Temporary header file '/tmp/0_yK8FVdod/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
#define getaddrinfo_a(a,b,c,d)

  // add includes
  #include "/usr/include/toml/color.hpp"
  #include "/usr/include/toml/combinator.hpp"
  #include "/usr/include/toml/comments.hpp"
  #include "/usr/include/toml/datetime.hpp"
  #include "/usr/include/toml/exception.hpp"
  #include "/usr/include/toml/from.hpp"
  #include "/usr/include/toml/get.hpp"
  #include "/usr/include/toml/into.hpp"
  #include "/usr/include/toml/lexer.hpp"
  #include "/usr/include/toml/literal.hpp"
  #include "/usr/include/toml/macros.hpp"
  #include "/usr/include/toml/parser.hpp"
  #include "/usr/include/toml/region.hpp"
  #include "/usr/include/toml/result.hpp"
  #include "/usr/include/toml/serializer.hpp"
  #include "/usr/include/toml/source_location.hpp"
  #include "/usr/include/toml/storage.hpp"
  #include "/usr/include/toml/string.hpp"
  #include "/usr/include/toml/traits.hpp"
  #include "/usr/include/toml/types.hpp"
  #include "/usr/include/toml/utility.hpp"
  #include "/usr/include/toml/value.hpp"
  #include "/usr/include/toml/version.hpp"
  #include "/usr/include/toml.hpp"

  // add namespaces
  namespace toml{typedef int tmp_add_type_1;}
  toml::tmp_add_type_1 tmp_add_func_1(){return 0;};
  namespace toml{namespace detail{typedef int tmp_add_type_2;}}
  toml::detail::tmp_add_type_2 tmp_add_func_2(){return 0;};
  namespace toml{namespace literals{typedef int tmp_add_type_3;}}
  toml::literals::tmp_add_type_3 tmp_add_func_3(){return 0;};
  namespace toml{namespace color_ansi{typedef int tmp_add_type_4;}}
  toml::color_ansi::tmp_add_type_4 tmp_add_func_4(){return 0;};
  namespace toml{namespace color_ansi{namespace detail{typedef int tmp_add_type_5;}}}
  toml::color_ansi::detail::tmp_add_type_5 tmp_add_func_5(){return 0;};
  namespace toml{namespace literals{namespace toml_literals{typedef int tmp_add_type_6;}}}
  toml::literals::toml_literals::tmp_add_type_6 tmp_add_func_6(){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/0_yK8FVdod/dump1.h"