diff -ur libvpx-1.8.0/build/make/Makefile libvpx-1.8.0+iPhone/build/make/Makefile
--- libvpx-1.8.0/build/make/Makefile	2019-02-04 07:02:33.000000000 -1000
+++ libvpx-1.8.0+iPhone/build/make/Makefile	2019-04-03 14:16:22.000000000 -1000
@@ -70,9 +70,15 @@
 ASFLAGS+=-I$(BUILD_PFX)$(BUILD_ROOT)/ -I$(SRC_PATH)/
 DIST_DIR?=dist
 HOSTCC?=gcc
+ifeq ($(words $(subst -, ,$(TOOLCHAIN))),4)
+TGT_ISA:=$(word 1, $(subst -, ,$(TOOLCHAIN)))
+TGT_OS:=$(word 3, $(subst -, ,$(TOOLCHAIN)))
+TGT_CC:=$(word 4, $(subst -, ,$(TOOLCHAIN)))
+else
 TGT_ISA:=$(word 1, $(subst -, ,$(TOOLCHAIN)))
 TGT_OS:=$(word 2, $(subst -, ,$(TOOLCHAIN)))
 TGT_CC:=$(word 3, $(subst -, ,$(TOOLCHAIN)))
+endif
 quiet:=$(if $(or $(verbose), $(V)),, yes)
 qexec=$(if $(quiet),@)
 
diff -ur libvpx-1.8.0/build/make/configure.sh libvpx-1.8.0+iPhone/build/make/configure.sh
--- libvpx-1.8.0/build/make/configure.sh	2019-02-04 07:02:33.000000000 -1000
+++ libvpx-1.8.0+iPhone/build/make/configure.sh	2019-04-03 14:17:28.000000000 -1000
@@ -771,35 +771,27 @@
     # detect tgt_os
     case "$gcctarget" in
       *darwin10*)
-        tgt_isa=x86_64
         tgt_os=darwin10
         ;;
       *darwin11*)
-        tgt_isa=x86_64
         tgt_os=darwin11
         ;;
       *darwin12*)
-        tgt_isa=x86_64
         tgt_os=darwin12
         ;;
       *darwin13*)
-        tgt_isa=x86_64
         tgt_os=darwin13
         ;;
       *darwin14*)
-        tgt_isa=x86_64
         tgt_os=darwin14
         ;;
       *darwin15*)
-        tgt_isa=x86_64
         tgt_os=darwin15
         ;;
       *darwin16*)
-        tgt_isa=x86_64
         tgt_os=darwin16
         ;;
       *darwin17*)
-        tgt_isa=x86_64
         tgt_os=darwin17
         ;;
       x86_64*mingw32*)
@@ -838,9 +830,16 @@
   #
   # Set up toolchain variables
   #
-  tgt_isa=$(echo ${toolchain} | awk 'BEGIN{FS="-"}{print $1}')
-  tgt_os=$(echo ${toolchain} | awk 'BEGIN{FS="-"}{print $2}')
-  tgt_cc=$(echo ${toolchain} | awk 'BEGIN{FS="-"}{print $3}')
+  if [ "$(echo ${toolchain} | awk 'BEGIN{FS="-"}{print NF}')" == "4" ]; then
+      tgt_isa=$(echo ${toolchain} | awk 'BEGIN{FS="-"}{print $1}')
+      tgt_flavor=$(echo ${toolchain} | awk 'BEGIN{FS="-"}{print $2}')
+      tgt_os=$(echo ${toolchain} | awk 'BEGIN{FS="-"}{print $3}')
+      tgt_cc=$(echo ${toolchain} | awk 'BEGIN{FS="-"}{print $4}')
+  else
+      tgt_isa=$(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}')
+  fi
 
   # Mark the specific ISA requested as enabled
   soft_enable ${tgt_isa}
@@ -876,12 +875,14 @@
   # 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 ${iphoneos_sdk_dir}"
+    arm*-darwin*|aarch64*-darwin*)
+      if [ -z "${CROSS}" ]; then
+          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
       fi
       ;;
     x86*-darwin*)
@@ -894,6 +895,8 @@
   esac
 
   case ${toolchain} in
+    aarch64-*-darwin*|arm-*-darwin*)
+      ;;  
     *-darwin8-*)
       add_cflags  "-mmacosx-version-min=10.4"
       add_ldflags "-mmacosx-version-min=10.4"
@@ -1153,16 +1156,17 @@
           ;;
 
         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)"
+          if [ -z "${CROSS}" ]; then
+              XCRUN_FIND="xcrun --sdk iphoneos --find }"
+          CXX="${CXX:-$(${XCRUN_FIND}clang++)}"
+          CC="${CC:-$(${XCRUN_FIND}clang)}"
+          AR="${AR:-$(${XCRUN_FIND}ar)}"
+          AS="${AS:-$(${XCRUN_FIND}as)}"
+          STRIP="${STRIP:-$(${XCRUN_FIND}strip)}"
+          NM="${NM:-$(${XCRUN_FIND}nm)}"
+          RANLIB="${RANLIB:-$(${XCRUN_FIND}ranlib)}"
           AS_SFX=.S
-          LD="${CXX:-$(${XCRUN_FIND} ld)}"
+          LD="${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
@@ -1208,6 +1212,7 @@
             check_add_asflags -fembed-bitcode
             check_add_ldflags -fembed-bitcode
           fi
+          fi
           ;;
 
         linux*)
diff -ur libvpx-1.8.0/configure libvpx-1.8.0+iPhone/configure
--- libvpx-1.8.0/configure	2019-02-04 07:02:33.000000000 -1000
+++ libvpx-1.8.0+iPhone/configure	2019-04-03 14:16:22.000000000 -1000
@@ -100,9 +100,11 @@
 # alphabetically by architecture, generic-gnu last.
 all_platforms="${all_platforms} arm64-android-gcc"
 all_platforms="${all_platforms} arm64-darwin-gcc"
+all_platforms="${all_platforms} aarch64-apple-darwin17-gcc"
 all_platforms="${all_platforms} arm64-linux-gcc"
 all_platforms="${all_platforms} arm64-win64-gcc"
 all_platforms="${all_platforms} arm64-win64-vs15"
+all_platforms="${all_platforms} arm-apple-darwin11-gcc"
 all_platforms="${all_platforms} armv7-android-gcc"   #neon Cortex-A8
 all_platforms="${all_platforms} armv7-darwin-gcc"    #neon Cortex-A8
 all_platforms="${all_platforms} armv7-linux-rvct"    #neon Cortex-A8