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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 build_modulefiles.lua
--
-- imports
import("core.tool.compiler")
-- build module files using clang
function _build_modulefiles_clang(target, 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!")
-- the module cache directory
local cachedir = path.join(target:autogendir(), "rules", "modules", "cache")
-- attempt to compile the module files as cxx
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) .. ".pcm"
table.insert(sourcebatch.objectfiles, objectfile)
table.insert(sourcebatch.dependfiles, target:dependfile(objectfile))
end
-- compile module files to *.pcm
opt = table.join(opt, {configs = {force = {cxxflags = {modulesflag,
"--precompile", "-x c++-module", "-fmodules-cache-path=" .. cachedir}}}})
import("private.action.build.object").build(target, sourcebatch, opt)
-- compile *.pcm to object files
local modulefiles = {}
for idx, sourcefile in ipairs(sourcebatch.sourcefiles) do
local modulefile = sourcebatch.objectfiles[idx]
local objectfile = target:objectfile(sourcefile)
sourcebatch.sourcefiles[idx] = modulefile
sourcebatch.objectfiles[idx] = objectfile
sourcebatch.dependfiles[idx] = target:dependfile(objectfile)
table.insert(modulefiles, modulefile)
end
opt.configs = {cxxflags = {modulesflag, "-fmodules-cache-path=" .. cachedir}}
opt.quiet = true
import("private.action.build.object").build(target, sourcebatch, opt)
-- add module files
target:add("cxxflags", opt.modulesflag, "-fmodules-cache-path=" .. cachedir)
for _, modulefile in ipairs(modulefiles) do
target:add("cxxflags", "-fmodule-file=" .. modulefile)
end
end
-- build module files using gcc
function _build_modulefiles_gcc(target, sourcebatch, opt)
-- get modules flag
local modulesflag
local compinst = compiler.load("cxx", {target = target})
if compinst:has_flags("-fmodules-ts") then
modulesflag = "-fmodules-ts"
end
assert(modulesflag, "compiler(gcc): does not support c++ module!")
-- attempt to compile the module files as cxx
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
-- compile module files to object files
opt = table.join(opt, {configs = {force = {cxxflags = {modulesflag, "-x c++"}}}})
import("private.action.build.object").build(target, sourcebatch, opt)
-- add module files
target:add("cxxflags", modulesflag)
end
-- build module files using msvc
function _build_modulefiles_msvc(target, sourcebatch, opt)
-- get modules flag
local modulesflag
local compinst = compiler.load("cxx", {target = target})
if compinst:has_flags("/experimental:module") then
modulesflag = "/experimental:module"
end
assert(modulesflag, "compiler(msvc): does not support c++ module!")
-- get output flag
local outputflag
if compinst:has_flags("/ifcOutput") then
outputflag = "/ifcOutput"
elseif compinst:has_flags("/module:output") then
outputflag = "/module:output"
end
assert(outputflag, "compiler(msvc): does not support c++ module!")
-- get interface flag
local interfaceflag
if compinst:has_flags("/interface") then
interfaceflag = "/interface"
elseif compinst:has_flags("/module:interface") then
interfaceflag = "/module:interface"
end
assert(interfaceflag, "compiler(msvc): does not support c++ module!")
-- get reference flag
local referenceflag
if compinst:has_flags("/reference") then
referenceflag = "/reference"
elseif compinst:has_flags("/module:interface") then
referenceflag = "/module:reference"
end
assert(referenceflag, "compiler(msvc): does not support c++ module!")
-- attempt to compile the module files as cxx
local modulefiles = {}
opt = table.join(opt, {configs = {}})
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)
local dependfile = target:dependfile(objectfile)
local modulefile = objectfile .. ".pcm"
-- compile module file to *.pcm
local singlebatch = {sourcekind = "cxx", sourcefiles = {sourcefile}, objectfiles = {objectfile}, dependfiles = {dependfile}}
opt.configs.cxxflags = {modulesflag, interfaceflag, outputflag .. " " .. os.args(modulefile), "/TP"}
import("private.action.build.object").build(target, singlebatch, opt)
table.insert(modulefiles, modulefile)
table.insert(sourcebatch.objectfiles, objectfile)
table.insert(sourcebatch.dependfiles, dependfile)
end
-- add module files
for _, modulefile in ipairs(modulefiles) do
target:add("cxxflags", modulesflag, referenceflag .. " " .. os.args(modulefile))
end
end
-- build module files
function main(target, sourcebatch, opt)
local _, toolname = target:tool("cxx")
if toolname:find("clang", 1, true) then
_build_modulefiles_clang(target, sourcebatch, opt)
elseif toolname:find("gcc", 1, true) then
_build_modulefiles_gcc(target, sourcebatch, opt)
elseif toolname == "cl" then
_build_modulefiles_msvc(target, sourcebatch, opt)
else
raise("compiler(%s): does not support c++ module!", toolname)
end
end
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