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diff --git a/media/libaom/src/aom_scale/aom_scale.cmake b/media/libaom/src/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.
+#
+if(AOM_AOM_SCALE_AOM_SCALE_CMAKE_)
+ return()
+endif() # AOM_AOM_SCALE_AOM_SCALE_CMAKE_
+set(AOM_AOM_SCALE_AOM_SCALE_CMAKE_ 1)
+
+list(APPEND 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")
+
+list(APPEND 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 PRIVATE $<TARGET_OBJECTS:aom_scale>)
+
+ if(HAVE_DSPR2)
+ add_intrinsics_object_library("" "dspr2" "aom_scale"
+ "AOM_SCALE_INTRIN_DSPR2" "aom")
+ endif()
+
+ set(AOM_LIB_TARGETS ${AOM_LIB_TARGETS} aom_scale PARENT_SCOPE)
+endfunction()