libvpx: Pull from upstream

source/libvpx/build/make/configure.sh

 #!/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 libvpx
 ##  related.
 ##
 ##  This build system is based in part on the FFmpeg configure script.
 ##
@@ skipping 410 matching lines @@
 CC=${CC}
 CXX=${CXX}
 AR=${AR}
 LD=${LD}
 AS=${AS}
 STRIP=${STRIP}
 NM=${NM}
 
 CFLAGS  = ${CFLAGS}
 CXXFLAGS  = ${CXXFLAGS}
-ARFLAGS = -rus\$(if \$(quiet),c,v)
+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}
 EOF
 
   if enabled rvct; then cat >> $1 << EOF
@@ skipping 279 matching lines @@
 
   # 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).
   IOS_VERSION_MIN="6.0"
 
   # Handle darwin variants. Newer SDKs allow targeting older
   # platforms, so use the newest one available.
   case ${toolchain} in
-    arm*-darwin*)
-      ios_sdk_dir="$(show_darwin_sdk_path iphoneos)"
-      if [ -d "${ios_sdk_dir}" ]; then
-        add_cflags  "-isysroot ${ios_sdk_dir}"
-        add_ldflags "-isysroot ${ios_sdk_dir}"
-      fi
-      ;;
     *-darwin*)
       osx_sdk_dir="$(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
@@ skipping 55 matching lines @@
           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
-          case ${toolchain} in
-            *-darwin*)
-              # Neon is guaranteed on iOS 6+ devices, while old media extensions
-              # no longer assemble with iOS 9 SDK
-              ;;
-            *)
-              soft_enable media
-          esac
+          soft_enable media
           ;;
         armv6)
           soft_enable media
           ;;
       esac
 
       asm_conversion_cmd="cat"
 
       case ${tgt_cc} in
         gcc)
@@ skipping 243 matching lines @@
         win*)
           enabled gcc && add_cflags -fno-common
           ;;
         solaris*)
           CC=${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?
@@ skipping 322 matching lines @@
   # 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
 }