Update aom to v1.0.0

Update aom to commit id d14c5bb4f336ef1842046089849dee4a301fbbf0.

16 files changed, 61 insertions, 3836 deletions

diff --git a/third_party/aom/build/make/Android.mk b/third_party/aom/build/make/Android.mk
deleted file mode 100644
index e50faef92..000000000
--- a/third_party/aom/build/make/Android.mk
+++ /dev/null
@@ -1,194 +0,0 @@
-##
-## Copyright (c) 2016, 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.
-##
-
-
-#
-# This file is to be used for compiling libaom for Android using the NDK.
-# In an Android project place a libaom checkout in the jni directory.
-# Run the configure script from the jni directory.  Base libaom
-# encoder/decoder configuration will look similar to:
-# ./libaom/configure --target=armv7-android-gcc --disable-examples \
-#                    --sdk-path=/opt/android-ndk-r6b/
-#
-# When targeting Android, realtime-only is enabled by default.  This can
-# be overridden by adding the command line flag:
-#  --disable-realtime-only
-#
-# This will create .mk files that contain variables that contain the
-# source files to compile.
-#
-# Place an Android.mk file in the jni directory that references the
-# Android.mk file in the libaom directory:
-# LOCAL_PATH := $(call my-dir)
-# include $(CLEAR_VARS)
-# include jni/libaom/build/make/Android.mk
-#
-# There are currently two TARGET_ARCH_ABI targets for ARM.
-# armeabi and armeabi-v7a.  armeabi-v7a is selected by creating an
-# Application.mk in the jni directory that contains:
-# APP_ABI := armeabi-v7a
-#
-# By default libaom will detect at runtime the existance of NEON extension.
-# For this we import the 'cpufeatures' module from the NDK sources.
-# libaom can also be configured without this runtime detection method.
-# Configuring with --disable-runtime-cpu-detect will assume presence of NEON.
-# Configuring with --disable-runtime-cpu-detect --disable-neon \
-#     --disable-neon-asm
-# will remove any NEON dependency.
-#
-# Running ndk-build will build libaom and include it in your project.
-#
-
-CONFIG_DIR := $(LOCAL_PATH)/
-LIBAOM_PATH := $(LOCAL_PATH)/libaom
-ASM_CNV_PATH_LOCAL := $(TARGET_ARCH_ABI)/ads2gas
-ASM_CNV_PATH := $(LOCAL_PATH)/$(ASM_CNV_PATH_LOCAL)
-
-# Use the makefiles generated by upstream configure to determine which files to
-# build. Also set any architecture-specific flags.
-ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
-  include $(CONFIG_DIR)libs-armv7-android-gcc.mk
-  LOCAL_ARM_MODE := arm
-else ifeq  ($(TARGET_ARCH_ABI),arm64-v8a)
-  include $(CONFIG_DIR)libs-armv8-android-gcc.mk
-  LOCAL_ARM_MODE := arm
-else ifeq ($(TARGET_ARCH_ABI),x86)
-  include $(CONFIG_DIR)libs-x86-android-gcc.mk
-else ifeq ($(TARGET_ARCH_ABI),x86_64)
-  include $(CONFIG_DIR)libs-x86_64-android-gcc.mk
-else ifeq ($(TARGET_ARCH_ABI),mips)
-  include $(CONFIG_DIR)libs-mips-android-gcc.mk
-else
-  $(error Not a supported TARGET_ARCH_ABI: $(TARGET_ARCH_ABI))
-endif
-
-# Rule that is normally in Makefile created by libaom
-# configure.  Used to filter out source files based on configuration.
-enabled=$(filter-out $($(1)-no),$($(1)-yes))
-
-# Override the relative path that is defined by the libaom
-# configure process
-SRC_PATH_BARE := $(LIBAOM_PATH)
-
-# Include the list of files to be built
-include $(LIBAOM_PATH)/libs.mk
-
-# Optimise the code. May want to revisit this setting in the future.
-LOCAL_CFLAGS := -O3
-
-# For x86, include the source code in the search path so it will find files
-# like x86inc.asm and x86_abi_support.asm
-LOCAL_ASMFLAGS := -I$(LIBAOM_PATH)
-
-.PRECIOUS: %.asm.s
-$(ASM_CNV_PATH)/libaom/%.asm.s: $(LIBAOM_PATH)/%.asm
-	@mkdir -p $(dir $@)
-	@$(CONFIG_DIR)$(ASM_CONVERSION) <$< > $@
-
-# For building *_rtcd.h, which have rules in libs.mk
-TGT_ISA:=$(word 1, $(subst -, ,$(TOOLCHAIN)))
-target := libs
-
-LOCAL_SRC_FILES += aom_config.c
-
-# Remove duplicate entries
-CODEC_SRCS_UNIQUE = $(sort $(CODEC_SRCS))
-
-# Pull out C files.  aom_config.c is in the immediate directory and
-# so it does not need libaom/ prefixed like the rest of the source files.
-# The neon files with intrinsics need to have .neon appended so the proper
-# flags are applied.
-CODEC_SRCS_C = $(filter %.c, $(CODEC_SRCS_UNIQUE))
-LOCAL_NEON_SRCS_C = $(filter %_neon.c, $(CODEC_SRCS_C))
-LOCAL_CODEC_SRCS_C = $(filter-out aom_config.c %_neon.c, $(CODEC_SRCS_C))
-
-LOCAL_SRC_FILES += $(foreach file, $(LOCAL_CODEC_SRCS_C), libaom/$(file))
-ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
-  LOCAL_SRC_FILES += $(foreach file, $(LOCAL_NEON_SRCS_C), libaom/$(file).neon)
-else # If there are neon sources then we are building for arm64 and do not need to specify .neon
-  LOCAL_SRC_FILES += $(foreach file, $(LOCAL_NEON_SRCS_C), libaom/$(file))
-endif
-
-# Pull out assembly files, splitting NEON from the rest.  This is
-# done to specify that the NEON assembly files use NEON assembler flags.
-# x86 assembly matches %.asm, arm matches %.asm.s
-
-# x86:
-
-CODEC_SRCS_ASM_X86 = $(filter %.asm, $(CODEC_SRCS_UNIQUE))
-LOCAL_SRC_FILES += $(foreach file, $(CODEC_SRCS_ASM_X86), libaom/$(file))
-
-# arm:
-CODEC_SRCS_ASM_ARM_ALL = $(filter %.asm.s, $(CODEC_SRCS_UNIQUE))
-CODEC_SRCS_ASM_ARM = $(foreach v, \
-                     $(CODEC_SRCS_ASM_ARM_ALL), \
-                     $(if $(findstring neon,$(v)),,$(v)))
-CODEC_SRCS_ASM_ADS2GAS = $(patsubst %.s, \
-                         $(ASM_CNV_PATH_LOCAL)/libaom/%.s, \
-                         $(CODEC_SRCS_ASM_ARM))
-LOCAL_SRC_FILES += $(CODEC_SRCS_ASM_ADS2GAS)
-
-ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
-  CODEC_SRCS_ASM_NEON = $(foreach v, \
-                        $(CODEC_SRCS_ASM_ARM_ALL),\
-                        $(if $(findstring neon,$(v)),$(v),))
-  CODEC_SRCS_ASM_NEON_ADS2GAS = $(patsubst %.s, \
-                                $(ASM_CNV_PATH_LOCAL)/libaom/%.s, \
-                                $(CODEC_SRCS_ASM_NEON))
-  LOCAL_SRC_FILES += $(patsubst %.s, \
-                     %.s.neon, \
-                     $(CODEC_SRCS_ASM_NEON_ADS2GAS))
-endif
-
-LOCAL_CFLAGS += \
-    -DHAVE_CONFIG_H=aom_config.h \
-    -I$(LIBAOM_PATH) \
-    -I$(ASM_CNV_PATH)
-
-LOCAL_MODULE := libaom
-
-ifeq ($(CONFIG_RUNTIME_CPU_DETECT),yes)
-  LOCAL_STATIC_LIBRARIES := cpufeatures
-endif
-
-# Add a dependency to force generation of the RTCD files.
-define rtcd_dep_template
-rtcd_dep_template_SRCS := $(addprefix $(LOCAL_PATH)/, $(LOCAL_SRC_FILES))
-rtcd_dep_template_SRCS := $$(rtcd_dep_template_SRCS:.neon=)
-ifeq ($(CONFIG_AV1), yes)
-$$(rtcd_dep_template_SRCS): av1_rtcd.h
-endif
-$$(rtcd_dep_template_SRCS): aom_scale_rtcd.h
-$$(rtcd_dep_template_SRCS): aom_dsp_rtcd.h
-
-ifneq ($(findstring $(TARGET_ARCH_ABI),x86 x86_64),)
-$$(rtcd_dep_template_SRCS): aom_config.asm
-endif
-endef
-
-$(eval $(call rtcd_dep_template))
-
-.PHONY: clean
-clean:
-	@echo "Clean: ads2gas files [$(TARGET_ARCH_ABI)]"
-	@$(RM) $(CODEC_SRCS_ASM_ADS2GAS) $(CODEC_SRCS_ASM_NEON_ADS2GAS)
-	@$(RM) -r $(ASM_CNV_PATH)
-	@$(RM) $(CLEAN-OBJS)
-
-ifeq ($(ENABLE_SHARED),1)
-  include $(BUILD_SHARED_LIBRARY)
-else
-  include $(BUILD_STATIC_LIBRARY)
-endif
-
-ifeq ($(CONFIG_RUNTIME_CPU_DETECT),yes)
-$(call import-module,cpufeatures)
-endif
diff --git a/third_party/aom/build/make/Makefile b/third_party/aom/build/make/Makefile
deleted file mode 100644
index 0b869db0a..000000000
--- a/third_party/aom/build/make/Makefile
+++ /dev/null
@@ -1,466 +0,0 @@
-## Copyright (c) 2016, Alliance for Open Media. All rights reserved
-##
-## This source code is subject to the terms of the BSD 2 Clause License and
-## the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
-## was not distributed with this source code in the LICENSE file, you can
-## obtain it at www.aomedia.org/license/software. If the Alliance for Open
-## Media Patent License 1.0 was not distributed with this source code in the
-## PATENTS file, you can obtain it at www.aomedia.org/license/patent.
-##
-
-
-include config.mk
-quiet?=true
-ifeq ($(target),)
-# If a target wasn't specified, invoke for all enabled targets.
-.DEFAULT:
-	@for t in $(ALL_TARGETS); do \
-	     $(MAKE) --no-print-directory target=$$t $(MAKECMDGOALS) || exit $$?;\
-        done
-all: .DEFAULT
-clean:: .DEFAULT
-exampletest: .DEFAULT
-install:: .DEFAULT
-test:: .DEFAULT
-test-no-data-check:: .DEFAULT
-testdata:: .DEFAULT
-utiltest: .DEFAULT
-exampletest-no-data-check utiltest-no-data-check: .DEFAULT
-test_%: .DEFAULT ;
-
-# Note: md5sum is not installed on OS X, but openssl is. Openssl may not be
-# installed on cygwin, so we need to autodetect here.
-md5sum := $(firstword $(wildcard \
-          $(foreach e,md5sum openssl,\
-          $(foreach p,$(subst :, ,$(PATH)),$(p)/$(e)*))\
-          ))
-md5sum := $(if $(filter %openssl,$(md5sum)),$(md5sum) dgst -md5,$(md5sum))
-
-TGT_CC:=$(word 3, $(subst -, ,$(TOOLCHAIN)))
-dist:
-	@for t in $(ALL_TARGETS); do \
-	     $(MAKE) --no-print-directory target=$$t $(MAKECMDGOALS) || exit $$?;\
-        done
-        # Run configure for the user with the current toolchain.
-	@if [ -d "$(DIST_DIR)/src" ]; then \
-            mkdir -p "$(DIST_DIR)/build"; \
-            cd "$(DIST_DIR)/build"; \
-            echo "Rerunning configure $(CONFIGURE_ARGS)"; \
-            ../src/configure $(CONFIGURE_ARGS); \
-            $(if $(filter vs%,$(TGT_CC)),make NO_LAUNCH_DEVENV=1;) \
-        fi
-	@if [ -d "$(DIST_DIR)" ]; then \
-            echo "    [MD5SUM] $(DIST_DIR)"; \
-	    cd $(DIST_DIR) && \
-	    $(md5sum) `find . -name md5sums.txt -prune -o -type f -print` \
-                | sed -e 's/MD5(\(.*\))= \([0-9a-f]\{32\}\)/\2  \1/' \
-                > md5sums.txt;\
-        fi
-endif
-
-# Since we invoke make recursively for multiple targets we need to include the
-# .mk file for the correct target, but only when $(target) is non-empty.
-ifneq ($(target),)
-include $(target)-$(TOOLCHAIN).mk
-endif
-BUILD_ROOT?=.
-VPATH=$(SRC_PATH_BARE)
-CFLAGS+=-I$(BUILD_PFX)$(BUILD_ROOT) -I$(SRC_PATH)
-CXXFLAGS+=-I$(BUILD_PFX)$(BUILD_ROOT) -I$(SRC_PATH)
-ASFLAGS+=-I$(BUILD_PFX)$(BUILD_ROOT)/ -I$(SRC_PATH)/
-DIST_DIR?=dist
-HOSTCC?=gcc
-TGT_ISA:=$(word 1, $(subst -, ,$(TOOLCHAIN)))
-TGT_OS:=$(word 2, $(subst -, ,$(TOOLCHAIN)))
-TGT_CC:=$(word 3, $(subst -, ,$(TOOLCHAIN)))
-quiet:=$(if $(or $(verbose), $(V)),, yes)
-qexec=$(if $(quiet),@)
-
-# Cancel built-in implicit rules
-%: %.o
-%.asm:
-%.a:
-%: %.cc
-
-#
-# Common rules"
-#
-.PHONY: all
-all:
-
-.PHONY: clean
-clean::
-	rm -f $(OBJS-yes) $(OBJS-yes:.o=.d) $(OBJS-yes:.asm.s.o=.asm.s)
-	rm -f $(CLEAN-OBJS)
-
-.PHONY: clean
-distclean: clean
-	if [ -z "$(target)" ]; then \
-      rm -f Makefile; \
-      rm -f config.log config.mk; \
-      rm -f aom_config.[hc] aom_config.asm; \
-    else \
-      rm -f $(target)-$(TOOLCHAIN).mk; \
-    fi
-
-.PHONY: dist
-dist:
-.PHONY: exampletest
-exampletest:
-.PHONY: install
-install::
-.PHONY: test
-test::
-.PHONY: testdata
-testdata::
-.PHONY: utiltest
-utiltest:
-.PHONY: test-no-data-check exampletest-no-data-check utiltest-no-data-check
-test-no-data-check::
-exampletest-no-data-check utiltest-no-data-check:
-
-# Force to realign stack always on OS/2
-ifeq ($(TOOLCHAIN), x86-os2-gcc)
-CFLAGS += -mstackrealign
-endif
-
-$(BUILD_PFX)%_mmx.c.d: CFLAGS += -mmmx
-$(BUILD_PFX)%_mmx.c.o: CFLAGS += -mmmx
-$(BUILD_PFX)%_sse2.c.d: CFLAGS += -msse2
-$(BUILD_PFX)%_sse2.c.o: CFLAGS += -msse2
-$(BUILD_PFX)%_sse3.c.d: CFLAGS += -msse3
-$(BUILD_PFX)%_sse3.c.o: CFLAGS += -msse3
-$(BUILD_PFX)%_ssse3.c.d: CFLAGS += -mssse3
-$(BUILD_PFX)%_ssse3.c.o: CFLAGS += -mssse3
-$(BUILD_PFX)%_sse4.c.d: CFLAGS += -msse4.1
-$(BUILD_PFX)%_sse4.c.o: CFLAGS += -msse4.1
-$(BUILD_PFX)%_avx.c.d: CFLAGS += -mavx
-$(BUILD_PFX)%_avx.c.o: CFLAGS += -mavx
-$(BUILD_PFX)%_avx2.c.d: CFLAGS += -mavx2
-$(BUILD_PFX)%_avx2.c.o: CFLAGS += -mavx2
-$(BUILD_PFX)%_mmx.cc.d: CXXFLAGS += -mmmx
-$(BUILD_PFX)%_mmx.cc.o: CXXFLAGS += -mmmx
-$(BUILD_PFX)%_sse2.cc.d: CXXFLAGS += -msse2
-$(BUILD_PFX)%_sse2.cc.o: CXXFLAGS += -msse2
-$(BUILD_PFX)%_sse3.cc.d: CXXFLAGS += -msse3
-$(BUILD_PFX)%_sse3.cc.o: CXXFLAGS += -msse3
-$(BUILD_PFX)%_ssse3.cc.d: CXXFLAGS += -mssse3
-$(BUILD_PFX)%_ssse3.cc.o: CXXFLAGS += -mssse3
-$(BUILD_PFX)%_sse4.cc.d: CXXFLAGS += -msse4.1
-$(BUILD_PFX)%_sse4.cc.o: CXXFLAGS += -msse4.1
-$(BUILD_PFX)%_avx.cc.d: CXXFLAGS += -mavx
-$(BUILD_PFX)%_avx.cc.o: CXXFLAGS += -mavx
-$(BUILD_PFX)%_avx2.cc.d: CXXFLAGS += -mavx2
-$(BUILD_PFX)%_avx2.cc.o: CXXFLAGS += -mavx2
-
-$(BUILD_PFX)%.c.d: %.c
-	$(if $(quiet),@echo "    [DEP] $@")
-	$(qexec)mkdir -p $(dir $@)
-	$(qexec)$(CC) $(INTERNAL_CFLAGS) $(CFLAGS) -M $< | $(fmt_deps) > $@
-
-$(BUILD_PFX)%.c.o: %.c
-	$(if $(quiet),@echo "    [CC] $@")
-	$(qexec)$(if $(CONFIG_DEPENDENCY_TRACKING),,mkdir -p $(dir $@))
-	$(qexec)$(CC) $(INTERNAL_CFLAGS) $(CFLAGS) -c -o $@ $<
-
-$(BUILD_PFX)%.cc.d: %.cc
-	$(if $(quiet),@echo "    [DEP] $@")
-	$(qexec)mkdir -p $(dir $@)
-	$(qexec)$(CXX) $(INTERNAL_CFLAGS) $(CXXFLAGS) -M $< | $(fmt_deps) > $@
-
-$(BUILD_PFX)%.cc.o: %.cc
-	$(if $(quiet),@echo "    [CXX] $@")
-	$(qexec)$(if $(CONFIG_DEPENDENCY_TRACKING),,mkdir -p $(dir $@))
-	$(qexec)$(CXX) $(INTERNAL_CFLAGS) $(CXXFLAGS) -c -o $@ $<
-
-$(BUILD_PFX)%.cpp.d: %.cpp
-	$(if $(quiet),@echo "    [DEP] $@")
-	$(qexec)mkdir -p $(dir $@)
-	$(qexec)$(CXX) $(INTERNAL_CFLAGS) $(CXXFLAGS) -M $< | $(fmt_deps) > $@
-
-$(BUILD_PFX)%.cpp.o: %.cpp
-	$(if $(quiet),@echo "    [CXX] $@")
-	$(qexec)$(if $(CONFIG_DEPENDENCY_TRACKING),,mkdir -p $(dir $@))
-	$(qexec)$(CXX) $(INTERNAL_CFLAGS) $(CXXFLAGS) -c -o $@ $<
-
-$(BUILD_PFX)%.asm.d: %.asm
-	$(if $(quiet),@echo "    [DEP] $@")
-	$(qexec)mkdir -p $(dir $@)
-	$(qexec)$(SRC_PATH_BARE)/build/make/gen_asm_deps.sh \
-            --build-pfx=$(BUILD_PFX) --depfile=$@ $(ASFLAGS) $< > $@
-
-$(BUILD_PFX)%.asm.o: %.asm
-	$(if $(quiet),@echo "    [AS] $@")
-	$(qexec)$(if $(CONFIG_DEPENDENCY_TRACKING),,mkdir -p $(dir $@))
-	$(qexec)$(AS) $(ASFLAGS) -o $@ $<
-
-$(BUILD_PFX)%.s.d: %.s
-	$(if $(quiet),@echo "    [DEP] $@")
-	$(qexec)mkdir -p $(dir $@)
-	$(qexec)$(SRC_PATH_BARE)/build/make/gen_asm_deps.sh \
-            --build-pfx=$(BUILD_PFX) --depfile=$@ $(ASFLAGS) $< > $@
-
-$(BUILD_PFX)%.s.o: %.s
-	$(if $(quiet),@echo "    [AS] $@")
-	$(qexec)$(if $(CONFIG_DEPENDENCY_TRACKING),,mkdir -p $(dir $@))
-	$(qexec)$(AS) $(ASFLAGS) -o $@ $<
-
-.PRECIOUS: %.c.S
-%.c.S: CFLAGS += -DINLINE_ASM
-$(BUILD_PFX)%.c.S: %.c
-	$(if $(quiet),@echo "    [GEN] $@")
-	$(qexec)$(if $(CONFIG_DEPENDENCY_TRACKING),,mkdir -p $(dir $@))
-	$(qexec)$(CC) -S $(CFLAGS) -o $@ $<
-
-.PRECIOUS: %.asm.s
-$(BUILD_PFX)%.asm.s: %.asm
-	$(if $(quiet),@echo "    [ASM CONVERSION] $@")
-	$(qexec)mkdir -p $(dir $@)
-	$(qexec)$(ASM_CONVERSION) <$< >$@
-
-# If we're in debug mode, pretend we don't have GNU strip, to fall back to
-# the copy implementation
-HAVE_GNU_STRIP := $(if $(CONFIG_DEBUG),,$(HAVE_GNU_STRIP))
-ifeq ($(HAVE_GNU_STRIP),yes)
-# Older binutils strip global symbols not needed for relocation processing
-# when given --strip-unneeded. Using nm and awk to identify globals and
-# keep them caused command line length issues under mingw and segfaults in
-# test_libaom were observed under OS/2: simply use --strip-debug.
