On Wed, Apr 15, 2020 at 6:53 PM Will Deacon <will@xxxxxxxxxx> wrote: > > It is very rare to see versions of GCC prior to 4.8 being used to build > the mainline kernel. These old compilers are also know to have codegen > issues which can lead to silent miscompilation: > > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145 > > Raise the minimum GCC version for kernel build to 4.8 and remove some > tautological Kconfig dependencies as a consequence. > > Cc: Arnd Bergmann <arnd@xxxxxxxx> > Cc: Masahiro Yamada <masahiroy@xxxxxxxxxx> > Reviewed-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> > Signed-off-by: Will Deacon <will@xxxxxxxxxx> Acked-by: Arnd Bergmann <arnd@xxxxxxxx> On a related note, I've updated the cross-compilers on kernel.org and done some randconfig testing on all major versions from v4.8 to 9.3. There were a couple of minor regressions with 4.8 (mostly harmless warnings), but overall gcc-4.8 is still working well. I did not try older compilers. Arnd
