Rewrite iOS FAT libraries build script in Python

tools-webrtc/ios/build_ios_libs.sh

 #!/bin/bash
 
-#  Copyright 2015 The WebRTC project authors. All Rights Reserved.
+#  Copyright 2017 The WebRTC project authors. All Rights Reserved.
 #
 #  Use of this source code is governed by a BSD-style license
 #  that can be found in the LICENSE file in the root of the source
 #  tree. An additional intellectual property rights grant can be found
 #  in the file PATENTS.  All contributing project authors may
 #  be found in the AUTHORS file in the root of the source tree.
 
-# Generates static FAT libraries for ios in out_ios_libs.
+# This script has been rewritten in Python. Temporary "redirect":
 
-# Exit on errors.
-set -e
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
 
-# Environment
-export PATH=/usr/libexec:$PATH
-
-SCRIPT_DIR=$(cd $(dirname $0) && pwd)
-WEBRTC_BASE_DIR=${SCRIPT_DIR}/../..
-
-function clean_artifacts {
-  local output_dir=$1
-  if [[ -d ${output_dir} ]]; then
-    echo "Deleting ${output_dir}"
-    rm -r ${output_dir}
-  fi
-}
-
-function build_webrtc {
-  local target_arch=$1
-  local flavor=$2
-  local build_type=$3
-  local ios_deployment_target=$4
-  local libvpx_build_vp9=$5
-  local use_bitcode=$6
-  local custom_gn_options=$7
-
-  OUTPUT_DIR=${SDK_OUTPUT_DIR}/${target_arch}_libs
-  GN_ARGS="target_os=\"ios\" ios_enable_code_signing=false \
-use_xcode_clang=true is_component_build=false"
-
-  # Add flavor option.
-  if [[ ${flavor} = "debug" ]]; then
-    GN_ARGS="${GN_ARGS} is_debug=true"
-  elif [[ ${flavor} = "release" ]]; then
-    GN_ARGS="${GN_ARGS} is_debug=false"
-  else
-    echo "Unexpected flavor type: ${flavor}"
-    exit 1
-  fi
-
-  # Add the specified architecture.
-  GN_ARGS="${GN_ARGS} target_cpu=\"${target_arch}\""
-
-  # Add deployment target.
-  GN_ARGS="${GN_ARGS} ios_deployment_target=\"${ios_deployment_target}\""
-
-  # Add vp9 option.
-  GN_ARGS="${GN_ARGS} rtc_libvpx_build_vp9=${libvpx_build_vp9}"
-
-  # Add bitcode option.
-  GN_ARGS="${GN_ARGS} enable_ios_bitcode=${use_bitcode}"
-
-  # Add custom options.
-  if [[ -n "${custom_gn_options}" ]]; then
-    GN_ARGS="${GN_ARGS} ${custom_gn_options}"
-  fi
-
-  # Generate static or dynamic.
-  if [[ ${build_type} = "static_only" ]]; then
-    GN_TARGET_NAME="rtc_sdk_objc"
-  elif [[ ${build_type} == "framework" ]]; then
-    GN_TARGET_NAME="rtc_sdk_framework_objc"
-    GN_ARGS="${GN_ARGS} enable_dsyms=true enable_stripping=true"
-  else
-    echo "Build type \"${build_type}\" is not supported."
-    exit 1
-  fi
-
-  echo "Building WebRTC with args: ${GN_ARGS}"
-  gn gen ${OUTPUT_DIR} --args="${GN_ARGS}"
-  echo "Building target: ${GN_TARGET_NAME}"
-  ninja -C ${OUTPUT_DIR} ${GN_TARGET_NAME}
-
-  # Strip debug symbols to reduce size.
-  if [[ ${build_type} = "static_only" ]]; then
-    strip -S ${OUTPUT_DIR}/obj/webrtc/sdk/lib${GN_TARGET_NAME}.a -o \
-        ${OUTPUT_DIR}/lib${GN_TARGET_NAME}.a
-  fi
-}
-
-function usage {
-  echo "WebRTC iOS FAT libraries build script."
-  echo "Each architecture is compiled separately before being merged together."
-  echo "By default, the library is created in out_ios_libs/. (Change with -o.)"
-  echo "The headers will be copied to out_ios_libs/include."
-  echo "Usage: $0 [-h] [-b build_type] [-c] [-o output_dir] [-r rev_num] [-e]"
-  echo "  -h Print this help."
-  echo "  -b The build type. Can be \"framework\" or \"static_only\"."
-  echo "     Defaults to \"framework\"."
-  echo "  -c Removes the previously generated build output, if any."
-  echo "  -o Specifies a directory to output the build artifacts to."
