--!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 - 2018, TBOOX Open Source Group.
--
-- @author      ruki
-- @file        check.lua
--

-- imports
import("detect.sdks.find_cross_toolchain")
import(".checker")

-- check the architecture
function __check_arch(config)

    -- get the architecture
    local arch = config.get("arch")
    if not arch then
        config.set("arch", "none")
    end
end

-- get toolchains
function _toolchains(config)

    -- attempt to get it from cache first
    if _g.TOOLCHAINS then
        return _g.TOOLCHAINS
    end

    -- find cross toolchain
    local cross = ""
    local toolchain = find_cross_toolchain(config.get("sdk") or config.get("bin"), {bin = config.get("bin"), cross = config.get("cross")})
    if toolchain then

        -- save toolchain
        config.set("cross", toolchain.cross, {readonly = true, force = true})
        config.set("bin", toolchain.bin, {readonly = true, force = true})
        cross = toolchain.cross

        -- add bin search library for loading some dependent .dll files windows 
        if toolchain.bin and is_host("windows") then
            os.addenv("PATH", toolchain.bin)
        end
    end

    -- init toolchains
    local toolchains = {}

    -- insert c/c++ tools to toolchains
    checker.toolchain_insert(toolchains, "cc",    cross, "gcc",       "the c compiler")
    checker.toolchain_insert(toolchains, "cc",    cross, "clang",     "the c compiler")
    checker.toolchain_insert(toolchains, "cxx",   cross, "gcc",       "the c++ compiler")
    checker.toolchain_insert(toolchains, "cxx",   cross, "clang",     "the c++ compiler")
    checker.toolchain_insert(toolchains, "cxx",   cross, "g++",       "the c++ compiler")
    checker.toolchain_insert(toolchains, "cxx",   cross, "clang++",   "the c++ compiler")
    checker.toolchain_insert(toolchains, "ld",    cross, "g++",       "the linker")
    checker.toolchain_insert(toolchains, "ld",    cross, "gcc",       "the linker")
    checker.toolchain_insert(toolchains, "ld",    cross, "clang++",   "the linker")
    checker.toolchain_insert(toolchains, "ld",    cross, "clang",     "the linker")
    checker.toolchain_insert(toolchains, "ar",    cross, "ar",        "the static library archiver")
    checker.toolchain_insert(toolchains, "ex",    cross, "ar",        "the static library extractor")
    checker.toolchain_insert(toolchains, "sh",    cross, "g++",       "the shared library linker")
    checker.toolchain_insert(toolchains, "sh",    cross, "gcc",       "the shared library linker")
    checker.toolchain_insert(toolchains, "sh",    cross, "clang++",   "the shared library linker")
    checker.toolchain_insert(toolchains, "sh",    cross, "clang",     "the shared library linker")

    -- insert asm tools to toolchains
    checker.toolchain_insert(toolchains, "as",    cross, "clang",     "the assember")
    checker.toolchain_insert(toolchains, "as",    cross, "gcc",       "the assember")

    -- save toolchains
    _g.TOOLCHAINS = toolchains

    -- ok
    return toolchains
end

-- check it
function main(kind, toolkind)

    -- only check the given tool?
    if toolkind then
        return checker.toolchain_check(kind, toolkind, _toolchains)
    end

    -- init the check list of config
    _g.config = 
    {
        __check_arch
    }

    -- check it
    checker.check(kind, _g)
end