add check_cflags and check_cxxflags help functions

1 files changed, 67 insertions, 0 deletions

diff --git a/xmake/includes/check_cflags.lua b/xmake/includes/check_cflags.lua
new file mode 100644
index 000000000..b0028d499
--- /dev/null
+++ b/xmake/includes/check_cflags.lua
@@ -0,0 +1,67 @@
+--!A cross-platform build utility based on Lua
+--
+-- Licensed to the Apache Software Foundation (ASF) under one
+-- or more contributor license agreements.  See the NOTICE file
+-- distributed with this work for additional information
+-- regarding copyright ownership.  The ASF licenses this file
+-- to you 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 - 2019, TBOOX Open Source Group.
+--
+-- @author      ruki
+-- @file        check_cflags.lua
+--
+
+-- check c flags and add macro definition 
+--
+-- e.g.
+--
+-- check_cflags("HAS_SSE2", "-msse2")
+-- check_cflags("HAS_SSE2", {"-msse2", "/arch:SSE2"})
+--
+function check_cflags(definition, flags, opt)
+    opt = opt or {}
+    local optname = "__" .. (opt.name or definition)
+    option(optname)
+        add_defines(definition)
+        on_check(function (option)
+            import("core.tool.compiler")
+            if compiler.has_flags("c", flags, opt) then
+                option:enable(true)
+            end
+        end)
+    option_end()
+    add_options(optname)
+end
+
+-- check c flags and add macro definition to the configuration flags 
+--
+-- e.g.
+--
+-- configvar_check_cflags("HAS_SSE2", "-msse2")
+-- configvar_check_cflags("HAS_SSE2", {"-msse2", "/arch:SSE2"})
+--
+function configvar_check_cflags(definition, flags, opt)
+    opt = opt or {}
+    local optname = "__" .. (opt.name or definition)
+    option(optname)
+        set_configvar(definition, 1)
+        on_check(function (option)
+            import("core.tool.compiler")
+            if compiler.has_flags("c", flags, opt) then
+                option:enable(true)
+            end
+        end)
+    option_end()
+    add_options(optname)
+end