Fix WebRTC API framework build.

webrtc/build/ios/build_ios_framework.sh

Index: webrtc/build/ios/build_ios_framework.sh
diff --git a/webrtc/build/ios/build_ios_framework.sh b/webrtc/build/ios/build_ios_framework.sh
index 35ec552798ce711f2f5f6b3c9912fddc283100ee..b5bb76e696796ea1e439a6cddf8e878b9c63b049 100755
--- a/webrtc/build/ios/build_ios_framework.sh
+++ b/webrtc/build/ios/build_ios_framework.sh
@@ -10,76 +10,143 @@
 
 # Generates dynamic FAT framework for iOS in out_ios_framework.
 
-# Check for Darwin.
-if [[ ! $(uname) = "Darwin" ]]; then
-  echo "OS X required." >&2
-fi
+# Exit on errors.
+set -e
 
-# Check for iOS library build script.
-SCRIPT_DIR=$(dirname $0)
+# Globals.
+SCRIPT_DIR=$(cd $(dirname $0) && pwd)
 WEBRTC_BASE_DIR=${SCRIPT_DIR}/../../..
-BUILD_WEBRTC_SCRIPT=${WEBRTC_BASE_DIR}/webrtc/build/ios/build_ios_libs.sh
-if [[ ! -x ${BUILD_WEBRTC_SCRIPT} ]]; then
-  echo "Failed to find iOS library build script." >&2
-  exit 1
-fi
-# Check for flatten iOS headers script.
-FLATTEN_HEADERS_SCRIPT=${WEBRTC_BASE_DIR}/webrtc/build/ios/flatten_ios_headers
-if [[ ! -x ${FLATTEN_HEADERS_SCRIPT} ]]; then
-  echo "Failed to find flatten iOS headers script." >&2
-  exit 1
-fi
+BUILD_WEBRTC_SCRIPT=${SCRIPT_DIR}/build_ios_libs.sh
+FLATTEN_HEADERS_SCRIPT=${SCRIPT_DIR}/flatten_ios_headers.py
+SDK_DIR=${SCRIPT_DIR}/SDK
+FRAMEWORK_PROJECT_DIR=${SDK_DIR}/Framework
+FRAMEWORK_PROJECT_PATH=${FRAMEWORK_PROJECT_DIR}/WebRTC.xcodeproj
 
-pushd ${WEBRTC_BASE_DIR}
-LIB_BASE_DIR=out_ios_libs
-FRAMEWORK_BASE_DIR=out_ios_framework
+function check_preconditions {
+  # Check for Darwin.
+  if [[ ! $(uname) = "Darwin" ]]; then
+    echo "OS X required." >&2
+    exit 1
+  fi
+  if [[ ! -x ${BUILD_WEBRTC_SCRIPT} ]]; then
+    echo "Failed to find iOS library build script." >&2
+    exit 1
+  fi
+  if [[ ! -x ${FLATTEN_HEADERS_SCRIPT} ]]; then
+    echo "Failed to find flatten iOS headers script." >&2
+    exit 1
+  fi
+  if [[ ! -x ${FRAMEWORK_PROJECT_PATH} ]]; then
+    echo "Failed to find framework XCode project." >&2
+    exit 1
+  fi
+}
 
-# Build static libraries for iOS.
-${BUILD_WEBRTC_SCRIPT}
-if [ $? -ne 0 ]; then
-  echo "Failed to build iOS static libraries." >&2
-  exit 1
-fi
+function clean_artifacts {
+  # Make XCode clean up after itself.
+  xcodebuild -project ${FRAMEWORK_PROJECT_PATH} -scheme WebRTC \
+      -configuration Release clean
+  xcodebuild -project ${FRAMEWORK_PROJECT_PATH} -scheme WebRTC \
+      -configuration Release clean \
+      -destination "platform=iOS Simulator,name=iPhone 6"
+  # Remove remaining directory that XCode doesn't delete.
+  XCODE_BUILD_DIR=${FRAMEWORK_PROJECT_DIR}/build
+  if [[ -d ${XCODE_BUILD_DIR} ]]; then
+    rm -r ${XCODE_BUILD_DIR}
+  fi
+
+  # Remove the temporary framework header dir.
+  if [[ -d ${FRAMEWORK_INCLUDE_DIR} ]]; then
+    rm -r ${FRAMEWORK_INCLUDE_DIR}
+  fi
+
+  # Remove the generated framework.
+  if [[ -d ${FRAMEWORK_OUTPUT_DIR} ]]; then
+    rm -r ${FRAMEWORK_OUTPUT_DIR}
+  fi
+
+  # Let the other script clean up after itself.
+  ${BUILD_WEBRTC_SCRIPT} -c
+}
+
+function usage {
+  echo "WebRTC iOS Framework build script."
+  echo "Builds a dynamic Framework for the WebRTC APIs."
+  echo "Compiles various architectures and edits header paths as required."
+  echo "Usage: $0 [-h] [-c]"
+  echo "  -h Print this help."
+  echo "  -c Removes generated build output."
+  exit 0
+}
+
+check_preconditions
 
