Re: Compiling OpenShadingLanguage under Windows


Wormszer <worm...@...>
 

I agree, it was something I was going to suggest too after getting a windows version built and all the details worked out.
Its seems overkill having to install cygwin to just be able to parse a couple of files when doing a checkout and straight build.

Is anyone else trying to build OSL on windows besides Oleg and me?
I have a feeling its not a very common target in the movie business or for the current set of users.


Jeremy


On Wed, Jan 20, 2010 at 4:10 AM, Pierre Saunier <pierre...@...> wrote:
Dear all,

Isn't it possible to distribute the files produced by Flex and bison?
Normally, they should be independant from the system (they are produced on and they are
used on), and it will avoid a lot of trouble to build osl...
And if someone wants to recreate them, it is always possible!

When the doc about integrating OSL in an actual renderer will be available? At least some
sample code?

Regards,

Pierre

> Great,
>
> Did you encounter the same linking issues i mentioned?
>
> Let me know how it works out for you.
>
> I had tried compiling the shaders after making some changes to the project
> file for a path issues, but I didnt get any warnings or outputs from inside
> vs.
> If I tried to run it from the command line, after finding all the
> dependencies, it gave me a could not find file error. It didn't seem to be a
> dll error but something else.
>
> I plan to look into it more now.
>
> Jeremy
>
>
> On Tue, Jan 19, 2010 at 8:14 PM, Oleg <ode...@...> wrote:
>
> > Hi Jeremy,
> >
> > Using boost math functions, some definitions in fmath.h and the
> > following two implementations of my own
> >
> > inline float
> > logbf(float val) {
> >    // please see
> > http://www.kernel.org/doc/man-pages/online/pages/man3/logb.3.html
> >    return logf(val)/logf(FLT_RADIX);
> > }
> >
> > inline float
> > exp2f(float val) {
> >    // 2^val = e^(val*ln(2))
> >    return exp( val*log(2.0f) );
> > }
> >
> > I was able to compile it under Windows. It's not the best solution,
> > but probably better as nothing...
> >
> > It's time to test it :-)
> >
> > Regards,
> > Oleg
> >
> > On 19 Jan., 19:08, Wormszer <wo...@...> wrote:
> > > Thanks Larry,
> > >
> > > I was wondering where the best place would be to add the missing
> > > functionality.
> > > Currently I have used the boost C99 math libraries and the missing two
> > > functions logbf and exp2f i defined to 0.0f temporarily so I could see
> > what
> > > other issues I would run into when building.
> > > I will come back and try and work the missing math functions into
> > fmath.h.
> > >
> > > But I have run into a couple of other issues with the oslexec project and
> > > the TypeSpec class.
> > >
> > > It seems that some of its functions are implemented in Symtab.cpp instead
> > of
> > > TypeSpec.cpp specifically, c_str() and string(). I am not sure if this
> > was
> > > on purpose or not.
> > > On the oslexec project on windows this was causing linking issues. This
> > > project doesn't include symtab.cpp and they were not being exported from
> > the
> > > oslcomp library. Including Symtab.cpp raises other errors.
> > > So I moved these declarations into the TypeSpec.cpp file fixing the
> > linking
> > > errors.
> > >
> > > There is a similiar issue with Symbol::mangled () it was implemented in
> > > Symtab.cpp as well. I also moved this to TypeSpec.cpp to fix the errors
> > But
> > > I am not sure if that is best place since its not as obvious as the
> > TypeSpec
> > > functions.
> > >
> > > I can now build oslexec and it did not seem to effect oslcomp.
> > >
> > > Jeremy
> > >
> >
> > --
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> >
> >
> >
>

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