Temporary header file '/tmp/EmWqaPaqLH/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
#define getaddrinfo_a(a,b,c,d)

  // add includes
  #include "/usr/include/pog/action.h"
  #include "/usr/include/pog/automaton.h"
  #include "/usr/include/pog/digraph_algo.h"
  #include "/usr/include/pog/errors.h"
  #include "/usr/include/pog/filter_view.h"
  #include "/usr/include/pog/grammar.h"
  #include "/usr/include/pog/html_report.h"
  #include "/usr/include/pog/item.h"
  #include "/usr/include/pog/operations/follow.h"
  #include "/usr/include/pog/operations/lookahead.h"
  #include "/usr/include/pog/operations/operation.h"
  #include "/usr/include/pog/operations/read.h"
  #include "/usr/include/pog/parser.h"
  #include "/usr/include/pog/parser_report.h"
  #include "/usr/include/pog/parsing_table.h"
  #include "/usr/include/pog/pog.h"
  #include "/usr/include/pog/precedence.h"
  #include "/usr/include/pog/relations/includes.h"
  #include "/usr/include/pog/relations/lookback.h"
  #include "/usr/include/pog/relations/relation.h"
  #include "/usr/include/pog/rule.h"
  #include "/usr/include/pog/rule_builder.h"
  #include "/usr/include/pog/state.h"
  #include "/usr/include/pog/symbol.h"
  #include "/usr/include/pog/token.h"
  #include "/usr/include/pog/token_builder.h"
  #include "/usr/include/pog/tokenizer.h"
  #include "/usr/include/pog/types/state_and_rule.h"
  #include "/usr/include/pog/types/state_and_symbol.h"
  #include "/usr/include/pog/utils.h"

  // add namespaces
  namespace fmt{typedef int tmp_add_type_1;}
  fmt::tmp_add_type_1 tmp_add_func_1(){return 0;};
  namespace fmt{namespace v9{typedef int tmp_add_type_2;}}
  fmt::v9::tmp_add_type_2 tmp_add_func_2(){return 0;};
  namespace fmt{namespace v9{namespace align{typedef int tmp_add_type_3;}}}
  fmt::v9::align::tmp_add_type_3 tmp_add_func_3(){return 0;};
  namespace fmt{namespace v9{namespace detail{typedef int tmp_add_type_4;}}}
  fmt::v9::detail::tmp_add_type_4 tmp_add_func_4(){return 0;};
  namespace fmt{namespace v9{namespace detail{namespace digits{typedef int tmp_add_type_5;}}}}
  fmt::v9::detail::digits::tmp_add_type_5 tmp_add_func_5(){return 0;};
  namespace fmt{namespace v9{namespace detail{namespace dragonbox{typedef int tmp_add_type_6;}}}}
  fmt::v9::detail::dragonbox::tmp_add_type_6 tmp_add_func_6(){return 0;};
  namespace fmt{namespace v9{namespace enums{typedef int tmp_add_type_7;}}}
  fmt::v9::enums::tmp_add_type_7 tmp_add_func_7(){return 0;};
  namespace fmt{namespace v9{namespace literals{typedef int tmp_add_type_8;}}}
  fmt::v9::literals::tmp_add_type_8 tmp_add_func_8(){return 0;};
  namespace fmt{namespace v9{namespace sign{typedef int tmp_add_type_9;}}}
  fmt::v9::sign::tmp_add_type_9 tmp_add_func_9(){return 0;};
  namespace pog{typedef int tmp_add_type_10;}
  pog::tmp_add_type_10 tmp_add_func_10(){return 0;};
  namespace pog{namespace detail{typedef int tmp_add_type_11;}}
  pog::detail::tmp_add_type_11 tmp_add_func_11(){return 0;};
  namespace re2{typedef int tmp_add_type_12;}
  re2::tmp_add_type_12 tmp_add_func_12(){return 0;};
  namespace re2{namespace hooks{typedef int tmp_add_type_13;}}
  re2::hooks::tmp_add_type_13 tmp_add_func_13(){return 0;};
  namespace fmt{namespace v9{namespace detail{namespace __anonf4930dd99511{typedef int tmp_add_type_14;}}}}
  fmt::v9::detail::__anonf4930dd99511::tmp_add_type_14 tmp_add_func_14(){return 0;};
  namespace fmt{namespace v9{namespace detail_exported{typedef int tmp_add_type_15;}}}
  fmt::v9::detail_exported::tmp_add_type_15 tmp_add_func_15(){return 0;};
  namespace re2{namespace re2_internal{typedef int tmp_add_type_16;}}
  re2::re2_internal::tmp_add_type_16 tmp_add_func_16(){return 0;};

  // 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;

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