def build_CLASS(prefix):
<EOL>args = (package_basedir, package_basedir, CLASS_VERSION, os.path.abspath(prefix))<EOL>command = '<STR_LIT>' %args<EOL>ret = os.system(command)<EOL>if ret != <NUM_LIT:0>:<EOL><INDENT>raise ValueError("<STR_LIT>" %CLASS_VERSION)<EOL><DEDENT>
Function to dowwnload CLASS from github and and build the library