(In reply to Jiri Slaby from comment #3) > Building: > lto is supported for a long time in gcc, so gcc-7 (and the rest of the > 15sp4's toolchain) should be fine. But noone tried, so I would expect > glitches. Amending to this: I am building the LTO kernels on kunlun (15sp3) just fine. Only that I have gcc-12 from devel:gcc/SLE15.