• Sam Ravnborg's avatar
    kbuild: fix infinite make recursion · 4f1127e2
    Sam Ravnborg authored
    Jan Engelhardt <jengelh@computergmbh.de> reported:
    You can cause a recursion in kbuild/make with the following:
    make O=$PWD kernel/time.o
    make mrproper
    Of course no one would use O=$PWD (that's just the testcase),
    but this happened too often:
    /ws/linux/linux-2.6.23$ make O=/ws/linux/linux-2.6.23 kernel/time.o
    (Oops - should have been O=/ws/linux/obj-2.6.23!)
    Fixed by an explicit test for this case - we error
    out if output directory and source directory are the same.
    Tested-by: default avatarJan Engelhardt <jengelh@computergmbh.de>
    Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
Makefile 50.6 KB