1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
--!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, table.join(opt or {}, {shell = true}))
return true
end, catch { function (errs) errors = (errs or ""):trim() end }}, errors
end
-- attempt to check it from known flags
function _check_from_knownargs(flags, opt, islinker)
local flag = flags[1]
if not islinker then
if flag:startswith("-D") or
flag:startswith("-U") or
flag:startswith("-I") then
return true
end
end
end
-- attempt to check it from the argument list
function _check_from_arglist(flags, opt, islinker)
local key = "core.tools.cosmocc." .. (islinker and "has_ldflags" or "has_cflags")
local flagskey = opt.program .. "_" .. (opt.programver or "")
local allflags = detectcache:get2(key, flagskey)
if not allflags then
allflags = {}
local arglist = try {function () return os.iorunv(opt.program, {islinker and "-Wl,--help" or "--help"}, {envs = opt.envs, shell = true}) end}
if arglist then
for arg in arglist:gmatch("%s+(%-[%-%a%d]+)%s+") do
allflags[arg] = true
end
end
detectcache:set2(key, flagskey, allflags)
end
local flag = flags[1]
if islinker and flag then
if flag:startswith("-Wl,") then
flag = flag:match("-Wl,(.-),") or flag:sub(5)
end
end
return allflags[flag]
end
-- get extension
function _get_extension(opt)
-- @note we need to detect extension for ndk/clang++.exe: warning: treating 'c' input as 'c++' when in C++ mode, this behavior is deprecated [-Wdeprecated]
return (opt.program:endswith("++") or opt.flagkind == "cxxflags") and ".cpp" or (table.wrap(language.sourcekinds()[opt.toolkind or "cc"])[1] or ".c")
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("cosmocc_has_flags:" .. snippet) .. _get_extension(opt)
if not os.isfile(sourcefile) then
io.writefile(sourcefile, snippet)
end
if is_host("windows") then
sourcefile = sourcefile:gsub("\\", "/")
end
-- check flags for linker
local tmpfile = os.tmpfile()
if is_host("windows") then
tmpfile = tmpfile:gsub("\\", "/")
end
if islinker then
return _try_running(opt.program, table.join(flags, "-o", tmpfile, sourcefile), opt)
end
-- check flags for compiler
-- @note we cannot use os.nuldev() as the output file, maybe run failed for some flags, e.g. --coverage
return _try_running(opt.program, table.join(flags, "-o", tmpfile, sourcefile), opt)
end
-- has_flags(flags)?
--
-- @param opt the argument options, e.g. {toolname = "", program = "", programver = "", toolkind = "[cc|cxx|ld|ar|sh|gc|mm|mxx]"}
--
-- @return true or false
--
function main(flags, opt)
-- is linker?
opt = opt or {}
local islinker = _islinker(flags, opt)
-- attempt to check it from the argument list
if not opt.tryrun then
if _check_from_arglist(flags, opt, islinker) then
return true
end
if _check_from_knownargs(flags, opt, islinker) then
return true
end
end
-- try running to check it
return _check_try_running(flags, opt, islinker)
end
|
