Re: MacOS X 10.3.9 build but load-save.m test failure

On 28/04/2005, at 1:34 PM, Dmitri A. Sergatskov wrote:
> For one thing, which optimization flags did you use?

The defaults.  that is -O2 for C and C++ and -O for Fortran.

> I compiled 2.9.2 with
> gcc version 4.0.0 20050406 (Red Hat 4.0.0-0.41.fc3)

Clearly that is not an Apple compiler!
> g++4  with -O2 blows on some files with Internal Compiler Error
> (see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20991)

The bugzilla reference refers to optimisation flags '-O3 -m32'
I was using -O2 and -m32 is an X86 specific flag.  MacOS X runs on 
PowerPC

I could not work out how to reproduce the reported bug.

> so I had to recompile some files manually with -Os.
> The end result looks OK. Passes all tests etc....
>
> I guess my point is that gcc4 pre-release may be finicky with
> optimization.

Possibly, but it seemed quite happy with -O2.  I suspect -fast (Apple 
specific speed freaks flag)may well cause grief.

Also it is worth bearing in mind that gcc-4.00 is Apple's current 
shipping default compiler.  So perhaps it has more bugs knocked out of 
it than the one on RedHat.

Bill Northcott
> > Thanks,
> > jwe
>
> Sincerely,
>
> Dmitri.
> --



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