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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) 2015-2020, TBOOX Open Source Group.
--
-- @author ruki
-- @file has_features.lua
--
-- imports
import("core.base.option")
import("lib.detect.features", {alias = "get_features"})
-- has the given features for the current tool?
--
-- @param name the tool name
-- @param features the features
-- @param opt the argument options, e.g. {verbose = false, flags = {}, program = ""}}
--
-- @return the supported features or nil
--
-- @code
-- local features = has_features("clang", "cxx_constexpr")
-- local features = has_features("clang", {"cxx_constexpr", "c_static_assert"}, {flags = {"-g", "-O0"}, program = "xcrun -sdk macosx clang"})
-- local features = has_features("clang", {"cxx_constexpr", "c_static_assert"}, {flags = "-g"})
-- @endcode
--
function main(name, features, opt)
-- init options
opt = opt or {}
-- get all features
local all = get_features(name, opt) or {}
-- get results
local results = nil
for _, feature in ipairs(features) do
if all[feature] then
results = results or {}
table.insert(results, feature)
end
end
-- ok?
return results
end
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