Re: Problems with building GHC 7.8.3 on Windows

Yup. This is the MSYSTEM env. variable which determines 'uname' output for client, see: http://www.haskell.org/pipermail/ghc-devs/2013-October/002920.html. Cheers, Kyra On 8/29/2014 20:22, Páli Gábor János wrote:

2014-08-29 17:59 GMT+02:00 kyra :

...

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. For what it is worth -- to my experience --, one could build GHC successfully on Windows without using mingwXX_shell.bat. Only the MSYSTEM environment variable has to be set properly (to either MINGW32 or MINGW64). That is what mingwXX_shell.bat also does.

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