Build ipa from Unity Project

Unity-iPhoneWorkspaceBuilder

WORKSPACE=/Path/To/Your/Unity/Project
PROJECT_NAME=YourUnityProjectName

# suppose Builder.cs has BuildXcodeProject method
/Applications/Unity/Unity.app/Contents/MacOS/Unity -projectPath $WORKSPACE -quit -batchmode -executeMethod Builder.BuildXcodeProject

XCODE_WORKSPACE_CONFIG_PATH=$PROJECT_NAME/Unity-iPhone.xcworkspace
SCHEME=Unity-iPhone
CONFIGURATION=Release

CODE_SIGN_IDENTITY="Your Code Sign Identity Name (ex. iOS Development: Xxxxx)"
PROVISIONING_PROFILE="Your Provisioning Profile Name (ex. iOSTeam Provisioning Profile: Xxxxx)"

ARCHIVE_FILE_PATH=$WORKSPACE/$PROJECT_NAME.xcarchive
IPA_FILE_PATH=$WORKSPACE/$PROJECT_NAME.ipa

# clean
rm -rf "${ARCHIVE_FILE_PATH}"
rm -rf "${IPA_FILE_PATH}"

# build archive
BUILD_OPTIONS="DEBUG_INFORMATION_FORMAT=dwarf"
xcodebuild -workspace "${XCODE_WORKSPACE_CONFIG_PATH}" -scheme "${SCHEME}" -configuration "${CONFIGURATION}" CODE_SIGN_IDENTITY="${CODE_SIGN_IDENTITY}" archive -archivePath "${ARCHIVE_FILE_PATH}" "${BUILD_OPTIONS}"

EXIT_CODE=$?
if [ $EXIT_CODE -ne 0 ]; then
  cat "failed to build app file"
  exit $EXIT_CODE
fi

# build ipa
xcodebuild -exportArchive -exportFormat ipa -archivePath "${ARCHIVE_FILE_PATH}" -exportPath "${IPA_FILE_PATH}" -exportProvisioningProfile "${PROVISIONING_PROFILE}"

EXIT_CODE=$?
if [ $EXIT_CODE -ne 0 ]; then
  cat "failed to build ipa file"
  exit $EXIT_CODE
fi