Windows

[Shao, Cheng]

Hi Simon,

Running “C:\msys64\msys2_shell.cmd -mingw64 -mintty" has the same effect as
clicking on the "MinGW-w64 Win64 Shell" shortcut. It is the proper way to
start an mingw64 shell. If you have run "pacman -S" to update the MSYS2
packages before, then the old shortcuts setup by the MSYS2 installer may
cease to function, and you can put a new shortcut on your desktop with that
command.

On Mon, Mar 26, 2018 at 6:02 PM, Simon Peyton Jones <simonpj at microsoft.com>
wrote:

> If the build environment is managed by an MSYS2 installation, then the
> MinGW64 shell startup script automatically sets up "MSYSTEM" for you. It
> can be launched like "C:\msys64\msys2_shell.cmd -mingw64 -mintty".
>
> Well I just followed the Method A instructions at
>
> https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Windows
>
>
>
> Are you saying that I should run “C:\msys64\msys2_shell.cmd -mingw64
> -mintty" just once, after installing?  Or repeatedly?  Or that I should
> somehow us it as my main shell?  And what does that commend actually do?
>
> Sorry to be dense
>
>
>
> Simon
>
>
>
> *From:* ghc-devs <ghc-devs-bounces at haskell.org> *On Behalf Of *Shao, Cheng
> *Sent:* 26 March 2018 10:59
> *To:* ghc-devs at haskell.org
> *Subject:* Re: Windows
>
>
>
> Hi Simon,
>
>
>
> If the build environment is managed by an MSYS2 installation, then the
> MinGW64 shell startup script automatically sets up "MSYSTEM" for you. It
> can be launched like "C:\msys64\msys2_shell.cmd -mingw64 -mintty".
>
>
>
> On Mon, Mar 26, 2018 at 5:46 PM, Simon Peyton Jones via ghc-devs <
> ghc-devs at haskell.org> wrote:
>
> Making it part of the error message would be v helpful.
>
> I have added a section to "Troubleshooting" on
> https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Windows
>
> But it should really be part of the instructions higher up to sa
>         export MSYSTEM=MINGW64
>
> Might someone do that?  I wasn't quite sure where
>
> Simon
>
>
> |  -----Original Message-----
> |  From: ghc-devs <ghc-devs-bounces at haskell.org> On Behalf Of Ben Gamari
> |  Sent: 24 March 2018 16:42
> |  To: Gabor Greif <ggreif at gmail.com>; lonetiger at gmail.com
> |  Cc: ghc-devs at haskell.org
> |  Subject: Re: Windows
> |
> |  Gabor Greif <ggreif at gmail.com> writes:
> |
> |  > Just an idea...
> |  >
> |  > could this hint be part of the `configure` error message?
> |  >
> |  Indeed. See D4526.
> |
> |  Cheers,
> |
> |  - Ben
>
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>
>
>
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