Op 25 apr 2011, om 19:10 heeft Darren Hart het volgende geschreven:
> Hi Koen,
>
> On 04/23/2011 07:47 AM, Koen Kooi wrote:
>> Hi,
>>
>> Over the holidays I was trying to build some externel kernel modules
>> and they failed to build because linux/bounds.h wasn't in sysroots.
>>
>
>
> According the the linux Makefile:
>
> ###
> # Cleaning is done on three levels.
> # make clean Delete most generated files
> # Leave enough to build external modules
>
> The kernel Makefile should not be deleting it.
>
> And indeed:
> https://bugzilla.kernel.org/show_bug.cgi?id=11475
>
> This was addressed by the following in 2.6.27:
> 7d3cc8b6d899e53222c22a78d98bb53a695f7962
> Don't clean bounds.h and asm-offsets.h
>
> Later, bounds.h moved as well in 2.6.33:
> 01fc0ac198eabcbf460e1ed058860a935b6c2c9a
> kbuild: move bounds.h to include/generated
>
>
> Which kernel version are you attempting to build?
The 2.6.32 kernel from TI
>
> We shouldn't add code to address a bug in a specific kernel version in a
> kernel base class. That belongs in the specific recipe. I suggest trying
> to add the 7d3cc8b6d899e53222c22a78d98bb53a695f7962 patch to your kernel
> recipe and see if that resolves the issue for you without resorting to
> recreating the clean process in the base class.
That's already in :(
koen@dominion:/OE/tentacle/build/tmp-angstrom_2010_x/work/beagleboard-angstrom-linux-gnueabi/linux-omap-psp-2.6.32-r99a+gitr5fc29e7b2a76a64a739f857858ef0b98294aa155/git$
grep bound Kbuild
# 1) Generate bounds.h
# 2) Generate asm-offsets.h (may need bounds.h)
# 1) Generate bounds.h
bounds-file := include/linux/bounds.h
always := $(bounds-file)
targets := $(bounds-file) kernel/bounds.s
quiet_cmd_bounds = GEN $@
define cmd_bounds
kernel/bounds.s: kernel/bounds.c FORCE
$(obj)/$(bounds-file): kernel/bounds.s Kbuild
$(call cmd,bounds)
$(obj)/$(bounds-file) FORCE
clean-files := $(addprefix $(objtree)/,$(filter-out $(bounds-file)
$(offsets-file),$(targets)))
I'll dig a bit deeper to see why bounds.h is getting cleaned.
regards,
Koen
>
> --
> Darren
>
>> I did this quick hack to work around it:
>>
>> --- a/meta-oe/classes/kernel.bbclass
>> +++ b/meta-oe/classes/kernel.bbclass
>> @@ -159,7 +159,8 @@ kernel_do_install() {
>> # we clean the scripts dir while leaving the generated config
>> # and include files.
>> #
>> - oe_runmake -C $kerneldir CC="${KERNEL_CC}" LD="${KERNEL_LD}" clean
>> + find $kerneldir -name "*.o" -delete
>> + #oe_runmake -C $kerneldir CC="${KERNEL_CC}" LD="${KERNEL_LD}"
> clean
>> make -C $kerneldir _mrproper_scripts
>> find $kerneldir -path $kerneldir/scripts -prune -o -name
> "*.[csS]" -exec rm '{}' \;
>> find $kerneldir/Documentation -name "*.txt" -exec rm '{}' \;
>>
>> I'm not convinced that the above is the right way to solve it, but I
>> lack the required kbuild knowledge to come up with a better one. Does
>> anyone have a hint on how to approach this problem in a better way?
>>
>> regards,
>>
>> Koen
>
> --
> Darren Hart
> Intel Open Source Technology Center
> Yocto Project - Linux Kernel
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