-%.a: %_g.a
-	$(if $(quiet),@echo "    [STRIP] $@ < $<")
-	$(qexec)$(STRIP) --strip-debug \
-          -o $@ $<
-else
-%.a: %_g.a
-	$(if $(quiet),@echo "    [CP] $@ < $<")
-	$(qexec)cp $< $@
-endif
-
-#
-# Utility functions
-#
-pairmap=$(if $(strip $(2)),\
-    $(call $(1),$(word 1,$(2)),$(word 2,$(2)))\
-    $(call pairmap,$(1),$(wordlist 3,$(words $(2)),$(2)))\
-)
-
-enabled=$(filter-out $($(1)-no),$($(1)-yes))
-cond_enabled=$(if $(filter yes,$($(1))), $(call enabled,$(2)))
-
-find_file1=$(word 1,$(wildcard $(subst //,/,$(addsuffix /$(1),$(2)))))
-find_file=$(foreach f,$(1),$(call find_file1,$(strip $(f)),$(strip $(2))) )
-obj_pats=.c=.c.o $(AS_SFX)=$(AS_SFX).o .cc=.cc.o .cpp=.cpp.o
-objs=$(addprefix $(BUILD_PFX),$(foreach p,$(obj_pats),$(filter %.o,$(1:$(p))) ))
-
-install_map_templates=$(eval $(call install_map_template,$(1),$(2)))
-
-not=$(subst yes,no,$(1))
-
-ifeq ($(CONFIG_MSVS),yes)
-lib_file_name=$(1).lib
-else
-lib_file_name=lib$(1).a
-endif
-#
-# Rule Templates
-#
-define linker_template
-$(1): $(filter-out -%,$(2))
-$(1):
-	$(if $(quiet),@echo    "    [LD] $$@")
-	$(qexec)$$(LD) $$(strip $$(INTERNAL_LDFLAGS) $$(LDFLAGS) -o $$@ $(2) $(3) $$(extralibs))
-endef
-define linkerxx_template
-$(1): $(filter-out -%,$(2))
-$(1):
-	$(if $(quiet),@echo    "    [LD] $$@")
-	$(qexec)$$(CXX) $$(strip $$(INTERNAL_LDFLAGS) $$(LDFLAGS) -o $$@ $(2) $(3) $$(extralibs))
-endef
-# make-3.80 has a bug with expanding large input strings to the eval function,
-# which was triggered in some cases by the following component of
-# linker_template:
-#   $(1): $$(call find_file, $(patsubst -l%,lib%.a,$(filter -l%,$(2))),\
-#                           $$(patsubst -L%,%,$$(filter -L%,$$(LDFLAGS) $(2))))
-# This may be useful to revisit in the future (it tries to locate libraries
-# in a search path and add them as prerequisites
-
-define install_map_template
-$(DIST_DIR)/$(1): $(2)
-	$(if $(quiet),@echo "    [INSTALL] $$@")
-	$(qexec)mkdir -p $$(dir $$@)
-	$(qexec)cp -p $$< $$@
-endef
-
-define archive_template
-# Not using a pattern rule here because we don't want to generate empty
-# archives when they are listed as a dependency in files not responsible
-# for creating them.
-$(1):
-	$(if $(quiet),@echo "    [AR] $$@")
-	$(qexec)$$(AR) $$(ARFLAGS) $$@ $$^
-endef
-
-define so_template
-# Not using a pattern rule here because we don't want to generate empty
-# archives when they are listed as a dependency in files not responsible
-# for creating them.
-#
-# This needs further abstraction for dealing with non-GNU linkers.
-$(1):
-	$(if $(quiet),@echo "    [LD] $$@")
-	$(qexec)$$(LD) -shared $$(LDFLAGS) \
-            -Wl,--no-undefined -Wl,-soname,$$(SONAME) \
-            -Wl,--version-script,$$(EXPORTS_FILE) -o $$@ \
-            $$(filter %.o,$$^) $$(extralibs)
-endef
-
-define dl_template
-# Not using a pattern rule here because we don't want to generate empty
-# archives when they are listed as a dependency in files not responsible
-# for creating them.
-$(1):
-	$(if $(quiet),@echo "    [LD] $$@")
-	$(qexec)$$(LD) -dynamiclib $$(LDFLAGS) \
-	    -exported_symbols_list $$(EXPORTS_FILE) \
-        -Wl,-headerpad_max_install_names,-compatibility_version,1.0,-current_version,$$(VERSION_MAJOR) \
-        -o $$@ \
-        $$(filter %.o,$$^) $$(extralibs)
-endef
-
-define dll_template
-# Not using a pattern rule here because we don't want to generate empty
-# archives when they are listed as a dependency in files not responsible
-# for creating them.
-$(1):
-	$(if $(quiet),@echo "    [LD] $$@")
-	$(qexec)$$(LD) -Zdll $$(LDFLAGS) \
-        -o $$@ \
-        $$(filter %.o,$$^) $$(extralibs) $$(EXPORTS_FILE)
-endef
-
-
-#
-# Get current configuration
-#
-ifneq ($(target),)
-include $(SRC_PATH_BARE)/$(target:-$(TOOLCHAIN)=).mk
-endif
-
-skip_deps := $(filter %clean,$(MAKECMDGOALS))
-skip_deps += $(findstring testdata,$(MAKECMDGOALS))
-ifeq ($(strip $(skip_deps)),)
-  ifeq ($(CONFIG_DEPENDENCY_TRACKING),yes)
-    # Older versions of make don't like -include directives with no arguments
-    ifneq ($(filter %.d,$(OBJS-yes:.o=.d)),)
-      -include $(filter %.d,$(OBJS-yes:.o=.d))
-    endif
-  endif
-endif
-
-#
-# Configuration dependent rules
-#
-$(call pairmap,install_map_templates,$(INSTALL_MAPS))
-
-DOCS=$(call cond_enabled,CONFIG_INSTALL_DOCS,DOCS)
-.docs: $(DOCS)
-	@touch $@
-
-INSTALL-DOCS=$(call cond_enabled,CONFIG_INSTALL_DOCS,INSTALL-DOCS)
-ifeq ($(MAKECMDGOALS),dist)
-INSTALL-DOCS+=$(call cond_enabled,CONFIG_INSTALL_DOCS,DIST-DOCS)
-endif
-.install-docs: .docs $(addprefix $(DIST_DIR)/,$(INSTALL-DOCS))
-	@touch $@
-
-clean::
-	rm -f .docs .install-docs $(DOCS)
-
-BINS=$(call enabled,BINS)
-.bins: $(BINS)
-	@touch $@
-
-INSTALL-BINS=$(call cond_enabled,CONFIG_INSTALL_BINS,INSTALL-BINS)
-ifeq ($(MAKECMDGOALS),dist)
-INSTALL-BINS+=$(call cond_enabled,CONFIG_INSTALL_BINS,DIST-BINS)
-endif
-.install-bins: .bins $(addprefix $(DIST_DIR)/,$(INSTALL-BINS))
-	@touch $@
-
-clean::
-	rm -f .bins .install-bins $(BINS)
-
-LIBS=$(call enabled,LIBS)
-.libs: $(LIBS)
-	@touch $@
-$(foreach lib,$(filter %_g.a,$(LIBS)),$(eval $(call archive_template,$(lib))))
-$(foreach lib,$(filter %so.$(SO_VERSION_MAJOR).$(SO_VERSION_MINOR).$(SO_VERSION_PATCH),$(LIBS)),$(eval $(call so_template,$(lib))))
-$(foreach lib,$(filter %$(SO_VERSION_MAJOR).dylib,$(LIBS)),$(eval $(call dl_template,$(lib))))
-$(foreach lib,$(filter %$(SO_VERSION_MAJOR).dll,$(LIBS)),$(eval $(call dll_template,$(lib))))
-
-INSTALL-LIBS=$(call cond_enabled,CONFIG_INSTALL_LIBS,INSTALL-LIBS)
-ifeq ($(MAKECMDGOALS),dist)
-INSTALL-LIBS+=$(call cond_enabled,CONFIG_INSTALL_LIBS,DIST-LIBS)
-endif
-.install-libs: .libs $(addprefix $(DIST_DIR)/,$(INSTALL-LIBS))
-	@touch $@
-
-clean::
-	rm -f .libs .install-libs $(LIBS)
-
-ifeq ($(CONFIG_EXTERNAL_BUILD),yes)
-PROJECTS=$(call enabled,PROJECTS)
-.projects: $(PROJECTS)
-	@touch $@
-
-INSTALL-PROJECTS=$(call cond_enabled,CONFIG_INSTALL_PROJECTS,INSTALL-PROJECTS)
-ifeq ($(MAKECMDGOALS),dist)
-INSTALL-PROJECTS+=$(call cond_enabled,CONFIG_INSTALL_PROJECTS,DIST-PROJECTS)
-endif
-.install-projects: .projects $(addprefix $(DIST_DIR)/,$(INSTALL-PROJECTS))
-	@touch $@
-
-clean::
-	rm -f .projects .install-projects $(PROJECTS)
-endif
-
-# If there are any source files to be distributed, then include the build
-# system too.
-ifneq ($(call enabled,DIST-SRCS),)
-    DIST-SRCS-yes            += configure
-    DIST-SRCS-yes            += build/make/configure.sh
-    DIST-SRCS-yes            += build/make/gen_asm_deps.sh
-    DIST-SRCS-yes            += build/make/Makefile
-    DIST-SRCS-$(CONFIG_MSVS)  += build/make/gen_msvs_def.sh
-    DIST-SRCS-$(CONFIG_MSVS)  += build/make/gen_msvs_sln.sh
-    DIST-SRCS-$(CONFIG_MSVS)  += build/make/gen_msvs_vcxproj.sh
-    DIST-SRCS-$(CONFIG_MSVS)  += build/make/msvs_common.sh
-    DIST-SRCS-$(CONFIG_RVCT) += build/make/armlink_adapter.sh
-    DIST-SRCS-$(ARCH_ARM)    += build/make/ads2gas.pl
-    DIST-SRCS-$(ARCH_ARM)    += build/make/ads2gas_apple.pl
-    DIST-SRCS-$(ARCH_ARM)    += build/make/ads2armasm_ms.pl
-    DIST-SRCS-$(ARCH_ARM)    += build/make/thumb.pm
-    DIST-SRCS-yes            += $(target:-$(TOOLCHAIN)=).mk
-endif
-INSTALL-SRCS := $(call cond_enabled,CONFIG_INSTALL_SRCS,INSTALL-SRCS)
-ifeq ($(MAKECMDGOALS),dist)
-INSTALL-SRCS += $(call cond_enabled,CONFIG_INSTALL_SRCS,DIST-SRCS)
-endif
-.install-srcs: $(addprefix $(DIST_DIR)/src/,$(INSTALL-SRCS))
-	@touch $@
-
-clean::
-	rm -f .install-srcs
-
-ifeq ($(CONFIG_EXTERNAL_BUILD),yes)
-    BUILD_TARGETS += .projects
-    INSTALL_TARGETS += .install-projects
-endif
-BUILD_TARGETS += .docs .libs .bins
-INSTALL_TARGETS += .install-docs .install-srcs .install-libs .install-bins
-all: $(BUILD_TARGETS)
-install:: $(INSTALL_TARGETS)
-dist: $(INSTALL_TARGETS)
-test::
-
-.SUFFIXES:  # Delete default suffix rules
diff --git a/third_party/aom/build/make/ads2armasm_ms.pl b/third_party/aom/build/make/ads2armasm_ms.pl
deleted file mode 100755
index 8568a2dad..000000000
--- a/third_party/aom/build/make/ads2armasm_ms.pl
+++ /dev/null
@@ -1,39 +0,0 @@
-#!/usr/bin/env perl
-## Copyright (c) 2016, 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.
-##
-
-use FindBin;
-use lib $FindBin::Bin;
-use thumb;
-
-print "; This file was created from a .asm file\n";
-print ";  using the ads2armasm_ms.pl script.\n";
-
-while (<STDIN>)
-{
-    undef $comment;
-    undef $line;
-
-    s/REQUIRE8//;
-    s/PRESERVE8//;
-    s/^\s*ARM\s*$//;
-    s/AREA\s+\|\|(.*)\|\|/AREA |$1|/;
-    s/qsubaddx/qsax/i;
-    s/qaddsubx/qasx/i;
-
-    thumb::FixThumbInstructions($_, 1);
-
-    s/ldrneb/ldrbne/i;
-    s/ldrneh/ldrhne/i;
-    s/^(\s*)ENDP.*/$&\n$1ALIGN 4/;
-
-    print;
-}
-
diff --git a/third_party/aom/build/make/ads2gas.pl b/third_party/aom/build/make/ads2gas.pl
deleted file mode 100755
index adf45a3c9..000000000
--- a/third_party/aom/build/make/ads2gas.pl
+++ /dev/null
@@ -1,236 +0,0 @@
-#!/usr/bin/env perl
-## Copyright (c) 2016, 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.
-##
-
-
-# ads2gas.pl
-# Author: Eric Fung (efung (at) acm.org)
-#
-# Convert ARM Developer Suite 1.0.1 syntax assembly source to GNU as format
-#
-# Usage: cat inputfile | perl ads2gas.pl > outputfile
-#
-
-use FindBin;
-use lib $FindBin::Bin;
-use thumb;
-
-my $thumb = 0;
-
-foreach my $arg (@ARGV) {
-    $thumb = 1 if ($arg eq "-thumb");
-}
-
-print "@ This file was created from a .asm file\n";
-print "@  using the ads2gas.pl script.\n";
-print "\t.equ DO1STROUNDING, 0\n";
-if ($thumb) {
-    print "\t.syntax unified\n";
-    print "\t.thumb\n";
-}
-
-# Stack of procedure names.
-@proc_stack = ();
-
-while (<STDIN>)
-{
-    undef $comment;
-    undef $line;
-    $comment_char = ";";
-    $comment_sub = "@";
-
-    # Handle comments.
-    if (/$comment_char/)
-    {
-      $comment = "";
-      ($line, $comment) = /(.*?)$comment_char(.*)/;
-      $_ = $line;
-    }
-
-    # Load and store alignment
-    s/@/,:/g;
-
-    # Hexadecimal constants prefaced by 0x
-    s/#&/#0x/g;
-
-    # Convert :OR: to |
-    s/:OR:/ | /g;
-
-    # Convert :AND: to &
-    s/:AND:/ & /g;
-
-    # Convert :NOT: to ~
-    s/:NOT:/ ~ /g;
-
-    # Convert :SHL: to <<
-    s/:SHL:/ << /g;
-
-    # Convert :SHR: to >>
-    s/:SHR:/ >> /g;
-
-    # Convert ELSE to .else
-    s/\bELSE\b/.else/g;
-
-    # Convert ENDIF to .endif
-    s/\bENDIF\b/.endif/g;
-
-    # Convert ELSEIF to .elseif
-    s/\bELSEIF\b/.elseif/g;
-
-    # Convert LTORG to .ltorg
-    s/\bLTORG\b/.ltorg/g;
-
-    # Convert endfunc to nothing.
