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diff -up mozilla-release-c61f5f5ead48c78a80c80db5c489bdc7cfaf8175/old-configure.in.gdk-version mozilla-release-c61f5f5ead48c78a80c80db5c489bdc7cfaf8175/old-configure.in
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--- mozilla-release-c61f5f5ead48c78a80c80db5c489bdc7cfaf8175/old-configure.in.gdk-version	2018-03-10 03:54:17.000000000 +0100
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+++ mozilla-release-c61f5f5ead48c78a80c80db5c489bdc7cfaf8175/old-configure.in	2018-03-28 13:11:06.294873487 +0200
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@@ -61,6 +61,7 @@ CAIRO_VERSION=1.10
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 GTK2_VERSION=2.18.0
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 GTK3_VERSION=3.4.0
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 GDK_VERSION_MAX_ALLOWED=GDK_VERSION_3_4
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+GDK_VERSION_MIN_REQUIRED=GDK_VERSION_3_4
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 WINDRES_VERSION=2.14.90
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 W32API_VERSION=3.14
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 GCONF_VERSION=1.2.1
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@@ -2173,6 +2174,7 @@ if test "$COMPILE_ENVIRONMENT"; then
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     dnl GDK_VERSION_MIN_REQUIRED is not set here as GDK3 deprecated warnings
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     dnl are suppressed by widget/gtk/compat-gtk3/gdk/gdkversionmacros.h.
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     AC_DEFINE_UNQUOTED(GDK_VERSION_MAX_ALLOWED,$GDK_VERSION_MAX_ALLOWED)
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+    AC_DEFINE_UNQUOTED(GDK_VERSION_MIN_REQUIRED,$GDK_VERSION_MIN_REQUIRED)
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     GLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_32
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   fi
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   if test "$MOZ_WIDGET_TOOLKIT" = gtk2; then