move has_flags.lua

1 files changed, 143 insertions, 0 deletions

diff --git a/xmake/modules/core/tools/cosmocc/has_flags.lua b/xmake/modules/core/tools/cosmocc/has_flags.lua
new file mode 100644
index 000000000..51a673a4e
--- /dev/null
+++ b/xmake/modules/core/tools/cosmocc/has_flags.lua
@@ -0,0 +1,143 @@
+--!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        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)
+        detectcache:save()
+    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
+