[v3] GTK4 build issue on Linux and workaround for the issue

[COD3HUNT3R]

As v3 is currently not accepting any bug reports I am posting this as discussion with a workaround.

If you try to build with wails3 application with -tags gtk4 you will get following error.

task: [linux:build:native] go build -tags production,gtk4 -trimpath -buildvcs=false -ldflags="-w -s" -o bin/wails3p
# github.com/wailsapp/wails/v3/pkg/application
linux_cgo_gtk4.c: In function ‘window_move_x11’:
linux_cgo_gtk4.c:913:5: warning: ‘gdk_x11_display_get_xdisplay’ is deprecated [-Wdeprecated-declarations]
  913 |     Display *xdisplay = gdk_x11_display_get_xdisplay(display);
      |     ^~~~~~~
In file included from /usr/include/gtk-4.0/gdk/x11/gdkx.h:39,
                 from linux_cgo_gtk4.c:6:
/usr/include/gtk-4.0/gdk/x11/gdkx11display.h:60:15: note: declared here
   60 | Display *     gdk_x11_display_get_xdisplay     (GdkDisplay  *display);
      |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
linux_cgo_gtk4.c:914:5: warning: ‘gdk_x11_surface_get_xid’ is deprecated [-Wdeprecated-declarations]
  914 |     Window xwindow = gdk_x11_surface_get_xid(GDK_X11_SURFACE(surface));
      |     ^~~~~~
In file included from /usr/include/gtk-4.0/gdk/x11/gdkx.h:47:
/usr/include/gtk-4.0/gdk/x11/gdkx11surface.h:56:10: note: declared here
   56 | Window   gdk_x11_surface_get_xid           (GdkSurface   *surface);
      |          ^~~~~~~~~~~~~~~~~~~~~~~
linux_cgo_gtk4.c: In function ‘window_get_position_x11’:
linux_cgo_gtk4.c:936:5: warning: ‘gdk_x11_display_get_xdisplay’ is deprecated [-Wdeprecated-declarations]
  936 |     Display *xdisplay = gdk_x11_display_get_xdisplay(display);
      |     ^~~~~~~
/usr/include/gtk-4.0/gdk/x11/gdkx11display.h:60:15: note: declared here
   60 | Display *     gdk_x11_display_get_xdisplay     (GdkDisplay  *display);
      |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
linux_cgo_gtk4.c:937:5: warning: ‘gdk_x11_surface_get_xid’ is deprecated [-Wdeprecated-declarations]
  937 |     Window xwindow = gdk_x11_surface_get_xid(GDK_X11_SURFACE(surface));
      |     ^~~~~~
/usr/include/gtk-4.0/gdk/x11/gdkx11surface.h:56:10: note: declared here
   56 | Window   gdk_x11_surface_get_xid           (GdkSurface   *surface);
      |          ^~~~~~~~~~~~~~~~~~~~~~~

So, Wails is currently using deprecated gdk functions which may get removed in near future. However you can tell the compiler to ignore and build the application anyway.

export CGO_CFLAGS="-Wno-deprecated-declarations"
wails3 build -tags gtk4

[leaanthony]

Very happily accepting bug reports for tagged releases 👍