--!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-present, Xmake Open Source Community.
--
-- @author      ruki, Arthapz
-- @file        xmake.lua
--

-- define rule: c++.build.modules
rule("c++.build.modules")
    -- @note support.contains_modules() need it
    set_extensions(".cppm", ".ccm", ".cxxm", ".c++m", ".mpp", ".mxx", ".ixx")

    -- clang/support/config will be depend on target/symbols in release modules (hidden)
    -- @see The default config parallel execution will cause incremental compilation problems
    add_orders("mode.release", "c++.build.modules")
    add_orders("mode.minsizerel", "c++.build.modules")

    add_deps("c++.build.modules.scanner",
             "c++.build.modules.builder",
             "c++.build.modules.install")

    on_config("config")

    -- insert std modules early to enable culling them if unused
    after_config("config.insert_stdmodules")

-- scan modules
rule("c++.build.modules.scanner")
    set_sourcekinds("cxx", {objectfiles = false})
    set_extensions(".cppm", ".ccm", ".cxxm", ".c++m", ".mpp", ".mxx", ".ixx")

    on_prepare_files("scanner", {jobgraph = true})
    after_prepare_files("scanner.after_scan")

-- build modules
rule("c++.build.modules.builder")
    set_sourcekinds("cxx", {objectfiles = false})
    set_extensions(".cppm", ".ccm", ".cxxm", ".c++m", ".mpp", ".mxx", ".ixx")
    add_orders("c++.build.modules.scanner", "c++.build.modules.builder")

    -- parallel build support to accelerate `xmake build` to build modules
    before_build_files("builder.build_bmis", {jobgraph = true, batch = true})
    on_build_files("builder.build_objectfiles", {jobgraph = true, batch = true})

    -- serial compilation only, usually used to support project generator
    before_buildcmd_files("builder.build_bmis")
    on_buildcmd_files("builder.build_objectfiles")

    after_clean("builder.clean")

-- install modules
rule("c++.build.modules.install")
    set_extensions(".cppm", ".ccm", ".cxxm", ".c++m", ".mpp", ".mxx", ".ixx")

    before_install("install.install")
    before_uninstall("install.uninstall")