master build fail

Hi,

My master build (up to commit 
https://gerrit.libreoffice.org/gitweb?p=core.git;a=commit;h=e90b7ebe137c638523923d7d2fe8bb8d8a8d75cc) 
failed this night with the following error messages:

> [...]
> [build CXX] vcl/unx/gtk3/gtk3fpicker.cxx
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx: In member function 
> ‘void GtkInstanceMenuButton::toggle_menu()’:
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2893:13: error: 
> ‘GdkSeat’ was not declared in this scope
>              GdkSeat* pSeat = gdk_display_get_default_seat(pDisplay);
>              ^~~~~~~
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2893:13: note: 
> suggested alternative: ‘GdkEvent’
>              GdkSeat* pSeat = gdk_display_get_default_seat(pDisplay);
>              ^~~~~~~
>              GdkEvent
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2893:22: error: ‘pSeat’ 
> was not declared in this scope
>              GdkSeat* pSeat = gdk_display_get_default_seat(pDisplay);
>                       ^~~~~
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2893:22: note: 
> suggested alternative: ‘creat’
>              GdkSeat* pSeat = gdk_display_get_default_seat(pDisplay);
>                       ^~~~~
>                       creat
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2893:30: error: 
> ‘gdk_display_get_default_seat’ was not declared in this scope
>              GdkSeat* pSeat = gdk_display_get_default_seat(pDisplay);
>                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2893:30: note: 
> suggested alternative: ‘gdk_display_get_default_screen’
>              GdkSeat* pSeat = gdk_display_get_default_seat(pDisplay);
>                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
>                               gdk_display_get_default_screen
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2894:13: error: 
> ‘gdk_seat_ungrab’ was not declared in this scope
>              gdk_seat_ungrab(pSeat);
>              ^~~~~~~~~~~~~~~
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2894:13: note: 
> suggested alternative: ‘gdk_device_ungrab’
>              gdk_seat_ungrab(pSeat);
>              ^~~~~~~~~~~~~~~
>              gdk_device_ungrab
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2929:13: error: 
> ‘GdkSeat’ was not declared in this scope
>              GdkSeat* pSeat = gdk_display_get_default_seat(pDisplay);
>              ^~~~~~~
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2929:13: note: 
> suggested alternative: ‘GdkEvent’
>              GdkSeat* pSeat = gdk_display_get_default_seat(pDisplay);
>              ^~~~~~~
>              GdkEvent
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2929:22: error: ‘pSeat’ 
> was not declared in this scope
>              GdkSeat* pSeat = gdk_display_get_default_seat(pDisplay);
>                       ^~~~~
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2929:22: note: 
> suggested alternative: ‘creat’
>              GdkSeat* pSeat = gdk_display_get_default_seat(pDisplay);
>                       ^~~~~
>                       creat
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2929:30: error: 
> ‘gdk_display_get_default_seat’ was not declared in this scope
>              GdkSeat* pSeat = gdk_display_get_default_seat(pDisplay);
>                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2929:30: note: 
> suggested alternative: ‘gdk_display_get_default_screen’
>              GdkSeat* pSeat = gdk_display_get_default_seat(pDisplay);
>                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
>                               gdk_display_get_default_screen
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2931:27: error: 
> ‘GDK_SEAT_CAPABILITY_ALL’ was not declared in this scope
>                            GDK_SEAT_CAPABILITY_ALL, true, nullptr, 
> nullptr, nullptr, nullptr);
>                            ^~~~~~~~~~~~~~~~~~~~~~~
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2931:27: note: 
> suggested alternative: ‘GTK_PRINT_CAPABILITY_SCALE’
>                            GDK_SEAT_CAPABILITY_ALL, true, nullptr, 
> nullptr, nullptr, nullptr);
>                            ^~~~~~~~~~~~~~~~~~~~~~~
>                            GTK_PRINT_CAPABILITY_SCALE
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2930:13: error: 
> ‘gdk_seat_grab’ was not declared in this scope
>              gdk_seat_grab(pSeat, 
> gtk_widget_get_window(GTK_WIDGET(m_pMenuHack)),
>              ^~~~~~~~~~~~~
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2930:13: note: 
> suggested alternative: ‘gdk_device_grab’
>              gdk_seat_grab(pSeat, 
> gtk_widget_get_window(GTK_WIDGET(m_pMenuHack)),
>              ^~~~~~~~~~~~~
>              gdk_device_grab
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx: In member function 
> ‘void GtkInstanceMenuButton::grab_broken(GdkEventGrabBroken*)’:
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2953:13: error: 
> ‘GdkSeat’ was not declared in this scope
>              GdkSeat* pSeat = gdk_display_get_default_seat(pDisplay);
>              ^~~~~~~
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2953:13: note: 
> suggested alternative: ‘GdkEvent’
>              GdkSeat* pSeat = gdk_display_get_default_seat(pDisplay);
>              ^~~~~~~
>              GdkEvent
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2953:22: error: ‘pSeat’ 
> was not declared in this scope
>              GdkSeat* pSeat = gdk_display_get_default_seat(pDisplay);
>                       ^~~~~
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2953:22: note: 
> suggested alternative: ‘creat’
>              GdkSeat* pSeat = gdk_display_get_default_seat(pDisplay);
>                       ^~~~~
>                       creat
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2953:30: error: 
> ‘gdk_display_get_default_seat’ was not declared in this scope
>              GdkSeat* pSeat = gdk_display_get_default_seat(pDisplay);
>                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2953:30: note: 
> suggested alternative: ‘gdk_display_get_default_screen’
>              GdkSeat* pSeat = gdk_display_get_default_seat(pDisplay);
>                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
>                               gdk_display_get_default_screen
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2955:27: error: 
> ‘GDK_SEAT_CAPABILITY_ALL’ was not declared in this scope
>                            GDK_SEAT_CAPABILITY_ALL, true, nullptr, 
> nullptr, nullptr, nullptr);
>                            ^~~~~~~~~~~~~~~~~~~~~~~
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2955:27: note: 
> suggested alternative: ‘GTK_PRINT_CAPABILITY_SCALE’
>                            GDK_SEAT_CAPABILITY_ALL, true, nullptr, 
> nullptr, nullptr, nullptr);
>                            ^~~~~~~~~~~~~~~~~~~~~~~
>                            GTK_PRINT_CAPABILITY_SCALE
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2954:13: error: 
> ‘gdk_seat_grab’ was not declared in this scope
>              gdk_seat_grab(pSeat, 
> gtk_widget_get_window(GTK_WIDGET(m_pMenuHack)),
>              ^~~~~~~~~~~~~
> /home/libo/master/vcl/unx/gtk3/gtk3gtkinst.cxx:2954:13: note: 
> suggested alternative: ‘gdk_device_grab’
>              gdk_seat_grab(pSeat, 
> gtk_widget_get_window(GTK_WIDGET(m_pMenuHack)),
>              ^~~~~~~~~~~~~
>              gdk_device_grab
> /home/libo/master/solenv/gbuild/LinkTarget.mk:291 : la recette pour la 
> cible 
> « /home/libo/master/workdir/CxxObject/vcl/unx/gtk3/gtk3gtkinst.o » a 
> échouée
> make[1]: *** 
> [/home/libo/master/workdir/CxxObject/vcl/unx/gtk3/gtk3gtkinst.o] Erreur 1

If I am not wrong the last commit which changed 
vcl/unx/gtk3/gtk3gtkinst.cxx is 
https://gerrit.libreoffice.org/gitweb?p=core.git;a=commit;h=b047ae6e5bde45555a20a9ad8b7d570d93496187

Best regards.

JBF

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