Problems with building GHC 7.8.3 on Windows

Marek Wawrzos marek.28.93 at
Tue Sep 2 09:26:18 UTC 2014

I have finally builded GHC 7.8.3 on Windows. The wiki page with MSYS2 that
you linked to proved to be useful reference. Indeed using the latest 64 bit
MSYS2 as building environment solved my problems. However there are some
issues with the instructions presented:
-- the MSYS2 package that is linked to in the page fails to initial update.
Using the latest official MSYS2 package does solve that ( );
-- initial update has to be done along the instructions from ;
There are some error outputs during initial update but they do not seem to
cause any harm
I thing it might be a good idea to give stronger encouragement to use MSYS2
on the page with Windows-specific instructions. It suggests that old MSYS
can be used successfully while it apparently fails and is not supported.

2014-08-29 17:59 GMT+02:00 kyra <kyrab at>:

> 1. I see you've set ticket's 'Architecture' field to be 'x86_64' while
> make output suggests you try to build 32-bit ghc.
> 2. You are using 'old' MSys which is known to be problematic when building
> GHC. It's much better to use MSYS2 now:
> ghc/wiki/Building/Preparation/Windows/MSYS2.
> Also, remember, MSYS2 is only a *build environment*, so you can use 64-bit
> MSYS2 to build 32-bit GHC on 64-bit Windows. My experience is that 64-bit
> MSYS2 is more solid and stable than 32-bit MSYS2. And it's extremely
> important to remember you must *not* use msys2_shell.bat to start MSYS2
> shell, only mingwXX_shell.bat (XX stands for 32 or 64) shall be used to
> start MSYS2 shell -- otherwise GHC make system would not recognize build
> triplet.
> Cheers,
> Kyra
> On 8/29/2014 17:50, Marek Wawrzos wrote:
>> Hello,
>> I am trying to compile GHC 7.8.3 on Windows. I was following the
>> instructions from the GHC wiki, but I have encountered errors during the
>> make process.
>> I have filed a bug report describing my issue:
>> Does anyone had working setup for building GHC and would be willing to
>> share information on how to achieve it?
>> --
>> Best regards,
>> Marek Wawrzos
>> _______________________________________________
>> ghc-devs mailing list
>> ghc-devs at
> _______________________________________________
> ghc-devs mailing list
> ghc-devs at

Z poważaniem,
Marek Wawrzos
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