prepbuild

• Users guide
• -location=@iu-cs i == instrumentation
• create .src_root_marker under the project directory as the mark of src tree
• under the project directory, we need to create a config directory ,in which the enviroment configuration files (e.g., @iu-cs) should be stored.
• prepbuild_script.sh will be invoked by prepbuild at the src root directory, this shell can be used to create the symbolic link for the lib and header file, for example

  #!/bin/sh
  mkdir build_include >/dev/null 2>&1
  rm -rf build_include/*
  ln -s ../src/bxsa build_include/bxsa 2>/dev/null