Temporary header file '/tmp/xdlADrywX6/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/unagi/atoms.h"
  #include "/usr/include/unagi/display.h"
  #include "/usr/include/unagi/event.h"
  #include "/usr/include/unagi/key.h"
  #include "/usr/include/unagi/plugin.h"
  #include "/usr/include/unagi/plugin_common.h"
  #include "/usr/include/unagi/rendering.h"
  #include "/usr/include/unagi/structs.h"
  #include "/usr/include/unagi/system.h"
  #include "/usr/include/unagi/util.h"
  #include "/usr/include/unagi/window.h"

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/xdlADrywX6/dump1.h"  -I/usr/include/unagi

In file included from /tmp/xdlADrywX6/dump1.h:12:
/usr/include/unagi/atoms.h:29:10: fatal error: xcb/xcb.h: No such file or directory
   29 | #include <xcb/xcb.h>
      |          ^~~~~~~~~~~
compilation terminated.