}
  Catch::TupleDetail::tmp_add_type_9 tmp_add_func_9(){return 0;};
  namespace Detail{typedef int tmp_add_type_10;}
  Detail::tmp_add_type_10 tmp_add_func_10(){return 0;};
  namespace StripedSmithWaterman{typedef int tmp_add_type_11;}
  StripedSmithWaterman::tmp_add_type_11 tmp_add_func_11(){return 0;};
  namespace vcflib{typedef int tmp_add_type_12;}
  vcflib::tmp_add_type_12 tmp_add_func_12(){return 0;};

  // add classes
  BGZF* tmp_add_class_0;
  CSmithWatermanGotoh* tmp_add_class_1;
  FastaIndex* tmp_add_class_2;
  FastaIndexEntry* tmp_add_class_3;
  FastaReference* tmp_add_class_4;
  FastaRegion* tmp_add_class_5;
  IndelAllele* tmp_add_class_6;
  Tabix* tmp_add_class_7;
  _G_fpos64_t* tmp_add_class_8;
  _G_fpos_t* tmp_add_class_9;
  _IO_cookie_io_functions_t* tmp_add_class_10;
  genotype* tmp_add_class_11;
  gl* tmp_add_class_12;
  gp* tmp_add_class_13;
  gt* tmp_add_class_14;
  hFILE* tmp_add_class_15;
  htsFile* tmp_add_class_16;
  htsFormat* tmp_add_class_17;
  htsThreadPool* tmp_add_class_18;
  hts_itr_t* tmp_add_class_19;
  hts_opt* tmp_add_class_20;
  hts_pair64_max_t* tmp_add_class_21;
  hts_pair64_t* tmp_add_class_22;
  hts_pair_pos_t* tmp_add_class_23;
  hts_reglist_t* tmp_add_class_24;
  ks_tokaux_t* tmp_add_class_25;
  kstring_t* tmp_add_class_26;
  pl* tmp_add_class_27;
  pooled* tmp_add_class_28;
  probaln_par_t* tmp_add_class_29;
  statx_timestamp* tmp_add_class_30;
  tbx_conf_t* tmp_add_class_31;
  tbx_t* tmp_add_class_32;
  zvar* tmp_add_class_33;

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