<"acasta" <acastagnini AT yahoo DOT com>> wrote:

> Official povWin binary: about 30''
> MinGW binary (GUI): 90''
> MinGW binary (console, tried different optimisation options): 80''
> Cygwin binary: 47''

Thats strange. I thought Cygwin is basically the same as MingW,
just with additional utilities (like bash for win32 etc) and 
libraries for emuluting a unix environment.

Lutz-Peter

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ABX <abx### [at] abxartpl> wrote:
> Have you tried to apply the same compiler options from Cygwin build into flags
> in makefile dedicated to MinGW build ? That would be worth to compare.
>
> ABX

Yes: unfortunately there was no appreciable change in rendering time: I
obtained the usual 80'' for my sample scene I also had with the other MinGW
builds.

The full list of options used in the Cygwin build were:

-O3 -msse -mfpmath=sse -march=pentium3 -mcpu=pentium3
-malign-double -minline-all-stringops

acasta

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> I've compiled the unix/linux source distribution with the Cygwin environment
> and results have been quite different.

	You may also give a try to:  configure --without-cygwin-dll  to compile
the unix sources on cygwin but using the mingw32 library instead of the cygwin
DLL.

> By the way, what compiler is used for the official linux binary?

	gcc-3.4.0

	- NC

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