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--!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, TBOOX Open Source Group.
--
-- @author ruki
-- @file clang.lua
--
-- imports
import("core.tool.compiler")
import("core.project.config")
import("private.action.build.object", {alias = "objectbuilder"})
import("module_parser")
-- load parent target with modules files
function load_parent(target, opt)
-- get modules flag
local modulesflag
local compinst = compiler.load("cxx", {target = target})
if compinst:has_flags("-fmodules") then
modulesflag = "-fmodules"
elseif compinst:has_flags("-fmodules-ts") then
modulesflag = "-fmodules-ts"
end
assert(modulesflag, "compiler(clang): does not support c++ module!")
-- add module flags
target:add("cxxflags", modulesflag)
-- add the module cache directory
local cachedir = path.join(config.buildir(), ".gens", "rules", "modules", "cache")
target:add("cxxflags", "-fmodules-cache-path=" .. cachedir, {force = true})
target:add("cxxflags", "-fimplicit-modules", "-fimplicit-module-maps", "-fprebuilt-module-path=" .. cachedir, {force = true})
end
-- build module files
function build_with_batchjobs(target, batchjobs, sourcebatch, opt)
-- get modules flag
local modulesflag
local compinst = compiler.load("cxx", {target = target})
if compinst:has_flags("-fmodules") then
modulesflag = "-fmodules"
elseif compinst:has_flags("-fmodules-ts") then
modulesflag = "-fmodules-ts"
end
assert(modulesflag, "compiler(clang): does not support c++ module!")
-- get the module cache directory, @note we must use same cache directory for each targets
-- @see https://github.com/xmake-io/xmake/issues/2194
--
local cachedir = path.join(config.buildir(), ".gens", "rules", "modules", "cache")
-- we need patch objectfiles to sourcebatch for linking module objects
sourcebatch.sourcekind = "cxx"
sourcebatch.objectfiles = sourcebatch.objectfiles or {}
sourcebatch.dependfiles = sourcebatch.dependfiles or {}
for _, sourcefile in ipairs(sourcebatch.sourcefiles) do
local objectfile = target:objectfile(sourcefile)
table.insert(sourcebatch.objectfiles, objectfile)
table.insert(sourcebatch.dependfiles, target:dependfile(objectfile))
end
-- load moduledeps
local moduledeps, moduledeps_files = module_parser.load(target, sourcebatch, opt)
-- compile module files to object files
local count = 0
local modulefiles = {}
local sourcefiles_total = #sourcebatch.sourcefiles
for i = 1, sourcefiles_total do
local sourcefile = sourcebatch.sourcefiles[i]
local moduleinfo = moduledeps_files[sourcefile] or {}
-- make module file path, @note we need process submodule name, e.g. module.submodule.mpp -> module.submodule.pcm
-- @see https://github.com/xmake-io/xmake/pull/1982
local modulefile = path.join(cachedir, (moduleinfo.name or path.basename(sourcefile)) .. ".pcm")
table.insert(modulefiles, modulefile)
-- make build job
moduleinfo.job = batchjobs:newjob(sourcefile, function (index, total)
-- compile module files to *.pcm
local opt2 = table.join(opt, {configs = {force = {cxxflags = {modulesflag,
"-fimplicit-modules", "-fimplicit-module-maps", "-fprebuilt-module-path=" .. cachedir,
"--precompile", "-x c++-module", "-fmodules-cache-path=" .. cachedir}}}})
opt2.progress = (index * 100) / total
opt2.objectfile = modulefiles[i]
opt2.dependfile = target:dependfile(opt2.objectfile)
opt2.sourcekind = assert(sourcebatch.sourcekind, "%s: sourcekind not found!", sourcefile)
objectbuilder.build_object(target, sourcefile, opt2)
-- compile *.pcm to object files
opt2.configs = {force = {cxxflags = {modulesflag, "-fmodules-cache-path=" .. cachedir,
"-fimplicit-modules", "-fimplicit-module-maps", "-fprebuilt-module-path=" .. cachedir}}}
opt2.quiet = true
opt2.objectfile = sourcebatch.objectfiles[i]
opt2.dependfile = sourcebatch.dependfiles[i]
objectbuilder.build_object(target, modulefiles[i], opt2)
-- add module flags to other c++ files after building all modules
count = count + 1
if count == sourcefiles_total then
target:add("cxxflags", modulesflag, "-fmodules-cache-path=" .. cachedir, {force = true})
-- FIXME It is invalid for the module implementation unit
--target:add("cxxflags", "-fimplicit-modules", "-fimplicit-module-maps", "-fprebuilt-module-path=" .. cachedir, {force = true})
for _, modulefile in ipairs(modulefiles) do
target:add("cxxflags", "-fmodule-file=" .. modulefile, {force = true})
end
end
end)
end
-- build batchjobs
module_parser.build_batchjobs(moduledeps, batchjobs, opt.rootjob)
end
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