Re: Fortran flags

[Dmitri A. Sergatskov]

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).

Dmitri
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