<div dir="ltr"><div>Hi!</div><div><br></div><div>I have a hint of what could be wrong.</div><div><br></div>I looked through my configuration and saw that I used integer-simple. When I changed it to integer-gmp it blew up with -j4 (it didn&#39;t hang though, it errored out in the linking phase). The build went fine after I reran without -j.<div>
<br></div><div>Niklas</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">2013/8/28 Simon Peyton-Jones <span dir="ltr">&lt;<a href="mailto:simonpj@microsoft.com" target="_blank">simonpj@microsoft.com</a>&gt;</span><br>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">I tried make j2, which locked up. sh validate used j but Im not sure with what N.<u></u><u></u></span></p>

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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">Its tantalising if it worked for you! And it worked fine on my old Win7 laptop. Where did you get your mingw/msys installation
 from? I got mine from <a href="http://www.mingw.org/" target="_blank">http://www.mingw.org/</a>, using the download installer Mingw-get-setup.exe.<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">I have also just unravelled another bizarre failure, which Ill describe in a separate email. Sadly resolving the latter does not
 fix the make j2 problem.<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">Simon<u></u><u></u></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"> ghc-devs [mailto:<a href="mailto:ghc-devs-bounces@haskell.org" target="_blank">ghc-devs-bounces@haskell.org</a>]
<b>On Behalf Of </b>Niklas Larsson<br>
<b>Sent:</b> 27 August 2013 23:56<br>
<b>To:</b> Kyle Van Berendonck<br>
<b>Cc:</b> <a href="mailto:ghc-devs@haskell.org" target="_blank">ghc-devs@haskell.org</a><br>
<b>Subject:</b> Re: make -jN loops on Windows<u></u><u></u></span></p>
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Hi!<u></u><u></u></p>
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Are you using make -j with or without number of jobs? I tried with make -j4 on my Windows 8 machine and it worked well.<u></u><u></u></p>
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Niklas<u></u><u></u></p>
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2013/8/27 Kyle Van Berendonck &lt;<a href="mailto:kvanberendonck@gmail.com" target="_blank">kvanberendonck@gmail.com</a>&gt;<u></u><u></u></p>
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Hi Simon,<u></u><u></u></p>
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I think this is a MinGW bug. If we&#39;re talking about the same bug (lockup, no console output, task manager shows cpu but it doesn&#39;t produce files, etc) I get it when building other projects with -j too and I don&#39;t think its GHC&#39;s fault.<u></u><u></u></p>

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Regards,<u></u><u></u></p>
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Kyle Van Berendonck<u></u><u></u></p>
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<br>
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