On 09/27/2018 11:24 PM, ?????? wrote:
cd meta-yocto-bsp/recipes-kernel/linux/
cp linux-yocto_4.18.bbappend linux-yocto-rt_4.18.bbappend
it works now.
It only works to build due to the line:
COMPATIBLE_MACHINE_beaglebone-yocto = "beaglebone-yocto"
But it may not actually be building the proper -rt kernel,
since that same bbappend sets SRCREVs that are not valid
for the preempt-rt branches.
Also, it wouldn't work if there wasn't already a preempt-rt
BSP description for that board (but in this case, there is
one).
Bruce
------------------?0?2?????????0?2------------------
*??????:*?0?2"????????????"<1056612...@qq.com>;
*????????:*?0?22018??9??28??(??????) ????11:09
*??????:*?0?2"Bruce
Ashfield"<bruce.ashfi...@windriver.com>;"linux-yocto"<linux-yocto@yoctoproject.org>;
*????:*?0?2?????? [linux-yocto] about beaglebone-yocto bitbake core-image-rt
in file:
?0?2?0?2?0?2?0?2?0?2?0?2?0?2?0?2?0?2?0?2 ?0?2
meta-yocto-bsp/recipes-kernel/linux/linux-yocto_4.18.bbappend
there is line:
?0?2?0?2?0?2?0?2?0?2?0?2?0?2?0?2?0?2?0?2 ?0?2 COMPATIBLE_MACHINE_beaglebone-yocto =
"beaglebone-yocto"
was it for add COMPATIBLE_MACHINE?
------------------ ???????? ------------------
*??????:*?0?2"Bruce Ashfield"<bruce.ashfi...@windriver.com>;
*????????:*?0?22018??9??27??(??????) ????9:27
*??????:*?0?2"??????"<1056612...@qq.com>;"linux-yocto"<linux-
yo...@yoctoproject.org>;
*????:*?0?2Re: [linux-yocto] about beaglebone-yocto bitbake core-image-rt
On 09/27/2018 02:15 AM, ?????? wrote:
> $ git clone git://git.yoctoproject.org/poky
> $ cd poky
> $ . ./oe-init-build-env build-bbb
>
> edit conf/local.conf to set MACHINE ??= "beaglebone-yocto"
>
> $ echo "PREFERRED_PROVIDER_virtual/kernel = \"linux-yocto-rt\"" >>
> conf/local.conf
> $ bitbake -v core-image-rt
>
> got errors:
>
> Loading cache...done.
> Loaded 1260 entries from dependency cache.
> NOTE: Resolving any missing task queue dependencies
> NOTE: selecting pseudo-native to satisfy virtual/fakeroot-native due to
> PREFERRED_PROVIDERS
> ERROR: Nothing PROVIDES 'linux-yocto-rt' (but
>
/home/jaloo/backup/yocto/src/poky/meta/recipes-rt/images/core-image-rt.bb DEPENDS
> on or otherwise requires it)
> linux-yocto-rt was skipped: incompatible with machine beaglebone-yocto
> (not in COMPATIBLE_MACHINE)
> linux-yocto-rt was skipped: incompatible with machine beaglebone-yocto
> (not in COMPATIBLE_MACHINE)
> NOTE: Target 'linux-yocto-rt' is unbuildable, removing...
> Missing or unbuildable dependency chain was: ['linux-yocto-rt']
> NOTE: Target 'core-image-rt' is unbuildable, removing...
> Missing or unbuildable dependency chain was: ['core-image-rt',
> 'linux-yocto-rt']
> ERROR: Required build target 'core-image-rt' has no buildable providers.
> Missing or unbuildable dependency chain was: ['core-image-rt',
> 'linux-yocto-rt']
The problem is just what they error message is trying to say.
There's no declared machine compatibility between that board
and the linux-yocto-rt recipe.
You could create a bbappend that contained both a BSP
definition and that sets the compatibility. But I can't
say if it would, or wouldn't have runtime issues.
i.e. you need to append beaglbone-yocto to the COMPATIBLE_MACHINE
variable.
You also need a BSP definition for the -rt kernel, but at
a glance, it looks like there's already one in the kernel-cache,
so you should get a valid configuration.
Bruce
>
> Summary: There were 2 ERROR messages shown, returning a non-zero exit
code.
>
>
>
>
>
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