[GHC] #13796: hard to embed custom manifest on windows

[GHC]

#13796: hard to embed custom manifest on windows
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           Reporter:  joeyhess          |             Owner:  (none)
               Type:  bug               |            Status:  new
           Priority:  normal            |         Milestone:
          Component:  Compiler          |           Version:  8.0.2
           Keywords:                    |  Operating System:  Windows
       Architecture:  Unknown/Multiple  |   Type of failure:  None/Unknown
          Test Case:                    |        Blocked By:
           Blocking:                    |   Related Tickets:
Differential Rev(s):                    |         Wiki Page:
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 I want to use a custom manifest file on windows to enable long filename
 support. I tried several ghc options to find a way to do it, and it does
 not seem easily possible to do this.

 First I thought, let's use -fno-gen-manifest, and since ghc generates
 foo.exe.manifest when building foo.hs, I'll provide a file with that name
 and it'll pick it up. But it seems that -fno-gen-manifest implies -fno-
 embed-manifest, so it didn't run windres, and this didn't work.

 Then I tried using -optwindres, hoping to pass windres -i foo.rc, and make
 that file point to my custom manifest. But, despite being documented as
 options that are passed to windres, -optwindres actually adds to the end
 of the windres --preprocessor option, so this caused it to run windres
 --preprocessor "gcc.exe ... -i foo.rc"

 The only remaining option seems to be to use -pgmwindres with a wrapper
 program that runs windres with the options I want. It seemed easier to
 file a ghc bug at this point..

 I feel that the best fix would be either to still run windres when -fno-
 gen-manifest is used, or to add a new option like -fuse-custom-manifest-
 file=filename

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13796>
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