-    s/\bendfunc\b//ig;
-
-    # Convert FUNCTION to nothing.
-    s/\bFUNCTION\b//g;
-    s/\bfunction\b//g;
-
-    s/\bENTRY\b//g;
-    s/\bMSARMASM\b/0/g;
-    s/^\s+end\s+$//g;
-
-    # Convert IF :DEF:to .if
-    # gcc doesn't have the ability to do a conditional
-    # if defined variable that is set by IF :DEF: on
-    # armasm, so convert it to a normal .if and then
-    # make sure to define a value elesewhere
-    if (s/\bIF :DEF:\b/.if /g)
-    {
-        s/=/==/g;
-    }
-
-    # Convert IF to .if
-    if (s/\bIF\b/.if/g)
-    {
-        s/=+/==/g;
-    }
-
-    # Convert INCLUDE to .INCLUDE "file"
-    s/INCLUDE(\s*)(.*)$/.include $1\"$2\"/;
-
-    # Code directive (ARM vs Thumb)
-    s/CODE([0-9][0-9])/.code $1/;
-
-    # No AREA required
-    # But ALIGNs in AREA must be obeyed
-    s/^\s*AREA.*ALIGN=([0-9])$/.text\n.p2align $1/;
-    # If no ALIGN, strip the AREA and align to 4 bytes
-    s/^\s*AREA.*$/.text\n.p2align 2/;
-
-    # DCD to .word
-    # This one is for incoming symbols
-    s/DCD\s+\|(\w*)\|/.long $1/;
-
-    # DCW to .short
-    s/DCW\s+\|(\w*)\|/.short $1/;
-    s/DCW(.*)/.short $1/;
-
-    # Constants defined in scope
-    s/DCD(.*)/.long $1/;
-    s/DCB(.*)/.byte $1/;
-
-    # RN to .req
-    if (s/RN\s+([Rr]\d+|lr)/.req $1/)
-    {
-        print;
-        print "$comment_sub$comment\n" if defined $comment;
-        next;
-    }
-
-    # Make function visible to linker, and make additional symbol with
-    # prepended underscore
-    s/EXPORT\s+\|([\$\w]*)\|/.global $1 \n\t.type $1, function/;
-    s/IMPORT\s+\|([\$\w]*)\|/.global $1/;
-
-    s/EXPORT\s+([\$\w]*)/.global $1/;
-    s/export\s+([\$\w]*)/.global $1/;
-
-    # No vertical bars required; make additional symbol with prepended
-    # underscore
-    s/^\|(\$?\w+)\|/_$1\n\t$1:/g;
-
-    # Labels need trailing colon
-#   s/^(\w+)/$1:/ if !/EQU/;
-    # put the colon at the end of the line in the macro
-    s/^([a-zA-Z_0-9\$]+)/$1:/ if !/EQU/;
-
-    # ALIGN directive
-    s/\bALIGN\b/.balign/g;
-
-    if ($thumb) {
-        # ARM code - we force everything to thumb with the declaration in the header
-        s/\sARM//g;
-    } else {
-        # ARM code
-        s/\sARM/.arm/g;
-    }
-
-    # push/pop
-    s/(push\s+)(r\d+)/stmdb sp\!, \{$2\}/g;
-    s/(pop\s+)(r\d+)/ldmia sp\!, \{$2\}/g;
-
-    # NEON code
-    s/(vld1.\d+\s+)(q\d+)/$1\{$2\}/g;
-    s/(vtbl.\d+\s+[^,]+),([^,]+)/$1,\{$2\}/g;
-
-    if ($thumb) {
-        thumb::FixThumbInstructions($_, 0);
-    }
-
-    # eabi_attributes numerical equivalents can be found in the
-    # "ARM IHI 0045C" document.
-
-    # REQUIRE8 Stack is required to be 8-byte aligned
-    s/\sREQUIRE8/.eabi_attribute 24, 1 \@Tag_ABI_align_needed/g;
-
-    # PRESERVE8 Stack 8-byte align is preserved
-    s/\sPRESERVE8/.eabi_attribute 25, 1 \@Tag_ABI_align_preserved/g;
-
-    # Use PROC and ENDP to give the symbols a .size directive.
-    # This makes them show up properly in debugging tools like gdb and valgrind.
-    if (/\bPROC\b/)
-    {
-        my $proc;
-        /^_([\.0-9A-Z_a-z]\w+)\b/;
-        $proc = $1;
-        push(@proc_stack, $proc) if ($proc);
-        s/\bPROC\b/@ $&/;
-    }
-    if (/\bENDP\b/)
-    {
-        my $proc;
-        s/\bENDP\b/@ $&/;
-        $proc = pop(@proc_stack);
-        $_ = "\t.size $proc, .-$proc".$_ if ($proc);
-    }
-
-    # EQU directive
-    s/(\S+\s+)EQU(\s+\S+)/.equ $1, $2/;
-
-    # Begin macro definition
-    if (/\bMACRO\b/) {
-        $_ = <STDIN>;
-        s/^/.macro/;
-        s/\$//g;                # remove formal param reference
-        s/;/@/g;                # change comment characters
-    }
-
-    # For macros, use \ to reference formal params
-    s/\$/\\/g;                  # End macro definition
-    s/\bMEND\b/.endm/;              # No need to tell it where to stop assembling
-    next if /^\s*END\s*$/;
-    print;
-    print "$comment_sub$comment\n" if defined $comment;
-}
-
-# Mark that this object doesn't need an executable stack.
-printf ("\t.section\t.note.GNU-stack,\"\",\%\%progbits\n");
diff --git a/third_party/aom/build/make/ads2gas_apple.pl b/third_party/aom/build/make/ads2gas_apple.pl
deleted file mode 100755
index 31ec91d56..000000000
--- a/third_party/aom/build/make/ads2gas_apple.pl
+++ /dev/null
@@ -1,235 +0,0 @@
-#!/usr/bin/env perl
-## Copyright (c) 2016, 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.
-##
-
-
-# ads2gas_apple.pl
-# Author: Eric Fung (efung (at) acm.org)
-#
-# Convert ARM Developer Suite 1.0.1 syntax assembly source to GNU as format
-#
-# Usage: cat inputfile | perl ads2gas_apple.pl > outputfile
-#
-
-my $chromium = 0;
-
-foreach my $arg (@ARGV) {
-    $chromium = 1 if ($arg eq "-chromium");
-}
-
-print "@ This file was created from a .asm file\n";
-print "@  using the ads2gas_apple.pl script.\n\n";
-print "\t.set WIDE_REFERENCE, 0\n";
-print "\t.set ARCHITECTURE, 5\n";
-print "\t.set DO1STROUNDING, 0\n";
-
-my %register_aliases;
-my %macro_aliases;
-
-my @mapping_list = ("\$0", "\$1", "\$2", "\$3", "\$4", "\$5", "\$6", "\$7", "\$8", "\$9");
-
-my @incoming_array;
-
-my @imported_functions;
-
-# Perl trim function to remove whitespace from the start and end of the string
-sub trim($)
-{
-    my $string = shift;
-    $string =~ s/^\s+//;
-    $string =~ s/\s+$//;
-    return $string;
-}
-
-while (<STDIN>)
-{
-    # Load and store alignment
-    s/@/,:/g;
-
-    # Comment character
-    s/;/ @/g;
-
-    # Hexadecimal constants prefaced by 0x
-    s/#&/#0x/g;
-
-    # Convert :OR: to |
-    s/:OR:/ | /g;
-
-    # Convert :AND: to &
-    s/:AND:/ & /g;
-
-    # Convert :NOT: to ~
-    s/:NOT:/ ~ /g;
-
-    # Convert :SHL: to <<
-    s/:SHL:/ << /g;
-
-    # Convert :SHR: to >>
-    s/:SHR:/ >> /g;
-
-    # Convert ELSE to .else
-    s/\bELSE\b/.else/g;
-
-    # Convert ENDIF to .endif
-    s/\bENDIF\b/.endif/g;
-
-    # Convert ELSEIF to .elseif
-    s/\bELSEIF\b/.elseif/g;
-
-    # Convert LTORG to .ltorg
-    s/\bLTORG\b/.ltorg/g;
-
-    # Convert IF :DEF:to .if
-    # gcc doesn't have the ability to do a conditional
-    # if defined variable that is set by IF :DEF: on
-    # armasm, so convert it to a normal .if and then
-    # make sure to define a value elesewhere
-    if (s/\bIF :DEF:\b/.if /g)
-    {
-        s/=/==/g;
-    }
-
-    # Convert IF to .if
-    if (s/\bIF\b/.if/g)
-    {
-        s/=/==/g;
-    }
-
-    # Convert INCLUDE to .INCLUDE "file"
-    s/INCLUDE(\s*)(.*)$/.include $1\"$2\"/;
-
-    # Code directive (ARM vs Thumb)
-    s/CODE([0-9][0-9])/.code $1/;
-
-    # No AREA required
-    # But ALIGNs in AREA must be obeyed
-    s/^\s*AREA.*ALIGN=([0-9])$/.text\n.p2align $1/;
-    # If no ALIGN, strip the AREA and align to 4 bytes
-    s/^\s*AREA.*$/.text\n.p2align 2/;
-
-    # DCD to .word
-    # This one is for incoming symbols
-    s/DCD\s+\|(\w*)\|/.long $1/;
-
-    # DCW to .short
-    s/DCW\s+\|(\w*)\|/.short $1/;
-    s/DCW(.*)/.short $1/;
-
-    # Constants defined in scope
-    s/DCD(.*)/.long $1/;
-    s/DCB(.*)/.byte $1/;
-
-    # Build a hash of all the register - alias pairs.
-    if (s/(.*)RN(.*)/$1 .req $2/g)
-    {
-        $register_aliases{trim($1)} = trim($2);
-        next;
-    }
-
-    while (($key, $value) = each(%register_aliases))
-    {
-        s/\b$key\b/$value/g;
-    }
-
-    # Make function visible to linker, and make additional symbol with
-    # prepended underscore
-    s/EXPORT\s+\|([\$\w]*)\|/.globl _$1\n\t.globl $1/;
-
-    # Prepend imported functions with _
-    if (s/IMPORT\s+\|([\$\w]*)\|/.globl $1/)
-    {
-        $function = trim($1);
-        push(@imported_functions, $function);
-    }
-
-    foreach $function (@imported_functions)
-    {
-        s/$function/_$function/;
-    }
-
-    # No vertical bars required; make additional symbol with prepended
-    # underscore
-    s/^\|(\$?\w+)\|/_$1\n\t$1:/g;
-
-    # Labels need trailing colon
-#   s/^(\w+)/$1:/ if !/EQU/;
-    # put the colon at the end of the line in the macro
-    s/^([a-zA-Z_0-9\$]+)/$1:/ if !/EQU/;
-
-    # ALIGN directive
-    s/\bALIGN\b/.balign/g;
-
-    # Strip ARM
-    s/\sARM/@ ARM/g;
-
-    # Strip REQUIRE8
-    #s/\sREQUIRE8/@ REQUIRE8/g;
-    s/\sREQUIRE8/@ /g;
-
-    # Strip PRESERVE8
-    s/\sPRESERVE8/@ PRESERVE8/g;
-
-    # Strip PROC and ENDPROC
-    s/\bPROC\b/@/g;
-    s/\bENDP\b/@/g;
-
-    # EQU directive
-    s/(.*)EQU(.*)/.set $1, $2/;
-
-    # Begin macro definition
-    if (/\bMACRO\b/)
-    {
-        # Process next line down, which will be the macro definition
-        $_ = <STDIN>;
-
-        $trimmed = trim($_);
-
-        # remove commas that are separating list
-        $trimmed =~ s/,//g;
-
-        # string to array
-        @incoming_array = split(/\s+/, $trimmed);
-
-        print ".macro @incoming_array[0]\n";
-
-        # remove the first element, as that is the name of the macro
-        shift (@incoming_array);
-
-        @macro_aliases{@incoming_array} = @mapping_list;
-
-        next;
-    }
-
-    while (($key, $value) = each(%macro_aliases))
-    {
-        $key =~ s/\$/\\\$/;
-        s/$key\b/$value/g;
-    }
-
-    # For macros, use \ to reference formal params
-#   s/\$/\\/g;                  # End macro definition
-    s/\bMEND\b/.endm/;              # No need to tell it where to stop assembling
-    next if /^\s*END\s*$/;
-
-    # Clang used by Chromium differs slightly from clang in XCode in what it
-    # will accept in the assembly.
-    if ($chromium) {
-        s/qsubaddx/qsax/i;
-        s/qaddsubx/qasx/i;
-        s/ldrneb/ldrbne/i;
-        s/ldrneh/ldrhne/i;
-        s/(vqshrun\.s16 .*, \#)0$/${1}8/i;
-
-        # http://llvm.org/bugs/show_bug.cgi?id=16022
-        s/\.include/#include/;
-    }
-
-    print;
-}
diff --git a/third_party/aom/build/make/armlink_adapter.sh b/third_party/aom/build/make/armlink_adapter.sh
deleted file mode 100755
index 85c6c96c1..000000000
--- a/third_party/aom/build/make/armlink_adapter.sh
+++ /dev/null
@@ -1,53 +0,0 @@
-#!/bin/sh
-## Copyright (c) 2016, 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.
-##
-
-verbose=0
-set -- $*
-for i; do
-    if [ "$i" = "-o" ]; then
-        on_of=1
-    elif [ "$i" = "-v" ]; then
-        verbose=1
-    elif [ "$i" = "-g" ]; then
-        args="${args} --debug"
-    elif [ "$on_of" = "1" ]; then
-        outfile=$i
-        on_of=0
-    elif [ -f "$i" ]; then
-        infiles="$infiles $i"
-    elif [ "${i#-l}" != "$i" ]; then
-        libs="$libs ${i#-l}"
-    elif [ "${i#-L}" != "$i" ]; then
-        libpaths="${libpaths} ${i#-L}"
-    else
-        args="${args} ${i}"
-    fi
-    shift
-done
-
-# Absolutize library file names
-for f in $libs; do
-    found=0
-    for d in $libpaths; do
-        [ -f "$d/$f" ] && infiles="$infiles $d/$f" && found=1 && break
-        [ -f "$d/lib${f}.so" ] && infiles="$infiles $d/lib${f}.so" && found=1 && break
-        [ -f "$d/lib${f}.a" ] && infiles="$infiles $d/lib${f}.a" && found=1 && break
-    done
-    [ $found -eq 0 ] && infiles="$infiles $f"
-done
-for d in $libpaths; do
-    [ -n "$libsearchpath" ] && libsearchpath="${libsearchpath},"
-    libsearchpath="${libsearchpath}$d"
-done
-
-cmd="armlink $args --userlibpath=$libsearchpath --output=$outfile $infiles"
-[ $verbose -eq 1 ] && echo $cmd
-$cmd
diff --git a/third_party/aom/build/make/configure.sh b/third_party/aom/build/make/configure.sh
deleted file mode 100644
index b18173b82..000000000
--- a/third_party/aom/build/make/configure.sh
+++ /dev/null
@@ -1,1522 +0,0 @@
-#!/bin/sh
-##
-##  configure.sh
-##
-##  This script is sourced by the main configure script and contains
-##  utility functions and other common bits that aren't strictly libaom
-##  related.
-##
-##  This build system is based in part on the FFmpeg configure script.
-##
-
-
-#
-# Logging / Output Functions
-#
-die_unknown(){
-  echo "Unknown option \"$1\"."
-  echo "See $0 --help for available options."
-  clean_temp_files
-  exit 1
-}
-
-die() {
-  echo "$@"
-  echo
-  echo "Configuration failed. This could reflect a misconfiguration of your"
-  echo "toolchains, improper options selected, or another problem. If you"
-  echo "don't see any useful error messages above, the next step is to look"
-  echo "at the configure error log file ($logfile) to determine what"
-  echo "configure was trying to do when it died."
-  clean_temp_files
-  exit 1
-}
-
-log(){
-  echo "$@" >>$logfile
-}
-
-log_file(){
-  log BEGIN $1
-  cat -n $1 >>$logfile
-  log END $1
-}
-
-log_echo() {
-  echo "$@"
-  log "$@"
-}
-
-fwrite () {
-  outfile=$1
-  shift
-  echo "$@" >> ${outfile}
-}
-
-show_help_pre(){
-  for opt in ${CMDLINE_SELECT}; do
-    opt2=`echo $opt | sed -e 's;_;-;g'`
-    if enabled $opt; then
-      eval "toggle_${opt}=\"--disable-${opt2}\""
-    else
-      eval "toggle_${opt}=\"--enable-${opt2} \""
-    fi
-  done
-
-  cat <<EOF
-Usage: configure [options]
-Options:
-
-Build options:
-  --help                      print this message
-  --log=yes|no|FILE           file configure log is written to [config.log]
-  --target=TARGET             target platform tuple [generic-gnu]
-  --cpu=CPU                   optimize for a specific cpu rather than a family
-  --extra-cflags=ECFLAGS      add ECFLAGS to CFLAGS [$CFLAGS]
-  --extra-cxxflags=ECXXFLAGS  add ECXXFLAGS to CXXFLAGS [$CXXFLAGS]
-  ${toggle_extra_warnings}    emit harmless warnings (always non-fatal)
-  ${toggle_werror}            treat warnings as errors, if possible
-                              (not available with all compilers)
-  ${toggle_optimizations}     turn on/off compiler optimization flags
-  ${toggle_pic}               turn on/off Position Independent Code
-  ${toggle_ccache}            turn on/off compiler cache
-  ${toggle_debug}             enable/disable debug mode
-  ${toggle_gprof}             enable/disable gprof profiling instrumentation
-  ${toggle_gcov}              enable/disable gcov coverage instrumentation
-  ${toggle_thumb}             enable/disable building arm assembly in thumb mode
-  ${toggle_dependency_tracking}
-                              disable to speed up one-time build
-
-Install options:
-  ${toggle_install_docs}      control whether docs are installed
-  ${toggle_install_bins}      control whether binaries are installed
-  ${toggle_install_libs}      control whether libraries are installed
-  ${toggle_install_srcs}      control whether sources are installed
-
-
-EOF
-}
-
-show_help_post(){
-  cat <<EOF
-
-
-NOTES:
-    Object files are built at the place where configure is launched.
-
-    All boolean options can be negated. The default value is the opposite
-    of that shown above. If the option --disable-foo is listed, then
-    the default value for foo is enabled.