-  echo "     If specified together with -c, deletes the dir."
-  echo "  -r Specifies a revision number to embed if building the framework."
-  echo "  -e Compile with bitcode."
-  exit 0
-}
-
-SDK_OUTPUT_DIR=${WEBRTC_BASE_DIR}/out_ios_libs
-SDK_LIB_NAME="librtc_sdk_objc.a"
-SDK_FRAMEWORK_NAME="WebRTC.framework"
-
-BUILD_FLAVOR="release"
-BUILD_TYPE="framework"
-ENABLED_ARCHITECTURES=("arm" "arm64" "x64")
-IOS_DEPLOYMENT_TARGET="8.0"
-LIBVPX_BUILD_VP9="false"
-USE_BITCODE="false"
-CUSTOM_GN_OPTS=""
-WEBRTC_REVISION="0"
-
-# Parse arguments.
-while getopts "hb:co:r:e" opt; do
-  case "${opt}" in
-    h) usage;;
-    b) BUILD_TYPE="${OPTARG}";;
-    c) PERFORM_CLEAN=1;;
-    e) USE_BITCODE="true";;
-    o) SDK_OUTPUT_DIR="${OPTARG}";;
-    r) WEBRTC_REVISION="${OPTARG}";;
-    *)
-      usage
-      exit 1
-      ;;
-  esac
-done
-
-if [[ ${PERFORM_CLEAN} -ne 0 ]]; then
-  clean_artifacts ${SDK_OUTPUT_DIR}
-  exit 0
-fi
-
-# Build all architectures.
-for arch in ${ENABLED_ARCHITECTURES[*]}; do
-    build_webrtc $arch ${BUILD_FLAVOR} ${BUILD_TYPE} \
-                 ${IOS_DEPLOYMENT_TARGET} ${LIBVPX_BUILD_VP9} ${USE_BITCODE} \
-                 ${CUSTOM_GN_OPTS}
-done
-
-# Ignoring x86 except for static libraries for now because of a GN build issue
-# where the generated dynamic framework has the wrong architectures.
-
-# Create FAT archive.
-if [[ ${BUILD_TYPE} = "static_only" ]]; then
-  build_webrtc "x86" ${BUILD_FLAVOR} ${BUILD_TYPE} \
-               ${IOS_DEPLOYMENT_TARGET} ${LIBVPX_BUILD_VP9} ${USE_BITCODE} \
-               ${CUSTOM_GN_OPTS}
-
-  ARM_LIB_PATH=${SDK_OUTPUT_DIR}/arm_libs/${SDK_LIB_NAME}
-  ARM64_LIB_PATH=${SDK_OUTPUT_DIR}/arm64_libs/${SDK_LIB_NAME}
-  X64_LIB_PATH=${SDK_OUTPUT_DIR}/x64_libs/${SDK_LIB_NAME}
-  X86_LIB_PATH=${SDK_OUTPUT_DIR}/x86_libs/${SDK_LIB_NAME}
-
-  # Combine the slices.
-  lipo ${ARM_LIB_PATH} ${ARM64_LIB_PATH} ${X64_LIB_PATH} ${X86_LIB_PATH} \
-       -create -output ${SDK_OUTPUT_DIR}/${SDK_LIB_NAME}
-elif [[ ${BUILD_TYPE} = "framework" ]]; then
-  ARM_LIB_PATH=${SDK_OUTPUT_DIR}/arm_libs
-  ARM64_LIB_PATH=${SDK_OUTPUT_DIR}/arm64_libs
-  X64_LIB_PATH=${SDK_OUTPUT_DIR}/x64_libs
-  X86_LIB_PATH=${SDK_OUTPUT_DIR}/x86_libs
-
-  # Combine the slices.
-  DYLIB_PATH="WebRTC.framework/WebRTC"
-  cp -R ${ARM64_LIB_PATH}/WebRTC.framework ${SDK_OUTPUT_DIR}
-  rm ${SDK_OUTPUT_DIR}/${DYLIB_PATH}
-  echo "Merging framework slices."
-  lipo ${ARM_LIB_PATH}/${DYLIB_PATH} \
-       ${ARM64_LIB_PATH}/${DYLIB_PATH} \
-       ${X64_LIB_PATH}/${DYLIB_PATH} \
-       -create -output ${SDK_OUTPUT_DIR}/${DYLIB_PATH}
-
-  # Merge the dSYM slices.
-  DSYM_PATH="WebRTC.dSYM/Contents/Resources/DWARF/WebRTC"
-  cp -R ${ARM64_LIB_PATH}/WebRTC.dSYM ${SDK_OUTPUT_DIR}
-  rm ${SDK_OUTPUT_DIR}/${DSYM_PATH}
-  echo "Merging dSYM slices."
-  lipo ${ARM_LIB_PATH}/${DSYM_PATH} \
-      ${ARM64_LIB_PATH}/${DSYM_PATH} \
-      ${X64_LIB_PATH}/${DSYM_PATH} \
-      -create -output ${SDK_OUTPUT_DIR}/${DSYM_PATH}
-
-  # Modify the version number.
-  # Format should be <Branch cut MXX>.<Hotfix #>.<Rev #>.
-  # e.g. 55.0.14986 means branch cut 55, no hotfixes, and revision number 14986.
-  INFOPLIST_PATH=${SDK_OUTPUT_DIR}/WebRTC.framework/Info.plist
-  MAJOR_MINOR=$(PlistBuddy -c "Print :CFBundleShortVersionString" \
-                ${INFOPLIST_PATH})
-  VERSION_NUMBER="${MAJOR_MINOR}.${WEBRTC_REVISION}"
-  echo "Substituting revision number: ${VERSION_NUMBER}"
-  PlistBuddy -c "Set :CFBundleVersion ${VERSION_NUMBER}" ${INFOPLIST_PATH}
-  plutil -convert binary1 ${INFOPLIST_PATH}
-else
-  echo "BUILD_TYPE ${BUILD_TYPE} not supported."
-  exit 1
-fi
-
-echo "Done."
+exec "$SCRIPT_DIR/build_ios_libs.py" "$@"