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 756 matching lines @@
             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"
             ;;
+        *-iphonesimulator-*)
+            add_cflags  "-miphoneos-version-min=5.0"
+            add_ldflags "-miphoneos-version-min=5.0"
+            osx_sdk_dir="$(xcrun --sdk iphonesimulator --show-sdk-path)"
+            add_cflags  "-isysroot ${osx_sdk_dir}"
+            add_ldflags "-isysroot ${osx_sdk_dir}"
+            ;;
     esac
 
     # Handle Solaris variants. Solaris 10 needs -lposix4
     case ${toolchain} in
         sparc-solaris-*)
             add_extralibs -lposix4
             disable_feature fast_unaligned
             ;;
         *-solaris-*)
             add_extralibs -lposix4
             ;;
     esac
 
     # Process ARM architecture variants
     case ${toolchain} in
     arm*)
         # on arm, isa versions are supersets
         case ${tgt_isa} in
         armv8)
             soft_enable neon
             ;;
-        armv7)
+        armv7|armv7s)
             soft_enable neon
             soft_enable neon_asm
             soft_enable media
             soft_enable edsp
             soft_enable fast_unaligned
             ;;
         armv6)
             soft_enable media
             soft_enable edsp
             soft_enable fast_unaligned
             ;;
         armv5te)
             soft_enable edsp
             disable_feature fast_unaligned
             ;;
         esac
 
         asm_conversion_cmd="cat"
 
         case ${tgt_cc} in
         gcc)
             CROSS=${CROSS:-arm-none-linux-gnueabi-}
             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" ]; then
+            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}
 
@@ skipping 319 matching lines @@
                 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}
+           ;;
             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
     ;;
     universal*|*-gcc|generic-gnu)
@@ skipping 100 matching lines @@
 
 process_toolchain() {
     process_common_toolchain
 }
 
 print_config_mk() {
     local prefix=$1
     local makefile=$2
     shift 2
     for cfg; do
-        upname="`toupper $cfg`"
         if enabled $cfg; then
+            upname="`toupper $cfg`"
             echo "${prefix}_${upname}=yes" >> $makefile
         fi
     done
 }
 
 print_config_h() {
     local prefix=$1
     local header=$2
     shift 2
     for cfg; do
@@ skipping 52 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
 }