Latest Haskell Platform for Windows (2010.1.0.0) does not seem to include C++ support
Hi list, I've just been helping out a wxHaskell user who has been having problems installing the latest wxHaskell on Windows 7 with the latest haskell Platform. As background, wxHaskell contains a substantial C++ wrapper which is normally compiled from the Cabal script. On Windows machines, this has the result that the GHC internal copy of MinGW is used for compilation. I'm getting the following error: "realgcc.exe: installation problem - cannot exec 'cc1plus': no such file or directory" On checking, Haskell Platform\2010.1.0.0\mingw\libexec\gcc\mingw32\3.4.5 does not contain cc1plus.exe. Previous versions of the platform have done so. Is this an accidental change or a deliberate policy decision? Is there any way to persuade cabal to use another C++ compiler (I have a perfectly good copy of MinGW g++ elsewhere on my machine). Regards Jeremy O'Donoghue -- Jeremy O'Donoghue jeremy.odonoghue@gmail.com
On Tue, 2010-05-04 at 12:53 +0100, Jeremy O'Donoghue wrote:
Hi list,
I've just been helping out a wxHaskell user who has been having problems installing the latest wxHaskell on Windows 7 with the latest haskell Platform.
As background, wxHaskell contains a substantial C++ wrapper which is normally compiled from the Cabal script. On Windows machines, this has the result that the GHC internal copy of MinGW is used for compilation.
I'm getting the following error:
"realgcc.exe: installation problem - cannot exec 'cc1plus': no such file or directory"
On checking, Haskell Platform\2010.1.0.0\mingw\libexec\gcc\mingw32\3.4.5 does not contain cc1plus.exe. Previous versions of the platform have done so. Is this an accidental change or a deliberate policy decision? Is there any way to persuade cabal to use another C++ compiler (I have a perfectly good copy of MinGW g++ elsewhere on my machine).
Regards Jeremy O'Donoghue
Personally I believe there should be option with unbundled mingw (unless it, which I don't think is a case except C++ in which GHC is not written in, there are problems with mixing gcc versions). I find myself with installed few different version of gcc/msys/perl/tcl/... in system just because each program installs its own copy. I'm even thinking about writing package manager for Windows to handle the bundling problem but I don't think it'll succeed (Windows is not my primary OS). Regards
"realgcc.exe: installation problem - cannot exec 'cc1plus': no such file or directory"
On checking, Haskell Platform\2010.1.0.0\mingw\libexec\gcc \mingw32\3.4.5 does not contain cc1plus.exe. Previous versions of the platform have done so. Is this an accidental change or a deliberate policy decision?
ghc-6.12.1 on Windows did not include the mingw C++ compiler. This was a mistake. It is included once more in ghc-6.12.2. Regards, Malcolm
Hi
On checking, Haskell Platform\2010.1.0.0\mingw\libexec\gcc\mingw32\3.4.5 does not contain cc1plus.exe. Previous versions of the platform have done so. Is this an accidental change or a deliberate policy decision?
ghc-6.12.1 on Windows did not include the mingw C++ compiler. This was a mistake. It is included once more in ghc-6.12.2.
ghc-6.12.1 didn't include cc1plus.exe or libstdc++.a. The lack of libstdc++.a caused a failure in something I was building, so I raised a bug and it's now included in 6.12.2. I didn't explicitly compile any C++ code, so it's possible that still doesn't work. It wasn't a policy decision, merely an accident, and I'm sure if you alert people it will be rectified (since otherwise it's a regression). Thanks, Neil
Hi list(s), (Apologies for cross-posting, but likely to be of interest to both lists) As lack of C++ support on latest Haskell Platform prevents wxHaskell cabal install for Windows, and may well be causing issues for others, I present a vile hack which will get you some level of working C++ support. This has been verified to work on a Windows 7 machine. You will need a clean MinGW 3.4.5 installation (I used the current Windows MinGW installer to get this, but many of you probably have MinGW lying around anyway) as a source for the files below: Copy cc1plus.exe from a MinGW 3.4.5 install into c:\Program Files (x86)\Haskell Platform\2010.1.0.0\mingw\libexec\gcc\mingw32\3.4.5 Copy libstdc++.a from a MinGW 3.4.5 install into c:\Program Files (x86)\Haskell Platform\2010.1.0.0\mingw\lib Copy the entire contents of include\c++ directory from a MinGW 3.4.5 install into c:\Program Files (x86)\Haskell Platform\2010.1.0.0\mingw\include\c++ At this point you have a sufficient C++ environment to cabal install wx and get a working wxHaskell installation. There are a number of files missing from a complete MinGW C++ installation, so I don't guarantee this as working for all C++ code. On Windows 7, you will need to do your 'cabal install wx' in a command window running as Administrator. 'cabal install wx --user' does not work in a normal shell. I'll look into this later. Regards Jeremy On Tue, 04 May 2010 22:18 +0100, "Neil Mitchell" <ndmitchell@gmail.com> wrote:
Hi
On checking, Haskell Platform\2010.1.0.0\mingw\libexec\gcc\mingw32\3.4.5 does not contain cc1plus.exe. Previous versions of the platform have done so. Is this an accidental change or a deliberate policy decision?
ghc-6.12.1 on Windows did not include the mingw C++ compiler. This was a mistake. It is included once more in ghc-6.12.2.
ghc-6.12.1 didn't include cc1plus.exe or libstdc++.a. The lack of libstdc++.a caused a failure in something I was building, so I raised a bug and it's now included in 6.12.2. I didn't explicitly compile any C++ code, so it's possible that still doesn't work.
It wasn't a policy decision, merely an accident, and I'm sure if you alert people it will be rectified (since otherwise it's a regression).
Thanks, Neil
-- Jeremy O'Donoghue jeremy.odonoghue@gmail.com
participants (4)
-
Jeremy O'Donoghue -
Maciej Piechotka -
Malcolm Wallace -
Neil Mitchell