Remove LANGUAGE pragrams implied by Haskell2010

Haskell2010 implies (at least) EmptyDataDecls, ForeignFunctionInterface,
PatternGuards, DoAndIfThenElse, and RelaxedPolyRec.

This is a follow-up to dd92e2179e3171a0630834b773c08d416101980d

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>

11 files changed, 7 insertions, 16 deletions

diff --git a/compiler/cmm/Hoopl/Dataflow.hs b/compiler/cmm/Hoopl/Dataflow.hs
index 78b930a20f..7105195d3c 100644
--- a/compiler/cmm/Hoopl/Dataflow.hs
+++ b/compiler/cmm/Hoopl/Dataflow.hs
@@ -9,7 +9,7 @@
 -- specialised to the UniqSM monad.
 --
 
-{-# LANGUAGE RankNTypes, ScopedTypeVariables, GADTs, EmptyDataDecls, PatternGuards, TypeFamilies, MultiParamTypeClasses #-}
+{-# LANGUAGE RankNTypes, ScopedTypeVariables, GADTs, TypeFamilies, MultiParamTypeClasses #-}
 {-# OPTIONS_GHC -fprof-auto-top #-}
 {-# LANGUAGE Trustworthy #-}
 
diff --git a/distrib/compare/Makefile b/distrib/compare/Makefile
index f65c0419eb..49645783e2 100644
--- a/distrib/compare/Makefile
+++ b/distrib/compare/Makefile
@@ -2,7 +2,7 @@
 GHC = ghc
 
 compare: *.hs
-	"$(GHC)" -O --make -Wall -Werror $@
+	"$(GHC)" -O -XHaskell2010 --make -Wall -Werror $@
 
 .PHONY: clean
 clean:
diff --git a/distrib/compare/compare.hs b/distrib/compare/compare.hs
index 81055c2826..8653e3f6aa 100644
--- a/distrib/compare/compare.hs
+++ b/distrib/compare/compare.hs
@@ -1,5 +1,3 @@
-{-# LANGUAGE PatternGuards #-}
-
 module Main (main) where
 
 import Control.Monad.State
diff --git a/ghc/Main.hs b/ghc/Main.hs
index d056bf97c4..fcb9bd15a1 100644
--- a/ghc/Main.hs
+++ b/ghc/Main.hs
@@ -1,5 +1,4 @@
 {-# OPTIONS -fno-warn-incomplete-patterns -optc-DNON_POSIX_SOURCE #-}
-{-# LANGUAGE ForeignFunctionInterface #-}
 
 -----------------------------------------------------------------------------
 --
diff --git a/libraries/integer-simple/GHC/Integer/Type.hs b/libraries/integer-simple/GHC/Integer/Type.hs
index 5deecd29bb..cd39b7d6bd 100644
--- a/libraries/integer-simple/GHC/Integer/Type.hs
+++ b/libraries/integer-simple/GHC/Integer/Type.hs
@@ -1,6 +1,5 @@
 
-{-# LANGUAGE CPP, MagicHash, ForeignFunctionInterface,
-             NoImplicitPrelude, BangPatterns, UnboxedTuples,
+{-# LANGUAGE CPP, MagicHash, NoImplicitPrelude, BangPatterns, UnboxedTuples,
              UnliftedFFITypes #-}
 
 -- Commentary of Integer library is located on the wiki:
diff --git a/utils/checkUniques/Makefile b/utils/checkUniques/Makefile
index a7b2df17e2..b017473da3 100644
--- a/utils/checkUniques/Makefile
+++ b/utils/checkUniques/Makefile
@@ -13,4 +13,4 @@ check: checkUniques
 	./checkUniques mkPreludeMiscIdUnique  $(PREL_NAMES) $(DS_META)
 
 checkUniques: checkUniques.hs
-	$(GHC) --make $@
+	$(GHC) -O -XHaskell2010 --make $@
diff --git a/utils/checkUniques/checkUniques.hs b/utils/checkUniques/checkUniques.hs
index d8858dee26..2eda188e3c 100644
--- a/utils/checkUniques/checkUniques.hs
+++ b/utils/checkUniques/checkUniques.hs
@@ -1,5 +1,3 @@
-{-# LANGUAGE PatternGuards #-}
-
 -- Some things could be improved, e.g.:
 -- * Check that each file given contains at least one instance of the
 --   function
diff --git a/utils/dll-split/Main.hs b/utils/dll-split/Main.hs
index c0e370641c..c3f5a15a4a 100644
--- a/utils/dll-split/Main.hs
+++ b/utils/dll-split/Main.hs
@@ -1,6 +1,3 @@
-
-{-# LANGUAGE PatternGuards #-}
-
 module Main (main) where
 
 import Control.Monad
diff --git a/utils/ghc-pkg/Main.hs b/utils/ghc-pkg/Main.hs
index 30acbe2eb8..6bac88b379 100644
--- a/utils/ghc-pkg/Main.hs
+++ b/utils/ghc-pkg/Main.hs
@@ -1,4 +1,4 @@
-{-# LANGUAGE PatternGuards, CPP, ForeignFunctionInterface #-}
+{-# LANGUAGE CPP #-}
 -----------------------------------------------------------------------------
 --
 -- (c) The University of Glasgow 2004-2009.
diff --git a/utils/ghctags/Main.hs b/utils/ghctags/Main.hs
index a67891e16a..815cc7ca18 100644
--- a/utils/ghctags/Main.hs
+++ b/utils/ghctags/Main.hs
@@ -1,4 +1,4 @@
-{-# LANGUAGE PatternGuards, ScopedTypeVariables #-}
+{-# LANGUAGE ScopedTypeVariables #-}
 module Main where
 
 import Prelude hiding ( mod, id, mapM )
diff --git a/utils/runghc/runghc.hs b/utils/runghc/runghc.hs
index 5280cb3344..47a6bc57d5 100644
--- a/utils/runghc/runghc.hs
+++ b/utils/runghc/runghc.hs
@@ -1,4 +1,4 @@
-{-# LANGUAGE CPP, ForeignFunctionInterface #-}
+{-# LANGUAGE CPP #-}
 #include "ghcconfig.h"
 -----------------------------------------------------------------------------
 --