On Fri, Nov 03, 2023 at 01:59:28PM +0100, David Hildenbrand wrote: > Okay. the question is if your workflow can be easily adjusted, or if we can > improve that header handling as a whole. So on IRC the following was suggested: make O=defconfig-build headers ; make O=defconfig-build -C tools/testing/selftests/x86 But that makes absolutely no sense to me; because the headers and selftests are not .config dependent. Furthermore I don't want them in a kernel build dir. > The problem I had with this recently: just because we did a "make headers" > once in a git tree doesn't mean that it is still up-to-date. > > So once some selftest changes showed up that require newer headers, building > the selftests again fails without a hint that another round of "make > headers" would be required. Yeah, so I've been adding #ifndef guards all over the place for decades and that just works. You need it in normal userspace too. This super reliance on the very latestesetst headers is just a total pain.
