On Tue, Jun 06, 2023 at 12:16:37AM -0700, John Hubbard wrote: > As per a discussion with Muhammad Usama Anjum [1], the following is how > one is supposed to build selftests: > > make headers && make -C tools/testing/selftests/mm > > Change the selftest build system's lib.mk to fail out with a helpful > message if that prerequisite "make headers" has not been done yet. > NAK NAK NAK This now means I can no longer run selftests, I thank you very much! :-/ root@spr:/usr/src/linux-2.6# make O=defconfig-build/ -j64 make[1]: Entering directory '/usr/src/linux-2.6/defconfig-build' *** *** The source tree is not clean, please run 'make mrproper' *** in /usr/src/linux-2.6 I've always done: cd tools/testing/selftests/x86; make and that has always worked Now I can't bloody well build *any* selftest or risk not being able to do builds.