[Bug other/92484] In tree build of ISL 0.22 fails: requires C++11

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92484

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2019-11-13
     Ever confirmed|0                           |1

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Hmm, we might be able to "smuggle" in other -std flags via the ILS host_modules
setting.  Or simply _not_ force any -std=XYZ for compiling in-tree
mpfr/mpc/isl/gmp.

I think we don't use that for stage2+ either, maybe just for stage1 but there
using it in GCC "owned" modules should be enough.

So yes, keep the bug open.