--- /dev/null
+cd "${TARGET_BUILD_DIR}/${PUBLIC_HEADERS_FOLDER_PATH}"
+
+if [[ ${TARGET_MAC_OS_X_VERSION_MAJOR} == "1080" ]]; then
+ UNIFDEF_OPTIONS="-DJSC_OBJC_API_AVAILABLE_MAC_OS_X_1080";
+else
+ UNIFDEF_OPTIONS="-UJSC_OBJC_API_AVAILABLE_MAC_OS_X_1080";
+fi
+
+UNIFDEF_OPTIONS+=" -D__MAC_OS_X_VERSION_MIN_REQUIRED=${TARGET_MAC_OS_X_VERSION_MAJOR}"
+
+for ((i = 0; i < ${SCRIPT_INPUT_FILE_COUNT}; ++i)); do
+ eval HEADER=\${SCRIPT_INPUT_FILE_${i}};
+ unifdef -B ${UNIFDEF_OPTIONS} -o ${HEADER}.unifdef ${HEADER}
+ case $? in
+ 0)
+ rm ${HEADER}.unifdef
+ ;;
+ 1)
+ mv ${HEADER}{.unifdef,}
+ ;;
+ *)
+ exit 1
+ esac
+done
+