Building on windows

[Niklas Larsson]

Hi!

The check for Windows in sync-all is failing (line 790). On a mingw/msys
system $OSNAME contains 'msys' and not MSWin32 or Cygwin that it is
checking for.

Niklas


2013/8/23 Simon Peyton-Jones <simonpj at microsoft.com>

>  I’ve got a new Windows laptop, and have being having a torrid time
> getting GHC to build on it.****
>
> ** **
>
> **1.      **Build falls over with ****
>
> checking for gcc... c:/code/HEAD/inplace/mingw/bin/gcc.exe****
>
> checking whether the C compiler works... no****
>
> configure: error: in `/c/code/HEAD':****
>
> configure: error: C compiler cannot create executables****
>
> Turns out that an earlier error was****
>
> configure: Making in-tree mingw tree****
>
> tar (child): ../../ghc-tarballs/mingw/binutils*.tar.lzma: Cannot open: No
> such file or directory****
>
> tar (child): Error is not recoverable: exiting now****
>
> tar: Child returned status 2****
>
> tar: Error is not recoverable: exiting now****
>
> ./configure: line 4050: inplace/mingw/bin/realgcc.exe: No such file or
> directory****
>
> configure: In-tree mingw tree created****
>
> configure: Making in-tree perl tree****
>
> BUT this error was not fatal, so the build went on (notwithstanding the
> red message above), leading to a MUCH more obscure error later.****
>
> ** **
>
> **2.      **Why wasn’t ghc-tarballs there?  Oh, apparently you have to
> say ****
>
> sync-all –windows get****
>
> That’s really hard for a naïve user to work out.  Can’t we either always
> get it, or work out that we are on windows?****
>
> ** **
>
> **3.      **I carefully installed mingw/msys as described on
> http://www.mingw.org/wiki/Getting_Started
> I used mingw-set-inst, which launches a GUI for a package installer.  All
> seems well.  I update my path.  But then****
>
> Can't locate Autom4te/ChannelDefs.pm in @INC (@INC contains:
> /mingw/share/autoco****
>
> nf /usr/lib/perl5/5.8/msys /usr/lib/perl5/5.8
> /usr/lib/perl5/site_perl/5.8/msys****
>
> /usr/lib/perl5/site_perl/5.8 /usr/lib/perl5/site_perl/5.8
> /usr/lib/perl5/vendor_****
>
> perl/5.8/msys /usr/lib/perl5/vendor_perl/5.8
> /usr/lib/perl5/vendor_perl/5.8 .) a****
>
> t /c/Programme/MinGW/bin/autoreconf-2.68 line 40.****
>
> BEGIN failed--compilation aborted at
> /c/Programme/MinGW/bin/autoreconf-2.68 line****
>
>   40.****
>
> After a long struggle I found that I had missed a crucial thing.  With the
> new autoconf tools, *it’s essential that c:/mingw be mounted as /mingw*,
> because /mingw is hard-coded into autoconf perl scripts.
> http://www.mingw.org/wiki/Getting_Started does say (deep in the middle)
> to edit c:/mingw/msys/1.0/etc/fstab with a text editor, but that appeared
> to have no effect for me.  Saying “mount c:/mingw /mingw” did work.  I
> have no idea why. ****
>
> ** **
>
> What is horrible is how uninformative the error message is.****
>
> ** **
>
> I guess we should update the Windows build instructions.****
>
> ** **
>
> I still don’t know if I’ve bottomed out here because I can’t find
> Happy/Alex in the Haskell platform. Sigh.****
>
> Simon****
>
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>
>
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