option.jam

C++的一个好库。。。现在很流行

#  Copyright (c) 2005 Vladimir Prus.
#
#  Use, modification and distribution is subject to the Boost Software
#  License Version 1.0. (See accompanying file LICENSE_1_0.txt or
#  http://www.boost.org/LICENSE_1_0.txt)

import modules ;

rule get ( name : default-value ? )
{
    local m = [ MATCH --$(name)=(.*) : [ modules.peek : ARGV ] ] ;
    if $(m)
    {
        return $(m[1]) ;
    }
    else
    {
        return $(default-value) ;
    }        
}