Temporary header file '/tmp/_pWByGCzZc/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/flatzebra/Couple.h"
  #include "/usr/include/flatzebra/GameEngine.h"
  #include "/usr/include/flatzebra/Joystick.h"
  #include "/usr/include/flatzebra/KeyState.h"
  #include "/usr/include/flatzebra/PixmapArray.h"
  #include "/usr/include/flatzebra/PixmapLoadError.h"
  #include "/usr/include/flatzebra/RCouple.h"
  #include "/usr/include/flatzebra/RSprite.h"
  #include "/usr/include/flatzebra/SoundMixer.h"
  #include "/usr/include/flatzebra/Sprite.h"

  // add namespaces
  namespace flatzebra{typedef int tmp_add_type_1;}
  flatzebra::tmp_add_type_1 tmp_add_func_1(){return 0;};

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

In file included from /usr/include/flatzebra/Sprite.h:27,
                 from /usr/include/flatzebra/GameEngine.h:28,
                 from /tmp/_pWByGCzZc/dump1.h:13:
/usr/include/flatzebra/PixmapArray.h:28:10: fatal error: SDL.h: No such file or directory
   28 | #include <SDL.h>
      |          ^~~~~~~
compilation terminated.