#!/usr/bin/env python

import string, Utils, Options
from dynconfig import *

def set_options(opt):
    # get all the basic GNU options from the gnu_dirs tool
    opt.tool_options('gnu_dirs')
    for option in dir_options.keys():
        default = dir_options[option][0]
        help    = dir_options[option][1]
        varname = get_varname(option)
        opt.add_option('--%s' % option,
                       help=(help + ' [%s]' % default),
                       action="store", dest=varname, default=default)


cflags_vars = [ 'CONFIGFILE' ]

def configure(conf):
    # get all the basic GNU options from the gnu_dirs tool
    conf.check_tool('gnu_dirs')
    for option in dir_options.keys():
        varname = get_varname(option)
        value = getattr(Options.options, varname, None)
        value = Utils.subst_vars(value, conf.env)
        conf.ASSERT(value is not None, "Missing configure option %s" % varname)
        conf.ASSERT(varname not in conf.env, "Variable %s already defined" % varname)
        conf.env[varname] = value

    for f in dyn_cflags.keys():
        # substitute twice, as we could have substitutions containing variables
        v = Utils.subst_vars(dyn_cflags[f], conf.env)
        v = Utils.subst_vars(v, conf.env)
        conf.ASSERT(v != '', "Empty dynconfig value for %s" % f)
        conf.ASSERT(v.find('${') == -1, "Unsubstituted variable in %s : %s : %s" % (f, dyn_cflags[f], v))
        if f not in conf.env:
            conf.env[f] = v
        if f in cflags_vars:
            conf.DEFINE(f, v, quote=True)

def build(bld):
    cflags = dynconfig_cflags(bld)
    bld.SAMBA3_SUBSYSTEM('DYNCONFIG',
                        '../dynconfig.c',
                        deps='replace talloc tdb popt',
                        cflags=cflags)


def dynconfig_cflags(bld):
    '''work out the extra CFLAGS for dynconfig.c'''
    cflags = []
    for f in dyn_cflags.keys():
        # substitute twice, as we could have substitutions containing variables
        v = Utils.subst_vars(dyn_cflags[f], bld.env)
        v = Utils.subst_vars(v, bld.env)
        bld.ASSERT(v != '', "Empty dynconfig value for %s" % f)
        bld.ASSERT(v.find('${') == -1, "Unsubstituted variable in %s : %s : %s" % (f, dyn_cflags[f], v))
        cflags.append('-D%s="%s"' % (f, v))
    return cflags