Generate the bit in the user guide where we say what -fglasgow-exts does

[ghc-hetmet.git] / compiler / main / DynFlags.hs

diff --git a/compiler/main/DynFlags.hs b/compiler/main/DynFlags.hs
index 6c3ea22..2e7e1fe 100644 (file)
--- a/compiler/main/DynFlags.hs
+++ b/compiler/main/DynFlags.hs
@@ -17,6 +17,7 @@ module DynFlags (
         DOpt(..),
         DynFlag(..),
         ExtensionFlag(..),
+        glasgowExtsFlags,
         flattenExtensionFlags,
         ensureFlattenedExtensionFlags,
         lopt_set_flattened,
@@ -1176,8 +1177,9 @@ parseDynamicFlags_ dflags0 args pkg_flags = do
                 dflags1{ hscTarget = HscAsm })
 #if !(x86_64_TARGET_ARCH && linux_TARGET_OS)
         | (not opt_Static || opt_PIC) && hscTarget dflags1 == HscLlvm
-        = ([L noSrcSpan $ "Warning: -fllvm is incompatible with -fPIC and -dynamic on this"
-                ++ "platform; ignoring -fllvm"], dflags1{ hscTarget = HscAsm })
+        = ([L noSrcSpan $ "Warning: -fllvm is incompatible with -fPIC and -"
+                ++ "dynamic on this platform;\n              ignoring -fllvm"],
+                dflags1{ hscTarget = HscAsm })
 #endif
         | otherwise = ([], dflags1)
 
@@ -2137,7 +2139,12 @@ setOptHpcDir arg  = upd $ \ d -> d{hpcDir = arg}
 
 machdepCCOpts :: DynFlags -> ([String], -- flags for all C compilations
                               [String]) -- for registerised HC compilations
-machdepCCOpts _dflags
+machdepCCOpts dflags = let (flagsAll, flagsRegHc) = machdepCCOpts' dflags
+                       in (cCcOpts ++ flagsAll, flagsRegHc)
+
+machdepCCOpts' :: DynFlags -> ([String], -- flags for all C compilations
+                               [String]) -- for registerised HC compilations
+machdepCCOpts' _dflags
 #if alpha_TARGET_ARCH
         =       ( ["-w", "-mieee"
 #ifdef HAVE_THREADED_RTS_SUPPORT
@@ -2172,19 +2179,9 @@ machdepCCOpts _dflags
       --   the fp (%ebp) for our register maps.
         =  let n_regs = stolen_x86_regs _dflags
            in
-                    ( 
-#if darwin_TARGET_OS
-                      -- By default, gcc on OS X will generate SSE
-                      -- instructions, which need things 16-byte aligned,
-                      -- but we don't 16-byte align things. Thus drop
-                      -- back to generic i686 compatibility. Trac #2983.
-                      --
-                      -- Since Snow Leopard (10.6), gcc defaults to x86_64.
-                      ["-march=i686", "-m32"],
-#else
+                    (
                       [ if opt_Static then "-DDONT_WANT_WIN32_DLL_SUPPORT" else ""
                       ],
-#endif
                       [ "-fno-defer-pop",
                         "-fomit-frame-pointer",
                         -- we want -fno-builtin, because when gcc inlines
@@ -2199,11 +2196,7 @@ machdepCCOpts _dflags
 
 #elif x86_64_TARGET_ARCH
         = (
-#if darwin_TARGET_OS
-            ["-m64"],
-#else
-            [],
-#endif
+                [],
                 ["-fomit-frame-pointer",
                  "-fno-asynchronous-unwind-tables",
                         -- the unwind tables are unnecessary for HC code,