Michael Andrews wrote:
> 
> Jordan Ellis wrote:
> ...
> > If the PovRay source (generic Unix version) is not *nix/posix-dependant,
> > you should be able to compile it with the -mno-cygwin flag (or something to
> > that effect...) to remove any Cygwin dll dependancies.
> ...
> > Jordan
> 
> This was what I meant.
> 
> I think you have to install an extra zip file from the web site to be
> able to use this compiler flag (unless thye have integrated it further
> for the latest versions), but it effectively performs a MinGW32 compile
> rather than a Cygwin compile.
> It may make no difference to the performance of the compiled code, but
> users wouldn't have to worry about having the correct Cygwin DLL on
> their system ...
> 

Thanks for that hint,

I finally managed to get it work without the DLL using -mno-cygwin, found
a nice text explaining this in detail BTW:

http://www.xraylith.wisc.edu/~khan/software/gnu-win32/mno-cygwin-howto.txt

Most things needed for it are already included in the current cygwin
package, but i had to compile zlib/libpng with -mno-cygwin, because the
libraries are not included.  Furthermore i needed the MinGW package
available for example at:

ftp://ftp.xraylith.wisc.edu/pub/khan/gnu-win32/mingw32/gcc-2.95.2/

The only thing that had to be changed in the source was:

#define PRECISION_TIMER_AVAILABLE 0

in unixconf.h

The updated files are available on: 
http://www.schunter.etc.tu-bs.de/~chris/povcyg.html

I did not yet have time to check if it's faster than before, any feedback
if it works right would be appreciated.  

Christoph


-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

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