I stumbled upon a compilation breakage in host-uboot-tools when uboot
itself is built from a local directory with the help of
UBOOT_OVERRIDE_SRCDIR. During building, host-uboot-tools fails with:
scripts/kconfig/conf --silentoldconfig Kconfig
*** Configuration file ".config" not found!
*** Please run some configurator (e.g. "make oldconfig" or
*** "make menuconfig" or "make xconfig").
Adding UBOOT_TOOLS_OVERRIDE_SRCDIR to local.mk pointing to the same repo
as UBOOT_OVERRIDE_SRCDIR solves this issue. Maybe uboot-tools should
inherit the override? I can't think of a situation where one would want
to use his own version of uboot but not for the tools.