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diff --git a/third_party/aom/aom_scale/aom_scale.cmake b/third_party/aom/aom_scale/aom_scale.cmake
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+##
+## Copyright (c) 2017, Alliance for Open Media. All rights reserved
+##
+## This source code is subject to the terms of the BSD 2 Clause License and
+## the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+## was not distributed with this source code in the LICENSE file, you can
+## obtain it at www.aomedia.org/license/software. If the Alliance for Open
+## Media Patent License 1.0 was not distributed with this source code in the
+## PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+##
+set(AOM_SCALE_SOURCES
+ "${AOM_ROOT}/aom_scale/aom_scale.h"
+ "${AOM_ROOT}/aom_scale/generic/aom_scale.c"
+ "${AOM_ROOT}/aom_scale/generic/gen_scalers.c"
+ "${AOM_ROOT}/aom_scale/generic/yv12config.c"
+ "${AOM_ROOT}/aom_scale/generic/yv12extend.c"
+ "${AOM_ROOT}/aom_scale/yv12config.h")
+
+set(AOM_SCALE_INTRIN_DSPR2
+ "${AOM_ROOT}/aom_scale/mips/dspr2/yv12extend_dspr2.c")
+
+# Creates the aom_scale build target and makes libaom depend on it. The libaom
+# target must exist before this function is called.
+function (setup_aom_scale_targets)
+ add_library(aom_scale OBJECT ${AOM_SCALE_SOURCES})
+ target_sources(aom PUBLIC $<TARGET_OBJECTS:aom_scale>)
+
+ if (HAVE_DSPR2)
+ add_intrinsics_object_library("" "dspr2" "aom_scale"
+ "AOM_SCALE_INTRIN_DSPR2")
+ endif ()
+
+ set(AOM_LIB_TARGETS ${AOM_LIB_TARGETS} aom_scale PARENT_SCOPE)
+endfunction ()