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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 proto.lua
--
-- imports
import("core.base.option")
import("lib.detect.find_tool")
import("core.project.depend")
import("utils.progress")
import("private.utils.batchcmds")
-- get protoc
function _get_protoc(target, sourcekind)
-- find protoc
-- @see https://github.com/xmake-io/xmake/issues/4659
local envs = os.joinenvs(target:pkgenvs(), os.getenvs())
local protoc = target:data("protobuf.protoc")
if not protoc and sourcekind == "cxx" then
protoc = find_tool("protoc", {envs = envs})
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", {envs = envs}) or protoc
if protoc_c and protoc_c.program then
target:data_set("protobuf.protoc-c", protoc_c.program)
end
end
-- get protoc
return assert(target:data(sourcekind == "cxx" and "protobuf.protoc" or "protobuf.protoc-c"), "protoc not found!")
end
-- get grpc_cpp_plugin
function _get_grpc_cpp_plugin(target, sourcekind)
local envs = os.joinenvs(target:pkgenvs(), os.getenvs())
assert(sourcekind == "cxx", "grpc_cpp_plugin only support c++")
local grpc_cpp_plugin = find_tool("grpc_cpp_plugin", {norun = true, force = true, envs = envs})
return assert(grpc_cpp_plugin and grpc_cpp_plugin.program, "grpc_cpp_plugin not found!")
end
-- we need to add some configs to export includedirs to other targets in on_load
-- @see https://github.com/xmake-io/xmake/issues/2256
function load(target, sourcekind)
local sourcebatch = target:sourcebatches()[sourcekind == "cxx" and "protobuf.cpp" or "protobuf.c"]
for _, sourcefile_proto in ipairs(sourcebatch and sourcebatch.sourcefiles) do
local prefixdir
local autogendir
local public
local grpc_cpp_plugin
local fileconfig = target:fileconfig(sourcefile_proto)
if fileconfig then
public = fileconfig.proto_public
prefixdir = fileconfig.proto_rootdir
autogendir = fileconfig.proto_autogendir
grpc_cpp_plugin = fileconfig.proto_grpc_cpp_plugin
end
local rootdir = autogendir and autogendir or 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, {public = public})
-- add objectfile, @see https://github.com/xmake-io/xmake/issues/5426
local objectfile_grpc
local objectfile = target:objectfile(sourcefile_cx)
table.insert(target:objectfiles(), objectfile)
if grpc_cpp_plugin then
local filename_grpc = path.basename(sourcefile_proto) .. ".grpc.pb.cc"
local sourcefile_cx_grpc = target:autogenfile(sourcefile_proto, {rootdir = rootdir, filename = filename_grpc})
objectfile_grpc = target:objectfile(sourcefile_cx_grpc)
table.insert(target:objectfiles(), objectfile_grpc)
end
end
end
function buildcmd_pfile(target, batchcmds, sourcefile_proto, sourcekind, opt)
-- get protoc
local protoc = _get_protoc(target, sourcekind)
-- get c/c++ source file for protobuf
local prefixdir
local autogendir
local public
local grpc_cpp_plugin
local proto_flags
local fileconfig = target:fileconfig(sourcefile_proto)
if fileconfig then
public = fileconfig.proto_public
prefixdir = fileconfig.proto_rootdir
-- custom autogen directory to access the generated header files
-- @see https://github.com/xmake-io/xmake/issues/3678
autogendir = fileconfig.proto_autogendir
grpc_cpp_plugin = fileconfig.proto_grpc_cpp_plugin
-- custom flags, pass through to protoc
proto_flags = fileconfig.proto_flags
end
local rootdir = autogendir and autogendir or 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)
local grpc_cpp_plugin_bin
local filename_grpc
local sourcefile_cx_grpc
if grpc_cpp_plugin then
