add -optcxx-std=c++11 when GHC >= 8.10

Author: Dong Han

Setup.hs

@@ -1,9 +1,14 @@
+{-# LANGUAGE CPP #-}
 import           Distribution.Simple
 import           System.Environment
 
 main = do
+#if __GLASGOW_HASKELL__ < 810
+  defaultMain
+#else
   args <- getArgs
   if head args == "configure"
      then defaultMainArgs $ [ "--ghc-options", "-optcxx-std=c++11"
                             ] ++ args
-     else defaultMain
+     else defaultMain
+#endif