Temporary header file '/tmp/DjxMZ4Moh8/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/gmpc/config1.h"
  #include "/usr/include/gmpc/gmpc-extras.h"
  #include "/usr/include/gmpc/gmpc-meta-text-view.h"
  #include "/usr/include/gmpc/gmpc-meta-watcher.h"
  #include "/usr/include/gmpc/gmpc-metaimage.h"
  #include "/usr/include/gmpc/gmpc-mpddata-model-sort.h"
  #include "/usr/include/gmpc/gmpc-mpddata-model.h"
  #include "/usr/include/gmpc/gmpc-mpddata-treeview.h"
  #include "/usr/include/gmpc/gmpc-profiles.h"
  #include "/usr/include/gmpc/gmpc-version.h"
  #include "/usr/include/gmpc/gmpc_easy_download.h"
  #include "/usr/include/gmpc/metadata.h"
  #include "/usr/include/gmpc/misc.h"
  #include "/usr/include/gmpc/mpd-async-request.h"
  #include "/usr/include/gmpc/mpdinteraction.h"
  #include "/usr/include/gmpc/playlist3-messages.h"
  #include "/usr/include/gmpc/plugin.h"
  #include "/usr/include/gmpc/status_icon.h"

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/DjxMZ4Moh8/dump1.h"  -I/usr/include/gmpc -I/usr/include/libmpd-1.0 -I/usr/include/glib-2.0 -I/lib/arm-linux-gnueabihf/glib-2.0/include

In file included from /tmp/DjxMZ4Moh8/dump1.h:13:
/usr/include/gmpc/gmpc-extras.h:6:10: fatal error: gtk/gtk.h: No such file or directory
    6 | #include <gtk/gtk.h>
      |          ^~~~~~~~~~~
compilation terminated.