iOS: Always build H264 HW encoder/decoder

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 68 matching lines @@
     gyp_file=webrtc/build/ios/merge_ios_libs.gyp
     gyp_target=rtc_sdk_peerconnection_objc_no_op
     override_visibility=1
   elif [[ ${build_type} == "framework" ]]; then
     echo "Building framework."
   else
     echo "Unexpected build type: ${build_type}"
     exit 1
   fi
 
-  export GYP_DEFINES="OS=ios target_arch=${target_arch} use_objc_h264=1 \
+  export GYP_DEFINES="OS=ios target_arch=${target_arch} \
 clang_xcode=1 ios_deployment_target=8.0 \
 ios_override_visibility=${override_visibility} \
 libvpx_build_vp9=${libvpx_build_vp9}"
   export GYP_GENERATORS="ninja"
   export GYP_GENERATOR_FLAGS="output_dir=${ninja_output_dir}"
 
   # GYP generation requires relative path for some reason.
   pushd ${WEBRTC_BASE_DIR}
   webrtc/build/gyp_webrtc.py ${gyp_file}
   popd
@@ skipping 160 matching lines @@
   ln -sf ${INPUT_HEADER_DIR} ${OUTPUT_HEADER_DIR}/WebRTC
 else
   echo "BUILD_TYPE ${BUILD_TYPE} not supported."
   exit 1
 fi
 
 echo "Generating LICENSE.html."
 ${LICENSE_SCRIPT} ${OUTPUT_DIR}/arm64_libs ${OUTPUT_DIR}
 
 echo "Done!"