generate_gypi.sh: --disable-avx and --only-config flags

generate_gypi.sh

Index: generate_gypi.sh
diff --git a/generate_gypi.sh b/generate_gypi.sh
index 08c16d7a844ab3f0af4c070d1d61de371b527ee2..756488bb8798d7cc22718c0632228b21f37ca592 100755
--- a/generate_gypi.sh
+++ b/generate_gypi.sh
@@ -8,10 +8,13 @@
 # config/platform directories needed to build libvpx.
 # Every time libvpx source code is updated just run this script.
 #
-# For example:
-# $ ./generate_gypi.sh
+# Usage:
+# $ ./generate_gypi.sh [--disable-avx] [--only-configs]
 #
-# And this will update all the .gypi, .gni and config files needed.
+# The following optional flags are supported:
+# --disable-avx : AVX+AVX2 support is disabled.
+# --only-configs: Excludes generation of GN and GYP files (i.e. only
+#                 configuration headers are generated).
 #
 # !!! It's highly recommended to install yasm before running this script.
 
@@ -20,6 +23,23 @@ BASE_DIR=$(pwd)
 LIBVPX_SRC_DIR="source/libvpx"
 LIBVPX_CONFIG_DIR="source/config"
 
+for i in "$@"
+do
+case $i in
+  --disable-avx)
+  DISABLE_AVX=true
+  shift
+  ;;
+  --only-configs)
+  ONLY_CONFIGS=true
+  shift
+  ;;
+  *)
+  # Unknown option.
+  ;;
+esac
+done
+
 # Print license header.
 # $1 - Output base name
 function write_license {
@@ -118,7 +138,7 @@ function write_target_definition {
   fi
   echo "      'cflags': [ '-m$4', ]," >> "$2"
   echo "      'xcode_settings': { 'OTHER_CFLAGS': [ '-m$4' ] }," >> "$2"
-  if [[ $4 == avx2 ]]; then
+if [[ ! $DISABLE_AVX && $4 == avx2 ]]; then
   echo "      'msvs_settings': {" >> "$2"
   echo "        'VCCLCompilerTool': {" >> "$2"
   echo "          'EnableEnhancedInstructionSet': '5', # /arch:AVX2" >> "$2"
@@ -183,12 +203,12 @@ function write_intrinsics_gypi {
   if [ 0 -ne ${#sse4_1_sources} ]; then
     write_target_definition sse4_1_sources[@] "$2" libvpx_intrinsics_sse4_1 sse4.1
   fi
-  if [ 0 -ne ${#avx_sources} ]; then
+  if [[ ! $DISABLE_AVX && 0 -ne ${#avx_sources} ]]; then
     #write_target_definition avx_sources[@] "$2" libvpx_intrinsics_avx avx
     echo "ERROR: Uncomment avx sections in libvpx.gyp"
     exit 1
   fi
-  if [ 0 -ne ${#avx2_sources} ]; then
+  if [[ ! $DISABLE_AVX && 0 -ne ${#avx2_sources} ]]; then
     write_target_definition avx2_sources[@] "$2" libvpx_intrinsics_avx2 avx2
   fi
 
@@ -267,8 +287,10 @@ function convert_srcs_to_project_files {
     write_gni sse3_sources $2_sse3 "$BASE_DIR/libvpx_srcs.gni"
     write_gni ssse3_sources $2_ssse3 "$BASE_DIR/libvpx_srcs.gni"
     write_gni sse4_1_sources $2_sse4_1 "$BASE_DIR/libvpx_srcs.gni"
-    write_gni avx_sources $2_avx "$BASE_DIR/libvpx_srcs.gni"
-    write_gni avx2_sources $2_avx2 "$BASE_DIR/libvpx_srcs.gni"
+    if [[ ! $DISABLE_AVX ]]; then
+      write_gni avx_sources $2_avx "$BASE_DIR/libvpx_srcs.gni"
+      write_gni avx2_sources $2_avx2 "$BASE_DIR/libvpx_srcs.gni"
+    fi
   else
     local c_sources=$(echo "$source_list" | egrep '.(c|h)$')
     local assembly_sources=$(echo -e "$source_list\n$intrinsic_list" | \
@@ -377,7 +399,7 @@ function gen_rtcd_header {
 function gen_config_files {
   ./configure $2 > /dev/null
 
-  # Disable HAVE_UNISTD_H as it causes vp8 to try to detect how many cpus 
+  # Disable HAVE_UNISTD_H as it causes vp8 to try to detect how many cpus
   # available, which doesn't work from iniside a sandbox on linux.
   ( echo '/HAVE_UNISTD_H/s/[01]/0/' ; echo 'w' ; echo 'q' ) | ed -s vpx_config.h
 
@@ -403,6 +425,9 @@ cd $TEMP_DIR
 
 echo "Generate config files."
 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 --enable-vp9-temporal-denoising --enable-vp9-postproc --size-limit=16384x16384"
+if [[ $DISABLE_AVX ]]; then
+  all_platforms="${all_platforms} --disable-avx --disable-avx2"
+fi
 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}"
@@ -463,68 +488,70 @@ echo "Prepare Makefile."
 ./configure --target=generic-gnu > /dev/null
 make_clean
 
