[Haskell-cafe] Cabal files on Windows
jwlato at gmail.com
Fri Aug 1 18:59:31 EDT 2008
On Fri, Aug 1, 2008 at 8:39 AM, Duncan Coutts
<duncan.coutts at worc.ox.ac.uk> wrote:
> On Sun, 2008-07-27 at 21:01 -0500, John Lato wrote:
>> > Use Haskell String syntax for paths that contain spaces:
>> > include-dirs: "C:\\Program Files\\program\\include"
>> Hi Duncan,
>> Thanks, this worked (mostly). Although I had to change the line to
>> include-dirs: "\"C:\\Program Files\\program\\include\""
>> so that the path would be passed properly to cpp through c2hs.
> Thanks for for filing the ticket John.
> Turns out Cabal is doing it right and it's c2hs that we need to fix.
> Shouldn't be too hard. Just need to change the way c2hs invokes cpp in
> let cmd = unwords [cpp, cppOpts, newHeaderFile, ">" ++ preprocFile]
> tracePreproc cmd
> exitCode <- liftIO $ system cmd
> to something like:
> let args = cppOpts ++ [newHeaderFile]
> tracePreproc (unwords (cmd : args))
> exitCode <- liftIO $ do
> preprocHnd <- openFile WriteMode preprocFile
> process <- runProcess cpp args
> Nothing Nothing
> Nothing (Just preprocHnd) Nothing
> waitForProcess process
> Try that, tell me if it works and we can add the patch to the c2hs repo.
I got some compilation errors with this patch. After I changed the
top two lines as follows:
let args = [cppOpts, newHeaderFile] --cppOpts :: String, not [String]
tracePreproc (unwords (cpp:args)) --I think you meant cpp
instead of cmd here
c2hs builds, but I think you can see the problem already. cppOpts
needs to be a list of arguments, rather than one string, to use it
with runProcess. Now running c2hs yields a cpp error about an invalid
argument, specifically "-x c -IC:\\Program Files\include".
I've added a ticket to trac (#11) for this, and included a patch to
fix the problem.
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