-# Flatten the directory structure for iOS headers.
-${FLATTEN_HEADERS_SCRIPT} ${LIB_BASE_DIR} ${FRAMEWORK_BASE_DIR}
-if [ $? -ne 0 ]; then
-  echo "Failed to flatten iOS headers." >&2
-  exit 1
+# Set the output directories for the various build artifacts.
+# For convenience we'll output some generated files in the same directory
+# as the one we used to output the generated statis libraries.
+LIB_OUTPUT_DIR=${WEBRTC_BASE_DIR}/out_ios_libs
+INCLUDE_OUTPUT_DIR=${LIB_OUTPUT_DIR}/include
+FRAMEWORK_INCLUDE_DIR=${LIB_OUTPUT_DIR}/framework_include
+FRAMEWORK_OUTPUT_DIR=${WEBRTC_BASE_DIR}/out_ios_framework
+PERFORM_CLEAN=0
+
+# Parse arguments.
+while getopts "hc" opt; do
+  case "${opt}" in
+    h) usage;;
+    c) PERFORM_CLEAN=1;;
+    *)
+      usage
+      exit 1
+      ;;
+  esac
+done
+
+if [[ ${PERFORM_CLEAN} -ne 0 ]]; then
+  clean_artifacts
+  exit 0
 fi
 
+# Build static libraries for iOS.
+${BUILD_WEBRTC_SCRIPT} -o ${LIB_OUTPUT_DIR}
+
+# Flatten the directory structure for iOS headers generated from building the
+# static libraries.
+${FLATTEN_HEADERS_SCRIPT} ${INCLUDE_OUTPUT_DIR} ${FRAMEWORK_INCLUDE_DIR}
+
 # Replace full paths for headers with framework paths.
 SED_PATTERN='
   s/(\#import )\"webrtc\/api\/objc\/(.*)\"/\1<WebRTC\/\2>/g;
   s/(\#import )\"webrtc\/base\/objc\/(.*)\"/\1<WebRTC\/\2>/g;
   s/(\#include )\"webrtc\/base\/objc\/(.*)\"/\1<WebRTC\/\2>/g;
 '
-sed -E -i '' "$SED_PATTERN" ${FRAMEWORK_BASE_DIR}/include/*.h
+sed -E -i '' "$SED_PATTERN" ${FRAMEWORK_INCLUDE_DIR}/*.h
 
-SDK_DIR=webrtc/build/ios/SDK
-PROJECT_DIR=${SDK_DIR}/Framework
 # Build the framework.
-pushd ${PROJECT_DIR}
-xcodebuild -project WebRTC.xcodeproj -scheme WebRTC -configuration Release \
-    build CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO
-xcodebuild -project WebRTC.xcodeproj -scheme WebRTC -configuration Release \
-    build -destination 'platform=iOS Simulator,name=iPhone 6'
-popd
-
-# Copy podspec, framework, dSYM and LICENSE to FRAMEWORK_BASE_DIR
-DEVICE_BUILD_DIR=${PROJECT_DIR}/build/Release-iphoneos
-cp ${SDK_DIR}/WebRTC.podspec ${FRAMEWORK_BASE_DIR}/
-cp -R ${DEVICE_BUILD_DIR}/WebRTC.framework ${FRAMEWORK_BASE_DIR}/
-cp -R ${DEVICE_BUILD_DIR}/WebRTC.framework.dSYM ${FRAMEWORK_BASE_DIR}/
-cp -R webrtc/LICENSE ${FRAMEWORK_BASE_DIR}/
-
-# Combine multiple architectures
-SIMULATOR_BUILD_DIR=${PROJECT_DIR}/build/Release-iphonesimulator
+xcodebuild -project ${FRAMEWORK_PROJECT_PATH} -scheme WebRTC \
+    -configuration Release build \
+    CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO
+xcodebuild -project ${FRAMEWORK_PROJECT_PATH} -scheme WebRTC \
+    -configuration Release build \
+    -destination "platform=iOS Simulator,name=iPhone 6"
+
+# XCode should output the build artifacts to the following directories.
+DEVICE_BUILD_DIR=${FRAMEWORK_PROJECT_DIR}/build/Release-iphoneos
+SIMULATOR_BUILD_DIR=${FRAMEWORK_PROJECT_DIR}/build/Release-iphonesimulator
+
+# Copy podspec, framework, dSYM and LICENSE to FRAMEWORK_OUTPUT_DIR.
+mkdir -p ${FRAMEWORK_OUTPUT_DIR}
+cp ${SDK_DIR}/WebRTC.podspec ${FRAMEWORK_OUTPUT_DIR}/
+cp -R ${DEVICE_BUILD_DIR}/WebRTC.framework ${FRAMEWORK_OUTPUT_DIR}/
+cp -R ${DEVICE_BUILD_DIR}/WebRTC.framework.dSYM ${FRAMEWORK_OUTPUT_DIR}/
+cp -R ${WEBRTC_BASE_DIR}/webrtc/LICENSE ${FRAMEWORK_OUTPUT_DIR}/
+
+# Combine multiple architectures.
 DYLIB_PATH=WebRTC.framework/WebRTC
 DWARF_PATH=WebRTC.framework.dSYM/Contents/Resources/DWARF/WebRTC
-lipo ${FRAMEWORK_BASE_DIR}/${DYLIB_PATH} ${SIMULATOR_BUILD_DIR}/${DYLIB_PATH} \
-    -create -output ${FRAMEWORK_BASE_DIR}/${DYLIB_PATH}
-lipo ${FRAMEWORK_BASE_DIR}/${DWARF_PATH} ${SIMULATOR_BUILD_DIR}/${DWARF_PATH} \
-    -create -output ${FRAMEWORK_BASE_DIR}/${DWARF_PATH}
-
-popd
+lipo ${FRAMEWORK_OUTPUT_DIR}/${DYLIB_PATH} \
+    ${SIMULATOR_BUILD_DIR}/${DYLIB_PATH} \
+    -create -output ${FRAMEWORK_OUTPUT_DIR}/${DYLIB_PATH}
+lipo ${FRAMEWORK_OUTPUT_DIR}/${DWARF_PATH} \
+    ${SIMULATOR_BUILD_DIR}/${DWARF_PATH} \
+    -create -output ${FRAMEWORK_OUTPUT_DIR}/${DWARF_PATH}