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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, Xmake Open Source Community.
--
-- @author ruki
-- @file target.lua
--
-- imports
import("core.base.option")
import("core.base.hashset")
import("core.tool.compiler")
import("core.project.depend")
import("utils.progress")
-- get dependent target files
function _get_target_depfiles(target)
local depfiles = {}
for _, dep in ipairs(target:orderdeps()) do
if dep:is_static() or dep:is_shared() then
table.insert(depfiles, dep:targetfile())
end
end
local linkdepfiles = target:data("linkdepfiles")
if linkdepfiles then
table.join2(depfiles, linkdepfiles)
end
table.sort(depfiles)
return depfiles
end
-- build the source files
function build_sourcefiles(target, sourcebatch, opt)
-- get the target file
local targetfile = target:targetfile()
-- get source files and kind
local sourcefiles = sourcebatch.sourcefiles
local sourcekind = sourcebatch.sourcekind
-- get depend file
local dependfile = target:dependfile(targetfile)
-- load compiler
local compinst = compiler.load(sourcekind, {target = target})
-- get compile flags
local compflags = compinst:compflags({target = target})
-- load dependent info
local dependinfo = option.get("rebuild") and {} or (depend.load(dependfile) or {})
-- need build this object?
local depvalues = {compinst:program(), compflags}
local depfiles = table.join(table.clone(sourcefiles), _get_target_depfiles(target))
if not depend.is_changed(dependinfo, {lastmtime = os.mtime(targetfile), values = depvalues, files = depfiles}) then
return
end
-- trace progress into
progress.show(opt.progress, "${color.build.target}linking.$(mode) %s", path.filename(targetfile))
-- trace verbose info
vprint(compinst:buildcmd(sourcefiles, targetfile, {target = target, compflags = compflags}))
-- flush io buffer to update progress info
io.flush()
-- compile it
dependinfo.files = {}
assert(compinst:build(sourcefiles, targetfile, {target = target, dependinfo = dependinfo, compflags = compflags}))
-- update files and values to the dependent file
dependinfo.values = depvalues
table.join2(dependinfo.files, depfiles)
depend.save(dependinfo, dependfile)
end
-- build target
function main(target, opt)
-- @note only support one source kind!
local sourcebatches = target:sourcebatches()
if sourcebatches then
local sourcebatch = sourcebatches["rust.build"]
if sourcebatch then
build_sourcefiles(target, sourcebatch, opt)
end
end
end
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