Re: Packaging Octave for Windows and OS X (was: writing integer with fwrite)

[Paul Thomas]

Dear All,

> My understanding is that this is due to the way exception handling is
> implemented in GCC 3.3 for Cygwin.  Does anyone know whether this is
> likely to improve any time soon?  Long term, we need to support
> improving the compiler.
I am still in sporadic communication with the gcc developers about this.

I had an attempt at building octave with gcc-4.0.0 somewhile back.  It 
bombed out because of clashes between the new fortran library and libm, 
amongst others.  I left it at that point, thinking that this is something 
that will get straightened out in time.  I therefore did not push on to test 
build the c++ libraries.  It was something of a surprise, therefore, when I 
repeated some of the new/delete tests with g++-4.0.0 and found that the 
slowness has gone away.  Nobody has explained it yet but I suspect that I am 
getting dwarf2 as a default, rather than -sjlj.  It might, therefore be 
worth either fixing the libgfortran/libm clashes or using g77-3.4.x, instead 
of gfortran.

Paul T 




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