[commit: ghc] master: Don't pass -Wimplicit to the C++ compiler. (a0e308d)

[Paolo Capriotti]

Repository : ssh://darcs.haskell.org//srv/darcs/ghc

On branch  : master

http://hackage.haskell.org/trac/ghc/changeset/a0e308de485bdb275008a40de9c76c31230e6c51

>---------------------------------------------------------------

commit a0e308de485bdb275008a40de9c76c31230e6c51
Author: Austin Seipp <mad.one at gmail.com>
Date:   Sun Aug 5 03:26:45 2012 -0500

    Don't pass -Wimplicit to the C++ compiler.
    
    Supresses an ugly warning from gcc 4.6+ saying this is a C/ObjC flag
    only.
    
    Signed-off-by: Austin Seipp <mad.one at gmail.com>

>---------------------------------------------------------------

 compiler/main/DriverPipeline.hs |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/compiler/main/DriverPipeline.hs b/compiler/main/DriverPipeline.hs
index 5dd24c4..3bed3d0 100644
--- a/compiler/main/DriverPipeline.hs
+++ b/compiler/main/DriverPipeline.hs
@@ -1118,11 +1118,16 @@ runPhase cc_phase input_fn dflags
                            then ["-mcpu=v9"]
                            else [])
 
+                       -- GCC 4.6+ doesn't like -Wimplicit when compiling C++.
+                       ++ (if (cc_phase /= Ccpp && cc_phase /= Cobjcpp)
+                             then ["-Wimplicit"]
+                             else [])
+
                        ++ (if hcc
                              then gcc_extra_viac_flags ++ more_hcc_opts
                              else [])
                        ++ verbFlags
-                       ++ [ "-S", "-Wimplicit", cc_opt ]
+                       ++ [ "-S", cc_opt ]
                        ++ [ "-D__GLASGOW_HASKELL__="++cProjectVersionInt ]
                        ++ framework_paths
                        ++ cc_opts