make  all-am
make[1]: Entering directory '/home/jelle/repos/scroom'
  CXX      gui/src/scroom-main.o
In file included from gui/src/main.cc:26:
./inc/scroom/gtk-helpers.hh:23:7: error: ‘GtkFunction’ does not name a type; did you mean ‘AtkFunction’?
   23 |       GtkFunction f;
      |       ^~~~~~~~~~~
      |       AtkFunction
In file included from gui/src/callbacks.hh:19,
                 from gui/src/main.cc:28:
gui/src/view.hh:52:3: error: ‘GtkRuler’ does not name a type
   52 |   GtkRuler*                                          hruler;
      |   ^~~~~~~~
gui/src/view.hh:53:3: error: ‘GtkRuler’ does not name a type
   53 |   GtkRuler*                                          vruler;
      |   ^~~~~~~~
gui/src/main.cc: In function ‘int main(int, char**)’:
gui/src/main.cc:131:20: warning: ‘void gdk_threads_init()’ is deprecated [-Wdeprecated-declarations]
  131 |   gdk_threads_init();
      |                    ^
In file included from /usr/include/gtk-3.0/gdk/gdk.h:61,
                 from /usr/include/gtk-3.0/gtk/gtk.h:30,
                 from gui/src/main.cc:19:
/usr/include/gtk-3.0/gdk/gdkthreads.h:44:10: note: declared here
   44 | void     gdk_threads_init                     (void);
      |          ^~~~~~~~~~~~~~~~
gui/src/main.cc:131:20: warning: ‘void gdk_threads_init()’ is deprecated [-Wdeprecated-declarations]
  131 |   gdk_threads_init();
      |                    ^
In file included from /usr/include/gtk-3.0/gdk/gdk.h:61,
                 from /usr/include/gtk-3.0/gtk/gtk.h:30,
                 from gui/src/main.cc:19:
/usr/include/gtk-3.0/gdk/gdkthreads.h:44:10: note: declared here
   44 | void     gdk_threads_init                     (void);
      |          ^~~~~~~~~~~~~~~~
gui/src/main.cc:133:21: warning: ‘void gdk_threads_enter()’ is deprecated [-Wdeprecated-declarations]
  133 |   gdk_threads_enter();
      |                     ^
In file included from /usr/include/gtk-3.0/gdk/gdk.h:61,
                 from /usr/include/gtk-3.0/gtk/gtk.h:30,
                 from gui/src/main.cc:19:
/usr/include/gtk-3.0/gdk/gdkthreads.h:46:10: note: declared here
   46 | void     gdk_threads_enter                    (void);
      |          ^~~~~~~~~~~~~~~~~
gui/src/main.cc:133:21: warning: ‘void gdk_threads_enter()’ is deprecated [-Wdeprecated-declarations]
  133 |   gdk_threads_enter();
      |                     ^
In file included from /usr/include/gtk-3.0/gdk/gdk.h:61,
                 from /usr/include/gtk-3.0/gtk/gtk.h:30,
                 from gui/src/main.cc:19:
/usr/include/gtk-3.0/gdk/gdkthreads.h:46:10: note: declared here
   46 | void     gdk_threads_enter                    (void);
      |          ^~~~~~~~~~~~~~~~~
gui/src/main.cc:134:3: error: ‘gtk_set_locale’ was not declared in this scope; did you mean ‘setlocale’?
  134 |   gtk_set_locale();
      |   ^~~~~~~~~~~~~~
      |   setlocale
gui/src/main.cc:140:21: warning: ‘void gdk_threads_leave()’ is deprecated [-Wdeprecated-declarations]
  140 |   gdk_threads_leave();
      |                     ^
In file included from /usr/include/gtk-3.0/gdk/gdk.h:61,
                 from /usr/include/gtk-3.0/gtk/gtk.h:30,
                 from gui/src/main.cc:19:
/usr/include/gtk-3.0/gdk/gdkthreads.h:48:10: note: declared here
   48 | void     gdk_threads_leave                    (void);
      |          ^~~~~~~~~~~~~~~~~
gui/src/main.cc:140:21: warning: ‘void gdk_threads_leave()’ is deprecated [-Wdeprecated-declarations]
  140 |   gdk_threads_leave();
      |                     ^
In file included from /usr/include/gtk-3.0/gdk/gdk.h:61,
                 from /usr/include/gtk-3.0/gtk/gtk.h:30,
                 from gui/src/main.cc:19:
/usr/include/gtk-3.0/gdk/gdkthreads.h:48:10: note: declared here
   48 | void     gdk_threads_leave                    (void);
      |          ^~~~~~~~~~~~~~~~~
make[1]: *** [Makefile:2796: gui/src/scroom-main.o] Error 1
make[1]: Leaving directory '/home/jelle/repos/scroom'
make: *** [Makefile:1619: all] Error 2