I was using integer-gmp. And sadly make -j2 locks up way before getting to integer-gmp. Simon From: Niklas Larsson [mailto:metaniklas@gmail.com] Sent: 28 August 2013 18:08 To: Simon Peyton-Jones Cc: Kyle Van Berendonck; ghc-devs@haskell.org Subject: Re: make -jN loops on Windows Hi! I have a hint of what could be wrong. 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't hang though, it errored out in the linking phase). The build went fine after I reran without -j. Niklas 2013/8/28 Simon Peyton-Jones <simonpj@microsoft.com<mailto:simonpj@microsoft.com>> I tried make -j2, which locked up. "sh validate" used -j but I'm not sure with what N. It's 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 http://www.mingw.org/, using the download installer "Mingw-get-setup.exe". I have also just unravelled another bizarre failure, which I'll describe in a separate email. Sadly resolving the latter does not fix the make -j2 problem. Simon From: ghc-devs [mailto:ghc-devs-bounces@haskell.org<mailto:ghc-devs-bounces@haskell.org>] On Behalf Of Niklas Larsson Sent: 27 August 2013 23:56 To: Kyle Van Berendonck Cc: ghc-devs@haskell.org<mailto:ghc-devs@haskell.org> Subject: Re: make -jN loops on Windows Hi! 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. Niklas 2013/8/27 Kyle Van Berendonck <kvanberendonck@gmail.com<mailto:kvanberendonck@gmail.com>> Hi Simon, I think this is a MinGW bug. If we're talking about the same bug (lockup, no console output, task manager shows cpu but it doesn't produce files, etc) I get it when building other projects with -j too and I don't think its GHC's fault. Regards, Kyle Van Berendonck _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org<mailto:ghc-devs@haskell.org> http://www.haskell.org/mailman/listinfo/ghc-devs