--!A cross-platform build utility based on Lua
--
-- Licensed to the Apache Software Foundation (ASF) under one
-- or more contributor license agreements.  See the NOTICE file
-- distributed with this work for additional information
-- regarding copyright ownership.  The ASF licenses this file
-- to you under the Apache License, Version 2.0 (the
-- "License"); you may not use this file except in compliance
-- with the License.  You may obtain a copy of the License at
--
--     http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
-- 
-- Copyright (C) 2015 - 2019, TBOOX Open Source Group.
--
-- @author      ruki
-- @file        clang.lua
--

-- inherit gcc
inherit("gcc")

-- init it
function init(self)
    
    -- init super
    _super.init(self)

    -- suppress warning 
    self:add("cxflags", "-Qunused-arguments")
    self:add("mxflags", "-Qunused-arguments")
    self:add("asflags", "-Qunused-arguments")
end

-- make the optimize flag
function nf_optimize(self, level)

    -- the maps
    local maps = 
    {   
        none       = "-O0"
    ,   fast       = "-O1"
    ,   faster     = "-O2"
    ,   fastest    = "-O3"
    ,   smallest   = "-Oz" -- smaller than -Os
    ,   aggressive = "-Ofast"
    }

    -- make it
    return maps[level] 
end