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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 export_all.lua
--
-- imports
import("lib.detect.find_tool")
import("core.tool.toolchain")
import("core.base.option")
import("core.base.hashset")
import("core.project.depend")
import("private.utils.progress")
-- export all symbols for dynamic library
function main (target, opt)
-- @note it only supports windows/dll now
assert(target:is_shared(), 'rule("utils.symbols.export_all"): only for shared target(%s)!', target:name())
if not target:is_plat("windows") or option.get("dry-run") then
return
end
-- export all symbols
local allsymbols_filepath = path.join(target:autogendir(), "rules", "symbols", "export_all.def")
local dependfile = allsymbols_filepath .. ".d"
depend.on_changed(function ()
-- trace progress info
progress.show(opt.progress, "${color.build.target}exporting.$(mode) %s", path.filename(target:targetfile()))
-- get dumpbin
local msvc = toolchain.load("msvc", {plat = target:plat(), arch = target:arch()})
local dumpbin = assert(find_tool("dumpbin", {envs = msvc:runenvs()}), "dumpbin not found!")
-- export c++ class?
local export_classes = target:extraconf("rules", "utils.symbols.export_all", "export_classes")
-- get all symbols from object files
local allsymbols = hashset.new()
for _, objectfile in ipairs(target:objectfiles()) do
local objectsymbols = try { function () return os.iorunv(dumpbin.program, {"/symbols", "/nologo", objectfile}) end }
if objectsymbols then
for _, line in ipairs(objectsymbols:split('\n', {plain = true})) do
-- 008 00000000 SECT3 notype () External | add
if line:find("External") then
local symbol = line:match(".*External%s+| (.*)")
if symbol then
symbol = symbol:split('%s')[1]
if not symbol:startswith("__") then
if target:is_arch("x86") and symbol:startswith("_") then
symbol = symbol:sub(2)
end
if export_classes or not symbol:startswith("?") then
if export_classes then
if not symbol:startswith("??_G") and not symbol:startswith("??_E") then
allsymbols:insert(symbol)
end
else
allsymbols:insert(symbol)
end
end
end
end
end
end
end
end
-- export all symbols
if allsymbols:size() > 0 then
local allsymbols_file = io.open(allsymbols_filepath, 'w')
allsymbols_file:print("EXPORTS")
for _, symbol in allsymbols:keys() do
allsymbols_file:print("%s", symbol)
end
allsymbols_file:close()
else
wprint('rule("utils.symbols.export_all"): no symbols are exported for target(%s)!', target:name())
end
end, {dependfile = dependfile, files = target:objectfiles()})
end
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