-# Remove existing .gni file.
-rm -rf $BASE_DIR/libvpx_srcs.gni
-write_license $BASE_DIR/libvpx_srcs.gni
+if [[ ! $ONLY_CONFIGS ]]; then
+  # Remove existing .gni file.
+  rm -rf $BASE_DIR/libvpx_srcs.gni
+  write_license $BASE_DIR/libvpx_srcs.gni
 
-echo "Generate X86 source list."
-config=$(print_config linux/ia32)
-make_clean
-make libvpx_srcs.txt target=libs $config > /dev/null
-convert_srcs_to_project_files libvpx_srcs.txt libvpx_srcs_x86
+  echo "Generate X86 source list."
+  config=$(print_config linux/ia32)
+  make_clean
+  make libvpx_srcs.txt target=libs $config > /dev/null
+  convert_srcs_to_project_files libvpx_srcs.txt libvpx_srcs_x86
 
-# Copy vpx_version.h. The file should be the same for all platforms.
-cp vpx_version.h $BASE_DIR/$LIBVPX_CONFIG_DIR
+  # Copy vpx_version.h. The file should be the same for all platforms.
+  cp vpx_version.h $BASE_DIR/$LIBVPX_CONFIG_DIR
 
-echo "Generate X86_64 source list."
-config=$(print_config linux/x64)
-make_clean
-make libvpx_srcs.txt target=libs $config > /dev/null
-convert_srcs_to_project_files libvpx_srcs.txt libvpx_srcs_x86_64
+  echo "Generate X86_64 source list."
+  config=$(print_config linux/x64)
+  make_clean
+  make libvpx_srcs.txt target=libs $config > /dev/null
+  convert_srcs_to_project_files libvpx_srcs.txt libvpx_srcs_x86_64
 
-echo "Generate ARM source list."
-config=$(print_config linux/arm)
-make_clean
-make libvpx_srcs.txt target=libs $config > /dev/null
-convert_srcs_to_project_files libvpx_srcs.txt libvpx_srcs_arm
+  echo "Generate ARM source list."
+  config=$(print_config linux/arm)
+  make_clean
+  make libvpx_srcs.txt target=libs $config > /dev/null
+  convert_srcs_to_project_files libvpx_srcs.txt libvpx_srcs_arm
 
-echo "Generate ARM NEON source list."
-config=$(print_config linux/arm-neon)
-make_clean
-make libvpx_srcs.txt target=libs $config > /dev/null
-convert_srcs_to_project_files libvpx_srcs.txt libvpx_srcs_arm_neon
+  echo "Generate ARM NEON source list."
+  config=$(print_config linux/arm-neon)
+  make_clean
+  make libvpx_srcs.txt target=libs $config > /dev/null
+  convert_srcs_to_project_files libvpx_srcs.txt libvpx_srcs_arm_neon
 
-echo "Generate ARM NEON CPU DETECT source list."
-config=$(print_config linux/arm-neon-cpu-detect)
-make_clean
-make libvpx_srcs.txt target=libs $config > /dev/null
-convert_srcs_to_project_files libvpx_srcs.txt libvpx_srcs_arm_neon_cpu_detect
+  echo "Generate ARM NEON CPU DETECT source list."
+  config=$(print_config linux/arm-neon-cpu-detect)
+  make_clean
+  make libvpx_srcs.txt target=libs $config > /dev/null
+  convert_srcs_to_project_files libvpx_srcs.txt libvpx_srcs_arm_neon_cpu_detect
 
-echo "Generate ARM64 source list."
-config=$(print_config linux/arm64)
-make_clean
-make libvpx_srcs.txt target=libs $config > /dev/null
-convert_srcs_to_project_files libvpx_srcs.txt libvpx_srcs_arm64
+  echo "Generate ARM64 source list."
+  config=$(print_config linux/arm64)
+  make_clean
+  make libvpx_srcs.txt target=libs $config > /dev/null
+  convert_srcs_to_project_files 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 $config > /dev/null
-convert_srcs_to_project_files libvpx_srcs.txt libvpx_srcs_mips
+  echo "Generate MIPS source list."
+  config=$(print_config_basic linux/mipsel)
+  make_clean
+  make libvpx_srcs.txt target=libs $config > /dev/null
+  convert_srcs_to_project_files libvpx_srcs.txt libvpx_srcs_mips
 
-echo "MIPS64 source list is identical to MIPS source list. No need to generate it."
+  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 $config > /dev/null
-convert_srcs_to_project_files libvpx_srcs.txt libvpx_srcs_nacl
+  echo "Generate NaCl source list."
+  config=$(print_config_basic nacl)
+  make_clean
+  make libvpx_srcs.txt target=libs $config > /dev/null
+  convert_srcs_to_project_files 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 $config > /dev/null
-convert_srcs_to_project_files libvpx_srcs.txt libvpx_srcs_generic
+  echo "Generate GENERIC source list."
+  config=$(print_config_basic linux/generic)
+  make_clean
+  make libvpx_srcs.txt target=libs $config > /dev/null
+  convert_srcs_to_project_files libvpx_srcs.txt libvpx_srcs_generic
+fi
 
 echo "Remove temporary directory."
 cd $BASE_DIR