grpc_cpp_plugin_bin = _get_grpc_cpp_plugin(target, sourcekind)
filename_grpc = path.basename(sourcefile_proto) .. ".grpc.pb.cc"
sourcefile_cx_grpc = target:autogenfile(sourcefile_proto, {rootdir = rootdir, filename = filename_grpc})
end
local protoc_args = {
path(sourcefile_proto),
path(prefixdir and prefixdir or path.directory(sourcefile_proto), function (p) return "-I" .. p end),
path(sourcefile_dir, function (p) return (sourcekind == "cxx" and "--cpp_out=" or "--c_out=") .. p end)
}
if grpc_cpp_plugin then
local extension = target:is_plat("windows") and ".exe" or ""
table.insert(protoc_args, "--plugin=protoc-gen-grpc=" .. grpc_cpp_plugin_bin .. extension)
table.insert(protoc_args, path(sourcefile_dir, function (p) return ("--grpc_out=") .. p end))
end
if proto_flags then
table.join2(protoc_args, proto_flags)
end
-- add commands
batchcmds:mkdir(sourcefile_dir)
batchcmds:show_progress(
opt.progress,
"${color.build.object}compiling.proto.%s %s",
(sourcekind == "cxx" and "c++" or "c"),
sourcefile_proto
)
batchcmds:vrunv(protoc, protoc_args)
-- add deps
local depmtime = os.mtime(sourcefile_cx)
batchcmds:add_depfiles(sourcefile_proto)
batchcmds:set_depcache(target:dependfile(sourcefile_cx))
if grpc_cpp_plugin then
batchcmds:set_depmtime(math.max(os.mtime(sourcefile_cx_grpc), depmtime))
else
batchcmds:set_depmtime(depmtime)
end
end
function buildcmd_cxfile(target, batchcmds, sourcefile_proto, sourcekind, opt)
-- get protoc
local protoc = _get_protoc(target, sourcekind)
-- get c/c++ source file for protobuf
local prefixdir
local autogendir
local public
local grpc_cpp_plugin
local fileconfig = target:fileconfig(sourcefile_proto)
if fileconfig then
public = fileconfig.proto_public
prefixdir = fileconfig.proto_rootdir
-- custom autogen directory to access the generated header files
-- @see https://github.com/xmake-io/xmake/issues/3678
autogendir = fileconfig.proto_autogendir
grpc_cpp_plugin = fileconfig.proto_grpc_cpp_plugin
end
local rootdir = autogendir and autogendir or path.join(target:autogendir(), "rules", "protobuf")
local filename = path.basename(sourcefile_proto) .. ".pb" .. (sourcekind == "cxx" and ".cc" or "-c.c")
local sourcefile_cx = target:autogenfile(sourcefile_proto, {rootdir = rootdir, filename = filename})
local sourcefile_dir = prefixdir and path.join(rootdir, prefixdir) or path.directory(sourcefile_cx)
local grpc_cpp_plugin_bin
local filename_grpc
local sourcefile_cx_grpc
if grpc_cpp_plugin then
grpc_cpp_plugin_bin = _get_grpc_cpp_plugin(target, sourcekind)
filename_grpc = path.basename(sourcefile_proto) .. ".grpc.pb.cc"
sourcefile_cx_grpc = target:autogenfile(sourcefile_proto, {rootdir = rootdir, filename = filename_grpc})
end
-- get objectfile
local objectfile = target:objectfile(sourcefile_cx)
local objectfile_grpc
if grpc_cpp_plugin then
objectfile_grpc = target:objectfile(sourcefile_cx_grpc)
end
batchcmds:show_progress(opt.progress, "${color.build.object}compiling.proto.$(mode) %s", sourcefile_cx)
batchcmds:compile(sourcefile_cx, objectfile, {configs = {includedirs = sourcefile_dir}})
if grpc_cpp_plugin then
batchcmds:compile(sourcefile_cx_grpc, objectfile_grpc, {configs = {includedirs = sourcefile_dir}})
end
-- add deps
local depmtime = os.mtime(objectfile)
batchcmds:add_depfiles(sourcefile_proto)
batchcmds:set_depcache(target:dependfile(objectfile))
if grpc_cpp_plugin then
batchcmds:set_depmtime(math.max(os.mtime(objectfile_grpc), depmtime))
else
batchcmds:set_depmtime(depmtime)
end
end
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