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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 - 2019, 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)
-- 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 = {cxxflags = {"-fmodules-ts", "--precompile", "-x c++-module"}}})
import("private.action.build.object")(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 = {"-fmodules-ts"}}
opt.quiet = true
import("private.action.build.object")(target, sourcebatch, opt)
-- add module files
target:add("cxxflags", "-fmodules-ts")
for _, modulefile in ipairs(modulefiles) do
target:add("cxxflags", "-fmodule-file=" .. modulefile)
end
end
-- build module files using msvc
function _build_modulefiles_msvc(target, sourcebatch, opt)
-- 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 = {"/experimental:module /module:interface /module:output " .. os.args(modulefile), "/TP"}
import("private.action.build.object")(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", "/experimental:module /module:reference " .. os.args(modulefile))
end
end
-- build module files
function main(target, sourcebatch, opt)
-- do compile
local compinst = compiler.load("cxx")
if compinst:name() == "clang" and compinst:has_flags("-fmodules-ts") then
_build_modulefiles_clang(target, sourcebatch, opt)
elseif compinst:name() == "cl" and compinst:has_flags("/experimental:module") then
_build_modulefiles_msvc(target, sourcebatch, opt)
else
raise("compiler(%s): does not support module!", compinst:name())
end
end
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