I am currently working on an bbappend for linux-omapl138-psp_2.6.37.bb for the
am180x-evm machine and I am having a problem with my custom defconfig not being
used. When bitbaking the recipe my defconfig is copied to the ${WORKDIR} like
it is supposed to but after the kernel is built I noticed the .config within
${S} was significantly different than ${WORKDIR}/defconfig. This problem was
detected when the uImage I ran did not have support for oprofile even though my
defconfig does include the support. I did some searching I found the
${S}/.config is the same as
meta-ti/recipes-kernel/linux/linux-omap138-psp-2.6.37/am180x-evm/configs/static.
After some debugging I found the problems lies within compileconfigs task which
is defined in multi-kernel.inc.
Compileconfigs renames ${WORKDIR}/defconfig to ${WORKDIR}/defconfig.save. Then
it loops through all the defconfigs in the ${WORKDIR}/configs directory and
configures, compiles, install and deploys the kernel for each of the
defconfigs. The final step is to restore the original defconfig file by
renaming ${WORKDIR}/defconfig.save to ${WORKDIR}/defconfig. After
compileconfigs is done do_configure is ran using ${WORKDIR}/defconfig and the
usual build steps are completed.
However, the problem is the patch "Multi-kernel: fix get_kernelversion returns
None for do_compileconfigs" causes compileconfigs to run after do_configure
instead of before it. Therefore, ${WORKDIR}/defconfig is never copied to
${S}/.config and the kernel is never configured to use this .config. The last
.config used by do_compileconfigs to compile the kernel is used instead.
I thought a simple solution would be to call do_configure at the end of
compileconfigs but then I get a series of
"basename: missing operand"
and
make: *** No rule to make target `oldconfig`. Stop"
Any suggestions on how to fix this problem? This should issue be affecting
anyone who is using a kernel that includes multi-kernel.inc.
Regards,
Franklin Cooper Jr.
Texas Instruments
Application Engineer
[email protected]<mailto:[email protected]>
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