Windows breakage -- again

[Niklas Larsson]

I just found exactly the same thing! Well, I used i686 instead.

Sounds like it's worthwhile to see if this is limited to ghc-prim or if
there's more stuff that's built with i386.


2014-07-17 8:21 GMT+02:00 Páli Gábor János <pali.gabor at gmail.com>:

> 2014-07-17 0:51 GMT+02:00 Páli Gábor János <pali.gabor at gmail.com>:
> > 2014-07-17 0:47 GMT+02:00 Niklas Larsson <metaniklas at gmail.com>:
> >> I hope they can just be done away with at the source, that is to make
> gcc
> >> generate the assembly primitives. GHC should already be built with
> i686, but
> >> does that reach ghc-prim?
> >
> > This depends on GCC -- if no -march=XXX is explicitly set, I guess it
> > will take its default, which may vary platform by platform.
>
> All right, I have finally got a Windows (x64) machine and installed
> the msys2 environment by the GHC wiki [1].  This has GCC 4.5.2 (as
> Niklas wrote earlier), where the default -march is i386.  You should
> see this line when trying to compile Johan's test program with the -v
> flag set:
>
> COLLECT_GCC_OPTIONS= ... '-v' '-mtune=i386' '-march=i386'
>
> With the -march=i586 flag explicitly set in the command line, no
> __sync_fetch_and_add_n() calls are generated.
>
> [1]
> https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Windows/MSYS2
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.haskell.org/pipermail/ghc-devs/attachments/20140717/95b30ce8/attachment.html>