if [ -n "$NGX_CLANG_VER" ]; then
  # Chromium headers assume clang is always in C++11 mode. Oblige it.
  for ps_src_file in $PS_NGX_SRCS; do
    ps_obj_file="$NGX_OBJS/addon/src/`basename $ps_src_file .cc`.o"
    echo "$ps_obj_file : CFLAGS += --std=c++11" >> $NGX_MAKEFILE
  done
fi