> Can you link cpp to some cpp.exe and try again? That would at least
> pin down the cause.
I don't think I understand. I do have a cpp on the path already.
I think (at least one) problem could be that ghc-pkg's $topdir is being
expanded to a filepath finishing in \ghc-6.12.1, instead of a path
finishing in \ghc-6.12.1\lib. I'm not sure which tool is responsible
for that expansion going wrong.
For instance,
$ ghc-pkg field haskell98 import-dirs
import-dirs: C:/workspace/ext/ghc-6.12.1\lib\haskell98-1.0.1.1
But
$ cabal build -v
C:\workspace\ext\bin\gtk2hsC2hs.exe --include=dist\build ...
--include=C:\workspace\ext\ghc-6.12.1\haskell98-1.0.1.1
Another problem is that the cabal-generated commandline for gtk2hsC2hs
uses Windows-style backslashes for relative filepaths. This seems like
a very weird interaction with MinGW. If I manually convert the
commandline from
C:\workspace\ext\bin\gtk2hsC2hs.exe --include=dist\build
--include=C:\workspace\ext\ghc-6.12.1\base-4.2.0.0
--include=C:\workspace\ext\ghc-6.12.1\containers-0.3.0.0
--include=C:\workspace\ext\ghc-6.12.1\haskell98-1.0.1.1
--cppopts=-ISystem/Glib
--cppopts=-IC:/msys/1.0/local/include/glib-2.0
--cppopts=-IC:/msys/1.0/local/lib/glib-2.0/include
--cppopts=-DUSE_GCLOSURE_SIGNALS_IMPL
--cppopts=-DHAVE_NEW_CONTROL_EXCEPTION
--output-dir=dist\build\System\Glib
--output=System\Glib\Properties.hs
--precomp=dist\build\precompchs.bin
glib-object.h .\System\Glib\Properties.chs
to
C:/workspace/ext/bin/gtk2hsC2hs.exe --include=dist/build
--include=C:\workspace\ext\ghc-6.12.1\base-4.2.0.0
--include=C:\workspace\ext\ghc-6.12.1\containers-0.3.0.0
--include=C:\workspace\ext\ghc-6.12.1\haskell98-1.0.1.1
--cppopts=-ISystem/Glib
--cppopts=-IC:/msys/1.0/local/include/glib-2.0
--cppopts=-IC:/msys/1.0/local/lib/glib-2.0/include
--cppopts=-DUSE_GCLOSURE_SIGNALS_IMPL
--cppopts=-DHAVE_NEW_CONTROL_EXCEPTION
--output-dir=dist/build/System/Glib
--output=System/Glib/Types.hs
--precomp=dist\build\precompchs.bin
glib-object.h ./System/Glib/Types.chs
(noting that I did not convert the slashes in all paths, just some),
then this command completes without an error message. Whether its
output is correct is entirely another matter, but I can't check that
right now.
Regards,
Malcolm
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