-
-Supported targets:
-EOF
-  show_targets ${all_platforms}
-  echo
-  exit 1
-}
-
-show_targets() {
-  while [ -n "$*" ]; do
-    if [ "${1%%-*}" = "${2%%-*}" ]; then
-      if [ "${2%%-*}" = "${3%%-*}" ]; then
-        printf "    %-24s %-24s %-24s\n" "$1" "$2" "$3"
-        shift; shift; shift
-      else
-        printf "    %-24s %-24s\n" "$1" "$2"
-        shift; shift
-      fi
-    else
-      printf "    %-24s\n" "$1"
-      shift
-    fi
-  done
-}
-
-show_help() {
-  show_help_pre
-  show_help_post
-}
-
-#
-# List Processing Functions
-#
-set_all(){
-  value=$1
-  shift
-  for var in $*; do
-    eval $var=$value
-  done
-}
-
-is_in(){
-  value=$1
-  shift
-  for var in $*; do
-    [ $var = $value ] && return 0
-  done
-  return 1
-}
-
-add_cflags() {
-  CFLAGS="${CFLAGS} $@"
-  CXXFLAGS="${CXXFLAGS} $@"
-}
-
-add_cflags_only() {
-  CFLAGS="${CFLAGS} $@"
-}
-
-add_cxxflags_only() {
-  CXXFLAGS="${CXXFLAGS} $@"
-}
-
-add_ldflags() {
-  LDFLAGS="${LDFLAGS} $@"
-}
-
-add_asflags() {
-  ASFLAGS="${ASFLAGS} $@"
-}
-
-add_extralibs() {
-  extralibs="${extralibs} $@"
-}
-
-#
-# Boolean Manipulation Functions
-#
-
-enable_feature(){
-  set_all yes $*
-}
-
-disable_feature(){
-  set_all no $*
-}
-
-enabled(){
-  eval test "x\$$1" = "xyes"
-}
-
-disabled(){
-  eval test "x\$$1" = "xno"
-}
-
-enable_codec(){
-  enabled "${1}" || echo "  enabling ${1}"
-  enable_feature "${1}"
-
-  is_in "${1}" av1 && enable_feature "${1}_encoder" "${1}_decoder"
-}
-
-disable_codec(){
-  disabled "${1}" || echo "  disabling ${1}"
-  disable_feature "${1}"
-
-  is_in "${1}" av1 && disable_feature "${1}_encoder" "${1}_decoder"
-}
-
-# Iterates through positional parameters, checks to confirm the parameter has
-# not been explicitly (force) disabled, and enables the setting controlled by
-# the parameter when the setting is not disabled.
-# Note: Does NOT alter RTCD generation options ($RTCD_OPTIONS).
-soft_enable() {
-  for var in $*; do
-    if ! disabled $var; then
-      enabled $var || log_echo "  enabling $var"
-      enable_feature $var
-    fi
-  done
-}
-
-# Iterates through positional parameters, checks to confirm the parameter has
-# not been explicitly (force) enabled, and disables the setting controlled by
-# the parameter when the setting is not enabled.
-# Note: Does NOT alter RTCD generation options ($RTCD_OPTIONS).
-soft_disable() {
-  for var in $*; do
-    if ! enabled $var; then
-      disabled $var || log_echo "  disabling $var"
-      disable_feature $var
-    fi
-  done
-}
-
-#
-# Text Processing Functions
-#
-toupper(){
-  echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
-}
-
-tolower(){
-  echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
-}
-
-#
-# Temporary File Functions
-#
-source_path=${0%/*}
-enable_feature source_path_used
-if [ -z "$source_path" ] || [ "$source_path" = "." ]; then
-  source_path="`pwd`"
-  disable_feature source_path_used
-fi
-
-if test ! -z "$TMPDIR" ; then
-  TMPDIRx="${TMPDIR}"
-elif test ! -z "$TEMPDIR" ; then
-  TMPDIRx="${TEMPDIR}"
-else
-  TMPDIRx="/tmp"
-fi
-RAND=$(awk 'BEGIN { srand(); printf "%d\n",(rand() * 32768)}')
-TMP_H="${TMPDIRx}/aom-conf-$$-${RAND}.h"
-TMP_C="${TMPDIRx}/aom-conf-$$-${RAND}.c"
-TMP_CC="${TMPDIRx}/aom-conf-$$-${RAND}.cc"
-TMP_O="${TMPDIRx}/aom-conf-$$-${RAND}.o"
-TMP_X="${TMPDIRx}/aom-conf-$$-${RAND}.x"
-TMP_ASM="${TMPDIRx}/aom-conf-$$-${RAND}.asm"
-
-clean_temp_files() {
-  rm -f ${TMP_C} ${TMP_CC} ${TMP_H} ${TMP_O} ${TMP_X} ${TMP_ASM}
-  enabled gcov && rm -f ${TMP_C%.c}.gcno ${TMP_CC%.cc}.gcno
-}
-
-#
-# Toolchain Check Functions
-#
-check_cmd() {
-  enabled external_build && return
-  log "$@"
-  "$@" >>${logfile} 2>&1
-}
-
-check_cc() {
-  log check_cc "$@"
-  cat >${TMP_C}
-  log_file ${TMP_C}
-  check_cmd ${CC} ${CFLAGS} "$@" -c -o ${TMP_O} ${TMP_C}
-}
-
-check_cxx() {
-  log check_cxx "$@"
-  cat >${TMP_CC}
-  log_file ${TMP_CC}
-  check_cmd ${CXX} ${CXXFLAGS} "$@" -c -o ${TMP_O} ${TMP_CC}
-}
-
-check_cpp() {
-  log check_cpp "$@"
-  cat > ${TMP_C}
-  log_file ${TMP_C}
-  check_cmd ${CC} ${CFLAGS} "$@" -E -o ${TMP_O} ${TMP_C}
-}
-
-check_ld() {
-  log check_ld "$@"
-  check_cc $@ \
-    && check_cmd ${LD} ${LDFLAGS} "$@" -o ${TMP_X} ${TMP_O} ${extralibs}
-}
-
-check_header(){
-  log check_header "$@"
-  header=$1
-  shift
-  var=`echo $header | sed 's/[^A-Za-z0-9_]/_/g'`
-  disable_feature $var
-  check_cpp "$@" <<EOF && enable_feature $var
-#include "$header"
-int x;
-EOF
-}
-
-check_cflags() {
- log check_cflags "$@"
- check_cc -Werror "$@" <<EOF
-int x;
-EOF
-}
-
-check_cxxflags() {
-  log check_cxxflags "$@"
-
-  # Catch CFLAGS that trigger CXX warnings
-  case "$CXX" in
-    *c++-analyzer|*clang++|*g++*)
-      check_cxx -Werror "$@" <<EOF
-int x;
-EOF
-      ;;
-    *)
-      check_cxx -Werror "$@" <<EOF
-int x;
-EOF
-      ;;
-    esac
-}
-
-check_add_cflags() {
-  check_cxxflags "$@" && add_cxxflags_only "$@"
-  check_cflags "$@" && add_cflags_only "$@"
-}
-
-check_add_cxxflags() {
-  check_cxxflags "$@" && add_cxxflags_only "$@"
-}
-
-check_add_asflags() {
-  log add_asflags "$@"
-  add_asflags "$@"
-}
-
-check_add_ldflags() {
-  log add_ldflags "$@"
-  add_ldflags "$@"
-}
-
-check_asm_align() {
-  log check_asm_align "$@"
-  cat >${TMP_ASM} <<EOF
-section .rodata
-align 16
-EOF
-  log_file ${TMP_ASM}
-  check_cmd ${AS} ${ASFLAGS} -o ${TMP_O} ${TMP_ASM}
-  readelf -WS ${TMP_O} >${TMP_X}
-  log_file ${TMP_X}
-  if ! grep -q '\.rodata .* 16$' ${TMP_X}; then
-    die "${AS} ${ASFLAGS} does not support section alignment (nasm <=2.08?)"
-  fi
-}
-
-# tests for -m$1 toggling the feature given in $2. If $2 is empty $1 is used.
-check_gcc_machine_option() {
-  opt="$1"
-  feature="$2"
-  [ -n "$feature" ] || feature="$opt"
-
-  if enabled gcc && ! disabled "$feature" && ! check_cflags "-m$opt"; then
-    RTCD_OPTIONS="${RTCD_OPTIONS}--disable-$feature "
-  else
-    soft_enable "$feature"
-  fi
-}
-
-write_common_config_banner() {
-  print_webm_license config.mk "##" ""
-  echo '# This file automatically generated by configure. Do not edit!' >> config.mk
-  echo "TOOLCHAIN := ${toolchain}" >> config.mk
-
-  case ${toolchain} in
-    *-linux-rvct)
-      echo "ALT_LIBC := ${alt_libc}" >> config.mk
-      ;;
-  esac
-}
-
-write_common_config_targets() {
-  for t in ${all_targets}; do
-    if enabled ${t}; then
-      if enabled child; then
-        fwrite config.mk "ALL_TARGETS += ${t}-${toolchain}"
-      else
-        fwrite config.mk "ALL_TARGETS += ${t}"
-      fi
-    fi
-    true;
-  done
-  true
-}
-
-write_common_target_config_mk() {
-  saved_CC="${CC}"
-  saved_CXX="${CXX}"
-  enabled ccache && CC="ccache ${CC}"
-  enabled ccache && CXX="ccache ${CXX}"
-  print_webm_license $1 "##" ""
-
-  cat >> $1 << EOF
-# This file automatically generated by configure. Do not edit!
-SRC_PATH="$source_path"
-SRC_PATH_BARE=$source_path
-BUILD_PFX=${BUILD_PFX}
-TOOLCHAIN=${toolchain}
-ASM_CONVERSION=${asm_conversion_cmd:-${source_path}/build/make/ads2gas.pl}
-GEN_VCPROJ=${gen_vcproj_cmd}
-MSVS_ARCH_DIR=${msvs_arch_dir}
-
-CC=${CC}
-CXX=${CXX}
-AR=${AR}
-LD=${LD}
-AS=${AS}
-STRIP=${STRIP}
-NM=${NM}
-
-CFLAGS  = ${CFLAGS}
-CXXFLAGS  = ${CXXFLAGS}
-ARFLAGS = crs\$(if \$(quiet),,v)
-LDFLAGS = ${LDFLAGS}
-ASFLAGS = ${ASFLAGS}
-extralibs = ${extralibs}
-AS_SFX    = ${AS_SFX:-.asm}
-EXE_SFX   = ${EXE_SFX}
-VCPROJ_SFX = ${VCPROJ_SFX}
-RTCD_OPTIONS = ${RTCD_OPTIONS}
-WX_CXXFLAGS = ${WX_CXXFLAGS}
-WX_LDFLAGS = ${WX_LDFLAGS}
-EOF
-
-  if enabled rvct; then cat >> $1 << EOF
-fmt_deps = sed -e 's;^__image.axf;\${@:.d=.o} \$@;' #hide
-EOF
-  else cat >> $1 << EOF
-fmt_deps = sed -e 's;^\([a-zA-Z0-9_]*\)\.o;\${@:.d=.o} \$@;'
-EOF
-  fi
-
-  print_config_mk ARCH   "${1}" ${ARCH_LIST}
-  print_config_mk HAVE   "${1}" ${HAVE_LIST}
-  print_config_mk CONFIG "${1}" ${CONFIG_LIST}
-  print_config_mk HAVE   "${1}" gnu_strip
-
-  enabled msvs && echo "CONFIG_VS_VERSION=${vs_version}" >> "${1}"
-
-  CC="${saved_CC}"
-  CXX="${saved_CXX}"
-}
-
-write_common_target_config_h() {
-  print_webm_license ${TMP_H} "/*" " */"
-  cat >> ${TMP_H} << EOF
-/* This file automatically generated by configure. Do not edit! */
-#ifndef AOM_CONFIG_H
-#define AOM_CONFIG_H
-#define RESTRICT    ${RESTRICT}
-#define INLINE      ${INLINE}
-EOF
-  print_config_h ARCH   "${TMP_H}" ${ARCH_LIST}
-  print_config_h HAVE   "${TMP_H}" ${HAVE_LIST}
-  print_config_h CONFIG "${TMP_H}" ${CONFIG_LIST}
-  print_config_vars_h   "${TMP_H}" ${VAR_LIST}
-  echo "#endif /* AOM_CONFIG_H */" >> ${TMP_H}
-  mkdir -p `dirname "$1"`
-  cmp "$1" ${TMP_H} >/dev/null 2>&1 || mv ${TMP_H} "$1"
-}
-
-process_common_cmdline() {
-  for opt in "$@"; do
-    optval="${opt#*=}"
-    case "$opt" in
-      --child)
-        enable_feature child
-        ;;
-      --log*)
-        logging="$optval"
-        if ! disabled logging ; then
-          enabled logging || logfile="$logging"
-        else
-          logfile=/dev/null
-        fi
-        ;;
-      --target=*)
-        toolchain="${toolchain:-${optval}}"
-        ;;
-      --force-target=*)
-        toolchain="${toolchain:-${optval}}"
-        enable_feature force_toolchain
-        ;;
-      --cpu=*)
-        tune_cpu="$optval"
-        ;;
-      --extra-cflags=*)
-        extra_cflags="${optval}"
-        ;;
-      --extra-cxxflags=*)
-        extra_cxxflags="${optval}"
-        ;;
-      --enable-?*|--disable-?*)
-        eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
-        if is_in ${option} ${ARCH_EXT_LIST}; then
-          [ $action = "disable" ] && RTCD_OPTIONS="${RTCD_OPTIONS}--disable-${option} "
-        elif [ $action = "disable" ] && ! disabled $option ; then
-          is_in ${option} ${CMDLINE_SELECT} || die_unknown $opt
-          log_echo "  disabling $option"
-        elif [ $action = "enable" ] && ! enabled $option ; then
-          is_in ${option} ${CMDLINE_SELECT} || die_unknown $opt
-          log_echo "  enabling $option"
-        fi
-        ${action}_feature $option
-        ;;
-      --require-?*)
-        eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
-        if is_in ${option} ${ARCH_EXT_LIST}; then
-            RTCD_OPTIONS="${RTCD_OPTIONS}${opt} "
-        else
-            die_unknown $opt
-        fi
-        ;;
-      --force-enable-?*|--force-disable-?*)
-        eval `echo "$opt" | sed 's/--force-/action=/;s/-/ option=/;s/-/_/g'`
-        ${action}_feature $option
-        ;;
-      --libc=*)
-        [ -d "${optval}" ] || die "Not a directory: ${optval}"
-        disable_feature builtin_libc
-        alt_libc="${optval}"
-        ;;
-      --as=*)
-        [ "${optval}" = yasm ] || [ "${optval}" = nasm ] \
-          || [ "${optval}" = auto ] \
-          || die "Must be yasm, nasm or auto: ${optval}"
-        alt_as="${optval}"
-        ;;
-      --size-limit=*)
-        w="${optval%%x*}"
-        h="${optval##*x}"
-        VAR_LIST="DECODE_WIDTH_LIMIT ${w} DECODE_HEIGHT_LIMIT ${h}"
-        [ ${w} -gt 0 ] && [ ${h} -gt 0 ] || die "Invalid size-limit: too small."
-        [ ${w} -lt 65536 ] && [ ${h} -lt 65536 ] \
-            || die "Invalid size-limit: too big."
-        enable_feature size_limit
-        ;;
-      --prefix=*)
-        prefix="${optval}"
-        ;;
-      --libdir=*)
-        libdir="${optval}"
-        ;;
-      --sdk-path=*)
-        [ -d "${optval}" ] || die "Not a directory: ${optval}"
-        sdk_path="${optval}"
-        ;;
-      --libc|--as|--prefix|--libdir|--sdk-path)
-        die "Option ${opt} requires argument"
-        ;;
-      --help|-h)
-        show_help
-        ;;
-      *)
-        die_unknown $opt
-        ;;
-    esac
-  done
-}
-
-process_cmdline() {
-  for opt do
-    optval="${opt#*=}"
-    case "$opt" in
-      *)
-        process_common_cmdline $opt
-        ;;
-    esac
-  done
-}
-
-post_process_common_cmdline() {
-  prefix="${prefix:-/usr/local}"
-  prefix="${prefix%/}"
-  libdir="${libdir:-${prefix}/lib}"
-  libdir="${libdir%/}"
-  if [ "${libdir#${prefix}}" = "${libdir}" ]; then
-    die "Libdir ${libdir} must be a subdirectory of ${prefix}"
-  fi
-}
-
-post_process_cmdline() {
-  true;
-}
-
-setup_gnu_toolchain() {
-  CC=${CC:-${CROSS}gcc}
-  CXX=${CXX:-${CROSS}g++}
-  AR=${AR:-${CROSS}ar}
-  LD=${LD:-${CROSS}${link_with_cc:-ld}}
-  AS=${AS:-${CROSS}as}
-  STRIP=${STRIP:-${CROSS}strip}
-  NM=${NM:-${CROSS}nm}
-  AS_SFX=.s
-  EXE_SFX=
-}
-
-# Reliably find the newest available Darwin SDKs. (Older versions of
-# xcrun don't support --show-sdk-path.)
-show_darwin_sdk_path() {
-  xcrun --sdk $1 --show-sdk-path 2>/dev/null ||
-    xcodebuild -sdk $1 -version Path 2>/dev/null
-}
-
-# Print the major version number of the Darwin SDK specified by $1.
-show_darwin_sdk_major_version() {
-  xcrun --sdk $1 --show-sdk-version 2>/dev/null | cut -d. -f1
-}
-
-# Print the Xcode version.
-show_xcode_version() {
-  xcodebuild -version | head -n1 | cut -d' ' -f2
-}
-
-# Fails when Xcode version is less than 6.3.
-check_xcode_minimum_version() {
-  xcode_major=$(show_xcode_version | cut -f1 -d.)
-  xcode_minor=$(show_xcode_version | cut -f2 -d.)
