We don't use DGA version 1 so remove the configure check for it.

configure

@@ -8107,82 +8107,6 @@ _ACEOF
 
                   X_PRE_LIBS="$X_PRE_LIBS -lXxf86dga"
 
-else
-                                       echo "$as_me:$LINENO: checking for XF86DGAQueryExtension in -lXxf86dga" >&5
-echo $ECHO_N "checking for XF86DGAQueryExtension in -lXxf86dga... $ECHO_C" >&6
-if test "${ac_cv_lib_Xxf86dga_XF86DGAQueryExtension+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lXxf86dga $X_LIBS -lXext -lX11 $X_EXTRA_LIBS
-                   $LIBS"
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char XF86DGAQueryExtension ();
-int
-main ()
-{
-XF86DGAQueryExtension ();
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_cv_lib_Xxf86dga_XF86DGAQueryExtension=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-ac_cv_lib_Xxf86dga_XF86DGAQueryExtension=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_Xxf86dga_XF86DGAQueryExtension" >&5
-echo "${ECHO_T}$ac_cv_lib_Xxf86dga_XF86DGAQueryExtension" >&6
-if test $ac_cv_lib_Xxf86dga_XF86DGAQueryExtension = yes; then
-
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_LIBXXF86DGA 1
-_ACEOF
-
-                      X_PRE_LIBS="$X_PRE_LIBS -lXxf86dga"
-
-fi
-
-
 fi
 
         fi

configure.ac

@@ -316,21 +316,10 @@ then
         if test "$ac_cv_header_X11_extensions_xf86dga_h" = "yes"
         then
               AC_CHECK_LIB(Xxf86dga, XDGAQueryExtension,
-                [ dnl *** If found...
-                  AC_DEFINE(HAVE_LIBXXF86DGA2, 1,
+                [ AC_DEFINE(HAVE_LIBXXF86DGA2, 1,
                             [Define if you have the Xxf86dga library version 2])
                   X_PRE_LIBS="$X_PRE_LIBS -lXxf86dga"
-               ],
-                [ dnl *** If not found, look for XF86DGAQueryExtension()
-                  dnl *** instead (DGA 2.0 not found)...
-                  AC_CHECK_LIB(Xxf86dga, XF86DGAQueryExtension,
-                    [ AC_DEFINE(HAVE_LIBXXF86DGA, 1,
-                                [Define if you have the Xxf86dga library version 1])
-                      X_PRE_LIBS="$X_PRE_LIBS -lXxf86dga"
-                    ],,
-                    $X_LIBS -lXext -lX11 $X_EXTRA_LIBS
-                  )
-                ],
+                ],,
                 $X_LIBS -lXext -lX11 $X_EXTRA_LIBS)
         fi
 

include/config.h.in

@@ -302,9 +302,6 @@
 /* Define if you have the X Shape extension */
 #undef HAVE_LIBXSHAPE
 
-/* Define if you have the Xxf86dga library version 1 */
-#undef HAVE_LIBXXF86DGA
-
 /* Define if you have the Xxf86dga library version 2 */
 #undef HAVE_LIBXXF86DGA2