[yocto] Strange configure error (???)

[Neuer User]

Hi

I'm currently moving from Dora to Fido. I moved all my recipes to a new
yocto installation and are modifying the recipes where necessary.

I have a very strange error when configuring a kernel recipe
(linux-cubox-i). Actually, there is no error when using the defaut
recipe included in fido. Only if I add the following bbappend file in
order to change the kernel configuration, I get the error:

FILESEXTRAPATHS_prepend := "${THISDIR}/linux-cubox-i:"

SRC_URI = "file://defconfig \
           file://videoin.cfg \
           file://networking.cfg \
           file://wlan.cfg \
           file://dm-crypt.cfg \
           file://no-caam.cfg \
           file://leds.cfg \
           file://mod-to-builtin.cfg \
           file://watchdog-nowayout.cfg \
"

KERNEL_IMAGETYPE_cubox-i = "zImage"


Error:

| DEBUG: Executing python function sysroot_cleansstate
| DEBUG: Python function sysroot_cleansstate finished
| DEBUG: Executing shell function do_configure
| WARNING: exit code 128 from a shell command.
| ERROR: Function failed: do_configure (log file is located at
/home/ubuntu/yocto1.8/build/tmp/work/cubox_i-poky-linux-gnueabi/linux-cubox-i/3.14.14-r0/temp/log.do_configure.29043)


Nothing more in the configure log. :(

Any idea, what is wrong? In general I just want to use a diffent kernel
config. Actually a kernel config that worked before without problems on
dora. I really have no idea, why this isn't working or even what the
error means.

Thanks for any help

Michael