[yocto] Can't compile out of tree kernel module when CONFIG_SYSTEM_TRUSTED_KEYRING is set in the kernel configuration

[Martin Townsend]

Hi Bruce,

On Thu, May 3, 2018 at 3:27 AM, Bruce Ashfield <bruce.ashfield at gmail.com> wrote:
>
>
> On Wed, May 2, 2018 at 5:05 PM, Martin Townsend <mtownsend1973 at gmail.com>
> wrote:
>>
>> Hi,
>>
>> I get the following error when compiling a kernel module using the
>> latest version of Rocko (The kernel is not linux-yocto but NXP's
>> freescale linux-imx, maybe this could be a factor) :
>>
>> ERROR: kernel-module-driver-0.1-r0 do_make_scripts: Function failed:
>> do_make_scripts (log file is located at
>>
>> /ws/yocto-rocko/build/tmp/work/mach_1717-linux-gnueabi/kernel-module-driver/0.1-r0/temp/log.do_make_scripts.23703)
>> ERROR: Logfile of failure stored in:
>>
>> /ws/yocto-rocko/build/tmp/work/mach_1717-cwr-linux-gnueabi/kernel-module-driver/0.1-r0/temp/log.do_make_scripts.23703
>> Log data follows:
>> | DEBUG: Executing shell function do_make_scripts
>> | make: Entering directory
>> '/ws/rufilla/yocto-rocko/build/tmp/work-shared/mach-1717/kernel-source'
>> | make[1]: Entering directory
>>
>> '/ws/rufilla/yocto-rocko/build/tmp/work-shared/mach-1717/kernel-build-artifacts'
>> |   HOSTCC  scripts/extract-cert
>> |
>> /ws/yocto-rocko/build/tmp/work-shared/mach-1717/kernel-source/scripts/extract-cert.c:21:25:
>> fatal error: openssl/bio.h: No such file or directory
>> | compilation terminated.
>> | scripts/Makefile.host:107: recipe for target 'scripts/extract-cert'
>> failed
>> | make[2]: *** [scripts/extract-cert] Error 1
>> |
>> /ws/rufilla/yocto-rocko/build/tmp/work-shared/mach-1717/kernel-source/Makefile:560:
>> recipe for target 'scripts' failed
>> |
>>
>> I checked the makefile and extract-cert is only compiled if
>> CONFIG_SYSTEM_TRUSTED_KEYRING is set which we have.
>>
>>  I could install libssl-dev but it doesn't feel right installing this
>> and it's not in the system requirements plus the file openssl/bio.h is
>> in the recipe-sysroot-native directory of the kernel module WORK_DIR.
>
>
> I've run into this plenty of times with newer kernels (4.14+), which is why
> all the linux-yocto recipes have:
>
> DEPENDS += "${@bb.utils.contains('ARCH', 'x86', 'elfutils-native', '', d)}"
> DEPENDS += "openssl-native util-linux-native"
>
> As does my re-worked kernel-devsrc.
>
> So yah, you can just add the dependency to fix the problem.
>
> Bruce
>

Thanks for the swift reply and I tried the suggestions but I'm afraid
the end result is still the same.

The actual kernel builds fine so I'll take a look at this to see if
there are any clues.  I'm guessing do_make_scripts needs tweaking for
an out of tree kernel module recipe to use the recipe_sysroot_native
directory somehow.

Cheers, Martin

>>
>>
>>
>> Any help would be greatly appreciated,
>> Marin.
>> --
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>
>
>
>
> --
> "Thou shalt not follow the NULL pointer, for chaos and madness await thee at
> its end"