arch/Config.in.x86: drop knightslanding and knightsmill archs
According to the GCC 14.x release notes at
https://gcc.gnu.org/gcc-14/changes.html:
Xeon Phi CPUs support (a.k.a. Knight Landing and Knight Mill) are
marked as deprecated. GCC will emit a warning when using the
-mavx5124fmaps, -mavx5124vnniw, -mavx512er, -mavx512pf,
-mprefetchwt1, -march=knl, -march=knm, -mtune=knl or -mtune=knm
compiler switches. Support will be removed in GCC 15.
Using those architectures already emits warnings, which when treated
as errors cause build failures, such as:
cc1: error: '-march=knm' support will be removed in GCC 15 [-Werror=deprecated]
cc1: all warnings being treated as errors
Therefore, let's drop support for those two architectures, which are
anyway not common at all, especially in the embedded space.
Fixes:
http://autobuild.buildroot.net/results/ce98c41b22212f52bf7b53d84871b8e03409dbca/
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2 files changed
