[yocto] Build external module against Yocto kernel

[Bruce Ashfield]

On 13-01-23 12:14 AM, Patrick Turley wrote:
> On Jan 22, 2013, at 10:43 PM, Bruce Ashfield<bruce.ashfield at windriver.com>  wrote:
>> On 13-01-22 9:26 PM, Patrick Turley wrote:
>>> If I just hold down the "Enter" key, I believe all the defaults are taken, and I eventually *do* get hostprogs that execute, but I don't know if they're appropriate to my kernel. (Again, I'm a n00b, so perhaps there's no effect at all.)
>>
>> This will be fine, the defaults will work. The kernel build infrastructure
>> is picking up what it thinks is a change source ->  to config and trying
>> to reconcile the differences.
>>
>> If you throw in a 'make oldconfig' before you do the 'make scripts', does
>> that quiet things down a bit ?
>
> No -- "make oldconfig" caused the very same questions (see below).

Aha. of course (now that I think about it), the build was simply triggering
old config automatically.

silentoldconfig is what I really should have typed :)

Bruce

>
> -------------------
>
> $ cd /opt/poky/1.3/sysroots/dm8148_mpu-poky-linux-gnueabi/usr/src/kernel
>
> $ ls
> arch           drivers   Kbuild             MAINTAINERS     README          System.map-2.6.37
> block          firmware  Kconfig            Makefile        REPORTING-BUGS  tools
> COPYING        fs        kernel             mm              samples         uImage
> CREDITS        include   kernel-abiversion  Module.symvers  scripts         usr
> crypto         init      kernel-image-name  net             security        virt
> Documentation  ipc       lib                patches         sound
>
> $ sudo make oldconfig
>    HOSTCC  scripts/basic/fixdep
>    HOSTCC  scripts/basic/docproc
>    HOSTCC  scripts/kconfig/conf.o
>    HOSTCC  scripts/kconfig/kxgettext.o
>    SHIPPED scripts/kconfig/zconf.tab.c
>    SHIPPED scripts/kconfig/lex.zconf.c
>    SHIPPED scripts/kconfig/zconf.hash.c
>    HOSTCC  scripts/kconfig/zconf.tab.o
>    HOSTLD  scripts/kconfig/conf
> scripts/kconfig/conf --oldconfig Kconfig
> *
> * Restart config...
> *
> *
> * General setup
> *
> Prompt for development and/or incomplete code/drivers (EXPERIMENTAL) [Y/n/?] y
> Cross-compiler tool prefix (CROSS_COMPILE) []
> Local version - append to kernel release (LOCALVERSION) []
> Automatically append version information to the version string (LOCALVERSION_AUTO) [N/y/?] n
> Kernel compression mode
>> 1. Gzip (KERNEL_GZIP)
>    2. Bzip2 (KERNEL_BZIP2) (NEW)
>    3. LZMA (KERNEL_LZMA)
>    4. LZO (KERNEL_LZO)
> choice[1-4?]:
>