Temporary header file '/tmp/_8eNAOgWJk/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/core/cache_codec.h"
  #include "/usr/include/core/cache_discard_policy.h"
  #include "/usr/include/core/cache_events.h"
  #include "/usr/include/core/optional.h"
  #include "/usr/include/core/persistent_cache.h"
  #include "/usr/include/core/persistent_cache_stats.h"
  #include "/usr/include/core/persistent_string_cache.h"

  // add namespaces
  namespace boost{typedef int tmp_add_type_1;}
  boost::tmp_add_type_1 tmp_add_func_1(){return 0;};
  namespace boost{namespace detail{typedef int tmp_add_type_2;}}
  boost::detail::tmp_add_type_2 tmp_add_func_2(){return 0;};
  namespace boost{namespace mpl{typedef int tmp_add_type_3;}}
  boost::mpl::tmp_add_type_3 tmp_add_func_3(){return 0;};
  namespace core{typedef int tmp_add_type_4;}
  core::tmp_add_type_4 tmp_add_func_4(){return 0;};
  namespace core{namespace internal{typedef int tmp_add_type_5;}}
  core::internal::tmp_add_type_5 tmp_add_func_5(){return 0;};
  namespace boost{namespace exception_detail{typedef int tmp_add_type_6;}}
  boost::exception_detail::tmp_add_type_6 tmp_add_func_6(){return 0;};
  namespace boost{namespace move_detail{typedef int tmp_add_type_7;}}
  boost::move_detail::tmp_add_type_7 tmp_add_func_7(){return 0;};
  namespace boost{namespace optional_config{typedef int tmp_add_type_8;}}
  boost::optional_config::tmp_add_type_8 tmp_add_func_8(){return 0;};
  namespace boost{namespace optional_detail{typedef int tmp_add_type_9;}}
  boost::optional_detail::tmp_add_type_9 tmp_add_func_9(){return 0;};
  namespace boost{namespace optional_ns{typedef int tmp_add_type_10;}}
  boost::optional_ns::tmp_add_type_10 tmp_add_func_10(){return 0;};
  namespace boost{namespace tt_align_ns{typedef int tmp_add_type_11;}}
  boost::tt_align_ns::tmp_add_type_11 tmp_add_func_11(){return 0;};
  namespace boost{namespace type_traits{typedef int tmp_add_type_12;}}
  boost::type_traits::tmp_add_type_12 tmp_add_func_12(){return 0;};
  namespace boost{namespace type_traits_detail{typedef int tmp_add_type_13;}}
  boost::type_traits_detail::tmp_add_type_13 tmp_add_func_13(){return 0;};
  namespace boost_optional_detail{typedef int tmp_add_type_14;}
  boost_optional_detail::tmp_add_type_14 tmp_add_func_14(){return 0;};
  namespace boost_swap_impl{typedef int tmp_add_type_15;}
  boost_swap_impl::tmp_add_type_15 tmp_add_func_15(){return 0;};
  namespace mpl_{typedef int tmp_add_type_16;}
  mpl_::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/_8eNAOgWJk/dump1.h"