On Mon, Oct 28, 2019 at 03:41:13PM -0600, Jeff Law wrote: > On 10/28/19 2:27 PM, Segher Boessenkool wrote: > > On Mon, Oct 28, 2019 at 01:40:03PM -0600, Jeff Law wrote: > >> On 10/25/19 6:01 PM, Gabriel Dos Reis wrote: > >>> Jason, Jonathan - is the situation on the terrain really that dire that > >>> C++11 (or C++14) isn't at all available for platforms that GCC is > >>> bootstrapped from? > >> The argument that I'd make is that's relatively uncommon (I know, I know > >> AIX) that bootstrapping in those environments may well require first > >> building something like gcc-9. > >> > >> I'd really like to see us move to C++11 or beyond. Sadly, I don't think > >> we have any good mechanism for making this kind of technical decision > >> when there isn't consensus. > > > > Which GCC version will be required to work as bootstrap compiler? Will > > 4.8.5 be enough? > I'd say gcc-9. What would we gain by making it 4.8 or anything else > that old?
Many systems do not have a system compiler newer than this *four years old* one. GCC 4.8 is the first GCC version that supports all of C++11, which is the only reason it would be even near acceptable to require something this *new*. Segher