-  xcode_min_major=6
-  xcode_min_minor=3
-  if [ ${xcode_major} -lt ${xcode_min_major} ]; then
-    return 1
-  fi
-  if [ ${xcode_major} -eq ${xcode_min_major} ] \
-    && [ ${xcode_minor} -lt ${xcode_min_minor} ]; then
-    return 1
-  fi
-}
-
-process_common_toolchain() {
-  case "$toolchain" in
-    *-vs*) ;;
-    *) add_cflags_only -std=c99 ;;
-  esac
-
-  if [ -z "$toolchain" ]; then
-    gcctarget="${CHOST:-$(gcc -dumpmachine 2> /dev/null)}"
-
-    # detect tgt_isa
-    case "$gcctarget" in
-      aarch64*)
-        tgt_isa=arm64
-        ;;
-      armv7*-hardfloat* | armv7*-gnueabihf | arm-*-gnueabihf)
-        tgt_isa=armv7
-        float_abi=hard
-        ;;
-      armv7*)
-        tgt_isa=armv7
-        float_abi=softfp
-        ;;
-      *x86_64*|*amd64*)
-        tgt_isa=x86_64
-        ;;
-      *i[3456]86*)
-        tgt_isa=x86
-        ;;
-      *sparc*)
-        tgt_isa=sparc
-        ;;
-    esac
-
-    # detect tgt_os
-    case "$gcctarget" in
-      *darwin10*)
-        tgt_isa=x86_64
-        tgt_os=darwin10
-        ;;
-      *darwin11*)
-        tgt_isa=x86_64
-        tgt_os=darwin11
-        ;;
-      *darwin12*)
-        tgt_isa=x86_64
-        tgt_os=darwin12
-        ;;
-      *darwin13*)
-        tgt_isa=x86_64
-        tgt_os=darwin13
-        ;;
-      *darwin14*)
-        tgt_isa=x86_64
-        tgt_os=darwin14
-        ;;
-      *darwin15*)
-        tgt_isa=x86_64
-        tgt_os=darwin15
-        ;;
-       *darwin16*)
-        tgt_isa=x86_64
-        tgt_os=darwin16
-        ;;
-      x86_64*mingw32*)
-        tgt_os=win64
-        ;;
-      *mingw32*|*cygwin*)
-        [ -z "$tgt_isa" ] && tgt_isa=x86
-        tgt_os=win32
-        ;;
-      *linux*|*bsd*)
-        tgt_os=linux
-        ;;
-      *solaris2.10)
-        tgt_os=solaris
-        ;;
-      *os2*)
-        tgt_os=os2
-        ;;
-    esac
-
-    if [ -n "$tgt_isa" ] && [ -n "$tgt_os" ]; then
-      toolchain=${tgt_isa}-${tgt_os}-gcc
-    fi
-  fi
-
-  toolchain=${toolchain:-generic-gnu}
-
-  is_in ${toolchain} ${all_platforms} || enabled force_toolchain \
-    || die "Unrecognized toolchain '${toolchain}'"
-
-  enabled child || log_echo "Configuring for target '${toolchain}'"
-
-  #
-  # Set up toolchain variables
-  #
-  tgt_isa=$(echo ${toolchain} | awk 'BEGIN{FS="-"}{print $1}')
-  tgt_os=$(echo ${toolchain} | awk 'BEGIN{FS="-"}{print $2}')
-  tgt_cc=$(echo ${toolchain} | awk 'BEGIN{FS="-"}{print $3}')
-
-  # Mark the specific ISA requested as enabled
-  soft_enable ${tgt_isa}
-  enable_feature ${tgt_os}
-  enable_feature ${tgt_cc}
-
-  # Enable the architecture family
-  case ${tgt_isa} in
-    arm*)
-      enable_feature arm
-      ;;
-    mips*)
-      enable_feature mips
-      ;;
-  esac
-
-  # PIC is probably what we want when building shared libs
-  enabled shared && soft_enable pic
-
-  # Minimum iOS version for all target platforms (darwin and iphonesimulator).
-  # Shared library framework builds are only possible on iOS 8 and later.
-  if enabled shared; then
-    IOS_VERSION_OPTIONS="--enable-shared"
-    IOS_VERSION_MIN="8.0"
-  else
-    IOS_VERSION_OPTIONS=""
-    IOS_VERSION_MIN="6.0"
-  fi
-
-  # Handle darwin variants. Newer SDKs allow targeting older
-  # platforms, so use the newest one available.
-  case ${toolchain} in
-    arm*-darwin*)
-      add_cflags "-miphoneos-version-min=${IOS_VERSION_MIN}"
-      iphoneos_sdk_dir="$(show_darwin_sdk_path iphoneos)"
-      if [ -d "${iphoneos_sdk_dir}" ]; then
-        add_cflags  "-isysroot ${iphoneos_sdk_dir}"
-        add_ldflags "-isysroot ${iphoneos_sdk_dir}"
-      fi
-      ;;
-    x86*-darwin*)
-      osx_sdk_dir="$(show_darwin_sdk_path macosx)"
-      if [ -d "${osx_sdk_dir}" ]; then
-        add_cflags  "-isysroot ${osx_sdk_dir}"
-        add_ldflags "-isysroot ${osx_sdk_dir}"
-      fi
-      ;;
-  esac
-
-  case ${toolchain} in
-    *-darwin8-*)
-      add_cflags  "-mmacosx-version-min=10.4"
-      add_ldflags "-mmacosx-version-min=10.4"
-      ;;
-    *-darwin9-*)
-      add_cflags  "-mmacosx-version-min=10.5"
-      add_ldflags "-mmacosx-version-min=10.5"
-      ;;
-    *-darwin10-*)
-      add_cflags  "-mmacosx-version-min=10.6"
-      add_ldflags "-mmacosx-version-min=10.6"
-      ;;
-    *-darwin11-*)
-      add_cflags  "-mmacosx-version-min=10.7"
-      add_ldflags "-mmacosx-version-min=10.7"
-      ;;
-    *-darwin12-*)
-      add_cflags  "-mmacosx-version-min=10.8"
-      add_ldflags "-mmacosx-version-min=10.8"
-      ;;
-    *-darwin13-*)
-      add_cflags  "-mmacosx-version-min=10.9"
-      add_ldflags "-mmacosx-version-min=10.9"
-      ;;
-    *-darwin14-*)
-      add_cflags  "-mmacosx-version-min=10.10"
-      add_ldflags "-mmacosx-version-min=10.10"
-      ;;
-    *-darwin15-*)
-      add_cflags  "-mmacosx-version-min=10.11"
-      add_ldflags "-mmacosx-version-min=10.11"
-      ;;
-    *-darwin16-*)
-      add_cflags  "-mmacosx-version-min=10.12"
-      add_ldflags "-mmacosx-version-min=10.12"
-      ;;
-    *-iphonesimulator-*)
-      add_cflags  "-miphoneos-version-min=${IOS_VERSION_MIN}"
-      add_ldflags "-miphoneos-version-min=${IOS_VERSION_MIN}"
-      iossim_sdk_dir="$(show_darwin_sdk_path iphonesimulator)"
-      if [ -d "${iossim_sdk_dir}" ]; then
-        add_cflags  "-isysroot ${iossim_sdk_dir}"
-        add_ldflags "-isysroot ${iossim_sdk_dir}"
-      fi
-      ;;
-  esac
-
-  # Handle Solaris variants. Solaris 10 needs -lposix4
-  case ${toolchain} in
-    sparc-solaris-*)
-      add_extralibs -lposix4
-      ;;
-    *-solaris-*)
-      add_extralibs -lposix4
-      ;;
-  esac
-
-  # Process ARM architecture variants
-  case ${toolchain} in
-    arm*)
-      # on arm, isa versions are supersets
-      case ${tgt_isa} in
-        arm64|armv8)
-          soft_enable neon
-          ;;
-        armv7|armv7s)
-          soft_enable neon
-          # Only enable neon_asm when neon is also enabled.
-          enabled neon && soft_enable neon_asm
-          # If someone tries to force it through, die.
-          if disabled neon && enabled neon_asm; then
-            die "Disabling neon while keeping neon-asm is not supported"
-          fi
-      esac
-
-      asm_conversion_cmd="cat"
-
-      case ${tgt_cc} in
-        gcc)
-          link_with_cc=gcc
-          setup_gnu_toolchain
-          arch_int=${tgt_isa##armv}
-          arch_int=${arch_int%%te}
-          check_add_asflags --defsym ARCHITECTURE=${arch_int}
-          tune_cflags="-mtune="
-          if [ ${tgt_isa} = "armv7" ] || [ ${tgt_isa} = "armv7s" ]; then
-            if [ -z "${float_abi}" ]; then
-              check_cpp <<EOF && float_abi=hard || float_abi=softfp
-#ifndef __ARM_PCS_VFP
-#error "not hardfp"
-#endif
-EOF
-            fi
-            check_add_cflags  -march=armv7-a -mfloat-abi=${float_abi}
-            check_add_asflags -march=armv7-a -mfloat-abi=${float_abi}
-
-            if enabled neon || enabled neon_asm; then
-              check_add_cflags -mfpu=neon #-ftree-vectorize
-              check_add_asflags -mfpu=neon
-            fi
-          elif [ ${tgt_isa} = "arm64" ] || [ ${tgt_isa} = "armv8" ]; then
-            check_add_cflags -march=armv8-a
-            check_add_asflags -march=armv8-a
-          else
-            check_add_cflags -march=${tgt_isa}
-            check_add_asflags -march=${tgt_isa}
-          fi
-
-          enabled debug && add_asflags -g
-          asm_conversion_cmd="${source_path}/build/make/ads2gas.pl"
-          if enabled thumb; then
-            asm_conversion_cmd="$asm_conversion_cmd -thumb"
-            check_add_cflags -mthumb
-            check_add_asflags -mthumb -mimplicit-it=always
-          fi
-          ;;
-        vs*)
-          asm_conversion_cmd="${source_path}/build/make/ads2armasm_ms.pl"
-          AS_SFX=.s
-          msvs_arch_dir=arm-msvs
-          disable_feature multithread
-          disable_feature unit_tests
-          vs_version=${tgt_cc##vs}
-          # MSVC 2013 doesn't allow doing plain .exe projects for ARM,
-          # only "AppContainerApplication" which requires an AppxManifest.
-          # Therefore disable the examples, just build the library.
-          disable_feature examples
-          ;;
-        rvct)
-          CC=armcc
-          AR=armar
-          AS=armasm
-          LD="${source_path}/build/make/armlink_adapter.sh"
-          STRIP=arm-none-linux-gnueabi-strip
-          NM=arm-none-linux-gnueabi-nm
-          tune_cflags="--cpu="
-          tune_asflags="--cpu="
-          if [ -z "${tune_cpu}" ]; then
-            if [ ${tgt_isa} = "armv7" ]; then
-              if enabled neon || enabled neon_asm
-              then
-                check_add_cflags --fpu=softvfp+vfpv3
-                check_add_asflags --fpu=softvfp+vfpv3
-              fi
-              check_add_cflags --cpu=Cortex-A8
-              check_add_asflags --cpu=Cortex-A8
-            else
-              check_add_cflags --cpu=${tgt_isa##armv}
-              check_add_asflags --cpu=${tgt_isa##armv}
-            fi
-          fi
-          arch_int=${tgt_isa##armv}
-          arch_int=${arch_int%%te}
-          check_add_asflags --pd "\"ARCHITECTURE SETA ${arch_int}\""
-          enabled debug && add_asflags -g
-          add_cflags --gnu
-          add_cflags --enum_is_int
-          add_cflags --wchar32
-          ;;
-      esac
-
-      case ${tgt_os} in
-        none*)
-          disable_feature multithread
-          disable_feature os_support
-          ;;
-
-        android*)
-          if [ -z "${sdk_path}" ]; then
-            die "Must specify --sdk-path for Android builds."
-          fi
-
-          SDK_PATH=${sdk_path}
-          COMPILER_LOCATION=`find "${SDK_PATH}" \
-                             -name "arm-linux-androideabi-gcc*" -print -quit`
-          TOOLCHAIN_PATH=${COMPILER_LOCATION%/*}/arm-linux-androideabi-
-          CC=${TOOLCHAIN_PATH}gcc
-          CXX=${TOOLCHAIN_PATH}g++
-          AR=${TOOLCHAIN_PATH}ar
-          LD=${TOOLCHAIN_PATH}gcc
-          AS=${TOOLCHAIN_PATH}as
-          STRIP=${TOOLCHAIN_PATH}strip
-          NM=${TOOLCHAIN_PATH}nm
-
-          if [ -z "${alt_libc}" ]; then
-            alt_libc=`find "${SDK_PATH}" -name arch-arm -print | \
-              awk '{n = split($0,a,"/"); \
-                split(a[n-1],b,"-"); \
-                print $0 " " b[2]}' | \
-                sort -g -k 2 | \
-                awk '{ print $1 }' | tail -1`
-          fi
-
-          if [ -d "${alt_libc}" ]; then
-            add_cflags "--sysroot=${alt_libc}"
-            add_ldflags "--sysroot=${alt_libc}"
-          fi
-
-          # linker flag that routes around a CPU bug in some
-          # Cortex-A8 implementations (NDK Dev Guide)
-          add_ldflags "-Wl,--fix-cortex-a8"
-
-          enable_feature pic
-          soft_enable realtime_only
-          if [ ${tgt_isa} = "armv7" ]; then
-            soft_enable runtime_cpu_detect
-          fi
-          if enabled runtime_cpu_detect; then
-            add_cflags "-I${SDK_PATH}/sources/android/cpufeatures"
-          fi
-          ;;
-
-        darwin*)
-          XCRUN_FIND="xcrun --sdk iphoneos --find"
-          CXX="$(${XCRUN_FIND} clang++)"
-          CC="$(${XCRUN_FIND} clang)"
-          AR="$(${XCRUN_FIND} ar)"
-          AS="$(${XCRUN_FIND} as)"
-          STRIP="$(${XCRUN_FIND} strip)"
-          NM="$(${XCRUN_FIND} nm)"
-          RANLIB="$(${XCRUN_FIND} ranlib)"
-          AS_SFX=.s
-          LD="${CXX:-$(${XCRUN_FIND} ld)}"
-
-          # ASFLAGS is written here instead of using check_add_asflags
-          # because we need to overwrite all of ASFLAGS and purge the
-          # options that were put in above
-          ASFLAGS="-arch ${tgt_isa} -g"
-
-          add_cflags -arch ${tgt_isa}
-          add_ldflags -arch ${tgt_isa}
-
-          alt_libc="$(show_darwin_sdk_path iphoneos)"
-          if [ -d "${alt_libc}" ]; then
-            add_cflags -isysroot ${alt_libc}
-          fi
-
-          if [ "${LD}" = "${CXX}" ]; then
-            add_ldflags -miphoneos-version-min="${IOS_VERSION_MIN}"
-          else
-            add_ldflags -ios_version_min "${IOS_VERSION_MIN}"
-          fi
-
-          for d in lib usr/lib usr/lib/system; do
-            try_dir="${alt_libc}/${d}"
-            [ -d "${try_dir}" ] && add_ldflags -L"${try_dir}"
-          done
-
-          case ${tgt_isa} in
-            armv7|armv7s|armv8|arm64)
-              if enabled neon && ! check_xcode_minimum_version; then
-                soft_disable neon
-                log_echo "  neon disabled: upgrade Xcode (need v6.3+)."
-                if enabled neon_asm; then
-                  soft_disable neon_asm
-                  log_echo "  neon_asm disabled: upgrade Xcode (need v6.3+)."
-                fi
-              fi
-              ;;
-          esac
-
-          asm_conversion_cmd="${source_path}/build/make/ads2gas_apple.pl"
-
-          if [ "$(show_darwin_sdk_major_version iphoneos)" -gt 8 ]; then
-            check_add_cflags -fembed-bitcode
-            check_add_asflags -fembed-bitcode
-            check_add_ldflags -fembed-bitcode
-          fi
-          ;;
-
-        linux*)
-          enable_feature linux
-          if enabled rvct; then
-            # Check if we have CodeSourcery GCC in PATH. Needed for
-            # libraries
-            which arm-none-linux-gnueabi-gcc 2>&- || \
-              die "Couldn't find CodeSourcery GCC from PATH"
-
-            # Use armcc as a linker to enable translation of
-            # some gcc specific options such as -lm and -lpthread.
-            LD="armcc --translate_gcc"
-
-            # create configuration file (uses path to CodeSourcery GCC)
-            armcc --arm_linux_configure --arm_linux_config_file=arm_linux.cfg
-
-            add_cflags --arm_linux_paths --arm_linux_config_file=arm_linux.cfg
-            add_asflags --no_hide_all --apcs=/interwork
-            add_ldflags --arm_linux_paths --arm_linux_config_file=arm_linux.cfg
-            enabled pic && add_cflags --apcs=/fpic
-            enabled pic && add_asflags --apcs=/fpic
-            enabled shared && add_cflags --shared
-          fi
-          ;;
-      esac
-      ;;
-    mips*)
-      link_with_cc=gcc
-      setup_gnu_toolchain
-      tune_cflags="-mtune="
-      if enabled dspr2; then
-        check_add_cflags -mips32r2 -mdspr2
-      fi
-
-      if enabled runtime_cpu_detect; then
-        disable_feature runtime_cpu_detect
-      fi
-
-      if [ -n "${tune_cpu}" ]; then
-        case ${tune_cpu} in
-          p5600)
-            check_add_cflags -mips32r5 -mload-store-pairs
-            check_add_cflags -msched-weight -mhard-float -mfp64
-            check_add_asflags -mips32r5 -mhard-float -mfp64
-            check_add_ldflags -mfp64
-            ;;
-          i6400|p6600)
-            check_add_cflags -mips64r6 -mabi=64 -msched-weight
-            check_add_cflags  -mload-store-pairs -mhard-float -mfp64
-            check_add_asflags -mips64r6 -mabi=64 -mhard-float -mfp64
-            check_add_ldflags -mips64r6 -mabi=64 -mfp64
-            ;;
-        esac
-
-        if enabled msa; then
-          add_cflags -mmsa
-          add_asflags -mmsa
-          add_ldflags -mmsa
-        fi
-      fi
-
-      check_add_cflags -march=${tgt_isa}
-      check_add_asflags -march=${tgt_isa}
-      check_add_asflags -KPIC
-      ;;
-    x86*)
-      case  ${tgt_os} in
-        win*)
-          enabled gcc && add_cflags -fno-common
-          ;;
-        solaris*)
-          CC=${CC:-${CROSS}gcc}
-          CXX=${CXX:-${CROSS}g++}
-          LD=${LD:-${CROSS}gcc}
-          CROSS=${CROSS-g}
-          ;;
-        os2)
-          disable_feature pic
-          AS=${AS:-nasm}
-          add_ldflags -Zhigh-mem
-          ;;
-      esac
-
-      AS="${alt_as:-${AS:-auto}}"
-      case  ${tgt_cc} in
-        icc*)
-          CC=${CC:-icc}
-          LD=${LD:-icc}
-          setup_gnu_toolchain
-          add_cflags -use-msasm  # remove -use-msasm too?
