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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 object.lua
--
-- imports
import("core.base.option")
import("core.theme.theme")
import("core.tool.compiler")
import("core.project.depend")
import("private.cache.build_cache")
import("async.runjobs")
import("utils.progress")
import("private.service.distcc_build.client", {alias = "distcc_build_client"})
-- do build file
function _do_build_file(target, sourcefile, opt)
-- get build info
local objectfile = opt.objectfile
local dependfile = opt.dependfile
local sourcekind = opt.sourcekind
-- load compiler
local compinst = compiler.load(sourcekind, {target = target})
-- get compile flags
local compflags = compinst:compflags({target = target, sourcefile = sourcefile, configs = opt.configs})
-- load dependent info
local dependinfo = target:is_rebuilt() and {} or (depend.load(dependfile, {target = target}) or {})
-- dry run?
local dryrun = option.get("dry-run")
-- need build this object?
--
-- we need use `os.mtime(dependfile)` to determine the mtime of the dependfile to avoid objectfile corruption due to compilation interruptions
-- @see https://github.com/xmake-io/xmake/issues/748
--
-- we also need avoid the problem of not being able to recompile after the objectfile has been deleted
-- @see https://github.com/xmake-io/xmake/issues/2551#issuecomment-1183922208
local depvalues = {compinst:program(), compflags}
local lastmtime = os.isfile(objectfile) and os.mtime(dependfile) or 0
if not dryrun and not depend.is_changed(dependinfo, {lastmtime = lastmtime, values = depvalues}) then
return
end
-- is verbose?
local verbose = option.get("verbose")
-- exists ccache or distcc?
-- we just show cache/distc to avoid confusion with third-party ccache/distcc
local prefix = ""
if build_cache.is_enabled(target) and build_cache.is_supported(sourcekind) then
prefix = "cache "
end
if distcc_build_client.is_distccjob() and distcc_build_client.singleton():has_freejobs() then
prefix = prefix .. "distc "
end
-- trace progress info
if not opt.quiet then
progress.show(opt.progress, "${color.build.object}%scompiling.$(mode) %s", prefix, sourcefile)
end
-- trace verbose info
if verbose then
-- show the full link command with raw arguments, it will expand @xxx.args for msvc/link on windows
print(compinst:compcmd(sourcefile, objectfile, {compflags = compflags, rawargs = true}))
end
if not dryrun then
-- do compile
dependinfo.files = {}
assert(compinst:compile(sourcefile, objectfile, {dependinfo = dependinfo, compflags = compflags}))
-- update files and values to the depfiles
dependinfo.values = depvalues
table.insert(dependinfo.files, sourcefile)
-- add precompiled header to the depfiles when building sourcefile
local build_pch
local pcxxoutputfile = target:pcoutputfile("cxx")
local pcoutputfile = target:pcoutputfile("c")
if pcxxoutputfile or pcoutputfile then
-- https://github.com/xmake-io/xmake/issues/3988
local extension = path.extension(sourcefile)
if (extension:startswith(".h") or extension == ".inl") then
build_pch = true
end
end
if target:has_sourcekind("cxx") and pcxxoutputfile and not build_pch then
table.insert(dependinfo.files, pcxxoutputfile)
end
if target:has_sourcekind("cc") and pcoutputfile and not build_pch then
table.insert(dependinfo.files, pcoutputfile)
end
depend.save(dependinfo, dependfile)
end
end
-- build object
function build_object(target, sourcefile, opt)
local script = target:script("build_file", _do_build_file)
if script then
script(target, sourcefile, opt)
end
end
-- build the source files
function build(target, sourcebatch, opt)
for i = 1, #sourcebatch.sourcefiles do
local sourcefile = sourcebatch.sourcefiles[i]
opt.objectfile = sourcebatch.objectfiles[i]
opt.dependfile = sourcebatch.dependfiles[i]
opt.sourcekind = assert(sourcebatch.sourcekind, "%s: sourcekind not found!", sourcefile)
build_object(target, sourcefile, opt)
end
end
-- add batch jobs to build the source files
function main(target, batchjobs, sourcebatch, opt)
local rootjob = opt.rootjob
for i = 1, #sourcebatch.sourcefiles do
local sourcefile = sourcebatch.sourcefiles[i]
local objectfile = sourcebatch.objectfiles[i]
local dependfile = sourcebatch.dependfiles[i]
local sourcekind = assert(sourcebatch.sourcekind, "%s: sourcekind not found!", sourcefile)
batchjobs:addjob(sourcefile, function (index, total, jobopt)
local build_opt = table.join({objectfile = objectfile, dependfile = dependfile, sourcekind = sourcekind, progress = jobopt.progress}, opt)
build_object(target, sourcefile, build_opt)
end, {rootjob = rootjob, distcc = opt.distcc})
end
end
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