Building GHC on Windows

[Austin Seipp]

Follow the instructions on the wiki that Kyra linked *exactly*. You
need to properly set your $PATH to contain:

/c/Users/$USER/AppData/Roaming/cabal/bin

If you delete all that stuff and follow those instructions, you should
be able to get running in about 5 minutes. You can copy and paste
every command without problem:

https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Windows/MSYS2

On Thu, Mar 13, 2014 at 6:48 AM, Jan Stolarek <jan.stolarek at p.lodz.pl> wrote:
> Thanks. I installed msys but again I faced the same problem. I solved it by copying mingw
> directory from ghc-7.6.3 distribution to inplace/mingw subdirectory in the source tree. That's
> silly but it works.
>
> Now I have problems with installing alex and happy. I followed steps on wiki page, ie. downloaded
> cabal.exe and added it to path. I can run 'cabal update' and 'cabal install alex happy' but it
> looks like packages are not installed in my home directory (home under msys shell that is). Any
> idea where are they installed so that I can add them to path?
>
> Janek
>
> Dnia czwartek, 13 marca 2014, kyra napisał:
>> On 3/13/2014 13:18, Jan Stolarek wrote:
>> > I'm trying to build GHC on 64-bit Windows 7. I installed Cygwin, GHC and
>> > cloned the main repo but when I run configure I get this error:
>> >
>> > configure: Building in-tree ghc-pwd
>> > checking for path to top of build tree... cygwin warning:
>> >    MS-DOS style path detected: C:/cygwin64/home/tewi/head
>> >    Preferred POSIX equivalent is: /home/tewi/head
>> >    CYGWIN environment variable option "nodosfilewarning" turns off this
>> > warning. Consult the user's guide for more details about POSIX paths:
>> >      http://cygwin.com/cygwin-ug-net/using.html#using-pathnames
>> > C:/cygwin64/home/tewi/head
>> > checking for gcc... C:/cygwin64/home/tewi/head/inplace/mingw/bin/gcc.exe
>> > checking whether the C compiler works... no
>> > configure: error: in `/home/tewi/head':
>> > configure: error: C compiler cannot create executables
>> > See `config.log' for more details
>> >
>> > I have gcc installed under Cygwin, but for some reason ./configure is
>> > looking for an in-tree compiler. I tried passing --with-gcc=/usr/bin/gcc
>> > to configure but with no result. Help?
>> >
>> > Janek
>> >
>> > _______________________________________________
>> > ghc-devs mailing list
>> > ghc-devs at haskell.org
>> > http://www.haskell.org/mailman/listinfo/ghc-devs
>>
>> Windows GHC *shall* use in-tree compiler. Windows GHC does *not* use
>> cygwin runtime at all!
>>
>> Now the best way to build GHC on Windows is to use MSYS2:
>> https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Windows/MSYS2.
>>
>> I'd also add that most recent versions are
>>
>> http://sourceforge.net/projects/msys2/files/Base/i686/msys2-base-i686-20140
>>216.tar.xz/download for 32-bit windows,
>>
>> and
>>
>> http://sourceforge.net/projects/msys2/files/Base/x86_64/msys2-base-x86_64-2
>>0140216.tar.xz/download for 64-bit windows.
>>
>> Please, take into account this is *build environment* and in no way is
>> related to gcc compiler and runtime used by GHC on Windows.
>>
>> Cheers,
>> Kyra
>>
>> _______________________________________________
>> ghc-devs mailing list
>> ghc-devs at haskell.org
>> http://www.haskell.org/mailman/listinfo/ghc-devs
>
>
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-- 
Regards,

Austin Seipp, Haskell Consultant
Well-Typed LLP, http://www.well-typed.com/