-- Copyright 2012-2014 Samplecount S.L.
--
-- 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.

module Development.Shake.Language.C.Host.Linux (
  getHostToolChain
) where

import Development.Shake
import Development.Shake.Language.C.Target
import Development.Shake.Language.C.Target.Linux
import Development.Shake.Language.C.ToolChain
import System.Process (readProcess)

-- | Get host architecture.
getHostArch :: IO Arch
getHostArch = do
    arch <- fmap (head.lines) $ readProcess "uname" ["-m"] ""
    return $ case arch of
        "i386" -> X86 I386
        "i686" -> X86 I686
        "x86_64" -> X86 X86_64
        "armv7l" -> Arm Armv7
        _ -> error $ "Unknown host architecture " ++ arch

-- | Get host toolchain.
getHostToolChain :: IO (Target, Action ToolChain)
getHostToolChain = do
    t <- fmap target getHostArch
    return (t, return $ toolChain GCC)