Temporary header file '/tmp/rOcachpUS4/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
#define getaddrinfo_a(a,b,c,d)

  // add includes
  #include "/usr/include/CLI/App.hpp"
  #include "/usr/include/CLI/CLI.hpp"
  #include "/usr/include/CLI/Config.hpp"
  #include "/usr/include/CLI/ConfigFwd.hpp"
  #include "/usr/include/CLI/Error.hpp"
  #include "/usr/include/CLI/Formatter.hpp"
  #include "/usr/include/CLI/FormatterFwd.hpp"
  #include "/usr/include/CLI/Macros.hpp"
  #include "/usr/include/CLI/Option.hpp"
  #include "/usr/include/CLI/Split.hpp"
  #include "/usr/include/CLI/StringTools.hpp"
  #include "/usr/include/CLI/Timer.hpp"
  #include "/usr/include/CLI/TypeTools.hpp"
  #include "/usr/include/CLI/Validators.hpp"
  #include "/usr/include/CLI/Version.hpp"

  // add namespaces
  namespace CLI{typedef int tmp_add_type_1;}
  CLI::tmp_add_type_1 tmp_add_func_1(){return 0;};
  namespace CLI{namespace detail{typedef int tmp_add_type_2;}}
  CLI::detail::tmp_add_type_2 tmp_add_func_2(){return 0;};
  namespace CLI{namespace enums{typedef int tmp_add_type_3;}}
  CLI::enums::tmp_add_type_3 tmp_add_func_3(){return 0;};
  namespace CLI{namespace FailureMessage{typedef int tmp_add_type_4;}}
  CLI::FailureMessage::tmp_add_type_4 tmp_add_func_4(){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/rOcachpUS4/dump1.h"