Re: linux: having problems forcing a kernel recompile...

[Bob Cochran <yocto@mindchasers.com>]

On 01/10/2015 02:45 PM, Bruce Ashfield wrote:
> On Fri, Jan 9, 2015 at 11:32 AM, Bob Cochran <yocto@mindchasers.com> wrote:
>> Hi,
>>
>> I'm working with the latest poky master branch (as of this morning:
>> 876370419a), and I can't force a recompile of the kernel:
>>
>> $ bitbake virtual/kernel -c compile -f
>>
>> fails with
>>
>> | make[2]: *** [prepare3] Error 1
>>
>> I have seen this with both linux-qoriq and my own derived linux-yocto
>> recipe.
>>
>> I believe it's due to my sysroots kernel source directory not being clean.
>>
>> When I initially bake my kernel, I can see that the do_populate_sysroot task
>> is run and it copies a .config into sysroots/<machine>/usr/src/kernel.
>>
>> When I try to force the recompile, MAKE sees that my source directory isn't
>> clean and quits ( throws the prepare3 error ).
>>
>> Somewhat related, I also notice that neither a
>>
>> $ bitbake virtual/kernel -c cleansstate
>>
>> nor a
>>
>> $ bitbake virtual/kernel -c cleanall
>>
>> actually cleans my kernel source directory.  Should it?
>>
>>
>> If these are legitimate bugs, I'll be happy to file a bugzilla report.
>
>
> These are due to some changes that we merged at the end of December to
> improve kernel build times. We have bugs open for this issue, and set of
> changes nearly ready that addresses this, and a few other pending issues.


Thanks Bruce for letting me know.  It's easy to work around - just 
delete .config & include/config from sysroot.




>
> Bruce
>
>>
>>
>> Thanks
>>
>> Bob
>>
>>
>>
>>
>>
>> Error Log from running "bitbake virtual/kernel -c compile -f":
>>
>>
>> | DEBUG: Executing shell function do_compile
>> | NOTE: make -j 4 uImage CC=powerpc64-poky-linux-gcc
>> --sysroot=/build/yocto/t1040_1/tmp/sysroots/t1040rdb-64b
>> LD=powerpc64-poky-linux-ld.bfd
>> --sysroot=/build/yocto/t1040_1/tmp/sysroots/t1040rdb-64b
>> |   CHK     include/config/kernel.release
>> |   GEN
>> /build/yocto/t1040_1/tmp/work/t1040rdb_64b-poky-linux/linux-qoriq/3.12-r0/build/Makefile
>> |   CHK     include/generated/uapi/linux/version.h
>> |   Using /build/yocto/t1040_1/tmp/sysroots/t1040rdb-64b/usr/src/kernel as
>> source for kernel
>> |   /build/yocto/t1040_1/tmp/sysroots/t1040rdb-64b/usr/src/kernel is not
>> clean, please run 'make mrproper'
>> |   in the '/build/yocto/t1040_1/tmp/sysroots/t1040rdb-64b/usr/src/kernel'
>> directory.
>> |   CHK     include/generated/utsrelease.h
>> | make[2]: *** [prepare3] Error 1
>> | make[2]: *** Waiting for unfinished jobs....
>> |   CC      scripts/mod/empty.o
>> |   CC      scripts/mod/devicetable-offsets.s
>> |   MKELF   scripts/mod/elfconfig.h
>> |   HOSTCC  scripts/mod/modpost.o
>> |   HOSTCC  scripts/mod/sumversion.o
>> |   GEN     scripts/mod/devicetable-offsets.h
>> |   HOSTCC  scripts/mod/file2alias.o
>> |   HOSTLD  scripts/mod/modpost
>> | make[1]: *** [sub-make] Error 2
>> | make: *** [all] Error 2
>> | ERROR: oe_runmake failed
>> --
>> _______________________________________________
>> yocto mailing list
>> yocto@yoctoproject.org
>> https://lists.yoctoproject.org/listinfo/yocto
>
>
>