-          # add -no-intel-extensions to suppress warning #10237
-          # refer to http://software.intel.com/en-us/forums/topic/280199
-          add_ldflags -i-static -no-intel-extensions
-          enabled x86_64 && add_cflags -ipo -static -O3 -no-prec-div
-          enabled x86_64 && AR=xiar
-          case ${tune_cpu} in
-            atom*)
-              tune_cflags="-x"
-              tune_cpu="SSE3_ATOM"
-              ;;
-            *)
-              tune_cflags="-march="
-              ;;
-          esac
-          ;;
-        gcc*)
-          link_with_cc=gcc
-          tune_cflags="-march="
-          setup_gnu_toolchain
-          #for 32 bit x86 builds, -O3 did not turn on this flag
-          enabled optimizations && disabled gprof && check_add_cflags -fomit-frame-pointer
-          ;;
-        vs*)
-          # When building with Microsoft Visual Studio the assembler is
-          # invoked directly. Checking at configure time is unnecessary.
-          # Skip the check by setting AS arbitrarily
-          AS=msvs
-          msvs_arch_dir=x86-msvs
-          vc_version=${tgt_cc##vs}
-          ;;
-      esac
-
-      bits=32
-      enabled x86_64 && bits=64
-      check_cpp <<EOF && bits=x32
-#if !defined(__ILP32__) || !defined(__x86_64__)
-#error "not x32"
-#endif
-EOF
-      case ${tgt_cc} in
-        gcc*)
-          add_cflags -m${bits}
-          add_ldflags -m${bits}
-          ;;
-      esac
-
-      soft_enable runtime_cpu_detect
-      # We can't use 'check_cflags' until the compiler is configured and CC is
-      # populated.
-      for ext in ${ARCH_EXT_LIST_X86}; do
-        # disable higher order extensions to simplify asm dependencies
-        if [ "$disable_exts" = "yes" ]; then
-          if ! disabled $ext; then
-            RTCD_OPTIONS="${RTCD_OPTIONS}--disable-${ext} "
-            disable_feature $ext
-          fi
-        elif disabled $ext; then
-          disable_exts="yes"
-        else
-          # use the shortened version for the flag: sse4_1 -> sse4
-          check_gcc_machine_option ${ext%_*} $ext
-        fi
-      done
-
-      if enabled external_build; then
-        log_echo "  skipping assembler detection"
-      else
-        case "${AS}" in
-          auto|"")
-            which nasm >/dev/null 2>&1 && AS=nasm
-            which yasm >/dev/null 2>&1 && AS=yasm
-            if [ "${AS}" = nasm ] ; then
-              # Apple ships version 0.98 of nasm through at least Xcode 6. Revisit
-              # this check if they start shipping a compatible version.
-              apple=`nasm -v | grep "Apple"`
-              [ -n "${apple}" ] \
-                && echo "Unsupported version of nasm: ${apple}" \
-                && AS=""
-            fi
-            [ "${AS}" = auto ] || [ -z "${AS}" ] \
-              && die "Neither yasm nor nasm have been found." \
-                     "See the prerequisites section in the README for more info."
-            ;;
-        esac
-        log_echo "  using $AS"
-      fi
-      [ "${AS##*/}" = nasm ] && add_asflags -Ox
-      AS_SFX=.asm
-      case  ${tgt_os} in
-        win32)
-          add_asflags -f win32
-          enabled debug && add_asflags -g cv8
-          EXE_SFX=.exe
-          ;;
-        win64)
-          add_asflags -f x64
-          enabled debug && add_asflags -g cv8
-          EXE_SFX=.exe
-          ;;
-        linux*|solaris*|android*)
-          add_asflags -f elf${bits}
-          enabled debug && [ "${AS}" = yasm ] && add_asflags -g dwarf2
-          enabled debug && [ "${AS}" = nasm ] && add_asflags -g
-          [ "${AS##*/}" = nasm ] && check_asm_align
-          ;;
-        darwin*)
-          add_asflags -f macho${bits}
-          enabled x86 && darwin_arch="-arch i386" || darwin_arch="-arch x86_64"
-          add_cflags  ${darwin_arch}
-          add_ldflags ${darwin_arch}
-          # -mdynamic-no-pic is still a bit of voodoo -- it was required at
-          # one time, but does not seem to be now, and it breaks some of the
-          # code that still relies on inline assembly.
-          # enabled icc && ! enabled pic && add_cflags -fno-pic -mdynamic-no-pic
-          enabled icc && ! enabled pic && add_cflags -fno-pic
-          ;;
-        iphonesimulator)
-          add_asflags -f macho${bits}
-          enabled x86 && sim_arch="-arch i386" || sim_arch="-arch x86_64"
-          add_cflags  ${sim_arch}
-          add_ldflags ${sim_arch}
-
-          if [ "$(show_darwin_sdk_major_version iphonesimulator)" -gt 8 ]; then
-            # yasm v1.3.0 doesn't know what -fembed-bitcode means, so turning it
-            # on is pointless (unless building a C-only lib). Warn the user, but
-            # do nothing here.
-            log "Warning: Bitcode embed disabled for simulator targets."
-          fi
-          ;;
-        os2)
-          add_asflags -f aout
-          enabled debug && add_asflags -g
-          EXE_SFX=.exe
-          ;;
-        *)
-          log "Warning: Unknown os $tgt_os while setting up $AS flags"
-          ;;
-      esac
-      ;;
-    *-gcc|generic-gnu)
-      link_with_cc=gcc
-      enable_feature gcc
-      setup_gnu_toolchain
-      ;;
-  esac
-
-  # Try to enable CPU specific tuning
-  if [ -n "${tune_cpu}" ]; then
-    if [ -n "${tune_cflags}" ]; then
-      check_add_cflags ${tune_cflags}${tune_cpu} || \
-        die "Requested CPU '${tune_cpu}' not supported by compiler"
-    fi
-    if [ -n "${tune_asflags}" ]; then
-      check_add_asflags ${tune_asflags}${tune_cpu} || \
-        die "Requested CPU '${tune_cpu}' not supported by assembler"
-    fi
-    if [ -z "${tune_cflags}${tune_asflags}" ]; then
-      log_echo "Warning: CPU tuning not supported by this toolchain"
-    fi
-  fi
-
-  if enabled debug; then
-    check_add_cflags -g && check_add_ldflags -g
-  else
-    check_add_cflags -DNDEBUG
-  fi
-
-  enabled gprof && check_add_cflags -pg && check_add_ldflags -pg
-  enabled gcov &&
-    check_add_cflags -fprofile-arcs -ftest-coverage &&
-    check_add_ldflags -fprofile-arcs -ftest-coverage
-
-  if enabled optimizations; then
-    if enabled rvct; then
-      enabled small && check_add_cflags -Ospace || check_add_cflags -Otime
-    else
-      enabled small && check_add_cflags -O2 ||  check_add_cflags -O3
-    fi
-  fi
-
-  # Position Independent Code (PIC) support, for building relocatable
-  # shared objects
-  enabled gcc && enabled pic && check_add_cflags -fPIC
-
-  # Work around longjmp interception on glibc >= 2.11, to improve binary
-  # compatibility. See http://code.google.com/p/webm/issues/detail?id=166
-  enabled linux && check_add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0
-
-  # Check for strip utility variant
-  ${STRIP} -V 2>/dev/null | grep GNU >/dev/null && enable_feature gnu_strip
-
-  # Try to determine target endianness
-  check_cc <<EOF
-unsigned int e = 'O'<<24 | '2'<<16 | 'B'<<8 | 'E';
-EOF
-    [ -f "${TMP_O}" ] && od -A n -t x1 "${TMP_O}" | tr -d '\n' |
-        grep '4f *32 *42 *45' >/dev/null 2>&1 && enable_feature big_endian
-
-    # Try to find which inline keywords are supported
-    check_cc <<EOF && INLINE="inline"
-static inline function() {}
-EOF
-
-  # Almost every platform uses pthreads.
-  if enabled multithread; then
-    case ${toolchain} in
-      *-win*-vs*)
-        ;;
-      *-android-gcc)
-        ;;
-      *)
-        check_header pthread.h && add_extralibs -lpthread
-        ;;
-    esac
-  fi
-
-  # only for MIPS platforms
-  case ${toolchain} in
-    mips*)
-      if enabled big_endian; then
-        if enabled dspr2; then
-          echo "dspr2 optimizations are available only for little endian platforms"
-          disable_feature dspr2
-        fi
-        if enabled msa; then
-          echo "msa optimizations are available only for little endian platforms"
-          disable_feature msa
-        fi
-      fi
-      ;;
-  esac
-
-  # glibc needs these
-  if enabled linux || [ "$toolchain" = "generic-gnu" ]; then
-    add_cflags -D_LARGEFILE_SOURCE
-    add_cflags -D_FILE_OFFSET_BITS=64
-  fi
-}
-
-process_toolchain() {
-  process_common_toolchain
-}
-
-print_config_mk() {
-  saved_prefix="${prefix}"
-  prefix=$1
-  makefile=$2
-  shift 2
-  for cfg; do
-    if enabled $cfg; then
-      upname="`toupper $cfg`"
-      echo "${prefix}_${upname}=yes" >> $makefile
-    fi
-  done
-  prefix="${saved_prefix}"
-}
-
-print_config_h() {
-  saved_prefix="${prefix}"
-  prefix=$1
-  header=$2
-  shift 2
-  for cfg; do
-    upname="`toupper $cfg`"
-    if enabled $cfg; then
-      echo "#define ${prefix}_${upname} 1" >> $header
-    else
-      echo "#define ${prefix}_${upname} 0" >> $header
-    fi
-  done
-  prefix="${saved_prefix}"
-}
-
-print_config_vars_h() {
-  header=$1
-  shift
-  while [ $# -gt 0 ]; do
-    upname="`toupper $1`"
-    echo "#define ${upname} $2" >> $header
-    shift 2
-  done
-}
-
-print_webm_license() {
-  saved_prefix="${prefix}"
-  destination=$1
-  prefix="$2"
-  suffix="$3"
-  shift 3
-  cat <<EOF > ${destination}
-${prefix} Copyright (c) 2016, Alliance for Open Media. All rights reserved.${suffix}
-${prefix} ${suffix}
-${prefix} This source code is subject to the terms of the BSD 2 Clause License and${suffix}
-${prefix} the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License${suffix}
-${prefix} was not distributed with this source code in the LICENSE file, you can${suffix}
-${prefix} obtain it at www.aomedia.org/license/software. If the Alliance for Open${suffix}
-${prefix} Media Patent License 1.0 was not distributed with this source code in the${suffix}
-${prefix} PATENTS file, you can obtain it at www.aomedia.org/license/patent.${suffix}
-EOF
-  prefix="${saved_prefix}"
-}
-
-process_targets() {
-  true;
-}
-
-process_detect() {
-  true;
-}
-
-enable_feature logging
-logfile="config.log"
-self=$0
-process() {
-  cmdline_args="$@"
-  process_cmdline "$@"
-  if enabled child; then
-    echo "# ${self} $@" >> ${logfile}
-  else
-    echo "# ${self} $@" > ${logfile}
-  fi
-  post_process_common_cmdline
-  post_process_cmdline
-  process_toolchain
-  process_detect
-  process_targets
-
-  OOT_INSTALLS="${OOT_INSTALLS}"
-  if enabled source_path_used; then
-  # Prepare the PWD for building.
-  for f in ${OOT_INSTALLS}; do
-    install -D "${source_path}/$f" "$f"
-  done
-  fi
-  cp "${source_path}/build/make/Makefile" .
-
-  clean_temp_files
-  true
-}
diff --git a/third_party/aom/build/make/gen_asm_deps.sh b/third_party/aom/build/make/gen_asm_deps.sh
deleted file mode 100755
index c867cc2bf..000000000
--- a/third_party/aom/build/make/gen_asm_deps.sh
+++ /dev/null
@@ -1,65 +0,0 @@
-#!/bin/sh
-##
-## Copyright (c) 2016, 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.
-##
-
-
-self=$0
-show_help() {
-    echo "usage: $self [options] <srcfile>"
-    echo
-    echo "Generate Makefile dependency information from assembly code source"
-    echo
-    exit 1
-}
-die_unknown(){
-    echo "Unknown option \"$1\"."
-    echo "See $0 --help for available options."
-    exit 1
-}
-for opt do
-    optval="${opt#*=}"
-    case "$opt" in
-    --build-pfx=*) pfx="${optval}"
-    ;;
-    --depfile=*) out="${optval}"
-    ;;
-    -I*) raw_inc_paths="${raw_inc_paths} ${opt}"
-         inc_path="${inc_path} ${opt#-I}"
-    ;;
-    -h|--help) show_help
-    ;;
-    *) [ -f "$opt" ] && srcfile="$opt"
-    ;;
-    esac
-done
-
-[ -n "$srcfile" ] || show_help
-sfx=${sfx:-asm}
-includes=$(LC_ALL=C egrep -i "include +\"?[a-z0-9_/]+\.${sfx}" $srcfile |
-           perl -p -e "s;.*?([a-z0-9_/]+.${sfx}).*;\1;")
-#" restore editor state
-for inc in ${includes}; do
-    found_inc_path=
-    for idir in ${inc_path}; do
-        [ -f "${idir}/${inc}" ] && found_inc_path="${idir}" && break
-    done
-    if [ -f `dirname $srcfile`/$inc ]; then
-        # Handle include files in the same directory as the source
-        $self --build-pfx=$pfx --depfile=$out ${raw_inc_paths} `dirname $srcfile`/$inc
-    elif [ -n "${found_inc_path}" ]; then
-        # Handle include files on the include path
-        $self --build-pfx=$pfx --depfile=$out ${raw_inc_paths} "${found_inc_path}/$inc"
-    else
-        # Handle generated includes in the build root (which may not exist yet)
-        echo ${out} ${out%d}o: "${pfx}${inc}"
-    fi
-done
-echo ${out} ${out%d}o: $srcfile
diff --git a/third_party/aom/build/make/gen_msvs_def.sh b/third_party/aom/build/make/gen_msvs_def.sh
deleted file mode 100755
index dbb2674ac..000000000
--- a/third_party/aom/build/make/gen_msvs_def.sh
+++ /dev/null
@@ -1,82 +0,0 @@
-#!/bin/bash
-## Copyright (c) 2016, 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.
-##
-
-self=$0
-self_basename=${self##*/}
-EOL=$'\n'
-
-show_help() {
-    cat <<EOF
-Usage: ${self_basename} [options] file1 [file2 ...]
-
-This script generates a MSVC module definition file containing a list of symbols
-to export from a DLL. Source files are technically bash scripts (and thus may
-use #comment syntax) but in general, take the form of a list of symbols:
-
-  <kind> symbol1 [symbol2, symbol3, ...]
-
-where <kind> is either 'text' or 'data'
-
-
-Options:
-    --help                      Print this message
-    --out=filename              Write output to a file [stdout]
-    --name=project_name         Name of the library (required)
-EOF
-    exit 1
-}
-
-die() {
-    echo "${self_basename}: $@"
-    exit 1
-}
-
-die_unknown(){
-    echo "Unknown option \"$1\"."
-    echo "See ${self_basename} --help for available options."
-    exit 1
-}
-
-text() {
-    for sym in "$@"; do
-        echo "  $sym" >> ${outfile}
-    done
-}
-
-data() {
-    for sym in "$@"; do
-        printf "  %-40s DATA\n" "$sym" >> ${outfile}
-    done
-}
-
-# Process command line
-for opt in "$@"; do
-    optval="${opt#*=}"
-    case "$opt" in
-    --help|-h) show_help
-    ;;
-    --out=*) outfile="$optval"
-    ;;
-    --name=*) name="${optval}"
-    ;;
-     -*) die_unknown $opt
-    ;;
-    *) file_list[${#file_list[@]}]="$opt"
-    esac
-done
-outfile=${outfile:-/dev/stdout}
-[ -n "$name" ] || die "Library name (--name) must be specified!"
-
-echo "LIBRARY ${name}" > ${outfile}
-echo "EXPORTS" >> ${outfile}
-for f in "${file_list[@]}"; do
-    . $f
-done
diff --git a/third_party/aom/build/make/gen_msvs_sln.sh b/third_party/aom/build/make/gen_msvs_sln.sh
deleted file mode 100755
index 268a81706..000000000
--- a/third_party/aom/build/make/gen_msvs_sln.sh
+++ /dev/null
@@ -1,257 +0,0 @@
-#!/bin/bash
-## Copyright (c) 2016, 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.
-##
-
-
-self=$0
-self_basename=${self##*/}
-EOL=$'\n'
-EOLDOS=$'\r'
-
-show_help() {
-    cat <<EOF
-Usage: ${self_basename} [options] file1 [file2 ...]
-
-This script generates a Visual Studio solution file from a list of project
-files.
