On Mon, May 3, 2021 at 9:17 AM Christophe Leroy <christophe.le...@csgroup.eu> wrote: > Le 01/05/2021 à 17:15, Masahiro Yamada a écrit : > > The current minimum GCC version is 4.9 except ARCH=arm64 requiring > > GCC 5.1. > > > > When we discussed last time, we agreed to raise the minimum GCC version > > to 5.1 globally. [1] > > > > I'd like to propose GCC 5.2 to clean up arch/powerpc/Kconfig as well. > > One point I missed when I saw your patch first time, but I realised during > the discussion: > > Up to 4.9, GCC was numbered with 3 digits, we had 4.8.0, 4.8.1, ... 4.8.5, > 4.9.0, 4.9.1, .... 4.9.4 > > Then starting at 5, GCC switched to a 2 digits scheme, with 5.0, 5.1, 5.2, > ... 5.5 > > So, that is not GCC 5.1 or 5.2 that you should target, but only GCC 5. > Then it is up to the user to use the latest available version of GCC 5, which > is 5.5 at the time > begin, just like the user would have selected 4.9.4 when 4.9 was the minimum > GCC version.
And we may end up in the case when gcc 5.x will be more buggy than v4.9.y (as once proved by nice detective story where compiler bug produces a file system corruption). -- With Best Regards, Andy Shevchenko
