[yocto] Creating image with genericx86 machine and RT-Preempt Patch

[Bruce Ashfield]

On 2015-07-07 7:56 AM, Gorny Krystian wrote:
> Hi,
>
> I try to build an image for a x86 architecture with RT-Preemtp Patch. So
> I use the genericx86 machine and try to build the core-image-rt recipe.
> This fails with the following errors:
>
> /> ERROR: Nothing PROVIDES 'linux-yocto-rt' (but
> /media/disk/myYocto/poky/meta/recipes-rt/images/core-image-rt.bb DEPENDS
> on or otherwise requires it)/
>
> /> ERROR: linux-yocto-rt was skipped: incompatible with machine
> genericx86 (not in COMPATIBLE_MACHINE)/
>
> /> ERROR: Required build target 'core-image-rt' has no buildable providers./
>
> /> Missing or unbuildable dependency chain was: ['core-image-rt',
> 'linux-yocto-rt']/
>
> So I add the following parameter to my local.conf file:
>
> /> COMPATIBLE_MACHINE_genericx86 = "genericx86"/
>
> /> COMPATIBLE_MACHINE_quilt-native = "genericx86"/
>
> /> PREFERRED_PROVIDER_virtual/kernel = "linux-yocto-rt"/
>
> But I get this error:
>
> /> ERROR: Task 80
> (/media/disk/myYocto/poky/meta/recipes-kernel/linux/linux-yocto-rt_3.14.bb,
> do_compile) failed with exit code '1'/
>
> In the log.do_compile file I see:
>
> /> NOTE: make -j 4 bzImage CC=i686-poky-linux-gcc
> LD=i686-poky-linux-ld.bfd/
>
> /> make[3]: Nothing to be done for `all'./
>
> />   CHK     include/config/kernel.release/
>
> />   GEN
> /media/disk/myYocto/poky/build/tmp/work/genericx86-poky-linux/linux-yocto-rt/3.14.36+gitAUTOINC+a996d95104_3428de7103-r0/linux-genericx86preempt-$/
>
> />   CHK     include/generated/uapi/linux/version.h/
>
> />   CHK     include/generated/utsrelease.h/
>
> />   HOSTCC  scripts/conmakehash/
>
> />   HOSTCC  scripts/sortextable/
>
> />   CC      scripts/mod/empty.o/
>
> />
> /media/disk/myYocto/poky/build/tmp/work-shared/genericx86/kernel-source/scripts/mod/empty.c:1:0:
> error: code model 'kernel' not supported in the 32 bit >mode/
>
> />  /* empty file to figure out endianness / word size *//
>
> />  ^/
>
> />
> /media/disk/myYocto/poky/build/tmp/work-shared/genericx86/kernel-source/scripts/mod/empty.c:1:0:
> sorry, unimplemented: 64-bit mode not compiled in/
>
> /> make[4]: *** [scripts/mod/empty.o] Error 1/
>
> /> make[4]: *** Waiting for unfinished jobs..../
>
> />   HOSTCC  scripts/mod/mk_elfconfig/
>
> /> make[3]: *** [scripts/mod] Error 2/
>
> /> make[3]: *** Waiting for unfinished jobs..../
>
> /> make[2]: *** [scripts] Error 2/
>
> /> make[1]: *** [sub-make] Error 2/
>
> /> make: *** [all] Error 2/
>
> /> ERROR: oe_runmake failed/
>
> /> WARNING: exit code 1 from a shell command./
>
> I already tried genericx86_64 machine and it’s still not working. Are
> the genericx86 machine incompatible with the core-image-rt recipy? If
> yes how can I build a x86 image with the RT patch?

What you did should have worked, since we do map the genericx86 BSP onto
one of the configurations that supports preempt-rt.

It looks like a compile error has crept in .. I'll start a build and see
if it is indeed broken at the moment (and then I can fix it).

Bruce

>
> Many Thanks
>
>
> _____________________________________________________________________
>
> *Krystian Gorny*
> Research & Development
>
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