Fortran flags

[Jordi Gutiérrez Hermoso]

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

I seem to recall there was another packaging problem by compiling with
-O2, but I can't find it now.

- Jordi G. H.