I am having a heck of a hard time getting a minor kernel config fragment
applied.
In order to minimize all variables, I am simply trying to build linux-yocto for
a qemux86 MACHINE target.
There had been some discussion on the mailing list previously that suggested
making sure linux-yocto.inc was included within the recipes. The ones being
used are standard poky recipes and they do include the linux-yocto.inc file.
My configuration is very simple. I have my own layer and linux-yocto bbappend:
meta-mylayer/recipes-kernel/linux/linux-yocto_4.4.bbappend
Whose contents are:
FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
SRC_URI += " \
file://overlayfs.cfg \
"
With the config fragment in:
meta-mylayer/recipes-kernel/linux/linux-yocto/overlayfs.cfg
whose contents is:
CONFIG_OVERLAY_FS=y
If I do a "bitbake linux-yocto" I would expect it to generate a config file
that includes CONFIG_OVERLAY_FS=y and a kernel that includes this filesystem.
I don't.
My layer is parsed correctly and the bbappend is found and parsed. I know this
because in the tmp directory:
tmp/work/qemux86-poky-linux/linux-yocto/4.4.26+gitAUTOINC+3030330b06_ca6a08bd7f-r0/
the file overlayfs.cfg exists.
Searching the log files, the only one that references this file though is
log.do_unpack. I do not see any reference to it in log.do_kernel_configme or
log.do_configure. I'm not sure how kernel fragments are applied, but looking
through the classes and recipes for linux-yocto in poky/meta, I do not see any
code that would apply kernel fragments. So I'm not sure if I'm missing some
piece.
Searching through the files in poky/meta, I find meta-config.sh only in
recipes-core/uclibc and recipes-core/busybox. That's why I think I'm missing
something.
I'm using the krogoth branch of poky.
What am I missing?
Thanks,
Rich
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