On Mon, Sep 14, 2020 at 06:29:01PM -0700, John Hubbard wrote: > Avoid accidental wrong builds, due to built-in rules working just a > little bit too well--but not quite as well as required for our situation > here. > > In other words, "make userfaultfd" (for example) is supposed to fail to > build at all, because this Makefile only supports either "make" (all), > or "make /full/path". However, the built-in rules, if not suppressed, > will pick up CFLAGS and the initial LDLIBS (but not the target-specific > LDLIBS, because those are only set for the full path target!). This > causes it to get pretty far into building things despite using incorrect > values such as an *occasionally* incomplete LDLIBS value. > > Signed-off-by: John Hubbard <jhubbard@xxxxxxxxxx> > --- > tools/testing/selftests/vm/Makefile | 12 ++++++++++++ > 1 file changed, 12 insertions(+) I hit this too when fiddling with the hmm tests! Would be happy to see better errors Jason
