[MIPS64] Adding build support for MIPS64 to libvpx in Chromium

generate_gypi.sh

 #!/bin/bash -e
 #
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This script is used to generate .gypi files and files in the config/platform
 # directories needed to build libvpx.
 # Every time libvpx source code is updated just run this script.
 #
@@ skipping 221 matching lines @@
 function make_clean {
   make clean > /dev/null
   rm -f libvpx_srcs.txt
 }
 
 # Lint a pair of vpx_config.h and vpx_config.asm to make sure they match.
 # $1 - Header file directory.
 function lint_config {
   # mips does not contain any assembly so the header does not need to be
   # compared to the asm.
-  if [[ "$1" != *mipsel ]]; then
+  if [[ "$1" != *mipsel && "$1" != *mips64el ]]; then
     $BASE_DIR/lint_config.sh \
       -h $BASE_DIR/$LIBVPX_CONFIG_DIR/$1/vpx_config.h \
       -a $BASE_DIR/$LIBVPX_CONFIG_DIR/$1/vpx_config.asm
   fi
 }
 
 # Print the configuration.
 # $1 - Header file directory.
 function print_config {
   $BASE_DIR/lint_config.sh -p \
@@ skipping 16 matching lines @@
   echo "$combined_config" | sort | uniq
 }
 
 # Generate *_rtcd.h files.
 # $1 - Header file directory.
 # $2 - Architecture.
 function gen_rtcd_header {
   echo "Generate $LIBVPX_CONFIG_DIR/$1/*_rtcd.h files."
 
   rm -rf $BASE_DIR/$TEMP_DIR/libvpx.config
-  if [ "$2" = "mipsel" ]; then
+  if [[ "$2" == "mipsel" || "$2" == "mips64el" ]]; then
     print_config_basic $1 > $BASE_DIR/$TEMP_DIR/libvpx.config
   else
     $BASE_DIR/lint_config.sh -p \
       -h $BASE_DIR/$LIBVPX_CONFIG_DIR/$1/vpx_config.h \
       -a $BASE_DIR/$LIBVPX_CONFIG_DIR/$1/vpx_config.asm \
       -o $BASE_DIR/$TEMP_DIR/libvpx.config
   fi
 
   $BASE_DIR/$LIBVPX_SRC_DIR/build/make/rtcd.pl \
     --arch=$2 \
@@ skipping 23 matching lines @@
 }
 
 # Generate Config files. "--enable-external-build" must be set to skip
 # detection of capabilities on specific targets.
 # $1 - Header file directory.
 # $2 - Config command line.
 function gen_config_files {
   ./configure $2  > /dev/null
 
   # Generate vpx_config.asm. Do not create one for mips.
-  if [[ "$1" != *mipsel ]]; then
+  if [[ "$1" != *mipsel && "$1" != *mips64el ]]; then
     if [[ "$1" == *x64* ]] || [[ "$1" == *ia32* ]]; then
       egrep "#define [A-Z0-9_]+ [01]" vpx_config.h | awk '{print $2 " equ " $3}' > vpx_config.asm
     else
       egrep "#define [A-Z0-9_]+ [01]" vpx_config.h | awk '{print $2 " EQU " $3}' | perl $BASE_DIR/$LIBVPX_SRC_DIR/build/make/ads2gas.pl > vpx_config.asm
     fi
   fi
 
   cp vpx_config.* $BASE_DIR/$LIBVPX_CONFIG_DIR/$1
   make_clean
   rm -rf vpx_config.*
 }
 
 echo "Create temporary directory."
 TEMP_DIR="$LIBVPX_SRC_DIR.temp"
 rm -rf $TEMP_DIR
 cp -R $LIBVPX_SRC_DIR $TEMP_DIR
 cd $TEMP_DIR
 
