gistfile1.txt

def options(ctx):                                                                                                                                                              
    ctx.add_option("--with-zmq", action="store_true", default=False,                                                                                                           
                   dest="with_zmq", help="Compile ZeroMQ Support")             

def configure(ctx):                                                                                                                                                            
                                                                                                                                                                               
    ctx.check_tool("compiler_cc")                 
    ctx.check_cfg(atleast_pkgconfig_version='0.0.0')
    if ctx.options.with_zmq:                                                                                                                                                  
        ctx.check_cfg(package='libzmq', args="--cflags --libs", uselib_store="ZMQ", mandatory=True)                                                                           
    elif not ctx.options.without_zmq:                                                                                                                                         
        ctx.check_cfg(package='libzmq', args="--cflags --libs", uselib_store="ZMQ")