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<p class="MsoNormal" style="margin-left:36.0pt">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.<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Interesting. Most shells are started by ‘make’. I think it uses the SHELL envt variable to decide what to start. Currently I have that set to<o:p></o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoListParagraph" style="margin-left:2.5pt;mso-list:l0 level1 lfo1"><span style="font-size:12.0pt">c:/msys64/usr/bin/bash<o:p></o:p></span></li></ul>
<p class="MsoNormal"><span style="font-size:12.0pt">Are you saying that I should put<o:p></o:p></span></p>
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<li class="MsoListParagraph" style="margin-left:2.5pt;mso-list:l0 level1 lfo1">C:\msys64\msys2_shell.cmd -mingw64 -mintty<span style="font-size:12.0pt"><o:p></o:p></span></li></ul>
<p class="MsoNormal"><span style="font-size:12.0pt">into my SHELL envt variable?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">(Also: I always a shell within emacs, rather that an msys window, and it uses SHELL to decide what to run.)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Also: is this related to the <o:p>
</o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"> </span>export MSYSTEM=MINGW64<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt">question?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Simon<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> ghc-devs <ghc-devs-bounces@haskell.org>
<b>On Behalf Of </b>Shao, Cheng<br>
<b>Sent:</b> 26 March 2018 11:07<br>
<b>To:</b> ghc-devs@haskell.org<br>
<b>Subject:</b> Re: Windows<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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Hi Simon,<o:p></o:p></p>
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<o:p> </o:p></p>
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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.<o:p></o:p></p>
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<o:p> </o:p></p>
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On Mon, Mar 26, 2018 at 6:02 PM, Simon Peyton Jones <<a href="mailto:simonpj@microsoft.com" target="_blank">simonpj@microsoft.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt;margin-left:36.0pt">
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".<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt">Well I just followed the Method A instructions at
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"><a href="https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Windows" target="_blank">https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Windows</a></span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt"><span style="font-size:12.0pt">Are you saying that I should run “</span>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?<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt">Sorry to be dense</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt">Simon</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> ghc-devs <<a href="mailto:ghc-devs-bounces@haskell.org" target="_blank">ghc-devs-bounces@haskell.org</a>>
<b>On Behalf Of </b>Shao, Cheng<br>
<b>Sent:</b> 26 March 2018 10:59<br>
<b>To:</b> <a href="mailto:ghc-devs@haskell.org" target="_blank">ghc-devs@haskell.org</a><br>
<b>Subject:</b> Re: Windows</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt">Hi Simon,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt">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".<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt">On Mon, Mar 26, 2018 at 5:46 PM, Simon Peyton Jones via ghc-devs <<a href="mailto:ghc-devs@haskell.org" target="_blank">ghc-devs@haskell.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt">Making it part of the error message would be v helpful.<br>
<br>
I have added a section to "Troubleshooting" on<br>
<a href="https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Windows" target="_blank">https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Windows</a><br>
<br>
But it should really be part of the instructions higher up to sa<br>
export MSYSTEM=MINGW64<br>
<br>
Might someone do that? I wasn't quite sure where<br>
<span style="color:#888888"><br>
<span class="gmail-m-7675528512131772252gmail-hoenzb">Simon</span></span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><br>
| -----Original Message-----<br>
| From: ghc-devs <<a href="mailto:ghc-devs-bounces@haskell.org" target="_blank">ghc-devs-bounces@haskell.org</a>> On Behalf Of Ben Gamari<br>
| Sent: 24 March 2018 16:42<br>
| To: Gabor Greif <<a href="mailto:ggreif@gmail.com" target="_blank">ggreif@gmail.com</a>>;
<a href="mailto:lonetiger@gmail.com" target="_blank">lonetiger@gmail.com</a><br>
| Cc: <a href="mailto:ghc-devs@haskell.org" target="_blank">ghc-devs@haskell.org</a><br>
| Subject: Re: Windows<br>
|<br>
| Gabor Greif <<a href="mailto:ggreif@gmail.com" target="_blank">ggreif@gmail.com</a>> writes:<br>
|<br>
| > Just an idea...<br>
| ><br>
| > could this hint be part of the `configure` error message?<br>
| ><br>
| Indeed. See D4526.<br>
|<br>
| Cheers,<br>
|<br>
| - Ben<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt">_______________________________________________<br>
ghc-devs mailing list<br>
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<a href="http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs" target="_blank">http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs</a><o:p></o:p></p>
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