diff -up mozilla-release-c61f5f5ead48c78a80c80db5c489bdc7cfaf8175/old-configure.in.gdk-version mozilla-release-c61f5f5ead48c78a80c80db5c489bdc7cfaf8175/old-configure.in

--- mozilla-release-c61f5f5ead48c78a80c80db5c489bdc7cfaf8175/old-configure.in.gdk-version	2018-03-10 03:54:17.000000000 +0100

+++ mozilla-release-c61f5f5ead48c78a80c80db5c489bdc7cfaf8175/old-configure.in	2018-03-28 13:11:06.294873487 +0200

@@ -61,6 +61,7 @@ CAIRO_VERSION=1.10

 GTK2_VERSION=2.18.0

 GTK3_VERSION=3.4.0

 GDK_VERSION_MAX_ALLOWED=GDK_VERSION_3_4

+GDK_VERSION_MIN_REQUIRED=GDK_VERSION_3_4

 WINDRES_VERSION=2.14.90

 W32API_VERSION=3.14

 GCONF_VERSION=1.2.1

@@ -2173,6 +2174,7 @@ if test "$COMPILE_ENVIRONMENT"; then

     dnl GDK_VERSION_MIN_REQUIRED is not set here as GDK3 deprecated warnings

     dnl are suppressed by widget/gtk/compat-gtk3/gdk/gdkversionmacros.h.

     AC_DEFINE_UNQUOTED(GDK_VERSION_MAX_ALLOWED,$GDK_VERSION_MAX_ALLOWED)

+    AC_DEFINE_UNQUOTED(GDK_VERSION_MIN_REQUIRED,$GDK_VERSION_MIN_REQUIRED)

     GLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_32

   fi

   if test "$MOZ_WIDGET_TOOLKIT" = gtk2; then