libvpx: Pull from upstream

source/libvpx/libs.mk

 ##
 ##  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 ##
 ##  Use of this source code is governed by a BSD-style license
 ##  that can be found in the LICENSE file in the root of the source
 ##  tree. An additional intellectual property rights grant can be found
 ##  in the file PATENTS.  All contributing project authors may
 ##  be found in the AUTHORS file in the root of the source tree.
 ##
 
@@ skipping 471 matching lines @@
 CLEAN-OBJS += libs.doxy
 DOCS-yes += libs.doxy
 libs.doxy: $(CODEC_DOC_SRCS)
         @echo "    [CREATE] $@"
         @rm -f $@
         @echo "INPUT += $^" >> $@
         @echo "INCLUDE_PATH += ." >> $@;
         @echo "ENABLED_SECTIONS += $(sort $(CODEC_DOC_SECTIONS))" >> $@
 
 ## Generate rtcd.h for all objects
+ifeq ($(CONFIG_DEPENDENCY_TRACKING),yes)
 $(OBJS-yes:.o=.d): $(RTCD)
+else
+$(OBJS-yes): $(RTCD)
+endif
 
 ## Update the global src list
 SRCS += $(CODEC_SRCS) $(LIBVPX_TEST_SRCS) $(GTEST_SRCS)
 
 ##
 ## vpxdec/vpxenc tests.
 ##
 ifeq ($(CONFIG_UNIT_TESTS),yes)
 TEST_BIN_PATH = .
 ifeq ($(CONFIG_MSVS),yes)
@@ skipping 31 matching lines @@
 EXAMPLES_BIN_PATH := $(TGT_OS:win64=x64)/Release
 endif
 exampletest: examples testdata
         $(qexec)$(SRC_PATH_BARE)/test/examples.sh \
                 --test-data-path $(LIBVPX_TEST_DATA_PATH) \
                 --bin-path $(EXAMPLES_BIN_PATH)
 else
 exampletest:
         @echo Unit tests must be enabled to make the exampletest target.
 endif