You create this file in your custom layer.
You also name it accordingly based on the linux-yocto recipe
you are using.
For example, if you are modifying the
meta/recipes-kernel/linux/linux-yocto_3.4.bb
recipe, the append file will typically be located as follows
within your custom layer:
your-layer
/recipes-kernel/linux/linux-yocto_3.4.bbappend
The append file should initially extend the
FILESPATH
search path by prepending the directory that contains your
files to the
FILESEXTRAPATHS
variable as follows:
FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
The path ${
THISDIR
}/${
PN
}
expands to "linux-yocto" in the current directory for this
example.
If you add any new files that modify the kernel recipe and you
have extended FILESPATH
as
described above, you must place the files in your layer in the
following area:
your-layer
/recipes-kernel/linux/linux-yocto/