-
-Options:
-    --help                      Print this message
-    --out=outfile               Redirect output to a file
-    --ver=version               Version (12,14,15) of visual studio to generate for
-    --target=isa-os-cc          Target specifier
-EOF
-    exit 1
-}
-
-die() {
-    echo "${self_basename}: $@" >&2
-    [ -f "${outfile}" ] && rm -f ${outfile}{,.mk}
-    exit 1
-}
-
-die_unknown(){
-    echo "Unknown option \"$1\"." >&2
-    echo "See ${self_basename} --help for available options." >&2
-    [ -f "${outfile}" ] && rm -f ${outfile}{,.mk}
-    exit 1
-}
-
-indent1=$'\t'
-indent=""
-indent_push() {
-    indent="${indent}${indent1}"
-}
-indent_pop() {
-    indent="${indent%${indent1}}"
-}
-
-parse_project() {
-    local file=$1
-    local name=`grep RootNamespace "$file" | sed 's,.*<.*>\(.*\)</.*>.*,\1,'`
-    local guid=`grep ProjectGuid "$file" | sed 's,.*<.*>\(.*\)</.*>.*,\1,'`
-
-    # save the project GUID to a varaible, normalizing to the basename of the
-    # vcxproj file without the extension
-    local var
-    var=${file##*/}
-    var=${var%%.${sfx}}
-    eval "${var}_file=\"$1\""
-    eval "${var}_name=$name"
-    eval "${var}_guid=$guid"
-
-    cur_config_list=`grep -B1 'Label="Configuration"' $file |
-        grep Condition | cut -d\' -f4`
-    new_config_list=$(for i in $config_list $cur_config_list; do
-        echo $i
-    done | sort | uniq)
-    if [ "$config_list" != "" ] && [ "$config_list" != "$new_config_list" ]; then
-        mixed_platforms=1
-    fi
-    config_list="$new_config_list"
-    eval "${var}_config_list=\"$cur_config_list\""
-    proj_list="${proj_list} ${var}"
-}
-
-process_project() {
-    eval "local file=\${$1_file}"
-    eval "local name=\${$1_name}"
-    eval "local guid=\${$1_guid}"
-
-    # save the project GUID to a varaible, normalizing to the basename of the
-    # vcproj file without the extension
-    local var
-    var=${file##*/}
-    var=${var%%.${sfx}}
-    eval "${var}_guid=$guid"
-
-    echo "Project(\"{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}\") = \"$name\", \"$file\", \"$guid\""
-    echo "EndProject"
-}
-
-process_global() {
-    echo "Global"
-    indent_push
-
-    #
-    # Solution Configuration Platforms
-    #
-    echo "${indent}GlobalSection(SolutionConfigurationPlatforms) = preSolution"
-    indent_push
-    IFS_bak=${IFS}
-    IFS=$'\r'$'\n'
-    if [ "$mixed_platforms" != "" ]; then
-        config_list="
-Release|Mixed Platforms
-Debug|Mixed Platforms"
-    fi
-    for config in ${config_list}; do
-        echo "${indent}$config = $config"
-    done
-    IFS=${IFS_bak}
-    indent_pop
-    echo "${indent}EndGlobalSection"
-
-    #
-    # Project Configuration Platforms
-    #
-    echo "${indent}GlobalSection(ProjectConfigurationPlatforms) = postSolution"
-    indent_push
-    for proj in ${proj_list}; do
-        eval "local proj_guid=\${${proj}_guid}"
-        eval "local proj_config_list=\${${proj}_config_list}"
-        IFS=$'\r'$'\n'
-        for config in ${proj_config_list}; do
-            if [ "$mixed_platforms" != "" ]; then
-                local c=${config%%|*}
-                echo "${indent}${proj_guid}.${c}|Mixed Platforms.ActiveCfg = ${config}"
-                echo "${indent}${proj_guid}.${c}|Mixed Platforms.Build.0 = ${config}"
-            else
-                echo "${indent}${proj_guid}.${config}.ActiveCfg = ${config}"
-                echo "${indent}${proj_guid}.${config}.Build.0 = ${config}"
-            fi
-
-        done
-        IFS=${IFS_bak}
-    done
-    indent_pop
-    echo "${indent}EndGlobalSection"
-
-    #
-    # Solution Properties
-    #
-    echo "${indent}GlobalSection(SolutionProperties) = preSolution"
-    indent_push
-    echo "${indent}HideSolutionNode = FALSE"
-    indent_pop
-    echo "${indent}EndGlobalSection"
-
-    indent_pop
-    echo "EndGlobal"
-}
-
-process_makefile() {
-    IFS_bak=${IFS}
-    IFS=$'\r'$'\n'
-    local TAB=$'\t'
-    cat <<EOF
-MSBUILD_TOOL := msbuild.exe
-found_devenv := \$(shell which \$(MSBUILD_TOOL) >/dev/null 2>&1 && echo yes)
-.nodevenv.once:
-${TAB}@echo "  * \$(MSBUILD_TOOL) not found in path."
-${TAB}@echo "  * "
-${TAB}@echo "  * You will have to build all configurations manually using the"
-${TAB}@echo "  * Visual Studio IDE. To allow make to build them automatically,"
-${TAB}@echo "  * add the Common7/IDE directory of your Visual Studio"
-${TAB}@echo "  * installation to your path, eg:"
-${TAB}@echo "  *   C:\Program Files\Microsoft Visual Studio 12.0\Common7\IDE"
-${TAB}@echo "  * "
-${TAB}@touch \$@
-CLEAN-OBJS += \$(if \$(found_devenv),,.nodevenv.once)
-
-EOF
-
-    for sln_config in ${config_list}; do
-        local config=${sln_config%%|*}
-        local platform=${sln_config##*|}
-        local nows_sln_config=`echo $sln_config | sed -e 's/[^a-zA-Z0-9]/_/g'`
-        cat <<EOF
-BUILD_TARGETS += \$(if \$(NO_LAUNCH_DEVENV),,$nows_sln_config)
-clean::
-${TAB}rm -rf "$platform"/"$config"
-.PHONY: $nows_sln_config
-ifneq (\$(found_devenv),)
-$nows_sln_config: $outfile
-${TAB}\$(MSBUILD_TOOL) $outfile -m -t:Build \\
-${TAB}${TAB}-p:Configuration="$config" -p:Platform="$platform"
-else
-$nows_sln_config: $outfile .nodevenv.once
-${TAB}@echo "  * Skipping build of $sln_config (\$(MSBUILD_TOOL) not in path)."
-${TAB}@echo "  * "
-endif
-
-EOF
-    done
-    IFS=${IFS_bak}
-}
-
-# Process command line
-outfile=/dev/stdout
-for opt in "$@"; do
-    optval="${opt#*=}"
-    case "$opt" in
-    --help|-h) show_help
-    ;;
-    --out=*) outfile="${optval}"; mkoutfile="${optval}".mk
-    ;;
-    --dep=*) eval "${optval%%:*}_deps=\"\${${optval%%:*}_deps} ${optval##*:}\""
-    ;;
-    --ver=*) vs_ver="$optval"
-             case $optval in
-             12|14|15)
-             ;;
-             *) die Unrecognized Visual Studio Version in $opt
-             ;;
-             esac
-    ;;
-    --target=*) target="${optval}"
-    ;;
-    -*) die_unknown $opt
-    ;;
-    *) file_list[${#file_list[@]}]="$opt"
-    esac
-done
-outfile=${outfile:-/dev/stdout}
-mkoutfile=${mkoutfile:-/dev/stdout}
-case "${vs_ver:-12}" in
-    12) sln_vers="12.00"
-       sln_vers_str="Visual Studio 2013"
-    ;;
-    14) sln_vers="12.00"
-       sln_vers_str="Visual Studio 2015"
-    ;;
-    15) sln_vers="12.00"
-       sln_vers_str="Visual Studio 2017"
-    ;;
-esac
-sfx=vcxproj
-
-for f in "${file_list[@]}"; do
-    parse_project $f
-done
-cat  >${outfile} <<EOF
-Microsoft Visual Studio Solution File, Format Version $sln_vers${EOLDOS}
-# $sln_vers_str${EOLDOS}
-EOF
-for proj in ${proj_list}; do
-    process_project $proj >>${outfile}
-done
-process_global >>${outfile}
-process_makefile >${mkoutfile}
diff --git a/third_party/aom/build/make/gen_msvs_vcxproj.sh b/third_party/aom/build/make/gen_msvs_vcxproj.sh
deleted file mode 100755
index a119b07aa..000000000
--- a/third_party/aom/build/make/gen_msvs_vcxproj.sh
+++ /dev/null
@@ -1,477 +0,0 @@
-#!/bin/bash
-## Copyright (c) 2016, 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.
-##
-
-self=$0
-self_basename=${self##*/}
-self_dirname=$(dirname "$0")
-
-. "$self_dirname/msvs_common.sh"|| exit 127
-
-show_help() {
-    cat <<EOF
-Usage: ${self_basename} --name=projname [options] file1 [file2 ...]
-
-This script generates a Visual Studio project file from a list of source
-code files.
-
-Options:
-    --help                      Print this message
-    --exe                       Generate a project for building an Application
-    --lib                       Generate a project for creating a static library
-    --dll                       Generate a project for creating a dll
-    --static-crt                Use the static C runtime (/MT)
-    --enable-werror             Treat warnings as errors (/WX)
-    --target=isa-os-cc          Target specifier (required)
-    --out=filename              Write output to a file [stdout]
-    --name=project_name         Name of the project (required)
-    --proj-guid=GUID            GUID to use for the project
-    --module-def=filename       File containing export definitions (for DLLs)
-    --ver=version               Version (12,14,15) of visual studio to generate for
-    --src-path-bare=dir         Path to root of source tree
-    -Ipath/to/include           Additional include directories
-    -DFLAG[=value]              Preprocessor macros to define
-    -Lpath/to/lib               Additional library search paths
-    -llibname                   Library to link against
-EOF
-    exit 1
-}
-
-tag_content() {
-    local tag=$1
-    local content=$2
-    shift
-    shift
-    if [ $# -ne 0 ]; then
-        echo "${indent}<${tag}"
-        indent_push
-        tag_attributes "$@"
-        echo "${indent}>${content}</${tag}>"
-        indent_pop
-    else
-        echo "${indent}<${tag}>${content}</${tag}>"
-    fi
-}
-
-generate_filter() {
-    local name=$1
-    local pats=$2
-    local file_list_sz
-    local i
-    local f
-    local saveIFS="$IFS"
-    local pack
-    echo "generating filter '$name' from ${#file_list[@]} files" >&2
-    IFS=*
-
-    file_list_sz=${#file_list[@]}
-    for i in ${!file_list[@]}; do
-        f=${file_list[i]}
-        for pat in ${pats//;/$IFS}; do
-            if [ "${f##*.}" == "$pat" ]; then
-                unset file_list[i]
-
-                objf=$(echo ${f%.*}.obj \
-                       | sed -e "s,$src_path_bare,," \
-                             -e 's/^[\./]\+//g' -e 's,[:/ ],_,g')
-
-                if ([ "$pat" == "asm" ] || [ "$pat" == "s" ]) && $asm_use_custom_step; then
-                    # Avoid object file name collisions, i.e. aom_config.c and
-                    # aom_config.asm produce the same object file without
-                    # this additional suffix.
-                    objf=${objf%.obj}_asm.obj
-                    open_tag CustomBuild \
-                        Include="$f"
-                    for plat in "${platforms[@]}"; do
-                        for cfg in Debug Release; do
-                            tag_content Message "Assembling %(Filename)%(Extension)" \
-                                Condition="'\$(Configuration)|\$(Platform)'=='$cfg|$plat'"
-                            tag_content Command "$(eval echo \$asm_${cfg}_cmdline) -o \$(IntDir)$objf" \
-                                Condition="'\$(Configuration)|\$(Platform)'=='$cfg|$plat'"
-                            tag_content Outputs "\$(IntDir)$objf" \
-                                Condition="'\$(Configuration)|\$(Platform)'=='$cfg|$plat'"
-                        done
-                    done
-                    close_tag CustomBuild
-                elif [ "$pat" == "c" ] || \
-                     [ "$pat" == "cc" ] || [ "$pat" == "cpp" ]; then
-                    open_tag ClCompile \
-                        Include="$f"
-                    # Separate file names with Condition?
-                    tag_content ObjectFileName "\$(IntDir)$objf"
-                    # Check for AVX and turn it on to avoid warnings.
-                    if [[ $f =~ avx.?\.c$ ]]; then
-                        tag_content AdditionalOptions "/arch:AVX"
-                    fi
-                    close_tag ClCompile
-                elif [ "$pat" == "h" ] ; then
-                    tag ClInclude \
-                        Include="$f"
-                elif [ "$pat" == "vcxproj" ] ; then
-                    open_tag ProjectReference \
-                        Include="$f"
-                    depguid=`grep ProjectGuid "$f" | sed 's,.*<.*>\(.*\)</.*>.*,\1,'`
-                    tag_content Project "$depguid"
-                    tag_content ReferenceOutputAssembly false
-                    close_tag ProjectReference
-                else
-                    tag None \
-                        Include="$f"
-                fi
-
-                break
-            fi
-        done
-    done
-
-    IFS="$saveIFS"
-}
-
-# Process command line
-unset target
-for opt in "$@"; do
-    optval="${opt#*=}"
-    case "$opt" in
-        --help|-h) show_help
-        ;;
-        --target=*) target="${optval}"
-        ;;
-        --out=*) outfile="$optval"
-        ;;
-        --name=*) name="${optval}"
-        ;;
-        --proj-guid=*) guid="${optval}"
-        ;;
-        --module-def=*) module_def="${optval}"
-        ;;
-        --exe) proj_kind="exe"
-        ;;
-        --dll) proj_kind="dll"
-        ;;
-        --lib) proj_kind="lib"
-        ;;
-        --src-path-bare=*)
-            src_path_bare=$(fix_path "$optval")
-            src_path_bare=${src_path_bare%/}
-        ;;
-        --static-crt) use_static_runtime=true
-        ;;
-        --enable-werror) werror=true
-        ;;
-        --ver=*)
-            vs_ver="$optval"
-            case "$optval" in
-                12|14|15)
-                ;;
-                *) die Unrecognized Visual Studio Version in $opt
-                ;;
-            esac
-        ;;
-        -I*)
-            opt=${opt##-I}
-            opt=$(fix_path "$opt")
-            opt="${opt%/}"
-            incs="${incs}${incs:+;}&quot;${opt}&quot;"
-            yasmincs="${yasmincs} -I&quot;${opt}&quot;"
-        ;;
-        -D*) defines="${defines}${defines:+;}${opt##-D}"
-        ;;
-        -L*) # fudge . to $(OutDir)
-            if [ "${opt##-L}" == "." ]; then
-                libdirs="${libdirs}${libdirs:+;}&quot;\$(OutDir)&quot;"
-            else
-                 # Also try directories for this platform/configuration
-                 opt=${opt##-L}
-                 opt=$(fix_path "$opt")
-                 libdirs="${libdirs}${libdirs:+;}&quot;${opt}&quot;"
-                 libdirs="${libdirs}${libdirs:+;}&quot;${opt}/\$(PlatformName)/\$(Configuration)&quot;"
-                 libdirs="${libdirs}${libdirs:+;}&quot;${opt}/\$(PlatformName)&quot;"
-            fi
-        ;;
-        -l*) libs="${libs}${libs:+ }${opt##-l}.lib"
-        ;;
-        -*) die_unknown $opt
-        ;;
-        *)
-            # The paths in file_list are fixed outside of the loop.
-            file_list[${#file_list[@]}]="$opt"
-            case "$opt" in
-                 *.asm|*.s) uses_asm=true
-                 ;;
-            esac
-        ;;
-    esac
-done
-
-# Make one call to fix_path for file_list to improve performance.
-fix_file_list file_list
-
-outfile=${outfile:-/dev/stdout}
-guid=${guid:-`generate_uuid`}
-asm_use_custom_step=false
-uses_asm=${uses_asm:-false}
-case "${vs_ver:-12}" in
-    12|14|15)
-       asm_use_custom_step=$uses_asm
-    ;;
-esac
-
-[ -n "$name" ] || die "Project name (--name) must be specified!"
-[ -n "$target" ] || die "Target (--target) must be specified!"
-
-if ${use_static_runtime:-false}; then
-    release_runtime=MultiThreaded
-    debug_runtime=MultiThreadedDebug
-    lib_sfx=mt
-else
-    release_runtime=MultiThreadedDLL
-    debug_runtime=MultiThreadedDebugDLL
-    lib_sfx=md
-fi
-
-# Calculate debug lib names: If a lib ends in ${lib_sfx}.lib, then rename
-# it to ${lib_sfx}d.lib. This precludes linking to release libs from a
-# debug exe, so this may need to be refactored later.
-for lib in ${libs}; do
-    if [ "$lib" != "${lib%${lib_sfx}.lib}" ]; then
-        lib=${lib%.lib}d.lib
-    fi
-    debug_libs="${debug_libs}${debug_libs:+ }${lib}"
-done
-debug_libs=${debug_libs// /;}
-libs=${libs// /;}
-
-
-# List of all platforms supported for this target
-case "$target" in
-    x86_64*)
-        platforms[0]="x64"
-        asm_Debug_cmdline="yasm -Xvc -g cv8 -f win64 ${yasmincs} &quot;%(FullPath)&quot;"
-        asm_Release_cmdline="yasm -Xvc -f win64 ${yasmincs} &quot;%(FullPath)&quot;"
-    ;;
-    x86*)
-        platforms[0]="Win32"
-        asm_Debug_cmdline="yasm -Xvc -g cv8 -f win32 ${yasmincs} &quot;%(FullPath)&quot;"
-        asm_Release_cmdline="yasm -Xvc -f win32 ${yasmincs} &quot;%(FullPath)&quot;"
-    ;;
-    arm*)
-        platforms[0]="ARM"
-        asm_Debug_cmdline="armasm -nologo -oldit &quot;%(FullPath)&quot;"
-        asm_Release_cmdline="armasm -nologo -oldit &quot;%(FullPath)&quot;"
-    ;;
-    *) die "Unsupported target $target!"
-    ;;
-esac
-
-generate_vcxproj() {
-    echo "<?xml version=\"1.0\" encoding=\"utf-8\"?>"
-    open_tag Project \
-        DefaultTargets="Build" \
-        ToolsVersion="4.0" \
-        xmlns="http://schemas.microsoft.com/developer/msbuild/2003" \
-
-    open_tag ItemGroup \
-        Label="ProjectConfigurations"
-    for plat in "${platforms[@]}"; do
-        for config in Debug Release; do
-            open_tag ProjectConfiguration \
-                Include="$config|$plat"
-            tag_content Configuration $config
-            tag_content Platform $plat
-            close_tag ProjectConfiguration
-        done
-    done
-    close_tag ItemGroup
-
-    open_tag PropertyGroup \
-        Label="Globals"
-        tag_content ProjectGuid "{${guid}}"
-        tag_content RootNamespace ${name}
-        tag_content Keyword ManagedCProj
-        if [ "${platforms[0]}" = "ARM" ]; then
-            tag_content AppContainerApplication true
-            # The application type can be one of "Windows Store",
-            # "Windows Phone" or "Windows Phone Silverlight". The
-            # actual value doesn't matter from the libaom point of view,
-            # since a static library built for one works on the others.
-            # The PlatformToolset field needs to be set in sync with this;
-            # for Windows Store and Windows Phone Silverlight it should be
-            # v120 while it should be v120_wp81 if the type is Windows Phone.
-            tag_content ApplicationType "Windows Store"
-            tag_content ApplicationTypeRevision 8.1
-        fi
-    close_tag PropertyGroup
-
-    tag Import \
-        Project="\$(VCTargetsPath)\\Microsoft.Cpp.Default.props"
-
-    for plat in "${platforms[@]}"; do
-        for config in Release Debug; do
-            open_tag PropertyGroup \
-                Condition="'\$(Configuration)|\$(Platform)'=='$config|$plat'" \
-                Label="Configuration"
-            if [ "$proj_kind" = "exe" ]; then
-                tag_content ConfigurationType Application
-            elif [ "$proj_kind" = "dll" ]; then
-                tag_content ConfigurationType DynamicLibrary
-            else
-                tag_content ConfigurationType StaticLibrary
-            fi
-            if [ "$vs_ver" = "12" ]; then
-                # Setting a PlatformToolset indicating windows phone isn't
-                # enough to build code for arm with MSVC 2013, one strictly
-                # has to enable AppContainerApplication as well.
