Temporary header file '/tmp/6ZQpqTC1kj/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/lgpio.h"

  // add classes
  gpio_v2_line_attribute* tmp_add_class_0;
  gpio_v2_line_config* tmp_add_class_1;
  gpio_v2_line_config_attribute* tmp_add_class_2;
  gpio_v2_line_event* tmp_add_class_3;
  gpio_v2_line_info* tmp_add_class_4;
  gpio_v2_line_info_changed* tmp_add_class_5;
  gpio_v2_line_request* tmp_add_class_6;
  gpio_v2_line_values* tmp_add_class_7;
  gpiochip_info* tmp_add_class_8;
  gpioevent_data* tmp_add_class_9;
  gpioevent_request* tmp_add_class_10;
  gpiohandle_config* tmp_add_class_11;
  gpiohandle_data* tmp_add_class_12;
  gpiohandle_request* tmp_add_class_13;
  gpioline_info* tmp_add_class_14;
  gpioline_info_changed* tmp_add_class_15;
  lgChipInfo_s* tmp_add_class_16;
  lgGpioAlert_s* tmp_add_class_17;
  lgLineInfo_s* tmp_add_class_18;
  lgPulse_s* tmp_add_class_19;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/6ZQpqTC1kj/dump1.h"