--!A cross-platform build utility based on Lua
--
-- Licensed 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) 2015-2020, TBOOX Open Source Group.
--
-- @author      ruki
-- @file        xmake.lua
--

-- define toolchain
toolchain("gnu-rm")

    -- set homepage
    set_homepage("https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-rm")
    set_description("GNU Arm Embedded Toolchain")

    -- mark as standalone toolchain
    set_kind("standalone")

    -- check toolchain
    on_check("check")

    -- on load
    on_load(function (toolchain)

        -- imports
        import("core.project.config")

        -- get cross prefix
        local cross = config.get("cross") or ""

        -- set toolset
        toolchain:set("toolset", "cc", cross .. "gcc", cross .. "clang")
        toolchain:set("toolset", "cxx", cross .. "gcc", cross .. "clang", cross .. "g++", cross .. "clang++")
        toolchain:set("toolset", "cpp", cross .. "gcc -E", cross .. "clang -E")
        toolchain:set("toolset", "as", cross .. "gcc", cross .. "clang")
        toolchain:set("toolset", "ld", cross .. "g++", cross .. "gcc", cross .. "clang++", cross .. "clang")
        toolchain:set("toolset", "sh", cross .. "g++", cross .. "gcc", cross .. "clang++", cross .. "clang")
        toolchain:set("toolset", "ar", cross .. "ar")
        toolchain:set("toolset", "ex", cross .. "ar")
        toolchain:set("toolset", "ranlib", cross .. "ranlib")
        toolchain:set("toolset", "strip", cross .. "strip")

        -- init linkdirs and includedirs
        local sdkdir = toolchain:sdkdir()
        if sdkdir then
            local includedir = path.join(sdkdir, "include")
            if os.isdir(includedir) then
                toolchain:add("includedirs", includedir)
            end
            local linkdir = path.join(sdkdir, "lib")
            if os.isdir(linkdir) then
                toolchain:add("linkdirs", linkdir)
            end
        end

        -- add bin search library for loading some dependent .dll files windows
        local bindir = toolchain:bindir()
        if bindir and is_host("windows") then
            toolchain:add("runenvs", "PATH", bindir)
        end

        -- add basic flags
        toolchain:add("ldflags", "--specs=nosys.specs", "--specs=nano.specs", {force = true})
        toolchain:add("shflags", "--specs=nosys.specs", "--specs=nano.specs", {force = true})
        toolchain:add("syslinks", "c", "m")
    end)