Temporary header file '/tmp/0y_iDIlhGU/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
#ifdef __cplusplus
// C17 compat layer
#define _Alignof(type) alignof(type)
#endif
#define getaddrinfo_a(a,b,c,d)

  // add includes
  #include "/usr/include/rcutils/rcutils/allocator.h"
  #include "/usr/include/rcutils/rcutils/cmdline_parser.h"
  #include "/usr/include/rcutils/rcutils/env.h"
  #include "/usr/include/rcutils/rcutils/error_handling.h"
  #include "/usr/include/rcutils/rcutils/filesystem.h"
  #include "/usr/include/rcutils/rcutils/find.h"
  #include "/usr/include/rcutils/rcutils/format_string.h"
  #include "/usr/include/rcutils/rcutils/get_env.h"
  #include "/usr/include/rcutils/rcutils/isalnum_no_locale.h"
  #include "/usr/include/rcutils/rcutils/logging.h"
  #include "/usr/include/rcutils/rcutils/logging_macros.h"
  #include "/usr/include/rcutils/rcutils/macros.h"
  #include "/usr/include/rcutils/rcutils/process.h"
  #include "/usr/include/rcutils/rcutils/qsort.h"
  #include "/usr/include/rcutils/rcutils/repl_str.h"
  #include "/usr/include/rcutils/rcutils/shared_library.h"
  #include "/usr/include/rcutils/rcutils/snprintf.h"
  #include "/usr/include/rcutils/rcutils/split.h"
  #include "/usr/include/rcutils/rcutils/strcasecmp.h"
  #include "/usr/include/rcutils/rcutils/strdup.h"
  #include "/usr/include/rcutils/rcutils/strerror.h"
  #include "/usr/include/rcutils/rcutils/testing/fault_injection.h"
  #include "/usr/include/rcutils/rcutils/time.h"
  #include "/usr/include/rcutils/rcutils/types/array_list.h"
  #include "/usr/include/rcutils/rcutils/types/char_array.h"
  #include "/usr/include/rcutils/rcutils/types/hash_map.h"
  #include "/usr/include/rcutils/rcutils/types/rcutils_ret.h"
  #include "/usr/include/rcutils/rcutils/types/string_array.h"
  #include "/usr/include/rcutils/rcutils/types/string_map.h"
  #include "/usr/include/rcutils/rcutils/types/uint8_array.h"
  #include "/usr/include/rcutils/rcutils/types.h"
  #include "/usr/include/rcutils/rcutils/visibility_control.h"
  #include "/usr/include/rcutils/rcutils/visibility_control_macros.h"

  // 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;
  rcutils_allocator_s* tmp_add_class_3;
  rcutils_array_list_s* tmp_add_class_4;
  rcutils_char_array_s* tmp_add_class_5;
  rcutils_dir_iter_s* tmp_add_class_6;
  rcutils_error_state_s* tmp_add_class_7;
  rcutils_error_string_s* tmp_add_class_8;
  rcutils_hash_map_s* tmp_add_class_9;
  rcutils_log_location_s* tmp_add_class_10;
  rcutils_shared_library_s* tmp_add_class_11;
  rcutils_string_array_s* tmp_add_class_12;
  rcutils_string_map_s* tmp_add_class_13;
  rcutils_uint8_array_s* tmp_add_class_14;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/0y_iDIlhGU/dump1.h"  -I/usr/include/rcutils