 echo "Generate Config Files"
 # TODO(joeyparrish) Enable AVX2 when broader VS2013 support is available
 all_platforms="--enable-external-build --enable-postproc --disable-install-srcs --enable-multi-res-encoding --enable-temporal-denoising --disable-unit-tests --disable-install-docs --disable-examples --disable-avx2"
 gen_config_files linux/ia32 "--target=x86-linux-gcc --disable-ccache --enable-pic --enable-realtime-only ${all_platforms}"
 gen_config_files linux/x64 "--target=x86_64-linux-gcc --disable-ccache --enable-pic --enable-realtime-only ${all_platforms}"
 gen_config_files linux/arm "--target=armv6-linux-gcc --enable-pic --enable-realtime-only --disable-install-bins --disable-install-libs --disable-edsp ${all_platforms}"
 gen_config_files linux/arm-neon "--target=armv7-linux-gcc --enable-pic --enable-realtime-only --disable-edsp ${all_platforms}"
 gen_config_files linux/arm-neon-cpu-detect "--target=armv7-linux-gcc --enable-pic --enable-realtime-only --enable-runtime-cpu-detect --disable-edsp ${all_platforms}"
 gen_config_files linux/arm64 "--force-target=armv8-linux-gcc --enable-pic --enable-realtime-only --disable-edsp ${all_platforms}"
 gen_config_files linux/mipsel "--target=mips32-linux-gcc --disable-fast-unaligned ${all_platforms}"
+gen_config_files linux/mips64el "--target=mips64-linux-gcc --disable-fast-unaligned ${all_platforms}"
 gen_config_files linux/generic "--target=generic-gnu --enable-pic --enable-realtime-only ${all_platforms}"
 gen_config_files win/ia32 "--target=x86-win32-vs12 --enable-realtime-only ${all_platforms}"
 gen_config_files win/x64 "--target=x86_64-win64-vs12 --enable-realtime-only ${all_platforms}"
 gen_config_files mac/ia32 "--target=x86-darwin9-gcc --enable-pic --enable-realtime-only ${all_platforms}"
 gen_config_files mac/x64 "--target=x86_64-darwin9-gcc --enable-pic --enable-realtime-only ${all_platforms}"
 gen_config_files nacl "--target=generic-gnu --enable-pic --enable-realtime-only ${all_platforms}"
 
 echo "Remove temporary directory."
 cd $BASE_DIR
 rm -rf $TEMP_DIR
 
 echo "Lint libvpx configuration."
 lint_config linux/ia32
 lint_config linux/x64
 lint_config linux/arm
 lint_config linux/arm-neon
 lint_config linux/arm-neon-cpu-detect
 lint_config linux/arm64
 lint_config linux/mipsel
+lint_config linux/mips64el
 lint_config linux/generic
 lint_config win/ia32
 lint_config win/x64
 lint_config mac/ia32
 lint_config mac/x64
 lint_config nacl
 
 echo "Create temporary directory."
 TEMP_DIR="$LIBVPX_SRC_DIR.temp"
 rm -rf $TEMP_DIR
 cp -R $LIBVPX_SRC_DIR $TEMP_DIR
 cd $TEMP_DIR
 
 gen_rtcd_header linux/ia32 x86
 gen_rtcd_header linux/x64 x86_64
 gen_rtcd_header linux/arm armv6
 gen_rtcd_header linux/arm-neon armv7
 gen_rtcd_header linux/arm-neon-cpu-detect armv7
 gen_rtcd_header linux/arm64 armv8
 gen_rtcd_header linux/mipsel mipsel
+gen_rtcd_header linux/mips64el mips64el
 gen_rtcd_header linux/generic generic
 gen_rtcd_header win/ia32 x86
 gen_rtcd_header win/x64 x86_64
 gen_rtcd_header mac/ia32 x86
 gen_rtcd_header mac/x64 x86_64
 gen_rtcd_header nacl nacl
 
 echo "Prepare Makefile."
 ./configure --target=generic-gnu > /dev/null
 make_clean
@@ skipping 36 matching lines @@
 make_clean
 make libvpx_srcs.txt target=libs $config > /dev/null
 convert_srcs_to_gypi libvpx_srcs.txt libvpx_srcs_arm64
 
 echo "Generate MIPS source list."
 config=$(print_config_basic linux/mipsel)
 make_clean
 make libvpx_srcs.txt target=libs $config > /dev/null
 convert_srcs_to_gypi libvpx_srcs.txt libvpx_srcs_mips
 
+echo "MIPS64 source list is identical to MIPS source list. No need to generate it."
+
 echo "Generate NaCl source list."
 config=$(print_config_basic nacl)
 make_clean
 make libvpx_srcs.txt target=libs $config > /dev/null
 convert_srcs_to_gypi libvpx_srcs.txt libvpx_srcs_nacl
 
 echo "Generate GENERIC source list."
 config=$(print_config_basic linux/generic)
 make_clean
 make libvpx_srcs.txt target=libs $config > /dev/null
 convert_srcs_to_gypi libvpx_srcs.txt libvpx_srcs_generic
 
 echo "Remove temporary directory."
 cd $BASE_DIR
 rm -rf $TEMP_DIR
 
 # TODO(fgalligan): Is "--disable-fast-unaligned" needed on mipsel?
 # TODO(fgalligan): Can we turn on "--enable-realtime-only" for mipsel?