Ticket #3347: NoSharedImplib.patch

Fri Jul  3 19:56:22 BST 2009  Max Bolingbroke <batterseapower@hotmail.com>
  * Add the -fno-shared-implib flag

New patches:

[Add the -fno-shared-implib flag
Max Bolingbroke <batterseapower@hotmail.com>**20090703185622
 Ignore-this: cda043c830bc41ab76a26d53e65269b6
] {
hunk ./compiler/main/DriverPipeline.hs 1593
          , SysTools.Option "-o"
          , SysTools.FileOption "" output_fn
          , SysTools.Option "-shared"
-         , SysTools.FileOption "-Wl,--out-implib=" (output_fn ++ ".a")
+         ] ++
+         [ SysTools.FileOption "-Wl,--out-implib=" (output_fn ++ ".a")
+         | dopt Opt_SharedImplib dflags
          ]
         ++ map (SysTools.FileOption "") o_files
         ++ map SysTools.Option (
hunk ./compiler/main/DynFlags.hs 310
    | Opt_PrintBindContents
    | Opt_GenManifest
    | Opt_EmbedManifest
+   | Opt_SharedImplib
 
        -- temporary flags
    | Opt_RunCPS
hunk ./compiler/main/DynFlags.hs 695
 
             Opt_DoAsmMangling,
 
+            Opt_SharedImplib,
+
             Opt_GenManifest,
             Opt_EmbedManifest,
             Opt_PrintBindContents
hunk ./compiler/main/DynFlags.hs 1740
     deprecatedForLanguage "IncoherentInstances" ),
   ( "gen-manifest",                     Opt_GenManifest, const Supported ),
   ( "embed-manifest",                   Opt_EmbedManifest, const Supported ),
+  ( "shared-implib",                    Opt_SharedImplib, const Supported ),
   ( "implicit-import-qualified",        Opt_ImplicitImportQualified, const Supported )
   ]
 
hunk ./docs/users_guide/flags.xml 1809
              <entry>dynamic</entry>
              <entry>-</entry>
            </row>
+           <row>
+             <entry><option>-no-shared-implib</option></entry>
+             <entry>Don't generate an import library for a DLL (Windows only)</entry>
+             <entry>dynamic</entry>
+             <entry>-</entry>
+           </row>
          </tbody>
        </tgroup>
       </informaltable>
hunk ./docs/users_guide/phases.xml 1042
               />).</para>
         </listitem>
       </varlistentry>
+          
+      <varlistentry>
+        <term>
+          <option>-fno-shared-implib</option>
+          <indexterm><primary><option>-fno-shared-implib</option></primary>
+          </indexterm>
+        </term>
+        <listitem>
+          <para>DLLs on Windows are typically linked to by linking to a corresponding
+            <literal>.lib</literal> or <literal>.dll.a</literal> - the so-called import library.
+            GHC will typically generate such a file for every DLL you create by compiling in
+            <literal>-shared</literal> mode. However, sometimes you don't want to pay the
+            disk-space cost of creating this import library, which can be substantial - it
+            might require as much space as the code itself, as Haskell DLLs tend to export
+            lots of symbols.</para>
+            
+          <para>As long as you are happy to only be able to link to the DLL using
+            <literal>GetProcAddress</literal> and friends, you can supply the
+            <option>-fno-shared-implib</option> flag to disable the creation of the import
+            library entirely.</para>
+        </listitem>
+      </varlistentry>
     </variablelist>
   </sect2>
 
}

Context:

[Fix #2197 (properly this time)
Simon Marlow <marlowsd@gmail.com>**20090701122354
 Ignore-this: 39b6e4b0bcdd8c2f4660f976b7db768d
 
 $ ./inplace/bin/ghc-stage2 --interactive
 GHCi, version 6.11.20090701: http://www.haskell.org/ghc/  :? for help
 ghc-stage2: GHCi cannot be used when compiled with -prof
 [1]    32473 exit 1     ./inplace/bin/ghc-stage2 --interactive
] 
[make GhcProfiled work, and add a "prof" flavour to build.mk
Simon Marlow <marlowsd@gmail.com>**20090701114211
 Ignore-this: 386d347e4ad8b6c2bd40a2ba7da31ba6
 
 Building a profiled GHC is as simple as adding
 
 GhcLibWays += p
 GhcProfiled = YES
 
 to your build.mk and saying 'make'.  Then you have a profiled
 inplace/bin/ghc-stage2.
] 
[remove unnecessary $(RM)s
Simon Marlow <marlowsd@gmail.com>**20090701110609
 Ignore-this: f326ec8931d0d484a66b67ce1270cc6e
] 
['make html' in a library builds the Haddock docs
Simon Marlow <marlowsd@gmail.com>**20090630111137
 Ignore-this: 781bf10e2d4bca23b7f70c6f0465d120
] 
[fix GC bug introduced with the C finalizer support
Simon Marlow <marlowsd@gmail.com>**20090630080834
 Ignore-this: 3567e3adb5ae4a5dcbce81733487f348
] 
[Add a configure test for whether or not __mingw_vfprintf exists
Ian Lynagh <igloo@earth.li>**20090627150501] 
[Fix #3319, and do various tidyups at the same time
Simon Marlow <marlowsd@gmail.com>**20090626095421
 Ignore-this: ea54175f6bd49e101d7b33392764f643
  - converting a THSyn FFI declaration to HsDecl was broken; fixed
  - pretty-printing of FFI declarations was variously bogus; fixed
  - there was an unused "library" field in CImport; removed
] 
[rename cache variable to keep recent autoconfs happy
Ross Paterson <ross@soi.city.ac.uk>**20090626131410
 Ignore-this: 187091bbe78f2b14402162acfb98180f
] 
[TAG 2009-06-25
Ian Lynagh <igloo@earth.li>**20090625155528] 
Patch bundle hash:
cf833841f1e514852b7c5dd2378abbfdb7c26a12