The update to 2.0.8 broke the build of the DirectFB renderer such that
it cannot be used anymore, see
https://bugzilla.libsdl.org/show_bug.cgi?id=4123. This fixes the
regression by re-inserting the affected line in the configure script.

diff --git a/configure b/configure
index 1c7f87e..c5ce9c3 100755
--- a/configure
+++ b/configure
@@ -21475,6 +21487,9 @@ fi
 
 $as_echo "#define SDL_VIDEO_DRIVER_DIRECTFB 1" >>confdefs.h
 
+
+$as_echo "#define SDL_VIDEO_RENDER_DIRECTFB 1" >>confdefs.h
+
             SOURCES="$SOURCES $srcdir/src/video/directfb/*.c"
             EXTRA_CFLAGS="$EXTRA_CFLAGS $DIRECTFB_CFLAGS"
 
diff --git a/configure.in b/configure.in
index 1c7e793..262885b 100644
--- a/configure.in
+++ b/configure.in
@@ -2150,6 +2150,7 @@ AC_HELP_STRING([--enable-directfb-shared], [dynamically load directfb support [[
                               , enable_directfb_shared=yes)
 
             AC_DEFINE(SDL_VIDEO_DRIVER_DIRECTFB, 1, [ ])
+            AC_DEFINE(SDL_VIDEO_RENDER_DIRECTFB, 1, [ ])
             SOURCES="$SOURCES $srcdir/src/video/directfb/*.c"
             EXTRA_CFLAGS="$EXTRA_CFLAGS $DIRECTFB_CFLAGS"