[Bug fortran/82143] add a -fdefault-real-16 flag

[janus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82143

--- Comment #12 from janus at gcc dot gnu.org ---
(In reply to Steve Kargl from comment #10)
> Please don't add a new -fdefault-* option.  All of the current
> -fdefault-* options should be deprecated in favor of the -freal-*, 
> -finteger-*, etc options.

I really don't think that is a good idea. There are tons of people who use
those flags.

In fact most real-world Fortran projects that I've worked on use
-fdefault-real-8 as a default flag. Usually they support more than just one
compiler, so they use ifort's -r8 or equivalent flags for other compilers as
well.


> I don't have access to ifort, so I have no idea what "-real-size 128"
> does.  A google search does not find this.

Maybe you should work on your web-search skills. Try this:

https://software.intel.com/en-us/node/691771

I'm not saying that gfortran needs to duplicate Intel's flags or
implementation, but it needs to care about compatibility with other compilers
to a certain extent (ifort being one of the more important ones out there).