Use bitcode by default for ios framework build.

webrtc/build/ios/build_ios_libs.sh

 #!/bin/bash
 
 #  Copyright 2015 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.
 
@@ skipping 19 matching lines @@
 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 custom_gn_options=$6
 
   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"
+use_xcode_clang=true is_component_build=false rtc_ios_enable_bitcode=true"
 
   # 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
@@ skipping 48 matching lines @@
   echo "  -r Specifies a revision number to embed if building the framework."
   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"
 CUSTOM_GN_OPTS=""
 WEBRTC_REVISION="0"
 
 # Parse arguments.
 while getopts "hb:co:r:" opt; do
   case "${opt}" in
     h) usage;;
     b) BUILD_TYPE="${OPTARG}";;
     c) PERFORM_CLEAN=1;;
     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.
-build_webrtc "arm" ${BUILD_FLAVOR} ${BUILD_TYPE} \
-             ${IOS_DEPLOYMENT_TARGET} ${LIBVPX_BUILD_VP9} ${CUSTOM_GN_OPTS}
-build_webrtc "arm64" ${BUILD_FLAVOR} ${BUILD_TYPE} \
-             ${IOS_DEPLOYMENT_TARGET} ${LIBVPX_BUILD_VP9} ${CUSTOM_GN_OPTS}
-build_webrtc "x64" ${BUILD_FLAVOR} ${BUILD_TYPE} \
-             ${IOS_DEPLOYMENT_TARGET} ${LIBVPX_BUILD_VP9} ${CUSTOM_GN_OPTS}
+for arch in ${ENABLED_ARCHITECTURES[*]}; do
+    build_webrtc $arch ${BUILD_FLAVOR} ${BUILD_TYPE} \
+                 ${IOS_DEPLOYMENT_TARGET} ${LIBVPX_BUILD_VP9} ${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} ${CUSTOM_GN_OPTS}
 
   ARM_LIB_PATH=${SDK_OUTPUT_DIR}/arm_libs/${SDK_LIB_NAME}
@@ skipping 46 matching lines @@
   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."