Re: Fortran flags

[Jordi Gutiérrez Hermoso]

On 10 May 2011 15:08, Dmitri A. Sergatskov <address@hidden> wrote:
> 2011/5/10 Thomas Weber <address@hidden>:
>> On Tue, May 10, 2011 at 11:20:45AM -0500, Jordi Gutiérrez Hermoso wrote:
>>> On 10 May 2011 10:12, Daniel Kraft <address@hidden> wrote:
>>>
>>> > Usually, -O2 should be a good thing for gfortran.  And in general, please
>>> > report any "problems" -O2 causes as gfortran bug.
>>>
>>> I was wondering why it's not enabled in the default Fortran flags.
>>> Instead we merely use -O. I thought the option enabled other
>>> optimisation flags that caused problems. Red Hat for example broke ABI
>>> compatibility by compiling with -O2:
>>>
>>>      https://bugzilla.redhat.com/show_bug.cgi?id=478856
>>
>> Maybe I don't get it, but I don't see anything in that bug report that
>> even says someting about optimization flags?
>>
>>        Thomas
>>
>
> I suspect he meant this bug:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=520518#c0
>
> (and few ones related)
> which showed up in all other distributions as well...
> (It was not really RedHat specific).

Yes, thank you, about compilation Fortran flags. I read the first
report too quickly.

Daniel, this was Dmitri's original report on the matter:

    
http://octave.1599824.n4.nabble.com/help-with-compiling-octave-3-3-51-tp2272804p2282648.html

Do you think this is a gcc bug?

- Jordi G. H.