On Tue, Sep 7, 2021 at 1:02 AM Alexey Dobriyan <adobriyan@xxxxxxxxx> wrote: > > On Mon, Sep 06, 2021 at 08:54:13AM +0200, Florian Weimer wrote: > > * Linus Torvalds: > > > > > On Sat, Sep 4, 2021 at 8:19 AM Florian Weimer <fweimer@xxxxxxxxxx> wrote: > > >> > > >> In any case, it would be nice to know what the real motivation is. > > > > > > I don't know about the original motivation, but the reason I like that > > > patch after-the-fact is that I've actually been in situations where I > > > test out self-built compilers without installing them. > > > > Does this really simplify matters? Why wouldn't the gcc compiler driver > > find cc1, but not be able to pass the right path options, so that the > > include/ subdirectory can be located as well? > > > > > Then it's convenient to have a completely standalone kernel tree. > > > > The final patch in the series is here: > > > > isystem: delete global -isystem compile option > > <https://lore.kernel.org/linux-kernel/YQhY40teUJcTc5H4@localhost.localdomain/> > > > > It's still not self-contained. > > What do you mean? > > Mainline has 1/3 and 2/3 now: > > c0891ac15f0428ffa81b2e818d416bdf3cb74ab6 isystem: ship and use stdarg.h > 39f75da7bcc829ddc4d40bb60d0e95520de7898b isystem: trim/fixup stdarg.h and other headers > > 3/3 is stuck in -next: > > https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git/log/?h=for-next > > I'm not sure why. If the patch is bad it should be dropped from -next > as well. If it is good, it should be in mainline, otherwise more > compile time failures will happen. See https://lore.kernel.org/all/20210906084947.4f65761d@xxxxxxxxxxxxxxxx/ Your 3/3 correctly detected a new use of <stddef.h> in the drm tree. Stephen Rothwell pointed it out a long time ago, and fixed it in linux-next. But, the drm maintainers did not fix it in time. I could not fix it either since the bad commit, b97060a99b01b4, was not in my tree. Now it is mainlined, so my plan is to do s/<stddef.h>/<linux/stddef.h>/ in my tree, then include your 3/3 in my second pull request in this MW. -- Best Regards Masahiro Yamada
