Hi,
I am in need of assistance. I have a package that install headers required
for a kernel modules build out-of-tree. To enable the kernel module to build,
I install the required header files under STAGING_KERNEL_DIR, and it works for
the first build, subsequent builds failed due to the shared state cache
artefact missing the files installed in the STAGING_KERNEL_DIR folder as this
is not part of the output content looked at to build the .ipk files (I assume).
As such, I would like to understand what would be the correct approach for me
to have headers shared across multiple package at the kernel level. I
understand that for user space, we install to /usr/include and that then gets
packaged and re-install to the sysroot using STAGING_INCDIR. Is there a
similar system for kernel level sharing of header files?
I am thinking of 2 approach to solve my solution, one would be to install the
header under STAGING_INCDIR and then add a CFLAGS to my kernel module to
include the STAGING_INCDIR during compilation. This looks like a hack to me
since this folder was not intended to be used for kernel space building.
Second solution I can think of, is to instruct the Shared State Cache system
to look for output change in STAGING_KERNEL_DIR and record those, so that they
get somehow restored. I have attempted to do so by adding
do_install[sstate-outputdirs] += "${STAGING_KERNEL_DIR}"
statement, but it didn't appear to have worked successfully.
Any help would be appreciated.
--
Yannick Koehler
--
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