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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 pcheader.lua
--
-- imports
import("core.language.language")
import("object", {alias = "build_objects"})
function config(target, langkind, opt)
local pcheaderfile = target:pcheaderfile(langkind)
if pcheaderfile then
local sourcekind = language.langkinds()[langkind] or "cxx"
if target:has_tool(sourcekind, "cl", "clang_cl", "gcc", "gxx") then
local headerfile = target:autogenfile(pcheaderfile)
local gcc = false
if target:has_tool(sourcekind, "gcc", "gxx") then
local pcoutputfile = target:pcoutputfile(langkind)
headerfile = path.join(path.directory(pcoutputfile), path.filename(headerfile))
gcc = true
end
-- fix `#pragma once` for msvc
-- https://github.com/xmake-io/xmake/issues/2667
-- https://github.com/xmake-io/xmake/issues/5858
if not os.isfile(headerfile) then
io.writefile(headerfile, ([[
#pragma system_header
#ifdef __cplusplus
#include "%s"
#endif // __cplusplus
]]):format(path.absolute(pcheaderfile):gsub("\\", "/")))
end
-- we need only to add a header wrapper in .gch directory
-- @see https://github.com/xmake-io/xmake/issues/5858#issuecomment-2506918167
if not gcc then
target:pcheaderfile_set(langkind, headerfile)
end
end
-- enable precompiled header?
return true
end
end
-- add batch jobs to build the precompiled header file
function build(target, jobgraph, langkind, opt)
local pcheaderfile = target:pcheaderfile(langkind)
if pcheaderfile then
local sourcefile = pcheaderfile
local objectfile = target:pcoutputfile(langkind)
local dependfile = target:dependfile(objectfile)
local sourcekind = language.langkinds()[langkind]
local sourcebatch = {sourcekind = sourcekind, sourcefiles = {sourcefile}, objectfiles = {objectfile}, dependfiles = {dependfile}}
build_objects(target, jobgraph, sourcebatch, opt)
end
end
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