[Bf-committers] MinGW support

[Antony Riakiotakis]

Hi,

Status with openmp as far as I know is fine. The problem with MinGW is that
supporting a proper development environment requires installing visual
studio/Windows SDK anyway, so it sort of defeats the purpose of having an
"independent" compiler.

* MSVC is needed to compile CUDA binaries
* MSVC is needed to run a debug build, since python is lined against the
debug libraries of microsoft, not MinGW.
* Debugging threads is not so well/natively supported (since pthread
library of MinGW is built on top of win32 library)

Only positive thing from MinGW side as far as I know is faster cycles, but
it's been a while since I tested this. It may be better now with 2013
compiler?
I wouldn't want to spend any more time maintaining this, so if anyone wants
to take over (supposing we decide it is even worth it) be my guest.

On 26 December 2015 at 19:47, Sergey Sharybin <sergey.vfx at gmail.com> wrote:

> We can not advertise some sort of franken-compiler as an officially
> supported. Either the issues are solved in upstream or we don't consider
> compiler officially supported.
>
> On Sat, Dec 26, 2015 at 11:44 PM, Yousef Harfoush <bat3a at msn.com> wrote:
>
> > > Date: Sat, 26 Dec 2015 23:08:42 +0500
> > > From: sergey.vfx at gmail.com
> > > To: bf-committers at blender.org
> > > Subject: Re: [Bf-committers] MinGW support
> > >
> > > If we're going to keep supporting MinGW it should be latest official
> > > version. I remember we were having major issues with some system
> > libraries
> > > (mainly threading and OpenMP), so it makes sense to re-evaluate if
> those
> > > issues are solved form MinGW side before trying to support all the
> > > libraries we need.
> >
> > i use mingw 4.72 with added openmp libs from here:
> > http://tdm-gcc.tdragon.net/download
> > and threading works properly no crashes, at least in my workflow.
> >
> >
> > Regards
> > Yousef Harfoush
> > bat3a at msn.com
> >
> >
> >
> >
> > >
> > > On Sat, Dec 26, 2015 at 10:38 PM, alekulyn <alekulyn at gmail.com> wrote:
> > >
> > > > I talked to psyfi over IRC around half a year ago and told him I'd
> like
> > > > to help with this.  There have been several complications along the
> > way,
> > > > such as which MinGW version we should use, rumors that clang was
> coming
> > > > into the picture, and general inactivity regarding anything MinGW.
> > > >
> > > > As for which MinGW version to use, my conversation with psyfi was
> > mainly
> > > > about adding libraries to the mingw64_gcc49 branch he started.  To
> that
> > > > end, I did compile some libraries with MinGW-W64 GCC 4.9, but I must
> > > > have deleted them some time ago.
> > > >
> > > > Anyway, like I told psyfi, I'm willing to help with this.  Just need
> to
> > > > know which MinGW version to use.
> > > >
> > > > On 12/26/2015 5:12 PM, Sergey Sharybin wrote:
> > > > > Hey everyone,
> > > > >
> > > > > There are some missing precompiled libraries (sndfile, opensubdiv,
> > OSL)
> > > > and
> > > > > some misng libraries update (python, SDL, OpenAL)  for MinGW.
> > > > >
> > > > > This makes MinGW builds quite diverged from the official builds
> > > > feature-set
> > > > > and lib-version wise, moving MinGW builds to the boundary where we
> > can't
> > > > > call it officially supported anymore.
> > > > >
> > > > > Additioanlly, svn:externals for mingw folders seems to be
> > misconfigured
> > > > now
> > > > > and needs clean up.
> > > > >
> > > > > Anyone to have a look and fix all those issues?
> > > > >
> > > >
> > > > _______________________________________________
> > > > Bf-committers mailing list
> > > > Bf-committers at blender.org
> > > > http://lists.blender.org/mailman/listinfo/bf-committers
> > > >
> > >
> > >
> > >
> > > --
> > > With best regards, Sergey Sharybin
> > > _______________________________________________
> > > Bf-committers mailing list
> > > Bf-committers at blender.org
> > > http://lists.blender.org/mailman/listinfo/bf-committers
> >
> > _______________________________________________
> > Bf-committers mailing list
> > Bf-committers at blender.org
> > http://lists.blender.org/mailman/listinfo/bf-committers
> >
>
>
>
> --
> With best regards, Sergey Sharybin
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