On Thu, Jun 21, 2018 at 12:09:12PM -0500, Segher Boessenkool wrote:
> On Thu, Jun 21, 2018 at 12:58:06PM -0400, Michael Meissner wrote:
> > On Wed, Jun 20, 2018 at 07:31:31PM -0500, Segher Boessenkool wrote:
> > > On Wed, Jun 20, 2018 at 10:25:36AM -0400, Michael Meissner wrote:
> > > > This code disables the automatic multilib creation unless you use the
> > > > --with-advance-toolchain=<xxx> option and the Advance Toolchain
> > > > directoy has
> > > > been modified to have the lib64/ieee128 and/or lib64/ibm128 directories
> > > > for
> > > > multilib support. This allows the multilib to still be created, but it
> > > > is not
> > > > enabled by default.
> > > >
> > > > Alternatively, I have a patch that disables the IEEE/IBM long double
> > > > multilib
> > > > support completely.
> > >
> > > So what are the advantages and the disadvantages of both approaches?
> > > And, why do you think this one is preferable?
> >
> > The main advantge is that it makes it a little easier for me to test things,
> > since I only have to build one compiler instead of two. But that is fairly
> > minor.
> >
> > Here is the alternate patch to eliminate the multilib support for IEEE/IBM
> > long
> > double.
> >
> > [gcc]
> > 2018-06-21 Michael Meissner <meiss...@linux.ibm.com>
> >
> > * config.gcc (powerpc64le*): Remove multilib support for IEEE and
> > IBM long double.
> > * config/rs6000/rs6000.c (rs6000_option_override_internal):
> > Likewise.
> > * config/rs6000/rs6000.h (TARGET_IEEEQUAD_MULTILIB): Likewise.
> > * config/rs6000/t-ldouble-linux64le-ibm: Delete, IEEE/IBM long
> > double multilib no longer supported.
> > * config/rs6000/t-ldouble-linux64le-ieee: Likewise.
> > * doc/install.texi (PowerPC options): Delete information about
> > IEEE/IBM long double multilibs.
>
> This reverts r256775 (the commit message should say), except the linux64.h
> parts, and it seems you just missed those?
No it only reverts part of r256775. The main part of the r256775 change is to
add support for --with-long-double-format={ieee,ibm} which we need to keep.
Yeah, I probably missed them.
--
Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA
email: meiss...@linux.ibm.com, phone: +1 (978) 899-4797
