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In case we're using an initrd, we create an empty "root" directory that will contain only the bootloader stuff, not the actual root filesystem, because it is in an initrd (standalone or initramfs). We have to ensure that the directory is empty before assembling the filesystem (to avoid any file lingering from a previous run, like the sequence "make; make"). So we first remove it before we create it, so that on each build (especially not-from-scratch builds) we get the exact expected content without any leftover. However, the macro responsible for that, although defined since7080eef9, was never called. Fix that by registering it as a pre-gen hook. Note: the directory need not be created, as there are quite a few "install -D" commands that ensure it is created. Yet, we prefer to create it explicitly to avoid any confusion. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> (cherry picked from commit8a26adddde) Signed-off-by: Peter Korsgaard <peter@korsgaard.com>