• Cheng Renquan's avatar
    kbuild: remove extra ifdef/endif of top Makefile · b8b0618c
    Cheng Renquan authored
    The GNU make's origin function know undefined variable well,
    so the outer ifdef/endif conditional checking is unneeded.
    From `info make` documentation, origin will return
         if VARIABLE was never defined.
      `command line'
         if VARIABLE was defined on the command line.
    Therefore, $(origin V) will get a value anyway, killing ifdef/endif is
    viable and safe.
    Furthermore, I've checked the minimal requirements from
    Documentation/Changes is GNU make 3.79.1, and that version of GNU make
    has support of origin function well already, so now it's safe to kill
    the outer conditional checking, without upgrading the minimal
    Signed-off-by: default avatarCheng Renquan <crq@kernel.org>
    Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
Makefile 53.8 KB