message: Have build-cocoa.sh's `-c` option skip creating a .tar.xz archive.
  `-c` is used as part of a development workflow, when there's no reason
  to create a .tar.xz archive. Skipping the archiving can save a significant
  amount of time.
diff: @@ -11,7 +11,7 @@ function usage {
  echo "Arguments:"
  echo " -b : build from source. If absent it will expect prebuilt packages"
  echo " -m : build for macOS only"
  - echo " -c : copy core to the specified folder"
  + echo " -c : copy core to the specified folder instead of packaging it"
  exit 1;
  }
  @@ -78,8 +78,8 @@ if [[ ! -z $COPY ]]; then
  rm -rf "${DESTINATION}/core"
  mkdir -p "${DESTINATION}"
  cp -R core "${DESTINATION}"
  -fi
  -
  +else
  v=$(git describe --tags)
  rm -f "realm-core-cocoa-${v}.tar.xz"
  tar -cJvf "realm-core-cocoa-${v}.tar.xz" core
  +fi
  