-                tag_content PlatformToolset v120
-            fi
-            if [ "$vs_ver" = "14" ]; then
-                tag_content PlatformToolset v140
-            fi
-            if [ "$vs_ver" = "15" ]; then
-                tag_content PlatformToolset v141
-            fi
-            tag_content CharacterSet Unicode
-            if [ "$config" = "Release" ]; then
-                tag_content WholeProgramOptimization true
-            fi
-            close_tag PropertyGroup
-        done
-    done
-
-    tag Import \
-        Project="\$(VCTargetsPath)\\Microsoft.Cpp.props"
-
-    open_tag ImportGroup \
-        Label="PropertySheets"
-        tag Import \
-            Project="\$(UserRootDir)\\Microsoft.Cpp.\$(Platform).user.props" \
-            Condition="exists('\$(UserRootDir)\\Microsoft.Cpp.\$(Platform).user.props')" \
-            Label="LocalAppDataPlatform"
-    close_tag ImportGroup
-
-    tag PropertyGroup \
-        Label="UserMacros"
-
-    for plat in "${platforms[@]}"; do
-        plat_no_ws=`echo $plat | sed 's/[^A-Za-z0-9_]/_/g'`
-        for config in Debug Release; do
-            open_tag PropertyGroup \
-                Condition="'\$(Configuration)|\$(Platform)'=='$config|$plat'"
-            tag_content OutDir "\$(SolutionDir)$plat_no_ws\\\$(Configuration)\\"
-            tag_content IntDir "$plat_no_ws\\\$(Configuration)\\${name}\\"
-            if [ "$proj_kind" == "lib" ]; then
-              if [ "$config" == "Debug" ]; then
-                config_suffix=d
-              else
-                config_suffix=""
-              fi
-              tag_content TargetName "${name}${lib_sfx}${config_suffix}"
-            fi
-            close_tag PropertyGroup
-        done
-    done
-
-    for plat in "${platforms[@]}"; do
-        for config in Debug Release; do
-            open_tag ItemDefinitionGroup \
-                Condition="'\$(Configuration)|\$(Platform)'=='$config|$plat'"
-            if [ "$name" == "aom" ]; then
-                hostplat=$plat
-                if [ "$hostplat" == "ARM" ]; then
-                    hostplat=Win32
-                fi
-            fi
-            open_tag ClCompile
-            if [ "$config" = "Debug" ]; then
-                opt=Disabled
-                runtime=$debug_runtime
-                curlibs=$debug_libs
-                debug=_DEBUG
-            else
-                opt=MaxSpeed
-                runtime=$release_runtime
-                curlibs=$libs
-                tag_content FavorSizeOrSpeed Speed
-                debug=NDEBUG
-            fi
-            extradefines=";$defines"
-            tag_content Optimization $opt
-            tag_content AdditionalIncludeDirectories "$incs;%(AdditionalIncludeDirectories)"
-            tag_content PreprocessorDefinitions "WIN32;$debug;_CRT_SECURE_NO_WARNINGS;_CRT_SECURE_NO_DEPRECATE$extradefines;%(PreprocessorDefinitions)"
-            tag_content RuntimeLibrary $runtime
-            tag_content WarningLevel Level3
-            if ${werror:-false}; then
-                tag_content TreatWarningAsError true
-            fi
-            # We need to override the defaults for these settings
-            # if AppContainerApplication is set.
-            tag_content CompileAsWinRT false
-            tag_content PrecompiledHeader NotUsing
-            tag_content SDLCheck false
-            close_tag ClCompile
-            case "$proj_kind" in
-            exe)
-                open_tag Link
-                tag_content GenerateDebugInformation true
-                # Console is the default normally, but if
-                # AppContainerApplication is set, we need to override it.
-                tag_content SubSystem Console
-                close_tag Link
-                ;;
-            dll)
-                open_tag Link
-                tag_content GenerateDebugInformation true
-                tag_content ModuleDefinitionFile $module_def
-                close_tag Link
-                ;;
-            lib)
-                ;;
-            esac
-            close_tag ItemDefinitionGroup
-        done
-
-    done
-
-    open_tag ItemGroup
-    generate_filter "Source Files"   "c;cc;cpp;def;odl;idl;hpj;bat;asm;asmx;s"
-    close_tag ItemGroup
-    open_tag ItemGroup
-    generate_filter "Header Files"   "h;hm;inl;inc;xsd"
-    close_tag ItemGroup
-    open_tag ItemGroup
-    generate_filter "Build Files"    "mk"
-    close_tag ItemGroup
-    open_tag ItemGroup
-    generate_filter "References"     "vcxproj"
-    close_tag ItemGroup
-
-    tag Import \
-        Project="\$(VCTargetsPath)\\Microsoft.Cpp.targets"
-
-    open_tag ImportGroup \
-        Label="ExtensionTargets"
-    close_tag ImportGroup
-
-    close_tag Project
-
-    # This must be done from within the {} subshell
-    echo "Ignored files list (${#file_list[@]} items) is:" >&2
-    for f in "${file_list[@]}"; do
-        echo "    $f" >&2
-    done
-}
-
-# This regexp doesn't catch most of the strings in the vcxproj format,
-# since they're like <tag>path</tag> instead of <tag attr="path" />
-# as previously. It still seems to work ok despite this.
-generate_vcxproj |
-    sed  -e '/"/s;\([^ "]\)/;\1\\;g' |
-    sed  -e '/xmlns/s;\\;/;g' > ${outfile}
-
-exit
diff --git a/third_party/aom/build/make/iosbuild.sh b/third_party/aom/build/make/iosbuild.sh
index ca8214b62..75f0b1b08 100755
--- a/third_party/aom/build/make/iosbuild.sh
+++ b/third_party/aom/build/make/iosbuild.sh
@@ -56,6 +56,7 @@ build_target() {
 
   mkdir "${target}"
   cd "${target}"
+  # TODO(tomfinegan@google.com): switch to cmake.
   eval "${LIBAOM_SOURCE_DIR}/configure" --target="${target}" \
     ${CONFIGURE_ARGS} ${EXTRA_CONFIGURE_ARGS} ${target_specific_flags} \
     ${devnull}
diff --git a/third_party/aom/build/make/msvs_common.sh b/third_party/aom/build/make/msvs_common.sh
deleted file mode 100644
index 2df27df8d..000000000
--- a/third_party/aom/build/make/msvs_common.sh
+++ /dev/null
@@ -1,114 +0,0 @@
-#!/bin/bash
-## Copyright (c) 2016, Alliance for Open Media. All rights reserved
-##
-## This source code is subject to the terms of the BSD 2 Clause License and
-## the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
-## was not distributed with this source code in the LICENSE file, you can
-## obtain it at www.aomedia.org/license/software. If the Alliance for Open
-## Media Patent License 1.0 was not distributed with this source code in the
-## PATENTS file, you can obtain it at www.aomedia.org/license/patent.
-##
-
-if [ "$(uname -o 2>/dev/null)" = "Cygwin" ] \
-   && cygpath --help >/dev/null 2>&1; then
-    FIXPATH='cygpath -m'
-else
-    FIXPATH='echo_path'
-fi
-
-die() {
-    echo "${self_basename}: $@" >&2
-    exit 1
-}
-
-die_unknown(){
-    echo "Unknown option \"$1\"." >&2
-    echo "See ${self_basename} --help for available options." >&2
-    exit 1
-}
-
-echo_path() {
-    for path; do
-        echo "$path"
-    done
-}
-
-# Output one, possibly changed based on the system, path per line.
-fix_path() {
-    $FIXPATH "$@"
-}
-
-# Corrects the paths in file_list in one pass for efficiency.
-# $1 is the name of the array to be modified.
-fix_file_list() {
-    declare -n array_ref=$1
-    files=$(fix_path "${array_ref[@]}")
-    local IFS=$'\n'
-    array_ref=($files)
-}
-
-generate_uuid() {
-    local hex="0123456789ABCDEF"
-    local i
-    local uuid=""
-    local j
-    #93995380-89BD-4b04-88EB-625FBE52EBFB
-    for ((i=0; i<32; i++)); do
-        (( j = $RANDOM % 16 ))
-        uuid="${uuid}${hex:$j:1}"
-    done
-    echo "${uuid:0:8}-${uuid:8:4}-${uuid:12:4}-${uuid:16:4}-${uuid:20:12}"
-}
-
-indent1="    "
-indent=""
-indent_push() {
-    indent="${indent}${indent1}"
-}
-indent_pop() {
-    indent="${indent%${indent1}}"
-}
-
-tag_attributes() {
-    for opt in "$@"; do
-        optval="${opt#*=}"
-        [ -n "${optval}" ] ||
-            die "Missing attribute value in '$opt' while generating $tag tag"
-        echo "${indent}${opt%%=*}=\"${optval}\""
-    done
-}
-
-open_tag() {
-    local tag=$1
-    shift
-    if [ $# -ne 0 ]; then
-        echo "${indent}<${tag}"
-        indent_push
-        tag_attributes "$@"
-        echo "${indent}>"
-    else
-        echo "${indent}<${tag}>"
-        indent_push
-    fi
-}
-
-close_tag() {
-    local tag=$1
-    indent_pop
-    echo "${indent}</${tag}>"
-}
-
-tag() {
-    local tag=$1
-    shift
-    if [ $# -ne 0 ]; then
-        echo "${indent}<${tag}"
-        indent_push
-        tag_attributes "$@"
-        indent_pop
-        echo "${indent}/>"
-    else
-        echo "${indent}<${tag}/>"
-    fi
-}
-
diff --git a/third_party/aom/build/make/rtcd.pl b/third_party/aom/build/make/rtcd.pl
index 7add5a036..8d8be25c0 100755
--- a/third_party/aom/build/make/rtcd.pl
+++ b/third_party/aom/build/make/rtcd.pl
@@ -1,5 +1,14 @@
 #!/usr/bin/env perl
-
+##
+## 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.
+##
 no strict 'refs';
 use warnings;
 use Getopt::Long;
@@ -205,6 +214,7 @@ sub filter {
 sub common_top() {
   my $include_guard = uc($opts{sym})."_H_";
   print <<EOF;
+// This file is generated. Do not edit.
 #ifndef ${include_guard}
 #define ${include_guard}
 
@@ -279,15 +289,12 @@ sub arm() {
   # Assign the helper variable for each enabled extension
   foreach my $opt (@ALL_ARCHS) {
     my $opt_uc = uc $opt;
-    # Enable neon assembly based on HAVE_NEON logic instead of adding new
-    # HAVE_NEON_ASM logic
-    if ($opt eq 'neon_asm') { $opt_uc = 'NEON' }
     eval "\$have_${opt}=\"flags & HAS_${opt_uc}\"";
   }
 
   common_top;
   print <<EOF;
-#include "aom_config.h"
+#include "config/aom_config.h"
 
 #ifdef RTCD_C
 #include "aom_ports/arm.h"
@@ -310,10 +317,17 @@ EOF
 
 sub mips() {
   determine_indirection("c", @ALL_ARCHS);
+
+  # Assign the helper variable for each enabled extension
+  foreach my $opt (@ALL_ARCHS) {
+    my $opt_uc = uc $opt;
+    eval "\$have_${opt}=\"flags & HAS_${opt_uc}\"";
+  }
+
   common_top;
 
   print <<EOF;
-#include "aom_config.h"
+#include "config/aom_config.h"
 
 #ifdef RTCD_C
 static void setup_rtcd_internal(void)
@@ -333,11 +347,44 @@ EOF
   common_bottom;
 }
 
+sub ppc() {
+  determine_indirection("c", @ALL_ARCHS);
+
+  # Assign the helper variable for each enabled extension
+  foreach my $opt (@ALL_ARCHS) {
+    my $opt_uc = uc $opt;
+    eval "\$have_${opt}=\"flags & HAS_${opt_uc}\"";
+  }
+
+  common_top;
+
+  print <<EOF;
+#include "config/aom_config.h"
+
+#ifdef RTCD_C
+#include "aom_ports/ppc.h"
+static void setup_rtcd_internal(void)
+{
+  int flags = ppc_simd_caps();
+
+  (void)flags;
+
+EOF
+
+  set_function_pointers("c", @ALL_ARCHS);
+
+  print <<EOF;
+}
+#endif
+EOF
+  common_bottom;
+}
+
 sub unoptimized() {
   determine_indirection "c";
   common_top;
   print <<EOF;
-#include "aom_config.h"
+#include "config/aom_config.h"
 
 #ifdef RTCD_C
 static void setup_rtcd_internal(void)
@@ -359,10 +406,10 @@ EOF
 
 &require("c");
 if ($opts{arch} eq 'x86') {
-  @ALL_ARCHS = filter(qw/mmx sse sse2 sse3 ssse3 sse4_1 avx avx2/);
+  @ALL_ARCHS = filter(qw/mmx sse sse2 sse3 ssse3 sse4_1 sse4_2 avx avx2/);
   x86;
 } elsif ($opts{arch} eq 'x86_64') {
-  @ALL_ARCHS = filter(qw/mmx sse sse2 sse3 ssse3 sse4_1 avx avx2/);
+  @ALL_ARCHS = filter(qw/mmx sse sse2 sse3 ssse3 sse4_1 sse4_2 avx avx2/);
   @REQUIRES = filter(keys %required ? keys %required : qw/mmx sse sse2/);
   &require(@REQUIRES);
   x86;
@@ -383,12 +430,14 @@ if ($opts{arch} eq 'x86') {
   close CONFIG_FILE;
   mips;
 } elsif ($opts{arch} =~ /armv7\w?/) {
-  @ALL_ARCHS = filter(qw/neon_asm neon/);
-  &require(@REQUIRES);
+  @ALL_ARCHS = filter(qw/neon/);
   arm;
 } elsif ($opts{arch} eq 'armv8' || $opts{arch} eq 'arm64' ) {
   @ALL_ARCHS = filter(qw/neon/);
   arm;
+} elsif ($opts{arch} eq 'ppc') {
+  @ALL_ARCHS = filter(qw/vsx/);
+  ppc;
 } else {
   unoptimized;
 }
diff --git a/third_party/aom/build/make/thumb.pm b/third_party/aom/build/make/thumb.pm
index 8248694e9..0a6629d78 100644
--- a/third_party/aom/build/make/thumb.pm
+++ b/third_party/aom/build/make/thumb.pm
@@ -55,13 +55,6 @@ sub FixThumbInstructions($$)
     # "addne r0, r0, r2".
     s/^(\s*)((ldr|str)(ne)?[bhd]?)(\s+)(\w+),(\s*\w+,)?\s*\[(\w+)\],\s*(\w+)/$1$2$5$6,$7 [$8]\n$1add$4$5$8, $8, $9/g;
 
-    # Convert a conditional addition to the pc register into a series of
-    # instructions. This converts "addlt pc, pc, r3, lsl #2" into
-    # "itttt lt", "movlt.n r12, pc", "addlt.w r12, #12",
-    # "addlt.w r12, r12, r3, lsl #2", "movlt.n pc, r12".
-    # This assumes that r12 is free at this point.
-    s/^(\s*)addlt(\s+)pc,\s*pc,\s*(\w+),\s*lsl\s*#(\d+)/$1itttt$2lt\n$1movlt.n$2r12, pc\n$1addlt.w$2r12, #12\n$1addlt.w$2r12, r12, $3, lsl #($4-$branch_shift_offset)\n$1movlt.n$2pc, r12/g;
-
     # Convert "mov pc, lr" into "bx lr", since the former only works
     # for switching from arm to thumb (and only in armv7), but not
     # from thumb to arm.
diff --git a/third_party/aom/build/make/version.sh b/third_party/aom/build/make/version.sh
deleted file mode 100755
index 2a7090e4d..000000000
--- a/third_party/aom/build/make/version.sh
+++ /dev/null
@@ -1,78 +0,0 @@
-#!/bin/sh
-## Copyright (c) 2016, Alliance for Open Media. All rights reserved
-##
-## This source code is subject to the terms of the BSD 2 Clause License and
-## the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
-## was not distributed with this source code in the LICENSE file, you can
-## obtain it at www.aomedia.org/license/software. If the Alliance for Open
-## Media Patent License 1.0 was not distributed with this source code in the
-## PATENTS file, you can obtain it at www.aomedia.org/license/patent.
-##
-
-
-
-for opt in "$@"; do
-    optval="${opt#*=}"
-    case "$opt" in
-    --bare) bare=true ;;
-    *) break ;;
-    esac
-    shift
-done
-source_path=${1:-.}
-out_file=${2}
-id=${3:-VERSION_STRING}
-
-git_version_id=""
-if [ -e "${source_path}/.git" ]; then
-    # Source Path is a git working copy. Check for local modifications.
-    # Note that git submodules may have a file as .git, not a directory.
-    export GIT_DIR="${source_path}/.git"
-    git_version_id=$(git describe --match=v[0-9]* 2>/dev/null)
-fi
-
-changelog_version=""
-for p in "${source_path}" "${source_path}/.."; do
-    if [ -z "$git_version_id" -a -f "${p}/CHANGELOG" ]; then
-        changelog_version=$(grep -m 1 " v[0-9]" "${p}/CHANGELOG" \
-            | awk '{print $2}')
-        changelog_version="${changelog_version}"
-        break
-    fi
-done
-version_str="${changelog_version}${git_version_id}"
-bare_version=${version_str#v}
-major_version=${bare_version%%.*}
-bare_version=${bare_version#*.}
-minor_version=${bare_version%%.*}
-bare_version=${bare_version#*.}
-patch_version=${bare_version%%-*}
-bare_version=${bare_version#${patch_version}}
-extra_version=${bare_version##-}
-
-#since they'll be used as integers below make sure they are or force to 0
-for v in major_version minor_version patch_version; do
-    if eval echo \$$v |grep -E -q '[^[:digit:]]'; then
-        eval $v=0
-    fi
-done
-
-if [ ${bare} ]; then
-    echo "${changelog_version}${git_version_id}" > $$.tmp
-else
-    cat<<EOF>$$.tmp
-#define VERSION_MAJOR  $major_version
-#define VERSION_MINOR  $minor_version
-#define VERSION_PATCH  $patch_version
-#define VERSION_EXTRA  "$extra_version"
-#define VERSION_PACKED ((VERSION_MAJOR<<16)|(VERSION_MINOR<<8)|(VERSION_PATCH))
-#define ${id}_NOSP "${version_str}"
-#define ${id}      " ${version_str}"
-EOF
-fi
-if [ -n "$out_file" ]; then
-diff $$.tmp ${out_file} >/dev/null 2>&1 || cat $$.tmp > ${out_file}
-else
-cat $$.tmp
-fi
-rm $$.tmp