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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 proto.lua
--
-- imports
import("core.base.option")
import("core.theme.theme")
import("core.project.config")
import("core.project.depend")
import("core.tool.compiler")
import("lib.detect.find_tool")
import("private.utils.progress")
-- build protobuf file
function main(target, sourcekind, sourcefile_proto, opt)
-- find protoc
local protoc = target:data("protobuf.protoc")
if not protoc and sourcekind == "cxx" then
protoc = find_tool("protoc")
if protoc and protoc.program then
target:data_set("protobuf.protoc", protoc.program)
end
end
-- find protoc-c
local protoc_c = target:data("protobuf.protoc-c")
if not protoc_c and sourcekind == "cc" then
protoc_c = find_tool("protoc-c") or protoc
if protoc_c and protoc_c.program then
target:data_set("protobuf.protoc-c", protoc_c.program)
end
end
-- get protoc
protoc = assert(target:data(sourcekind == "cxx" and "protobuf.protoc" or "protobuf.protoc-c"), "protoc not found!")
-- get c/c++ source file for protobuf
local prefixdir
local fileconfig = target:fileconfig(sourcefile_proto)
if fileconfig then
prefixdir = fileconfig.proto_rootdir
end
local rootdir = path.join(target:autogendir(), "rules", "protobuf")
local filename = path.basename(sourcefile_proto) .. ".pb" .. (sourcekind == "cxx" and ".cc" or "-c.c")
local sourcefile_cx = target:autogenfile(sourcefile_proto, {rootdir = rootdir, filename = filename})
local sourcefile_dir = prefixdir and path.join(rootdir, prefixdir) or path.directory(sourcefile_cx)
-- add includedirs
target:add("includedirs", sourcefile_dir)
-- get object file
local objectfile = target:objectfile(sourcefile_cx)
-- load compiler
local compinst = compiler.load(sourcekind, {target = target})
-- get compile flags
local configs = {includedirs = sourcefile_dir}
if sourcekind == "cxx" then
configs.languages = "c++11"
end
local compflags = compinst:compflags({target = target, sourcefile = sourcefile_cx, configs = configs})
-- add objectfile
table.insert(target:objectfiles(), objectfile)
-- load dependent info
local dependfile = target:dependfile(objectfile)
local dependinfo = option.get("rebuild") and {} or (depend.load(dependfile) or {})
-- need build this object?
local depvalues = {compinst:program(), compflags}
if not depend.is_changed(dependinfo, {lastmtime = os.mtime(objectfile), values = depvalues}) then
return
end
-- trace progress info
progress.show(opt.progress, "${color.build.object}compiling.proto %s", sourcefile_proto)
-- ensure the source file directory
if not os.isdir(sourcefile_dir) then
os.mkdir(sourcefile_dir)
end
-- get compilation flags
local argv = {sourcefile_proto}
if prefixdir then
table.insert(argv, "-I" .. prefixdir)
else
table.insert(argv, "-I" .. path.directory(sourcefile_proto))
end
table.insert(argv, (sourcekind == "cxx" and "--cpp_out=" or "--c_out=") .. sourcefile_dir)
-- do compile
os.vrunv(protoc, argv)
-- trace
if option.get("verbose") then
print(compinst:compcmd(sourcefile_cx, objectfile, {compflags = compflags}))
end
-- compile c/c++ source file for protobuf
dependinfo.files = {}
assert(compinst:compile(sourcefile_cx, objectfile, {dependinfo = dependinfo, compflags = compflags}))
-- update files and values to the dependent file
dependinfo.values = depvalues
table.insert(dependinfo.files, sourcefile_proto)
depend.save(dependinfo, dependfile)
end
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