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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 has_flags.lua
--
-- imports
import("core.cache.detectcache")
import("core.language.language")
-- is linker?
function _islinker(flags, opt)
-- the flags is "-Wl,<arg>" or "-Xlinker <arg>"?
local flags_str = table.concat(flags, " ")
if flags_str:startswith("-Wl,") or flags_str:startswith("-Xlinker ") then
return true
end
-- the tool kind is ld or sh?
local toolkind = opt.toolkind or ""
return toolkind == "ld" or toolkind == "sh" or toolkind:endswith("-ld") or toolkind:endswith("-sh")
end
-- try running
function _try_running(program, argv, opt)
local errors = nil
return try { function () os.runv(program, argv, opt); return true end, catch { function (errs) errors = (errs or ""):trim() end }}, errors
end
-- attempt to check it from the argument list
function _check_from_arglist(flags, opt, islinker)
-- check for the builtin flags
local builtin_flags = {["-code"] = true,
["--gpu-code"] = true,
["-gencode"] = true,
["--generate-code"] = true,
["-arch"] = true,
["--gpu-architecture"] = true,
["-cudart=none"] = true,
["--cudart=none"] = true}
if builtin_flags[flags[1]] then
return true
end
-- check for the builtin flag=value
local cudart_flags = {none = true, shared = true, static = true}
local builtin_flags_pair = {["-cudart"] = cudart_flags,
["--cudart"] = cudart_flags}
if #flags > 1 and builtin_flags_pair[flags[1]] and builtin_flags_pair[flags[1]][flags[2]] then
return true
end
-- check from the `--help` menu, only for linker
if islinker or #flags > 1 then
return
end
-- make cache key
local key = "core.tools.nvcc.has_flags"
-- make flags key
local flagskey = opt.program .. "_" .. (opt.programver or "")
-- get all flags from argument list
local allflags = detectcache:get2(key, flagskey)
if not allflags then
-- get argument list
allflags = {}
local arglist = os.iorunv(opt.program, {"--help"})
if arglist then
for arg in arglist:gmatch("%s+(%-[%-%a%d]+)%s+") do
allflags[arg] = true
end
end
-- save cache
detectcache:set2(key, flagskey, allflags)
end
return allflags[flags[1]]
end
-- try running to check flags
function _check_try_running(flags, opt, islinker)
-- make an stub source file
local snippet = opt.snippet or "int main(int argc, char** argv)\n{return 0;}\n"
local sourcefile = os.tmpfile("nvcc_has_flags:" .. snippet) .. ".cu"
if not os.isfile(sourcefile) then
io.writefile(sourcefile, snippet)
end
local args = table.join("-o", os.nuldev(), sourcefile)
if not islinker then
table.insert(args, 1, "-c")
end
-- avoid recursion
if flags[1] ~= "-allow-unsupported-compiler" then
-- add -allow-unsupported-compiler if supported to suppress error of unsupported compiler,
-- which caused all checks failed.
local allow_unsupported_compiler = _has_flags({"-allow-unsupported-compiler"}, opt)
if allow_unsupported_compiler then
table.insert(args, 1, "-allow-unsupported-compiler")
end
end
-- add architecture flags if cross compiling
if not is_arch(os.arch()) then
if is_arch(".+64.*") then
table.insert(args, 1, "-m64")
else
table.insert(args, 1, "-m32")
end
end
-- check flags
return _try_running(opt.program, table.join(flags, args), opt)
end
-- has_flags(flags)?
--
-- @param opt the argument options, e.g. {toolname = "", program = "", programver = "", toolkind = "cu"}
--
-- @return true or false
--
function _has_flags(flags, opt)
-- is linker?
local islinker = _islinker(flags, opt)
-- attempt to check it from the argument list
if _check_from_arglist(flags, opt, islinker) then
return true
end
-- try running to check it
return _check_try_running(flags, opt, islinker)
end
function main(...)
return _has_flags(...)
end
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